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Transaction not updating property in android firestore

I am trying to add a feature like or dislike to my post(Question). But it is not updating the like button image.
public class QuestionDetailActivity extends AppCompatActivity implements View.OnClickListener {
private static final String TAG = "QuestionDetailActivity";
private Context mContext;
private TextView questionTitleTv;
private RadioGroup radioLL;
private EditText answerEt;
private LinearLayout checkboxLL;
private LinearLayout commentLL;
private FirebaseFirestore db = null;
private String questionID;
private String userID;
private TextView likeCountTv,favouriteCountTv;
private boolean isLikedByUser = false,isFavouriteByUser = false;
private DocumentReference questionRef;
private QuestionBO questionBO;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_question_detail);
mContext = QuestionDetailActivity.this;
db = FirebaseFirestore.getInstance();
userID = "V5BUeBFYR8WKOQUiBFxKrfMHK8Y2";
questionTitleTv = findViewById(R.id.tv_question_title);
radioLL = findViewById(R.id.ll_radio);
answerEt = findViewById(R.id.et_answer);
checkboxLL = findViewById(R.id.ll_checkbox);
commentLL = findViewById(R.id.ll_comments);
likeCountTv = findViewById(R.id.tv_like_count);
favouriteCountTv = findViewById(R.id.tv_favourite_count);
likeCountTv.setOnClickListener(this);
favouriteCountTv.setOnClickListener(this);
if (getIntent() != null) {
questionID = getIntent().getExtras().getString("keyQuestionID", "");
}
questionRef = db.collection("questionCollection").document(questionID);
if (!questionID.isEmpty()) {
getQuestionDetail();
///showComments();
updateFavouriteAndLikeIcons();
}
}
private void updateFavouriteAndLikeIcons() {
questionRef.collection("favouriteCollection").document(userID).get()
.addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
#Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
if(documentSnapshot.exists()){
isFavouriteByUser = true;
// and make it blue
Drawable image = getResources().getDrawable( R.drawable.icn_fav_yes );
int h = image.getIntrinsicHeight();
int w = image.getIntrinsicWidth();
image.setBounds( 0, 0, w, h );
favouriteCountTv.setCompoundDrawables( image, null, null, null );
}
}
});
questionRef.collection("likeCollection").document(userID).get()
.addOnSuccessListener(new OnSuccessListener<DocumentSnapshot>() {
#Override
public void onSuccess(DocumentSnapshot documentSnapshot) {
if(documentSnapshot.exists()){
boolean isLiked = documentSnapshot.getBoolean(userID);
if(isLiked){
isLikedByUser = true;
// and make it blue
Drawable image = getResources().getDrawable( R.drawable.icn_like_yes );
int h = image.getIntrinsicHeight();
int w = image.getIntrinsicWidth();
image.setBounds( 0, 0, w, h );
likeCountTv.setCompoundDrawables( image, null, null, null );
}
else{//dislike
}
}
}
});
}
private void showComments() {
db.collection("commentCollection").whereEqualTo("questionID", questionID)
.get()
.addOnSuccessListener(new OnSuccessListener<QuerySnapshot>() {
#Override
public void onSuccess(QuerySnapshot queryDocumentSnapshots) {
if (queryDocumentSnapshots.isEmpty()) {
Log.d(TAG, "onSuccess: LIST EMPTY");
return;
} else {
// Convert the whole Query Snapshot to a list
// of objects directly! No need to fetch each
// document.
List<CommentBO> commentList = queryDocumentSnapshots.toObjects(CommentBO.class);
if (commentList != null && commentList.size() > 0) {
for (int x = 0; x < commentList.size(); x++) {
try {
LinearLayout.LayoutParams childParam = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.MATCH_PARENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
childParam.setMargins(20, 10, 0, 0);
View commentByView = LayoutInflater.from(mContext).inflate(R.layout.item_comment, null);
TextView tvCommenter = (TextView) commentByView.findViewById(R.id.item_tv_commenter_name);
TextView tvCommenterComment = (TextView) commentByView.findViewById(R.id.item_tv_commenter_comment);
TextView tvCommentDate = (TextView) commentByView.findViewById(R.id.item_tv_comment_date);
tvCommenter.setText(commentList.get(x).getCommentedBy());
tvCommenterComment.setText(commentList.get(x).getComment());
///tvCommentDate.setText();
commentLL.addView(commentByView, childParam);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
}
});
}
private void getQuestionDetail() {
questionRef.get().addOnCompleteListener(new OnCompleteListener<DocumentSnapshot>() {
#Override
public void onComplete(#NonNull Task<DocumentSnapshot> task) {
if (task.isSuccessful()) {
DocumentSnapshot document = task.getResult();
if (document.exists()) {
Log.d(TAG, "DocumentSnapshot data: " + document.getData());
questionBO = document.toObject(QuestionBO.class);
updateView(questionBO);
} else {
Log.d(TAG, "No such document");
}
} else {
Log.d(TAG, "get failed with ", task.getException());
}
}
});
}
private void updateView(QuestionBO mQuestionBO) {
if (mQuestionBO != null) {
questionTitleTv.setText(mQuestionBO.getTitle());
likeCountTv.setText(mQuestionBO.getTotalLikes() + "");
favouriteCountTv.setText(mQuestionBO.getTotalFavourites() + "");
switch (mQuestionBO.getQuestionType()) {
case CHECKBOX:
checkboxLL.setVisibility(View.VISIBLE);
if (mQuestionBO.getOptions() != null && mQuestionBO.getOptions().size() > 0) {
checkboxLL.removeAllViews();
for (int x = 0; x < mQuestionBO.getOptions().size(); x++) {
final CheckBox subCheckbox = new CheckBox(mContext);
subCheckbox.setText(mQuestionBO.getOptions().get(x));
subCheckbox.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
}
});
checkboxLL.addView(subCheckbox, new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
}
}
break;
case RADIO:
radioLL.setVisibility(View.VISIBLE);
if (mQuestionBO.getOptions() != null && mQuestionBO.getOptions().size() > 0) {
radioLL.removeAllViews();
for (int x = 0; x < mQuestionBO.getOptions().size(); x++) {
final RadioButton subRadio = new RadioButton(mContext);
subRadio.setText(mQuestionBO.getOptions().get(x));
radioLL.addView(subRadio, new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.MATCH_PARENT, LinearLayout.LayoutParams.WRAP_CONTENT));
}
}
break;
case DESCRIPTIVE:
answerEt.setVisibility(View.VISIBLE);
break;
}
}
}
private void likeOrDislikeThisQuestion(){
final Task<Boolean> booleanTask = db.runTransaction(new Transaction.Function<Boolean>() {
#Nullable
#Override
public Boolean apply(#NonNull Transaction transaction) throws FirebaseFirestoreException {
DocumentReference likeRef = questionRef.collection("likeCollection")
.document(userID);
Map<String,Object> map = new HashMap<>();
DocumentSnapshot snapshot = transaction.get(likeRef);
if(snapshot.exists()){ // it means this is a favourite question of this user.
if(snapshot.getBoolean(questionID) && isLikedByUser){
isLikedByUser = false;
map.put(questionID,isLikedByUser);
transaction.update(likeRef,map);
int numberOfLikes = questionBO.getTotalLikes();
transaction.update(questionRef,"totalLikes",--numberOfLikes);
likeCountTv.setText(numberOfLikes + "");
return isLikedByUser;
}
else if(!snapshot.getBoolean(questionID) && !isLikedByUser){
isLikedByUser = true;
map.put(questionID,isLikedByUser);
transaction.update(likeRef,map);
int numberOfLikes = questionBO.getTotalLikes();
transaction.update(questionRef,"totalLikes",-++numberOfLikes);
likeCountTv.setText(numberOfLikes + "");
return isLikedByUser;
}
}
else {
isLikedByUser = !isLikedByUser;
map.put(questionID,isLikedByUser);// pass oposite of it..
transaction.set(likeRef,map);
int numberOfLikes = questionBO.getTotalLikes();
if(isLikedByUser)
++numberOfLikes;
else
--numberOfLikes;
transaction.update(questionRef,"totalLikes",numberOfLikes);
likeCountTv.setText(numberOfLikes + "");
return isLikedByUser;
}
return null;
}
});
booleanTask.addOnSuccessListener(new OnSuccessListener<Boolean>() {
#Override
public void onSuccess(Boolean isLiked) {
if(isLiked == null){
}
else if(isLiked){
Drawable image = getResources().getDrawable( R.drawable.icn_like_yes );
int h = image.getIntrinsicHeight();
int w = image.getIntrinsicWidth();
image.setBounds( 0, 0, w, h );
likeCountTv.setCompoundDrawables( image, null, null, null );
}
else{
Drawable image = getResources().getDrawable( R.drawable.icn_like_no );
int h = image.getIntrinsicHeight();
int w = image.getIntrinsicWidth();
image.setBounds( 0, 0, w, h );
likeCountTv.setCompoundDrawables( image, null, null, null );
}
}
});
}
private void favouriteOrDisFavouriteQuestion(){
}
#Override
public void onClick(View view) {
switch (view.getId()){
case R.id.tv_like_count:
likeOrDislikeThisQuestion();
break;
case R.id.tv_favourite_count:
break;
}
}
}
I updated icon using updateFavouriteAndLikeIcons() for the first time. then when user clicks on like button I called likeOrDislikeThisQuestion() . Counter updating but left drawable not updating. and sometimes variable isLikedByUser become false .
If the question is already liked then likeCollection must have that Document. if that document don't exist it means User didn't like or dislike it.
My architecture of db is like
- likeCollection
userID (Document ID)
questionID = true // true for like and false for dislike..

From Firebase docs :
Do not modify application state inside of your transaction functions. Doing so will introduce concurrency issues, because transaction functions can run multiple times and are not guaranteed to run on the UI thread. Instead, pass information you need out of your transaction functions.
This is what happens here, you have to run every application modifications inside a listener on your variable booleanTask. Do not change class variable in the transaction's apply method.

TransactionTooLargeException occure on switching new activity

i'm developing image capture app in which after capturing image if you do not want to save image, press back button [ onBackPress i launch new activity i.e BottomNavigationActivity] it should switch to home activity (like normal camera app doing).
#Override
public void onBackPressed()
{
startActivity(new Intent(getApplicationContext(), BottomNavigationActivity.class));
}
But when i press back button TransactionTooLargeException occur and then app crash. i don't know why this happen even i am not transferring any huge amount of data like arrayList etc. help me to solve this problem
thanks in advance.
