Trying to create and Android Application with custom camera.
Following this tutorial:
http://developer.android.com/guide/topics/media/camera.html#
The application crashes whenever I take a picture, and I get this error in DDMS:
06-17 12:05:48.741: E/AndroidRuntime(2685): at com.add123.my.customcam.customcam.custumCam$1.onClick(custumCam.java:66)
Here is my code(Almost directly from the link above), I'm unsure of what's going wrong:
onCreate:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Remove Title Bar(Can also be done in manifest)
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_custum_cam);
// Create an instance of Camera
mCamera = getCameraInstance();
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(mPreview);
/* Take Pic */
// Add a listener to the Capture button
ImageButton captureButton = (ImageButton) findViewById(R.id.button_capture);
captureButton.setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
// get an image from the camera
mCamera.takePicture(null, null, mPicture);
}
}
);
}
Functions:
public static Camera getCameraInstance(){
Camera c = null;
try {
c = Camera.open(); // attempt to get a Camera instance
}
catch (Exception e){
// Camera is not available (in use or does not exist)
}
return c; // returns null if camera is unavailable
}
private PictureCallback mPicture = new PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (pictureFile == null){
Log.d(TAG, "Error creating media file, check storage permissions: " );
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(data);
fos.close();
} catch (FileNotFoundException e) {
Log.d(TAG, "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d(TAG, "Error accessing file: " + e.getMessage());
}
}
};
/** Create a file Uri for saving an image or video */
private static Uri getOutputMediaFileUri(int type){
return Uri.fromFile(getOutputMediaFile(type));
}
/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "MyCameraApp");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
Log.d("MyCameraApp", "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE){
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".jpg");
} else if(type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
Related
I am working in application in which I have to capture image from camera and save that image inside folder, Right now my code is working fine upto marshmallow but when testing in nougat, I am unable to save as well as unable to create folder. I have also given all the permission. Please tell me what I am doing wrong
This method is not working in naught
private Camera.PictureCallback mPicture = new Camera.PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (pictureFile == null){
Log.d("", "Error creating media file, check storage permissions: ");
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(data);
fos.close();
mCamera.stopPreview();
} catch (FileNotFoundException e) {
Log.d("", "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d("", "Error accessing file: " + e.getMessage());
}
}
};
This is my code for create and saving the image file
private File getOutputMediaFile(int type){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "Carco");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
Log.d("Carco", "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
///storage/emulated/0/Pictures/Carco
if (type == MEDIA_TYPE_IMAGE){
String img_name = "IMG_"+ timeStamp + ".jpg";
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
img_name);
imgPath = mediaStorageDir.getPath()+"/"+img_name;
Log.e("Path: ",mediaStorageDir.getPath()+"/"+img_name);
} else {
return null;
}
return mediaFile;
}
Google for runtime permissions.
You are #1237 with this problem this year.
/storage/emulated/0 IS BLANK. (using nbsp-team/ Material File Picker)
I am working an android camera app that uses a vertex shader to apply various distortion effects to the camera preview. Although the camera preview shows the desired effect, pictures do not. How do I get the picture/image to show the same effect as the camera preview? I hope my question is clear. Many thanks in anticipation.