CameraFragment.java [here i capture the image]
public class CameraFragment extends Fragment implements SurfaceHolder.Callback, Camera.PictureCallback
{
public static final String TAG = CameraFragment.class.getSimpleName();
public static final String CAMERA_ID_KEY = "camera_id";
public static final String CAMERA_FLASH_KEY = "flash_mode";
public static final String IMAGE_INFO = "image_info";
private static final int PICTURE_SIZE_MAX_WIDTH = 1280;
private static final int PREVIEW_SIZE_MAX_WIDTH = 640;
private int mCameraID;
private String mFlashMode;
private Camera mCamera;
private SquareCameraPreview mPreviewView;
private SurfaceHolder mSurfaceHolder;
private boolean mIsSafeToTakePhoto = false;
private ImageParameters mImageParameters;
private CameraOrientationListener mOrientationListener;
ImageView iv_camera_close;
public static Fragment newInstance() {
return new CameraFragment();
}
public CameraFragment() {}
#Override
public void onAttach(Context context) {
super.onAttach(context);
mOrientationListener = new CameraOrientationListener(context);
}
#Override
public void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Restore your state here because a double rotation with this fragment
// in the backstack will cause improper state restoration
// onCreate() -> onSavedInstanceState() instead of going through onCreateView()
if (savedInstanceState == null) {
mCameraID = getBackCameraID();
mFlashMode = CameraSettingPreferences.getCameraFlashMode(getActivity());
mImageParameters = new ImageParameters();
}
else
{
mCameraID = savedInstanceState.getInt(CAMERA_ID_KEY);
mFlashMode = savedInstanceState.getString(CAMERA_FLASH_KEY);
mImageParameters = savedInstanceState.getParcelable(IMAGE_INFO);
}
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
return inflater.inflate(R.layout.squarecamera__fragment_camera, container, false);
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
mOrientationListener.enable();
mPreviewView = (SquareCameraPreview) view.findViewById(R.id.camera_preview_view);
mPreviewView.getHolder().addCallback(CameraFragment.this);
final View topCoverView = view.findViewById(R.id.cover_top_view);
final View btnCoverView = view.findViewById(R.id.cover_bottom_view);
iv_camera_close = view.findViewById(R.id.iv_camera_close);
iv_camera_close.setOnClickListener(new View.OnClickListener()
{
#Override
public void onClick(View v)
{
startActivity(new Intent(getContext(), BottomNavigationActivity.class));
}
});
mImageParameters.mIsPortrait =
getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT;
if (savedInstanceState == null) {
ViewTreeObserver observer = mPreviewView.getViewTreeObserver();
observer.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
#Override
public void onGlobalLayout() {
mImageParameters.mPreviewWidth = mPreviewView.getWidth();
mImageParameters.mPreviewHeight = mPreviewView.getHeight();
mImageParameters.mCoverWidth = mImageParameters.mCoverHeight
= mImageParameters.calculateCoverWidthHeight();
// Log.d(TAG, "parameters: " + mImageParameters.getStringValues());
// Log.d(TAG, "cover height " + topCoverView.getHeight());
resizeTopAndBtmCover(topCoverView, btnCoverView);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
mPreviewView.getViewTreeObserver().removeOnGlobalLayoutListener(this);
} else {
mPreviewView.getViewTreeObserver().removeGlobalOnLayoutListener(this);
}
}
});
} else {
if (mImageParameters.isPortrait()) {
topCoverView.getLayoutParams().height = mImageParameters.mCoverHeight;
btnCoverView.getLayoutParams().height = mImageParameters.mCoverHeight;
} else {
topCoverView.getLayoutParams().width = mImageParameters.mCoverWidth;
btnCoverView.getLayoutParams().width = mImageParameters.mCoverWidth;
}
}
final ImageView swapCameraBtn = (ImageView) view.findViewById(R.id.change_camera);
swapCameraBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mCameraID == CameraInfo.CAMERA_FACING_FRONT) {
mCameraID = getBackCameraID();
} else {
mCameraID = getFrontCameraID();
}
restartPreview();
}
});
final View changeCameraFlashModeBtn = view.findViewById(R.id.flash);
changeCameraFlashModeBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (mFlashMode.equalsIgnoreCase(Camera.Parameters.FLASH_MODE_AUTO)) {
mFlashMode = Camera.Parameters.FLASH_MODE_ON;
} else if (mFlashMode.equalsIgnoreCase(Camera.Parameters.FLASH_MODE_ON)) {
mFlashMode = Camera.Parameters.FLASH_MODE_OFF;
} else if (mFlashMode.equalsIgnoreCase(Camera.Parameters.FLASH_MODE_OFF)) {
mFlashMode = Camera.Parameters.FLASH_MODE_AUTO;
}
setupFlashMode();
setupCamera();
}
});
setupFlashMode();
final ImageView takePhotoBtn = (ImageView) view.findViewById(R.id.capture_image_button);
takePhotoBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
takePicture();
}
});
}
private void setupFlashMode() {
View view = getView();
if (view == null) return;
final TextView autoFlashIcon = (TextView) view.findViewById(R.id.auto_flash_icon);
if (Camera.Parameters.FLASH_MODE_AUTO.equalsIgnoreCase(mFlashMode)) {
autoFlashIcon.setText("Auto");
} else if (Camera.Parameters.FLASH_MODE_ON.equalsIgnoreCase(mFlashMode)) {
autoFlashIcon.setText("On");
} else if (Camera.Parameters.FLASH_MODE_OFF.equalsIgnoreCase(mFlashMode)) {
autoFlashIcon.setText("Off");
}
}
#Override
public void onSaveInstanceState(Bundle outState) {
// Log.d(TAG, "onSaveInstanceState");
outState.putInt(CAMERA_ID_KEY, mCameraID);
outState.putString(CAMERA_FLASH_KEY, mFlashMode);
outState.putParcelable(IMAGE_INFO, mImageParameters);
super.onSaveInstanceState(outState);
}
private void resizeTopAndBtmCover( final View topCover, final View bottomCover) {
ResizeAnimation resizeTopAnimation
= new ResizeAnimation(topCover, mImageParameters);
resizeTopAnimation.setDuration(800);
resizeTopAnimation.setInterpolator(new AccelerateDecelerateInterpolator());
topCover.startAnimation(resizeTopAnimation);
ResizeAnimation resizeBtmAnimation
= new ResizeAnimation(bottomCover, mImageParameters);
resizeBtmAnimation.setDuration(800);
resizeBtmAnimation.setInterpolator(new AccelerateDecelerateInterpolator());
bottomCover.startAnimation(resizeBtmAnimation);
}
private void getCamera(int cameraID) {
try {
mCamera = Camera.open(cameraID);
mPreviewView.setCamera(mCamera);
} catch (Exception e) {
Log.d(TAG, "Can't open camera with id " + cameraID);
e.printStackTrace();
}
}
/**
* Restart the camera preview
*/
private void restartPreview() {
if (mCamera != null) {
stopCameraPreview();
mCamera.release();
mCamera = null;
}
getCamera(mCameraID);
startCameraPreview();
}
/**
* Start the camera preview
*/
private void startCameraPreview() {
determineDisplayOrientation();
setupCamera();
try {
mCamera.setPreviewDisplay(mSurfaceHolder);
mCamera.startPreview();
setSafeToTakePhoto(true);
setCameraFocusReady(true);
} catch (IOException e) {
Log.d(TAG, "Can't start camera preview due to IOException " + e);
e.printStackTrace();
}
}
/**
* Stop the camera preview
*/
private void stopCameraPreview() {
setSafeToTakePhoto(false);
setCameraFocusReady(false);
// Nulls out callbacks, stops face detection
mCamera.stopPreview();
mPreviewView.setCamera(null);
}
private void setSafeToTakePhoto(final boolean isSafeToTakePhoto) {
mIsSafeToTakePhoto = isSafeToTakePhoto;
}
private void setCameraFocusReady(final boolean isFocusReady) {
if (this.mPreviewView != null) {
mPreviewView.setIsFocusReady(isFocusReady);
}
}
private void determineDisplayOrientation() {
CameraInfo cameraInfo = new CameraInfo();
Camera.getCameraInfo(mCameraID, cameraInfo);
// Clockwise rotation needed to align the window display to the natural position
int rotation = getActivity().getWindowManager().getDefaultDisplay().getRotation();
int degrees = 0;
switch (rotation) {
case Surface.ROTATION_0: {
degrees = 0;
break;
}
case Surface.ROTATION_90: {
degrees = 90;
break;
}
case Surface.ROTATION_180: {
degrees = 180;
break;
}
case Surface.ROTATION_270: {
degrees = 270;
break;
}
}
int displayOrientation;
if (cameraInfo.facing == CameraInfo.CAMERA_FACING_FRONT) {
// Orientation is angle of rotation when facing the camera for
// the camera image to match the natural orientation of the device
displayOrientation = (cameraInfo.orientation + degrees) % 360;
displayOrientation = (360 - displayOrientation) % 360;
} else {
displayOrientation = (cameraInfo.orientation - degrees + 360) % 360;
}
mImageParameters.mDisplayOrientation = displayOrientation;
mImageParameters.mLayoutOrientation = degrees;
mCamera.setDisplayOrientation(mImageParameters.mDisplayOrientation);
}
private void setupCamera() {
// Never keep a global parameters
Camera.Parameters parameters = mCamera.getParameters();
Size bestPreviewSize = determineBestPreviewSize(parameters);
Size bestPictureSize = determineBestPictureSize(parameters);
parameters.setPreviewSize(bestPreviewSize.width, bestPreviewSize.height);
parameters.setPictureSize(bestPictureSize.width, bestPictureSize.height);
// Set continuous picture focus, if it's supported
if (parameters.getSupportedFocusModes().contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE)) {
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_PICTURE);
}
final View changeCameraFlashModeBtn = getView().findViewById(R.id.flash);
List<String> flashModes = parameters.getSupportedFlashModes();
if (flashModes != null && flashModes.contains(mFlashMode)) {
parameters.setFlashMode(mFlashMode);
changeCameraFlashModeBtn.setVisibility(View.VISIBLE);
} else {
changeCameraFlashModeBtn.setVisibility(View.INVISIBLE);
}
mCamera.setParameters(parameters);
}
private Size determineBestPreviewSize(Camera.Parameters parameters) {
return determineBestSize(parameters.getSupportedPreviewSizes(), PREVIEW_SIZE_MAX_WIDTH);
}
private Size determineBestPictureSize(Camera.Parameters parameters) {
return determineBestSize(parameters.getSupportedPictureSizes(), PICTURE_SIZE_MAX_WIDTH);
}
private Size determineBestSize(List<Size> sizes, int widthThreshold) {
Size bestSize = null;
Size size;
int numOfSizes = sizes.size();
for (int i = 0; i < numOfSizes; i++) {
size = sizes.get(i);
boolean isDesireRatio = (size.width / 4) == (size.height / 3);
boolean isBetterSize = (bestSize == null) || size.width > bestSize.width;
if (isDesireRatio && isBetterSize) {
bestSize = size;
}
}
if (bestSize == null) {
Log.d(TAG, "cannot find the best camera size");
return sizes.get(sizes.size() - 1);
}
return bestSize;
}
private int getFrontCameraID() {
PackageManager pm = getActivity().getPackageManager();
if (pm.hasSystemFeature(PackageManager.FEATURE_CAMERA_FRONT)) {
return CameraInfo.CAMERA_FACING_FRONT;
}
return getBackCameraID();
}
private int getBackCameraID() {
return CameraInfo.CAMERA_FACING_BACK;
}
private void takePicture() {
if (mIsSafeToTakePhoto) {
setSafeToTakePhoto(false);
mOrientationListener.rememberOrientation();
Camera.ShutterCallback shutterCallback = null;
Camera.PictureCallback raw = null;
// postView callback occurs when a scaled, fully processed
// postView image is available.
Camera.PictureCallback postView = null;
mCamera.takePicture(shutterCallback, raw, postView, this);
}
}
#Override
public void onResume() {
super.onResume();
if (mCamera == null) {
restartPreview();
}
}
#Override
public void onStop() {
mOrientationListener.disable();
// stop the preview
if (mCamera != null) {
stopCameraPreview();
mCamera.release();
mCamera = null;
}
CameraSettingPreferences.saveCameraFlashMode(getActivity(), mFlashMode);
super.onStop();
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
mSurfaceHolder = holder;
getCamera(mCameraID);
startCameraPreview();
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
// The surface is destroyed with the visibility of the SurfaceView is set to View.Invisible
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode != Activity.RESULT_OK) return;
switch (requestCode) {
case 1:
Uri imageUri = data.getData();
break;
default:
super.onActivityResult(requestCode, resultCode, data);
}
}
/**
* A picture has been taken
* #param data
* #param camera
*/
#Override
public void onPictureTaken(byte[] data, Camera camera) {
int rotation = getPhotoRotation();
getFragmentManager()
.beginTransaction()
.replace(
R.id.fragment_container,
EditSavePhotoFragment.newInstance(data, rotation, mImageParameters.createCopy()),
EditSavePhotoFragment.TAG)
.addToBackStack(null)
.commit();
setSafeToTakePhoto(true);
}
private int getPhotoRotation() {
int rotation;
int orientation = mOrientationListener.getRememberedNormalOrientation();
CameraInfo info = new CameraInfo();
Camera.getCameraInfo(mCameraID, info);
if (info.facing == CameraInfo.CAMERA_FACING_FRONT) {
rotation = (info.orientation - orientation + 360) % 360;
} else {
rotation = (info.orientation + orientation) % 360;
}
return rotation;
}
/**
* When orientation changes, onOrientationChanged(int) of the listener will be called
*/
private static class CameraOrientationListener extends OrientationEventListener {
private int mCurrentNormalizedOrientation;
private int mRememberedNormalOrientation;
public CameraOrientationListener(Context context) {
super(context, SensorManager.SENSOR_DELAY_NORMAL);
}
#Override
public void onOrientationChanged(int orientation) {
if (orientation != ORIENTATION_UNKNOWN) {
mCurrentNormalizedOrientation = normalize(orientation);
}
}
/**
* #param degrees Amount of clockwise rotation from the device's natural position
* #return Normalized degrees to just 0, 90, 180, 270
*/
private int normalize(int degrees) {
if (degrees > 315 || degrees <= 45) {
return 0;
}
if (degrees > 45 && degrees <= 135) {
return 90;
}
if (degrees > 135 && degrees <= 225) {
return 180;
}
if (degrees > 225 && degrees <= 315) {
return 270;
}
throw new RuntimeException("The physics as we know them are no more. Watch out for anomalies.");
}
public void rememberOrientation() {
mRememberedNormalOrientation = mCurrentNormalizedOrientation;
}
public int getRememberedNormalOrientation() {
rememberOrientation();
return mRememberedNormalOrientation;
}
}
}
EditSavePhotoFragment.java [here i display the preview of image]
this is code to switch activity , when i called this my app crashes
view.findViewById(R.id.cancel).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//getActivity().onBackPressed();
getActivity().startActivity(new Intent(getContext(), BottomNavigationActivity.class));
}
});
below is full source code
public class EditSavePhotoFragment extends Fragment {
public static final String TAG = EditSavePhotoFragment.class.getSimpleName();
public static String BITMAP_KEY = "bitmap_byte_array";
public static String ROTATION_KEY = "rotation";
public static String IMAGE_INFO = "image_info";
private static final int REQUEST_STORAGE = 1;
SharedPreferences pref;
SharedPreferences.Editor editor;
private static final String PHOTO_PREF = "PHOTO_PREF";
private static final String CAPTURE_IMAGE_PATH = "CAPTURE_IMAGE_PATH";
public static Fragment newInstance(byte[] bitmapByteArray, int rotation,
#NonNull ImageParameters parameters) {
Fragment fragment = new EditSavePhotoFragment();
Bundle args = new Bundle();
args.putByteArray(BITMAP_KEY, bitmapByteArray);
args.putInt(ROTATION_KEY, rotation);
args.putParcelable(IMAGE_INFO, parameters);
fragment.setArguments(args);
return fragment;
}
public EditSavePhotoFragment() {}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,Bundle savedInstanceState)
{
View view = inflater.inflate(R.layout.squarecamera__fragment_edit_save_photo, container, false);
pref = getContext().getSharedPreferences(PHOTO_PREF, 0);
editor = pref.edit();
return view;
}
#Override
public void onViewCreated(View view, #Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
int rotation = getArguments().getInt(ROTATION_KEY);
byte[] data = getArguments().getByteArray(BITMAP_KEY);
ImageParameters imageParameters = getArguments().getParcelable(IMAGE_INFO);
if (imageParameters == null) {
return;
}
final ImageView photoImageView = (ImageView) view.findViewById(R.id.photo);
imageParameters.mIsPortrait =
getResources().getConfiguration().orientation == Configuration.ORIENTATION_PORTRAIT;
final View topView = view.findViewById(R.id.topView);
if (imageParameters.mIsPortrait) {
topView.getLayoutParams().height = imageParameters.mCoverHeight;
} else {
topView.getLayoutParams().width = imageParameters.mCoverWidth;
}
rotatePicture(rotation, data, photoImageView);
view.findViewById(R.id.save_photo).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
savePicture(photoImageView);
}
});
view.findViewById(R.id.cancel).setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//getActivity().onBackPressed();
getActivity().startActivity(new Intent(getContext(), BottomNavigationActivity.class));
}
});
}
private void rotatePicture(int rotation, byte[] data, ImageView photoImageView) {
Bitmap bitmap = ImageUtility.decodeSampledBitmapFromByte(getActivity(), data);
// Log.d(TAG, "original bitmap width " + bitmap.getWidth() + " height " + bitmap.getHeight());
if (rotation != 0) {
Bitmap oldBitmap = bitmap;
Matrix matrix = new Matrix();
matrix.postRotate(rotation);
bitmap = Bitmap.createBitmap(
oldBitmap, 0, 0, oldBitmap.getWidth(), oldBitmap.getHeight(), matrix, false
);
oldBitmap.recycle();
}
photoImageView.setImageBitmap(bitmap);
}
private void savePicture(ImageView imageView)
{
/*
try
{
SaveImageMethod(imageView);
}
catch (IOException e)
{
e.printStackTrace();
}
*/
requestForPermission();
}
private void SaveImageMethod(ImageView iv) throws IOException
{
BitmapDrawable draw = (BitmapDrawable) iv.getDrawable();
Bitmap bitmap = draw.getBitmap();
FileOutputStream outStream = null;
File sdCard = Environment.getExternalStorageDirectory();
File dir = new File(sdCard.getAbsolutePath() + "/SelfiLife");
dir.mkdirs();
String fileName = String.format("%d.jpg", System.currentTimeMillis());
File outFile = new File(dir, fileName);
Log.d("MainActivity","new IMAGE PATH = "+outFile);
editor.putString(CAPTURE_IMAGE_PATH, String.valueOf(outFile));
editor.commit();
outStream = new FileOutputStream(outFile);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outStream);
outStream.flush();
outStream.close();
}
private void requestForPermission() {
RuntimePermissionActivity.startActivity(EditSavePhotoFragment.this,
REQUEST_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (Activity.RESULT_OK != resultCode) return;
if (REQUEST_STORAGE == requestCode && data != null) {
final boolean isGranted = data.getBooleanExtra(RuntimePermissionActivity.REQUESTED_PERMISSION, false);
final View view = getView();
if (isGranted && view != null) {
ImageView photoImageView = (ImageView) view.findViewById(R.id.photo);
Bitmap bitmap = ((BitmapDrawable) photoImageView.getDrawable()).getBitmap();
Uri photoUri = ImageUtility.savePicture(getActivity(), bitmap);
((CameraActivity) getActivity()).returnPhotoUri(photoUri);
}
} else {
super.onActivityResult(requestCode, resultCode, data);
}
}
}

How to set image in imageview in adapter and getting uri in another activity?

(This is my adapter)(I want to display image in the imageview ivReceiverSign The image url is saved in signature class displayed below.)