Code extract is as follows:
Camera Activity:
public class CameraActivity extends Activity implements SurfaceTexture.OnFrameAvailableListener{
#SuppressWarnings("deprecation")
private Camera mCamera;
private PreviewCallback mPreviewCallback;
private MyGLSurfaceView glSurfaceView;
private SurfaceTexture surface;
MyGL20Renderer renderer;
public boolean mFrameAvailable = false;
public static final int MEDIA_TYPE_IMAGE = 1;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.screen);
FrameLayout surface = (FrameLayout)findViewById(R.id.camera_preview);
glSurfaceView = new MyGLSurfaceView(this);
renderer = glSurfaceView.getRenderer();
// setContentView(glSurfaceView);
surface.addView(glSurfaceView);
Button captureButton = (Button) findViewById(R.id.button_capture);
captureButton.setOnClickListener(
new View.OnClickListener() {
#SuppressWarnings("deprecation")
#Override
public void onClick(View v) {
// get an image from the camera
// mCamera.takePicture(null, null, mPicture);
// mCamera.setOneShotPreviewCallback(mPreviewCallback);
takeSnapPhoto();
}
}
);
}
#SuppressWarnings("deprecation")
public void startCamera(int texture)
{
surface = new SurfaceTexture(texture);
surface.setOnFrameAvailableListener(this);
renderer.setSurface(surface);
mCamera = Camera.open(CameraInfo.CAMERA_FACING_BACK);
try
{
mCamera.setPreviewTexture(surface);
mCamera.startPreview();
}
catch (IOException ioe)
{
Log.w("MainActivity","CAM LAUNCH FAILED");
}
Camera.Parameters param = mCamera.getParameters();
param.setPictureSize(640, 480);
// param.setColorEffect(Camera.Parameters.EFFECT_SEPIA);
mCamera.setParameters(param);
}
public void onFrameAvailable(SurfaceTexture surfaceTexture)
{
mFrameAvailable = true;
glSurfaceView.requestRender();
}
#SuppressWarnings("deprecation")
#Override
public void onPause()
{
mFrameAvailable = false;
mCamera.stopPreview();
mCamera.release();
System.exit(0);
}
#SuppressWarnings("deprecation")
private PictureCallback mPicture = new PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
// Bitmap bitmap = BitmapFactory.decodeByteArray(data , 0, data .length);
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (pictureFile == null){
Log.d("CrazyMirror", "Error creating media file, check storage permissions: ");
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
// bitmap.compress(Bitmap.CompressFormat.PNG,100, fos);
fos.write(data);
fos.close();
} catch (FileNotFoundException e) {
Log.d("CrazyMirror", "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d("CrazyMirror", "Error accessing file: " + e.getMessage());
}
refreshPreview();
}
};
/** Create a File for saving an image or video */
#SuppressLint("SimpleDateFormat")
private static File getOutputMediaFile(int type){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "CrazyMirror");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
Log.d("CrazyMirror", "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE){
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".jpg");
}
else if(type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
}
else {
return null;
}
return mediaFile;
}
#SuppressWarnings("deprecation")
public void refreshPreview() {
try {
mCamera.stopPreview();
} catch (Exception e) {}
try {
mCamera.startPreview();
} catch (Exception e) {}
}
public void takeSnapPhoto() {
mCamera.setOneShotPreviewCallback(new Camera.PreviewCallback() {
#Override
public void onPreviewFrame(byte[] data, Camera camera) {
Camera.Parameters parameters = camera.getParameters();
int format = parameters.getPreviewFormat();
//YUV formats require more conversion
if (format == ImageFormat.NV21 || format == ImageFormat.YUY2 || format == ImageFormat.NV16) {
int w = parameters.getPreviewSize().width;
int h = parameters.getPreviewSize().height;
// Get the YuV image
YuvImage yuv_image = new YuvImage(data, format, w, h, null);
// Convert YuV to Jpeg
Rect rect = new Rect(0, 0, w, h);
ByteArrayOutputStream output_stream = new ByteArrayOutputStream();
yuv_image.compressToJpeg(rect, 100, output_stream);
byte[] byt = output_stream.toByteArray();
FileOutputStream outStream = null;
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "CrazyMirror");
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".jpg");
try {
// Write to SD Card
// File file = createFileInSDCard(FOLDER_PATH, "Image_"+System.currentTimeMillis()+".jpg");
//Uri uriSavedImage = Uri.fromFile(file);
outStream = new FileOutputStream(mediaFile);
outStream.write(byt);
outStream.close();
} catch (FileNotFoundException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
} finally {
}
}
}
});}
}
I've made custom camera app, which works great but I'm stuck trying to get square images. For few days now I'm trying to make preview squared but now I'm thinking that is wrong approach especially when I read somewhere that Instagram app makes square images by hiding portion of preview with layout section which holds camera buttons (thus making preview look like it is square) and then cropping an image after it is taken. I have an idea how would I do first part but how would I crop image after its taken?
Here are my two methods which capture and save image:
private PictureCallback mPicture = new PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (pictureFile == null) {
Log.d("Camera error",
"Error creating media file, check storage permissions: ");
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(data);
fos.close();
} catch (FileNotFoundException e) {
Log.d("Camera error", "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d("Camera error", "Error accessing file: " + e.getMessage());
}
Intent intent = new Intent(MyCamera.this, NewItem.class);
intent.putExtra("imagePath", pictureFile.getAbsolutePath());
startActivity(intent);
}
};
/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type) {
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM),
"Pickante");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss")
.format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
} else if (type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "VID_" + timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
I am trying to save a image from camera. but its not working ..