DbAdapter
package com.example.dhruvitpatel.deviceregistration.adapter;
public class DbAdapter extends RecyclerView.Adapter<DbAdapter.ViewHolder> {
List<RegisterDevice> registerDevice;
Context mCtx;
String rowAdded;
public DbAdapter(List<RegisterDevice> registerDevice, Context mCtx) {
this.registerDevice = registerDevice;
this.mCtx = mCtx;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
Context context = parent.getContext();
View view = LayoutInflater.from(context).inflate(R.layout.rowlayout, parent, false);
return new DbAdapter.ViewHolder(view);
}
#Override
public void onBindViewHolder(final DbAdapter.ViewHolder holder, final int position) {
final RegisterDevice registerdetails = registerDevice.get(position);
holder.registerDate.setText("Register Date: " + registerdetails.getOutDate() + registerdetails.getOutTime());
holder.EmpName.setText("Name: " + registerdetails.getEmpName());
holder.Cable.setText("Cable: " + registerdetails.getCableName());
holder.Device.setText("Device: " + registerdetails.getDevName());
holder.ivUserSign.setImageURI(Uri.parse(registerdetails.getUserSign()));
holder.checkbox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
#RequiresApi(api = Build.VERSION_CODES.N)
#Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(mCtx);
alertDialogBuilder.setCancelable(false);
alertDialogBuilder.setMessage("Are you sure, You want to submit Device?");
alertDialogBuilder.setPositiveButton("yes", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface arg0, int arg1) {
holder.checkbox.setChecked(false);
final Dialog submitDialog = new Dialog(mCtx);
submitDialog.setContentView(R.layout.submitdevicedialog);
submitDialog.show();
TextView tvSubmittedTo = (TextView) submitDialog.findViewById(R.id.tvSubmittedTo);
final EditText etReceivedBy = (EditText) submitDialog.findViewById(R.id.etReceivedBy);
Button btnSubmitDevice = (Button) submitDialog.findViewById(R.id.btnSubmitDevice);
Button btnCancelSubmit = (Button) submitDialog.findViewById(R.id.btnCancelSubmit);
btnSubmitDevice.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String receiver = etReceivedBy.getText().toString();
if (receiver.isEmpty()) {
Toast.makeText(mCtx, "Enter receiver Name", Toast.LENGTH_SHORT).show();
} else {
Calendar cal = Calendar.getInstance();
SimpleDateFormat mdformat = new SimpleDateFormat("dd / MM / yyyy ");
String submitDate = mdformat.format(cal.getTime());
DateFormat date = new SimpleDateFormat("hh:mm:ss a");
String submitTime = date.format(cal);
long id = registerdetails.getPid();
DataSource.updateSubmittedDevice(submitDate, submitTime, receiver, id);
Intent in = new Intent(mCtx, Signature.class);
in.putExtra("Id", String.valueOf(id));
Log.d("ID:", String.valueOf(id));
mCtx.startActivity(in);
String recSign = registerdetails.getReceiverSign();
registerdetails.setSubmitDate(submitDate);
registerdetails.setSubmitTime(submitTime);
registerdetails.setReciever(receiver);
registerdetails.setDeviceSubmitted(true);
registerdetails.setReceiverSign(recSign);
registerDevice.remove(position);
registerDevice.add(position, registerdetails);
notifyItemChanged(position);
holder.checkbox.setVisibility(View.GONE);
if (registerdetails.getDeviceSubmitted().equals(Boolean.TRUE)) {
String temp = registerdetails.getDevName();
String temp1 = registerdetails.getCableName();
DataSource.updateDataonLoad(temp, temp1);
}
}
}
});
btnCancelSubmit.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
submitDialog.dismiss();
}
});
}
});
alertDialogBuilder.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
holder.checkbox.setChecked(false);
}
});
AlertDialog alertDialog = alertDialogBuilder.create();
alertDialog.show();
}
}
});
if (registerdetails.getDeviceSubmitted().equals(Boolean.TRUE)) {
// if(!registerdetails.getReceiverSign().isEmpty()){
// holder.ivReceiverSign.setImageURI(Uri.parse(registerdetails.getReceiverSign()));
// }
holder.card_view.setCardBackgroundColor(Color.GRAY);
holder.checkbox.setVisibility(View.GONE);
holder.tvSubmit.setVisibility(View.VISIBLE);
holder.tvReceiver.setVisibility(View.VISIBLE);
holder.submitDate.setVisibility(View.VISIBLE);
holder.tvReceiver.setText(registerdetails.getReciever());
holder.submitDate.setText("Submit Date: " + registerdetails.getSubmitDate() + registerdetails.getSubmitTime());
} else {
holder.checkbox.setVisibility(View.VISIBLE);
}
}
#Override
public int getItemCount() {
return registerDevice.size();
}
#Override
public int getItemViewType(int position) {
return position;
}
public class ViewHolder extends RecyclerView.ViewHolder {
#BindView(R.id.registerDate)
TextView registerDate;
#BindView(R.id.EmpName)
TextView EmpName;
#BindView(R.id.Device)
TextView Device;
#BindView(R.id.Cable)
TextView Cable;
#BindView(R.id.checkbox)
CheckBox checkbox;
#BindView(R.id.tvReceiver)
TextView tvReceiver;
#BindView(R.id.tvSubmit)
TextView tvSubmit;
#BindView(R.id.submitDate)
TextView submitDate;
#BindView(R.id.card_view)
CardView card_view;
#BindView(R.id.ivUserSign)
ImageView ivUserSign;
#BindView(R.id.ivReceiverSign)
ImageView ivReceiverSign;
public ViewHolder(View view) {
super(view);
ButterKnife.bind(this, view);
}
}
}
Register class
(Here I register devices which are loaded in spinner from database.After selecting items i will click on register button and all details will be notified to adapter )
Register Page
package com.example.dhruvitpatel.deviceregistration.activity;
public class TakeDevice extends AppCompatActivity implements View.OnClickListener {
#BindView(R.id.spnName)
Spinner spnName;
#BindView(R.id.spnDevice)
Spinner spnDevice;
#BindView(R.id.spnCable)
Spinner spnCable;
#BindView(R.id.btnRegister)
Button btnRegister;
#BindView(R.id.col)
CoordinatorLayout col;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_take_device);
ButterKnife.bind(this);
initView();
setListener();
loadempData();
loaddevdata();
loadcabledata();
}
private void initView() {
spnName.requestFocus();
}
private void setListener() {
btnRegister.setOnClickListener(this);
}
private void loadempData() {
final List<EmployeeDetails> values = DataSource.getempData();
adapter = new ArrayAdapter(this, R.layout.support_simple_spinner_dropdown_item, values);
adapter.add("Select your name");
spnName.setAdapter(adapter);
spnName.setSelection(adapter.getCount()-1);
}
#RequiresApi(api = Build.VERSION_CODES.N)
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.btnRegister:
empName = spnName.getSelectedItem().toString();
devName = spnDevice.getSelectedItem().toString();
Cable = spnCable.getSelectedItem().toString();
if (empName.isEmpty() && devName.isEmpty() && Cable.isEmpty()) {
Snackbar snack = Snackbar.make(col, "Select details", Snackbar.LENGTH_SHORT);
snack.show();
}
if (Cable.equals("Select cable")){
Snackbar snack = Snackbar.make(col, "Select cable", Snackbar.LENGTH_SHORT);
snack.show();
}
else if(empName.equals("Select your name")){
Snackbar snack = Snackbar.make(col, "Select name", Snackbar.LENGTH_SHORT);
snack.show();
}
else if (devName.equals("Select device")){
Snackbar snack = Snackbar.make(col, "Select device", Snackbar.LENGTH_SHORT);
snack.show();
}
else if (empName.isEmpty()) {
Snackbar snack = Snackbar.make(col, "Select name", Snackbar.LENGTH_SHORT);
snack.show();
} else if (devName.isEmpty() && Cable.isEmpty()) {
Snackbar snack = Snackbar.make(col, "Select device or cable", Snackbar.LENGTH_SHORT);
snack.show();
} else {
Calendar cal = Calendar.getInstance();
SimpleDateFormat mdformat = new SimpleDateFormat("dd / MM / yyyy ");
String strDate = mdformat.format(cal.getTime());
DateFormat date = new SimpleDateFormat("hh:mm:ss a");
String strTime = date.format(cal);
deviceTaken = new RegisterDevice();
deviceTaken.setOutDate(strDate);
deviceTaken.setOutTime(strTime);
deviceTaken.setEmpName(empName);
deviceTaken.setDevName(devName);
deviceTaken.setCableName(Cable);
DataSource.insertDetails(deviceTaken);
long regDevList = deviceTaken.getPid();
DataSource.updateBoolean(deviceIdDisp, cableIdDisp);
Intent intent = new Intent(this, Signature.class);
intent.putExtra("RowId", String.valueOf(regDevList));
startActivity(intent);
}
break;
}
(I get my image url in this class.i use this to get signature and i have four buttons in it)
Signature class
package com.example.dhruvitpatel.deviceregistration.activity;
public class Signature extends AppCompatActivity implements View.OnClickListener {
#BindView(R.id.btnSave)
Button btnSave;
#BindView(R.id.signLayout)
LinearLayout signLayout;
#BindView(R.id.btnRedo)
Button btnRedo;
#BindView(R.id.btnUndo)
Button btnUndo;
#BindView(R.id.btnClear)
Button btnClear;
#BindView(R.id.cordlayout)
CoordinatorLayout cordlayout;
private static final int GALLERY_REQUEST = 111;
public static String tempDir;
private String uniqueId;
File mypath;
public String current = null;
View mView;
signature mSignature;
Uri signImage;
private ArrayList<Path> paths = new ArrayList<Path>();
private ArrayList<Path> undonePaths = new ArrayList<Path>();
private Path mPath;
long id;
public boolean cc = false;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_signature);
ButterKnife.bind(this);
initView();
setListener();
}
private void initView() {
btnSave.setEnabled(false);
tempDir = Environment.getExternalStorageDirectory() + "/" + getResources().getString(R.string.external_dir) + "/";
ContextWrapper cw = new ContextWrapper(getApplicationContext());
File directory = cw.getDir(getResources().getString(R.string.external_dir), Context.MODE_PRIVATE);
uniqueId = getTodayDate() + "_" + getCurrentTime() + "_" + Math.random();
current = uniqueId + ".jpeg";
mypath = new File(directory, current);
Log.d("path:", String.valueOf(mypath));
mSignature = new signature(this, null);
mSignature.setBackgroundColor(Color.BLACK);
signLayout.addView(mSignature, LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
mView = signLayout;
btnRedo.setEnabled(false);
}
private String getTodayDate() {
final Calendar c = Calendar.getInstance();
int todaysDate = (c.get(Calendar.YEAR) * 10000) +
((c.get(Calendar.MONTH) + 1) * 100) +
(c.get(Calendar.DAY_OF_MONTH));
Log.w("DATE:", String.valueOf(todaysDate));
return (String.valueOf(todaysDate));
}
private String getCurrentTime() {
final Calendar c = Calendar.getInstance();
int currentTime = (c.get(Calendar.HOUR_OF_DAY) * 10000) +
(c.get(Calendar.MINUTE) * 100) +
(c.get(Calendar.SECOND));
Log.w("TIME:", String.valueOf(currentTime));
return (String.valueOf(currentTime));
}
private void setListener() {
btnSave.setOnClickListener(this);
btnClear.setOnClickListener(this);
btnUndo.setOnClickListener(this);
btnRedo.setOnClickListener(this);
}
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.btnSave:
// Log.v("log_tag", "Panel Saved");
if (!CommonUtils.checkPermission(Signature.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
CommonUtils.requestPermission(Signature.this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, GALLERY_REQUEST);
} else {
mView.setDrawingCacheEnabled(true);
mSignature.save(mView);
}
case R.id.btnClear:
mSignature.clear();
// mPath=new Path();
// mSignature.invalidate();
btnSave.setEnabled(false);
break;
case R.id.btnUndo:
if (paths.size() > 0) {
undonePaths.add(paths.remove(paths.size() - 1));
mSignature.invalidate();
btnRedo.setEnabled(true);
}
break;
case R.id.btnRedo:
if (undonePaths.size() > 0) {
paths.add(undonePaths.remove(undonePaths.size() - 1));
btnRedo.setEnabled(true);
mSignature.invalidate();
}
break;
}
}
#Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
switch (requestCode) {
case GALLERY_REQUEST:
if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
mView.setDrawingCacheEnabled(true);
mSignature.save(mView);
}
break;
}
}
public class signature extends View {
private Bitmap mBitmap;
private Canvas mCanvas;
Context context;
private Paint mPaint;
private float mX, mY;
private static final float TOLERANCE = 5;
public signature(Context c, AttributeSet attrs) {
super(c, attrs);
context = c;
// we set a new Path
mPath = new Path();
// and we set a new Paint with the desired attributes
mPaint = new Paint();
mPaint.setAntiAlias(true);
mPaint.setColor(Color.WHITE);
mPaint.setStyle(Paint.Style.STROKE);
mPaint.setStrokeJoin(Paint.Join.ROUND);
mPaint.setStrokeWidth(15f);
}
public void save(View v) {
if (mBitmap == null) {
mBitmap = Bitmap.createBitmap(signLayout.getWidth(), signLayout.getHeight(), Bitmap.Config.RGB_565);
}
Canvas canvas = new Canvas(mBitmap);
if (paths.isEmpty() && undonePaths.isEmpty()) {
Snackbar snackbar = Snackbar.make(cordlayout, "Enter your signature", Snackbar.LENGTH_SHORT);
snackbar.show();
} else {
try {
FileOutputStream mFileOutStream = new FileOutputStream(mypath);
v.draw(canvas);
mBitmap.compress(Bitmap.CompressFormat.JPEG, 0, mFileOutStream);
mFileOutStream.flush();
mFileOutStream.close();
String url = MediaStore.Images.Media.insertImage(getContentResolver(), mBitmap, "title:" + current, null);
Log.v("log_tag", "url: " + url);
String rowId = getIntent().getStringExtra("RowId");
if (rowId != null) {
id = Long.parseLong(rowId);
Log.d("id:", String.valueOf(id));
signImage = Uri.fromFile(mypath);
Log.d("uri:", String.valueOf(signImage));
DataSource.updateSign(signImage, id);
}
Intent intent = new Intent(Signature.this, MainActivity.class);
intent.putExtra("RowId", String.valueOf(id));
setResult(1, intent);
startActivity(intent);
Intent in = getIntent();
String submitId = in.getStringExtra("Id");
if (submitId != null) {
long subId = Long.parseLong(submitId);
Uri recsignImage = Uri.fromFile(mypath);
DataSource.updateReceiversign(recsignImage, subId);
}
Intent intent1 = new Intent(Signature.this, MainActivity.class);
intent1.putExtra("ID", String.valueOf(submitId));
setResult(2, intent1);
startActivity(intent1);
//In case you want to delete the file
//boolean deleted = mypath.delete();
//Log.v("log_tag","deleted: " + mypath.toString() + deleted);
//If you want to convert the image to string use base64 converter
} catch (Exception e) {
Log.v("log_tag", e.toString());
}
}
}
// override onSizeChanged
#Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
super.onSizeChanged(w, h, oldw, oldh);
// your Canvas will draw onto the defined Bitmap
mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.RGB_565);
mCanvas = new Canvas(mBitmap);
}
// override onDraw
#Override
protected void onDraw(Canvas canvas) {
if (cc) {
Paint clearPaint = new Paint();
clearPaint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.CLEAR));
canvas.drawRect(0, 0, 0, 0, clearPaint);
cc = false;
}
// // draw the mPath with the mPaint on the canvas when onDraw
// canvas.drawPath(mPath, mPaint);
else {
for (Path p : paths) {
canvas.drawPath(p, mPaint);
}
canvas.drawPath(mPath, mPaint);
}
}
// when ACTION_DOWN start touch according to the x,y values
private void startTouch(float x, float y) {
undonePaths.clear();
mPath.reset();
mPath.moveTo(x, y);
mX = x;
mY = y;
}
// when ACTION_MOVE move touch according to the x,y values
private void moveTouch(float x, float y) {
float dx = Math.abs(x - mX);
float dy = Math.abs(y - mY);
if (dx >= TOLERANCE || dy >= TOLERANCE) {
mPath.quadTo(mX, mY, (x + mX) / 2, (y + mY) / 2);
mX = x;
mY = y;
}
}
// when ACTION_UP stop touch
private void upTouch() {
mPath.lineTo(mX, mY);
mCanvas.drawPath(mPath, mPaint);
paths.add(mPath);
mPath = new Path();
}
//override the onTouchEvent
#Override
public boolean onTouchEvent(MotionEvent event) {
float x = event.getX();
float y = event.getY();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
btnSave.setEnabled(true);
startTouch(x, y);
invalidate();
break;
case MotionEvent.ACTION_MOVE:
btnSave.setEnabled(true);
moveTouch(x, y);
invalidate();
break;
case MotionEvent.ACTION_UP:
btnSave.setEnabled(true);
upTouch();
invalidate();
break;
}
return true;
}
public void clear() {
paths.clear();
undonePaths.clear();
cc = true;
invalidate();
}
}
}
}
Wat to do if i want to set image in imageview of my adapter wid id ivReceiverSign?

Create interface
public interface ImageUrl{
void getImageUrl(String imageUrl)
}
implement this interface in adapter and send the url through another class using imageUrl.getImageUrl(imageUrl).
or Use EventBus library.
Reference to Eventbus : Green robot Event bus

How can I save my current imageview when onClick?

How can I save my current ImageView when I press onClick?
Im currently having the problem that the image that is next in line is being saved instead of the current actual image..
My Code for saving onLike
public class MainActivity extends Activity implements SwipeView.OnCardSwipedListener {
// Declaring variables
private final static int CARDS_MAX_ELEMENTS = 5;
private FrameLayout contentLayout;
private SwipeView mSwipeView;
private View addCardc41;
private Firebase mRef;
public ImageView imageLogo;
public ImageView imageview;
private static final String TAG = "MyActivity";
// Creating array of meals, getting them from the drawable folder
private int[] meals = {
R.drawable.a,
R.drawable.b,
R.drawable.c,
R.drawable.d,
R.drawable.e,
R.drawable.f,
R.drawable.g,
R.drawable.h,
R.drawable.i,
R.drawable.j
};
// Declaring a counter for the next method
private int count = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_swipe_view_demo);
contentLayout = (FrameLayout) findViewById(R.id.contentLayout);
imageLogo = (ImageView) findViewById(R.id.imageView3);
imageview = (ImageView) findViewById(R.id.imageView);
// Add the swipe view
mSwipeView = new SwipeView(this, R.id.imgSwipeLike, R.id.imgSwipeNope,
this);
contentLayout.addView(mSwipeView);
// Adding the cards initially with the maximum limits of cards.
for (int i = 0; i < CARDS_MAX_ELEMENTS; i++) {
addCard(i);
}
}
/**
* On clicked view.
*
* #param clickedView
* the clicked view
*/
public void onClickedView(View clickedView) {
switch (clickedView.getId()) {
case R.id.imgDisLike: {
mSwipeView.dislikeCard();
break;
}
case R.id.imgLike: {
mSwipeView.likeCard();
break;
}
}
}
#Override
public void onLikes() {
imageview.setDrawingCacheEnabled(true); //Add this line.
imageview.buildDrawingCache();
Bitmap bm=imageview.getDrawingCache();
OutputStream fOut = null;
Uri outputFileUri;
try {
File root = new File(Environment.getExternalStorageDirectory()
+ File.separator + "folder_name" + File.separator);
root.mkdirs();
File sdImageMainDirectory = new File(root, "myPicName.jpg");
outputFileUri = Uri.fromFile(sdImageMainDirectory);
fOut = new FileOutputStream(sdImageMainDirectory);
MediaScannerConnection.scanFile(this, new String[] { sdImageMainDirectory.getAbsolutePath() }, null, null);
} catch (Exception e) {
Toast.makeText(this, "Error occured. Please try again later.",
Toast.LENGTH_SHORT).show();
}
try {
bm.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
} catch (Exception e){}
System.out.println("An Card removed");
// Add a card if you needed after any previous card swiped
addCard(0);
}
#Override
public void onDisLikes() {
System.out.println("An Card removed");
// Add a card if you needed after any previous card swiped
addCard(0);
}
#Override
public void onSingleTap() {
}
/**
* Adds the card to the swipe.
*/
private void addCard(int position) {
final View cardView = LayoutInflater.from(this).inflate(
R.layout.item_swipe_view, null);
final ImageView imgMeal = (ImageView) cardView
.findViewById(R.id.imgMeals);
imgMeal.setImageResource(meals[count]);
count++;
if (count == meals.length) {
count = 0;
}
// Add a card to the swipe view..
mSwipeView.addCard(cardView, position);
// Create OnClickListener for the CookBookActivity
// Declare Button for the Cookbook
Button btn = (Button) findViewById(R.id.button3);
btn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startActivity(new Intent(MainActivity.this, CookbookActivity.class));
}
});
// Check Authentication
mRef = new Firebase(Constants.FIREBASE_URL);
if (mRef.getAuth() == null) {
loadLoginView();
}
}
private void loadLoginView() {
Intent intent = new Intent(this, LoginActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
startActivity(intent);
}
}
The Library that i'm using for the swiping
//
// credits to IntelliJ IDEA
// (powered by Fernflower decompiler)
package com.rk.lib.view;
import android.content.Context;
import android.os.Handler;
import android.os.Build.VERSION;
import android.view.GestureDetector;
import android.view.MotionEvent;
import android.view.View;
import android.view.GestureDetector.SimpleOnGestureListener;
import android.view.View.OnTouchListener;
import android.view.animation.AlphaAnimation;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.FrameLayout.LayoutParams;
public class SwipeView extends FrameLayout {
private View mFocusedView;
private View mFocusedViewLike;
private View mFocusedViewNope;
private int mFocusedViewWidth;
private float mPreviousAlpha = 0.0F;
private Integer mLikeResource = Integer.valueOf(0);
private Integer mNopeResource = Integer.valueOf(0);
private static final int MAX_ELEMENTS = 3;
private static final long DELAY_SCROLL_RUNNABLE = 1L;
private static final int SCROLL_LENGTH = 5;
private int mScrolledPixelsX;
private int mScrolledPixelsY;
private int mNeedToScrollX;
private int mNeedToScrollY;
private int mTotalScrolledX;
private int mTotalScrolledY;
private int mScrollLengthX = 5;
private int mScrollLengthY = 5;
private boolean enableTouchSwipe = true;
private Context mContext;
private SwipeView.ScrollMode mScrollModeX;
private SwipeView.ScrollMode mScrollModeY;
private SwipeView.ScrollDirection mScrollDirection;
private int[] paddingX;
private int[] paddingYTop;
private int[] paddingYBottom;
private SwipeView.OnCardSwipedListener mOnCardSwipedListener;
private Handler mScrollHandler;
private Runnable mScrollRunnable;
private final SimpleOnGestureListener simpleOnGestureListener;
public SwipeView(Context context, Integer likeResource, Integer nopeResource, SwipeView.OnCardSwipedListener cardSwipeListener) {
super(context);
this.mScrollModeX = SwipeView.ScrollMode.NONE;
this.mScrollModeY = SwipeView.ScrollMode.NONE;
this.mScrollDirection = SwipeView.ScrollDirection.NONE;
this.paddingX = new int[]{0, 10, 20};
this.paddingYTop = new int[]{0, 10, 20};
this.paddingYBottom = new int[]{20, 10, 0};
this.mScrollHandler = new Handler();
this.mScrollRunnable = new Runnable() {
public void run() {
boolean scrollX;
boolean scrollY;
int scrollX1;
int scrollY1;
if(SwipeView.this.mScrollDirection == SwipeView.ScrollDirection.OUT) {
if(SwipeView.this.mNeedToScrollX <= 0 && SwipeView.this.mNeedToScrollY <= 0) {
SwipeView.this.mScrollHandler.removeCallbacks(SwipeView.this.mScrollRunnable);
SwipeView.this.removeView(SwipeView.this.mFocusedView);
if(SwipeView.this.mScrollModeX == SwipeView.ScrollMode.LEFT) {
SwipeView.this.mOnCardSwipedListener.onLikes();
} else if(SwipeView.this.mScrollModeX == SwipeView.ScrollMode.RIGHT) {
SwipeView.this.mOnCardSwipedListener.onDisLikes();
}
SwipeView.this.alignCardsPadding();
} else {
if(SwipeView.this.mNeedToScrollX < SwipeView.this.mScrollLengthX) {
SwipeView.this.mScrollLengthX = SwipeView.this.mNeedToScrollX;
SwipeView.this.mNeedToScrollX = 0;
} else {
SwipeView.this.mNeedToScrollX = SwipeView.this.mNeedToScrollX - SwipeView.this.mScrollLengthX;
}
if(SwipeView.this.mNeedToScrollY < SwipeView.this.mScrollLengthY) {
SwipeView.this.mScrollLengthY = SwipeView.this.mNeedToScrollY;
SwipeView.this.mNeedToScrollY = 0;
} else {
SwipeView.this.mNeedToScrollY = SwipeView.this.mNeedToScrollY - SwipeView.this.mScrollLengthY;
}
scrollX = false;
scrollY = false;
if(SwipeView.this.mScrollModeX == SwipeView.ScrollMode.LEFT) {
scrollX1 = -SwipeView.this.mScrollLengthX;
} else {
scrollX1 = SwipeView.this.mScrollLengthX;
}
if(SwipeView.this.mScrollModeY == SwipeView.ScrollMode.TOP) {
scrollY1 = -SwipeView.this.mScrollLengthY;
} else {
scrollY1 = SwipeView.this.mScrollLengthY;
}
SwipeView.this.mFocusedView.scrollBy(scrollX1, scrollY1);
SwipeView.this.mScrollHandler.postDelayed(SwipeView.this.mScrollRunnable, 1L);
}
} else if(SwipeView.this.mScrollDirection == SwipeView.ScrollDirection.IN) {
if(SwipeView.this.mTotalScrolledX <= 0 && SwipeView.this.mTotalScrolledY <= 0) {
SwipeView.this.mScrollHandler.removeCallbacks(SwipeView.this.mScrollRunnable);
SwipeView.this.mScrollDirection = SwipeView.ScrollDirection.NONE;
} else {
if(SwipeView.this.mTotalScrolledX < SwipeView.this.mScrollLengthX) {
SwipeView.this.mScrollLengthX = SwipeView.this.mTotalScrolledX;
SwipeView.this.mTotalScrolledX = 0;
} else {
SwipeView.this.mTotalScrolledX = SwipeView.this.mTotalScrolledX - SwipeView.this.mScrollLengthX;
}
if(SwipeView.this.mTotalScrolledY < SwipeView.this.mScrollLengthY) {
SwipeView.this.mScrollLengthY = SwipeView.this.mTotalScrolledY;
SwipeView.this.mTotalScrolledY = 0;
} else {
SwipeView.this.mTotalScrolledY = SwipeView.this.mTotalScrolledY - SwipeView.this.mScrollLengthY;
}
scrollX = false;
scrollY = false;
if(SwipeView.this.mScrollModeX == SwipeView.ScrollMode.LEFT) {
scrollX1 = SwipeView.this.mScrollLengthX;
} else {
scrollX1 = -SwipeView.this.mScrollLengthX;
}
if(SwipeView.this.mScrollModeY == SwipeView.ScrollMode.TOP) {
scrollY1 = -SwipeView.this.mScrollLengthY;
} else {
scrollY1 = SwipeView.this.mScrollLengthY;
}
SwipeView.this.mFocusedView.scrollBy(scrollX1, scrollY1);
SwipeView.this.mScrollHandler.postDelayed(SwipeView.this.mScrollRunnable, 1L);
}
}
}
};
this.simpleOnGestureListener = new SimpleOnGestureListener() {
public boolean onSingleTapConfirmed(MotionEvent e) {
SwipeView.this.mOnCardSwipedListener.onSingleTap();
return super.onSingleTapConfirmed(e);
}
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
if(SwipeView.this.mFocusedView != null) {
SwipeView.this.mScrolledPixelsX = SwipeView.this.mScrolledPixelsX + (int)distanceX;
SwipeView.this.mScrolledPixelsY = SwipeView.this.mScrolledPixelsY + (int)distanceY;
SwipeView.this.mFocusedView.scrollBy((int)distanceX, (int)distanceY);
float alpha = (float)SwipeView.this.mScrolledPixelsX / (float)SwipeView.this.mFocusedViewWidth;
if(alpha > 0.0F) {
SwipeView.this.mFocusedViewNope.setVisibility(0);
SwipeView.this.mFocusedViewLike.setVisibility(8);
SwipeView.setAlpha(SwipeView.this.mFocusedViewNope, SwipeView.this.mPreviousAlpha, alpha);
SwipeView.this.mPreviousAlpha = alpha;
} else {
SwipeView.this.mFocusedViewNope.setVisibility(8);
SwipeView.this.mFocusedViewLike.setVisibility(0);
SwipeView.setAlpha(SwipeView.this.mFocusedViewLike, SwipeView.this.mPreviousAlpha, -alpha);
SwipeView.this.mPreviousAlpha = -alpha;
}
}
return true;
}
};
this.mContext = context;
this.mLikeResource = likeResource;
this.mNopeResource = nopeResource;
this.mOnCardSwipedListener = cardSwipeListener;
float density = this.getResources().getDisplayMetrics().density;
for(int gestureDetector = 0; gestureDetector < this.paddingX.length; ++gestureDetector) {
this.paddingX[gestureDetector] = (int)((float)this.paddingX[gestureDetector] * density);
this.paddingYTop[gestureDetector] = (int)((float)this.paddingYTop[gestureDetector] * density);
this.paddingYBottom[gestureDetector] = (int)((float)this.paddingYBottom[gestureDetector] * density);
}
final GestureDetector var7 = new GestureDetector(this.mContext, this.simpleOnGestureListener);
this.setOnTouchListener(new OnTouchListener() {
public boolean onTouch(View v, MotionEvent event) {
if(SwipeView.this.getChildCount() > 0) {
if(SwipeView.this.mScrollDirection != SwipeView.ScrollDirection.NONE) {
return false;
} else if(!SwipeView.this.enableTouchSwipe) {
return false;
} else {
var7.onTouchEvent(event);
switch(event.getAction()) {
case 0:
if(SwipeView.this.getChildCount() > 0) {
SwipeView.this.mFocusedView = SwipeView.this.getChildAt(SwipeView.this.getChildCount() - 1);
SwipeView.this.mFocusedViewLike = SwipeView.this.mFocusedView.findViewById(SwipeView.this.mLikeResource.intValue());
SwipeView.this.mFocusedViewNope = SwipeView.this.mFocusedView.findViewById(SwipeView.this.mNopeResource.intValue());
SwipeView.this.mFocusedViewWidth = SwipeView.this.mFocusedView.getWidth();
SwipeView.this.mFocusedView.setPadding(SwipeView.this.paddingX[0], 0, SwipeView.this.paddingX[0], 0);
}
SwipeView.this.resetScrollingValues();
break;
case 1:
SwipeView.this.alignCardsPadding();
if(SwipeView.this.mScrolledPixelsX < 0) {
SwipeView.this.mScrollModeX = SwipeView.ScrollMode.LEFT;
SwipeView.this.mTotalScrolledX = -SwipeView.this.mScrolledPixelsX;
} else {
SwipeView.this.mScrollModeX = SwipeView.ScrollMode.RIGHT;
SwipeView.this.mTotalScrolledX = SwipeView.this.mScrolledPixelsX;
}
if(SwipeView.this.mScrolledPixelsY < 0) {
SwipeView.this.mScrollModeY = SwipeView.ScrollMode.BOTTOM;
SwipeView.this.mTotalScrolledY = -SwipeView.this.mScrolledPixelsY;
} else {
SwipeView.this.mScrollModeY = SwipeView.ScrollMode.TOP;
SwipeView.this.mTotalScrolledY = SwipeView.this.mScrolledPixelsY;
}
SwipeView.this.detectSwipe();
}
return true;
}
} else {
return false;
}
}
});
}
public void addCard(View view, int position) {
if(this.getChildCount() <= 3 && position < 3) {
LinearLayout viewLayout = new LinearLayout(this.mContext);
viewLayout.setLayoutParams(new LayoutParams(-1, -1));
view.setLayoutParams(new LayoutParams(-1, -1));
viewLayout.addView(view);
viewLayout.setPadding(this.paddingX[position], this.paddingYTop[position], this.paddingX[position], this.paddingYBottom[position]);
this.addView(viewLayout, 0);
}
}
public void removeFocusedCard() {
this.removeView(this.mFocusedView);
this.alignCardsPadding();
}
private void alignCardsPadding() {
int i = 0;
for(int j = this.getChildCount() - 1; j >= 0; --j) {
this.getChildAt(j).setPadding(this.paddingX[i], this.paddingYTop[i], this.paddingX[i], this.paddingYBottom[i]);
++i;
}
this.mScrollDirection = SwipeView.ScrollDirection.NONE;
}
private void resetScrollingValues() {
this.mPreviousAlpha = 0.0F;
this.mNeedToScrollX = 0;
this.mScrolledPixelsX = 0;
this.mTotalScrolledX = 0;
this.mNeedToScrollY = 0;
this.mScrolledPixelsY = 0;
this.mTotalScrolledY = 0;
this.mScrollLengthX = 5;
this.mScrollLengthY = 5;
this.mScrollModeX = SwipeView.ScrollMode.NONE;
this.mScrollModeY = SwipeView.ScrollMode.NONE;
}
public void resetFocuedView() {
if(this.getChildCount() > 0) {
View mFocusedView = this.getChildAt(this.getChildCount() - 1);
View mFocusedViewLike = mFocusedView.findViewById(this.mLikeResource.intValue());
View mFocusedViewNope = mFocusedView.findViewById(this.mNopeResource.intValue());
setAlpha(mFocusedViewLike, 0.0F, 0.0F);
setAlpha(mFocusedViewNope, 0.0F, 0.0F);
mFocusedView.scrollTo(0, 0);
}
}
private void detectSwipe() {
int imageHalf = this.mFocusedView.getWidth() / 2;
this.mNeedToScrollX = this.mFocusedView.getWidth() - this.mTotalScrolledX;
if(this.mScrollDirection == SwipeView.ScrollDirection.NONE) {
if(this.mNeedToScrollX < imageHalf) {
this.mScrollDirection = SwipeView.ScrollDirection.OUT;
} else {
this.mScrollDirection = SwipeView.ScrollDirection.IN;
setAlpha(this.mFocusedViewLike, 0.0F, 0.0F);
setAlpha(this.mFocusedViewNope, 0.0F, 0.0F);
}
}
this.mScrollHandler.post(this.mScrollRunnable);
}
public void likeCard() {
if(this.getChildCount() > 0) {
this.mFocusedView = this.getChildAt(this.getChildCount() - 1);
this.mFocusedViewLike = this.mFocusedView.findViewById(this.mLikeResource.intValue());
this.mFocusedViewNope = this.mFocusedView.findViewById(this.mNopeResource.intValue());
if(this.mScrollDirection != SwipeView.ScrollDirection.NONE) {
return;
}
this.resetScrollingValues();
this.mScrollDirection = SwipeView.ScrollDirection.OUT;
this.mScrollModeX = SwipeView.ScrollMode.LEFT;
this.mFocusedViewLike.setVisibility(0);
setAlpha(this.mFocusedViewLike, 0.0F, 1.0F);
this.detectSwipe();
}
}
public void dislikeCard() {
if(this.getChildCount() > 0) {
this.mFocusedView = this.getChildAt(this.getChildCount() - 1);
this.mFocusedViewLike = this.mFocusedView.findViewById(this.mLikeResource.intValue());
this.mFocusedViewNope = this.mFocusedView.findViewById(this.mNopeResource.intValue());
if(this.mScrollDirection != SwipeView.ScrollDirection.NONE) {
return;
}
this.resetScrollingValues();
this.mScrollDirection = SwipeView.ScrollDirection.OUT;
this.mScrollModeX = SwipeView.ScrollMode.RIGHT;
this.mFocusedViewNope.setVisibility(0);
setAlpha(this.mFocusedViewNope, 0.0F, 1.0F);
this.detectSwipe();
}
}
public void setTouchable(boolean touchable) {
this.enableTouchSwipe = touchable;
}
public static void setAlpha(View view, float fromAlpha, float toAlpha) {
if(VERSION.SDK_INT < 11) {
AlphaAnimation alphaAnimation = new AlphaAnimation(fromAlpha, toAlpha);
alphaAnimation.setDuration(0L);
alphaAnimation.setFillAfter(true);
view.startAnimation(alphaAnimation);
} else {
view.setAlpha(toAlpha);
}
}
public interface OnCardSwipedListener {
void onLikes();
void onDisLikes();
void onSingleTap();
}
private static enum ScrollDirection {
IN,
OUT,
NONE;
private ScrollDirection() {
}
}
private static enum ScrollMode {
LEFT,
RIGHT,
TOP,
BOTTOM,
NONE;
private ScrollMode() {
}
}
}
ATTEMPT #3
This is the code that i've tried but I keep getting the same result (read comment below what I have done:
FrameLayout view = (FrameLayout)findViewById(R.id.contentLayout);
view.setDrawingCacheEnabled(true);
view.buildDrawingCache();
Bitmap bitmap = view.getDrawingCache();

I believe the image you are trying to save is getting removed during the onSwipe due to the library code. I think you need to move your code to before the onLike is called.
You're also attempting to get a bitmap from the cache of the entire layout, rather than the wanted ImageView here:
bm=contentLayout.getDrawingCache();
You'll want to get your current card view as a View, then, from my understanding of your code, the ID of your actual ImageView containing the expected bitmap is R.id.imgMeals, so I the suggest replacing the line:
bm=contentLayout.getDrawingCache();
with the following:
ImageView imageView = (ImageView) cardView.findViewById(R.id.imgMeals);
BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bm = drawable.getBitmap();
Move all of the below code from where you have it, to where I have marked //HERE!! in the following part of your code (or better, move it to a new method and call the method here).
// If the imageview of like is clicked
case R.id.imgLike: {
// HERE!!
// The imageview in the contentlayout will be swiped to the right
mSwipeView.likeCard();
break;
}
This is the code to me moved including the change I mention above:
View cardView = mSwipeView.getChildAt(mSwipeView.getChildCount() - 1);
ImageView imageView = (ImageView) cardView.findViewById(R.id.imgMeals);
BitmapDrawable drawable = (BitmapDrawable) imageView.getDrawable();
Bitmap bm = drawable.getBitmap();
OutputStream fOut = null;
try {
// Save on my sd card
File root = new File(Environment.getExternalStorageDirectory()
// Making a folder name Food Inspiration
+ File.separator + "Food Inspiration" + File.separator);
root.mkdirs();
File sdImageMainDirectory = null;
// Loop for having a different name for every image
int i = 0;
do {
sdImageMainDirectory = new File(root, "pic-" + i + ".png");
i++;
} while (sdImageMainDirectory.exists());
fOut = new FileOutputStream(sdImageMainDirectory);
// Updates the gallery of your phone with the folder and the "liked" images in it
MediaScannerConnection.scanFile(this, new String[] { sdImageMainDirectory.getAbsolutePath() }, null, null);
// If something goes wrong
} catch (Exception e) {
Toast.makeText(this, "Error occured. Please try again later.",
Toast.LENGTH_SHORT).show();
}
// Compresses the actual bitmap image
try {
bm.compress(Bitmap.CompressFormat.PNG, 100, fOut);
fOut.flush();
fOut.close();
} catch (Exception e){}

OpenCV Android - Process image that has been captured

I have a project that captures an image using OpenCV's CamerabridgeViewBase and another project that detects a pingpong ball. The problem is I can't combine those two projects. What I want is to capture a live feed, then return a single image that already has a detection in it.
Here are the classes of the project that can capture an image and store it in the gallery:
public final class MainActivity extends ActionBarActivity
implements CvCameraViewListener2 {
// A tag for log output.
private static final String TAG =
MainActivity.class.getSimpleName();
// A key for storing the index of the active camera.
private static final String STATE_CAMERA_INDEX = "cameraIndex";
// A key for storing the index of the active image size.
private static final String STATE_IMAGE_SIZE_INDEX =
"imageSizeIndex";
// An ID for items in the image size submenu.
private static final int MENU_GROUP_ID_SIZE = 2;
// The index of the active camera.
private int mCameraIndex;
// The index of the active image size.
private int mImageSizeIndex;
// Whether the active camera is front-facing.
// If so, the camera view should be mirrored.
private boolean mIsCameraFrontFacing;
// The number of cameras on the device.
private int mNumCameras;
// The image sizes supported by the active camera.
private List<Size> mSupportedImageSizes;
// The camera view.
private CameraBridgeViewBase mCameraView;
// Whether the next camera frame should be saved as a photo.
private boolean mIsPhotoPending;
// A matrix that is used when saving photos.
private Mat mBgr;
// Whether an asynchronous menu action is in progress.
// If so, menu interaction should be disabled.
private boolean mIsMenuLocked;
// The OpenCV loader callback.
private BaseLoaderCallback mLoaderCallback =
new BaseLoaderCallback(this) {
#Override
public void onManagerConnected(final int status) {
switch (status) {
case LoaderCallbackInterface.SUCCESS:
Log.d(TAG, "OpenCV loaded successfully");
mCameraView.enableView();
//mCameraView.enableFpsMeter();
mBgr = new Mat();
break;
default:
super.onManagerConnected(status);
break;
}
}
};
// Suppress backward incompatibility errors because we provide
// backward-compatible fallbacks.
#SuppressLint("NewApi")
#Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final Window window = getWindow();
window.addFlags(
WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
if (savedInstanceState != null) {
mCameraIndex = savedInstanceState.getInt(
STATE_CAMERA_INDEX, 0);
mImageSizeIndex = savedInstanceState.getInt(
STATE_IMAGE_SIZE_INDEX, 0);
} else {
mCameraIndex = 0;
mImageSizeIndex = 0;
}
final Camera camera;
if (Build.VERSION.SDK_INT >=
Build.VERSION_CODES.GINGERBREAD) {
CameraInfo cameraInfo = new CameraInfo();
Camera.getCameraInfo(mCameraIndex, cameraInfo);
mIsCameraFrontFacing =
(cameraInfo.facing ==
CameraInfo.CAMERA_FACING_FRONT);
mNumCameras = Camera.getNumberOfCameras();
camera = Camera.open(mCameraIndex);
} else { // pre-Gingerbread
// Assume there is only 1 camera and it is rear-facing.
mIsCameraFrontFacing = false;
mNumCameras = 1;
camera = Camera.open();
}
final Parameters parameters = camera.getParameters();
camera.release();
mSupportedImageSizes =
parameters.getSupportedPreviewSizes();
final Size size = mSupportedImageSizes.get(mImageSizeIndex);
mCameraView = new JavaCameraView(this, mCameraIndex);
mCameraView.setMaxFrameSize(size.width, size.height);
mCameraView.setCvCameraViewListener(this);
setContentView(mCameraView);
}
public void onSaveInstanceState(Bundle savedInstanceState) {
// Save the current camera index.
savedInstanceState.putInt(STATE_CAMERA_INDEX, mCameraIndex);
// Save the current image size index.
savedInstanceState.putInt(STATE_IMAGE_SIZE_INDEX,
mImageSizeIndex);
super.onSaveInstanceState(savedInstanceState);
}
// Suppress backward incompatibility errors because we provide
// backward-compatible fallbacks.
#SuppressLint("NewApi")
#Override
public void recreate() {
if (Build.VERSION.SDK_INT >=
Build.VERSION_CODES.HONEYCOMB) {
super.recreate();
} else {
finish();
startActivity(getIntent());
}
}
#Override
public void onPause() {
if (mCameraView != null) {
mCameraView.disableView();
}
super.onPause();
}
#Override
public void onResume() {
super.onResume();
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_0_0,
this, mLoaderCallback);
mIsMenuLocked = false;
}
#Override
public void onDestroy() {
if (mCameraView != null) {
mCameraView.disableView();
}
super.onDestroy();
}
#Override
public boolean onCreateOptionsMenu(final Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
if (mNumCameras < 2) {
// Remove the option to switch cameras, since there is
// only 1.
menu.removeItem(R.id.menu_next_camera);
}
int numSupportedImageSizes = mSupportedImageSizes.size();
if (numSupportedImageSizes > 1) {
final SubMenu sizeSubMenu = menu.addSubMenu(
R.string.menu_image_size);
for (int i = 0; i < numSupportedImageSizes; i++) {
final Size size = mSupportedImageSizes.get(i);
sizeSubMenu.add(MENU_GROUP_ID_SIZE, i, Menu.NONE,
String.format("%dx%d", size.width,
size.height));
}
}
return true;
}
// Suppress backward incompatibility errors because we provide
// backward-compatible fallbacks (for recreate).
#SuppressLint("NewApi")
#Override
public boolean onOptionsItemSelected(final MenuItem item) {
if (mIsMenuLocked) {
return true;
}
if (item.getGroupId() == MENU_GROUP_ID_SIZE) {
mImageSizeIndex = item.getItemId();
recreate();
return true;
}
switch (item.getItemId()) {
case R.id.menu_next_camera:
mIsMenuLocked = true;
// With another camera index, recreate the activity.
mCameraIndex++;
if (mCameraIndex == mNumCameras) {
mCameraIndex = 0;
}
mImageSizeIndex = 0;
recreate();
return true;
case R.id.menu_take_photo:
mIsMenuLocked = true;
// Next frame, take the photo.
mIsPhotoPending = true;
return true;
default:
return super.onOptionsItemSelected(item);
}
}
#Override
public void onCameraViewStarted(final int width,
final int height) {
}
#Override
public void onCameraViewStopped() {
}
#Override
public Mat onCameraFrame(final CvCameraViewFrame inputFrame) {
final Mat rgba = inputFrame.rgba();
if (mIsPhotoPending) {
mIsPhotoPending = false;
takePhoto(rgba);
}
if (mIsCameraFrontFacing) {
// Mirror (horizontally flip) the preview.
Core.flip(rgba, rgba, 1);
}
return rgba;
}
private void takePhoto(final Mat rgba) {
// Determine the path and metadata for the photo.
final long currentTimeMillis = System.currentTimeMillis();
final String appName = getString(R.string.app_name);
final String galleryPath =
Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES).toString();
final String albumPath = galleryPath + File.separator +
appName;
final String photoPath = albumPath + File.separator +
currentTimeMillis + LabActivity.PHOTO_FILE_EXTENSION;
final ContentValues values = new ContentValues();
values.put(MediaStore.MediaColumns.DATA, photoPath);
values.put(Images.Media.MIME_TYPE,
LabActivity.PHOTO_MIME_TYPE);
values.put(Images.Media.TITLE, appName);
values.put(Images.Media.DESCRIPTION, appName);
values.put(Images.Media.DATE_TAKEN, currentTimeMillis);
// Ensure that the album directory exists.
File album = new File(albumPath);
if (!album.isDirectory() && !album.mkdirs()) {
Log.e(TAG, "Failed to create album directory at " +
albumPath);
onTakePhotoFailed();
return;
}
// Try to create the photo.
Imgproc.cvtColor(rgba, mBgr, Imgproc.COLOR_RGBA2BGR, 3);
if (!Imgcodecs.imwrite(photoPath, mBgr)) {
Log.e(TAG, "Failed to save photo to " + photoPath);
onTakePhotoFailed();
}
Log.d(TAG, "Photo saved successfully to " + photoPath);
// Try to insert the photo into the MediaStore.
Uri uri;
try {
uri = getContentResolver().insert(
Images.Media.EXTERNAL_CONTENT_URI, values);
} catch (final Exception e) {
Log.e(TAG, "Failed to insert photo into MediaStore");
e.printStackTrace();
// Since the insertion failed, delete the photo.
File photo = new File(photoPath);
if (!photo.delete()) {
Log.e(TAG, "Failed to delete non-inserted photo");
}
onTakePhotoFailed();
return;
}
// Open the photo in LabActivity.
final Intent intent = new Intent(this, LabActivity.class);
intent.putExtra(LabActivity.EXTRA_PHOTO_URI, uri);
intent.putExtra(LabActivity.EXTRA_PHOTO_DATA_PATH,
photoPath);
runOnUiThread(new Runnable() {
#Override
public void run() {
startActivity(intent);
}
});
}
private void onTakePhotoFailed() {
mIsMenuLocked = false;
// Show an error message.
final String errorMessage =
getString(R.string.photo_error_message);
runOnUiThread(new Runnable() {
#Override
public void run() {
Toast.makeText(MainActivity.this, errorMessage,
Toast.LENGTH_SHORT).show();
}
});
}
--
public final class LabActivity extends ActionBarActivity {
public static final String PHOTO_FILE_EXTENSION = ".png";
public static final String PHOTO_MIME_TYPE = "image/png";
public static final String EXTRA_PHOTO_URI =
"com.nummist.secondsight.LabActivity.extra.PHOTO_URI";
public static final String EXTRA_PHOTO_DATA_PATH =
"com.nummist.secondsight.LabActivity.extra.PHOTO_DATA_PATH";
private Uri mUri;
private String mDataPath;
#Override
protected void onCreate(final Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
final Intent intent = getIntent();
mUri = intent.getParcelableExtra(EXTRA_PHOTO_URI);
mDataPath = intent.getStringExtra(EXTRA_PHOTO_DATA_PATH);
final ImageView imageView = new ImageView(this);
imageView.setImageURI(mUri);
setContentView(imageView);
}
#Override
public boolean onCreateOptionsMenu(final Menu menu) {
getMenuInflater().inflate(R.menu.activity_lab, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(final MenuItem item) {
switch (item.getItemId()) {
case R.id.menu_delete:
deletePhoto();
return true;
case R.id.menu_edit:
editPhoto();
return true;
case R.id.menu_share:
sharePhoto();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/*
* Show a confirmation dialog. On confirmation ("Delete"), the
* photo is deleted and the activity finishes.
*/
private void deletePhoto() {
final AlertDialog.Builder alert = new AlertDialog.Builder(
LabActivity.this);
alert.setTitle(R.string.photo_delete_prompt_title);
alert.setMessage(R.string.photo_delete_prompt_message);
alert.setCancelable(false);
alert.setPositiveButton(R.string.delete,
new DialogInterface.OnClickListener() {
#Override
public void onClick(final DialogInterface dialog,
final int which) {
getContentResolver().delete(
Images.Media.EXTERNAL_CONTENT_URI,
MediaStore.MediaColumns.DATA + "=?",
new String[] { mDataPath });
finish();
}
});
alert.setNegativeButton(android.R.string.cancel, null);
alert.show();
}
/*
* Show a chooser so that the user may pick an app for editing
* the photo.
*/
private void editPhoto() {
final Intent intent = new Intent(Intent.ACTION_EDIT);
intent.setDataAndType(mUri, PHOTO_MIME_TYPE);
startActivity(Intent.createChooser(intent,
getString(R.string.photo_edit_chooser_title)));
}
/*
* Show a chooser so that the user may pick an app for sending
* the photo.
*/
private void sharePhoto() {
final Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType(PHOTO_MIME_TYPE);
intent.putExtra(Intent.EXTRA_STREAM, mUri);
intent.putExtra(Intent.EXTRA_SUBJECT,
getString(R.string.photo_send_extra_subject));
intent.putExtra(Intent.EXTRA_TEXT,
getString(R.string.photo_send_extra_text));
startActivity(Intent.createChooser(intent,
getString(R.string.photo_send_chooser_title)));
}
}
And here are the classes of the pingpong ball detection project:
public class MainActivity extends AppCompatActivity {
private static final String TAG = "ObjTrackActivity";
private MenuItem mItemPreviewRGBA;
private MenuItem mItemPreviewTresholded;
public static boolean bShowTresholded = false;
public MainActivity() {
Log.i(TAG, "Instantiated new " + this.getClass());
}
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
Log.i(TAG, "onCreate");
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
requestWindowFeature(Window.FEATURE_NO_TITLE);
super.onCreate(savedInstanceState);
setContentView(new ObjTrackViewer(this));
}
public boolean onCreateOptionsMenu(Menu menu){
Log.i(TAG, "onCreateOptionsMenu");
mItemPreviewRGBA = menu.add("Preview RGBA");
mItemPreviewTresholded = menu.add("Preview Thresholded");
return true;
}
public boolean onOptionsItemSelected(MenuItem item){
Log.i(TAG, "Menu Item selected " + item);
if (item == mItemPreviewRGBA)
bShowTresholded = false;
else if (item == mItemPreviewTresholded)
bShowTresholded = true;
return true;
}
}
--
public class ObjTrackViewer extends SampleViewBase {
private int mFrameSize;
private Bitmap mBitmap;
private int[] mRGBA;
public ObjTrackViewer(Context context) {
super(context);
}
#Override
protected void onPreviewStared(int previewWidtd, int previewHeight) {
mFrameSize = previewWidtd * previewHeight;
mRGBA = new int[mFrameSize];
mBitmap = Bitmap.createBitmap(previewWidtd, previewHeight, Bitmap.Config.ARGB_8888);
}
#Override
protected void onPreviewStopped() {
if(mBitmap != null) {
mBitmap.recycle();
mBitmap = null;
}
mRGBA = null;
}
#Override
protected Bitmap processFrame(byte[] data) {
int[] rgba = mRGBA;
CircleObjectTrack(getFrameWidth(), getFrameHeight(), data, rgba, MainActivity.bShowTresholded);
Bitmap bmp = mBitmap;
bmp.setPixels(rgba, 0/* offset */, getFrameWidth() /* stride */, 0, 0, getFrameWidth(), getFrameHeight());
return bmp;
}
public native void CircleObjectTrack(int width, int height, byte yuv[], int[] rgba, boolean debug);
static {
System.loadLibrary("objtrack_opencv_jni");
}
}
--
public abstract class SampleViewBase extends SurfaceView implements SurfaceHolder.Callback, Runnable {
private static final String TAG = "Sample::SurfaceView";
private Camera mCamera;
private SurfaceHolder mHolder;
private int mFrameWidth;
private int mFrameHeight;
private byte[] mFrame;
private boolean mThreadRun;
private byte[] mBuffer;
public SampleViewBase(Context context) {
super(context);
mHolder = getHolder();
mHolder.addCallback(this);
Log.i(TAG, "Instantiated new " + this.getClass());
}
public int getFrameWidth() {
return mFrameWidth;
}
public int getFrameHeight() {
return mFrameHeight;
}
public void setPreview() throws IOException {
//if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB)
// mCamera.setPreviewTexture( new SurfaceTexture(10) );
//else
mCamera.setPreviewDisplay(null);
}
public void surfaceChanged(SurfaceHolder _holder, int format, int width, int height) {
Log.i(TAG, "surfaceCreated");
if (mCamera != null) {
Camera.Parameters params = mCamera.getParameters();
List<Camera.Size> sizes = params.getSupportedPreviewSizes();
mFrameWidth = width;
mFrameHeight = height;
// selecting optimal camera preview size
{
int minDiff = Integer.MAX_VALUE;
for (Camera.Size size : sizes) {
if (Math.abs(size.height - height) < minDiff) {
mFrameWidth = size.width;
mFrameHeight = size.height;
minDiff = Math.abs(size.height - height);
}
}
}
params.setPreviewSize(getFrameWidth(), getFrameHeight());
List<String> FocusModes = params.getSupportedFocusModes();
if (FocusModes.contains(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO))
{
params.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
}
mCamera.setParameters(params);
/* Now allocate the buffer */
params = mCamera.getParameters();
int size = params.getPreviewSize().width * params.getPreviewSize().height;
size = size * ImageFormat.getBitsPerPixel(params.getPreviewFormat()) / 8;
mBuffer = new byte[size];
/* The buffer where the current frame will be coppied */
mFrame = new byte [size];
mCamera.addCallbackBuffer(mBuffer);
try {
setPreview();
} catch (IOException e) {
Log.e(TAG, "mCamera.setPreviewDisplay/setPreviewTexture fails: " + e);
}
/* Notify that the preview is about to be started and deliver preview size */
onPreviewStared(params.getPreviewSize().width, params.getPreviewSize().height);
/* Now we can start a preview */
mCamera.startPreview();
}
}
public void surfaceCreated(SurfaceHolder holder) {
Log.i(TAG, "surfaceCreated");
mCamera = Camera.open();
mCamera.setPreviewCallbackWithBuffer(new PreviewCallback() {
public void onPreviewFrame(byte[] data, Camera camera) {
synchronized (SampleViewBase.this) {
System.arraycopy(data, 0, mFrame, 0, data.length);
SampleViewBase.this.notify();
}
camera.addCallbackBuffer(mBuffer);
}
});
(new Thread(this)).start();
}
public void surfaceDestroyed(SurfaceHolder holder) {
Log.i(TAG, "surfaceDestroyed");
mThreadRun = false;
if (mCamera != null) {
synchronized (this) {
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
mCamera.release();
mCamera = null;
}
}
onPreviewStopped();
}
/* The bitmap returned by this method shall be owned by the child and released in onPreviewStopped() */
protected abstract Bitmap processFrame(byte[] data);
/**
* This method is called when the preview process is beeing started. It is called before the first frame delivered and processFrame is called
* It is called with the width and height parameters of the preview process. It can be used to prepare the data needed during the frame processing.
* #param previewWidth - the width of the preview frames that will be delivered via processFrame
* #param previewHeight - the height of the preview frames that will be delivered via processFrame
*/
protected abstract void onPreviewStared(int previewWidtd, int previewHeight);
/**
* This method is called when preview is stopped. When this method is called the preview stopped and all the processing of frames already completed.
* If the Bitmap object returned via processFrame is cached - it is a good time to recycle it.
* Any other resourcses used during the preview can be released.
*/
protected abstract void onPreviewStopped();
public void run() {
mThreadRun = true;
Log.i(TAG, "Starting processing thread");
while (mThreadRun) {
Bitmap bmp = null;
synchronized (this) {
try {
this.wait();
bmp = processFrame(mFrame);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
if (bmp != null) {
Canvas canvas = mHolder.lockCanvas();
if (canvas != null) {
canvas.drawBitmap(bmp, (canvas.getWidth() - getFrameWidth()) / 2, (canvas.getHeight() - getFrameHeight()) / 2, null);
mHolder.unlockCanvasAndPost(canvas);
}
}
}
}
}