Given permission
Code is pasted below. Not sure why its is not saving the image Code seems fine taken from developer.android site . Please help!
public class CameraActivity extends Activity {
private Camera mCamera;
private CameraPreview mPreview;
private Display display;
private int PreviewSizeWidth = 640;
private int PreviewSizeHeight= 480;
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
// Create an instance of Camera
mCamera = getCameraInstance();
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera,getWindowManager().getDefaultDisplay());
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(mPreview);
Button captureButton = (Button) findViewById(R.id.button1);
captureButton.setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
// get an image from the camera
Log.d("Take","Picture");
mCamera.takePicture(null, null, mPicture);
// mCamera.stopPreview();
// mCamera.startPreview();
}
}
);
}
private PictureCallback mPicture = new PictureCallback() {
#Override
public void onPictureTaken(byte[] data, Camera camera) {
Log.d("TAG","Callabaclk start");
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);;
if (pictureFile == null){
Log.d("TAG", "Error creating media file, check storage permissions: ");
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
Log.d("Ok",pictureFile.getAbsolutePath());
Bitmap bitmap = BitmapFactory.decodeByteArray(data, 0,data.length);
bitmap.compress(Bitmap.CompressFormat.JPEG, 90, fos);
//fos.write(data);
fos.flush();
fos.close();
Log.d("TAG","DONE");
} catch (FileNotFoundException e) {
Log.d("Test", "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d("Test", "Error accessing file: " + e.getMessage());
}
}
};
public static Camera getCameraInstance(){
Camera c = null;
try {
Log.d("Test",Camera.getNumberOfCameras()+"");
c = Camera.open(); // attempt to get a Camera instance
}
catch (Exception e){
Log.d("test", e.toString());
// Camera is not available (in use or does not exist)
}
return c; // returns null if camera is unavailable
}
public static boolean checkCameraHardware(Context context) {
if (context.getPackageManager().hasSystemFeature(PackageManager.FEATURE_CAMERA)){
// this device has a camera
return true;
} else {
// no camera on this device
return false;
}
}
private static File getOutputMediaFile(int type){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
// File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
// Environment.DIRECTORY_PICTURES), "MyCameraApp");
File sampleDir = Environment.getExternalStorageDirectory();
File mediaStorageDir = new File(sampleDir.getPath()+File.separator+"Path");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
mediaStorageDir.mkdirs();
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE){
// mediaFile = new File(mediaStorageDir.getPath() + File.separator +"Path_"+ timeStamp + ".jpg");
mediaFile = new File(mediaStorageDir.getPath() ,"Path_"+ timeStamp + ".jpg");
} else if(type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
}
When I do getPath() i get 08-14 02:31:52.153: D/Ok(4279): /storage/emulated/0/Path/Path_20130814_023152.jpg
After heck lot of research found it need to add these lines after fos.close :
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "Path");
sendBroadcast(new Intent(Intent.ACTION_MEDIA_MOUNTED,
Uri.parse("file://"+ mediaStorageDir)));
Thanks
Njoy
check permission
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
try to create a simple file
String path = Environment.getExternalStorageDirectory() + "/" + "test.jpg";
File file = new File(path);
if (!file.exists()) {
try {
file.createNewFile();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
Then verify whether you can save your picture
I am working on an app that needs to access an array of pixels from a picture after it is taken. The main Activity is below. I have a good amount of java experience but extremely limited experience with images past displaying them on the screen. I see the byte array being passed to the picture callback method but I do not know how it is formatted. How can I get a pixel array that includes the RGB components from the captured image? I tried to find this through the stack overflow forums however I got a few hundred pages of results and only searched through the first 10 or so, so I am sorry if that has already been asked and I just did not see it.
public class ConverterActivity extends Activity
{
private Camera mCamera;
private CameraPreview mPreview;
private PictureCallback mPicture = new PictureCallback() {
private String TAG;
#Override
public void onPictureTaken(byte[] data, Camera camera) {
File pictureFile = getOutputMediaFile(MEDIA_TYPE_IMAGE);
if (pictureFile == null){
// Log.d(TAG, "Error creating media file, check storage permissions: " +
// e.getMessage());
return;
}
try {
FileOutputStream fos = new FileOutputStream(pictureFile);
fos.write(data);
fos.close();
} catch (FileNotFoundException e) {
Log.d(TAG, "File not found: " + e.getMessage());
} catch (IOException e) {
Log.d(TAG, "Error accessing file: " + e.getMessage());
}
}
};
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// Add a listener to the Capture button
Button captureButton = (Button) findViewById(R.id.button_capture);
captureButton.setOnClickListener(
new View.OnClickListener() {
#Override
public void onClick(View v) {
// get an image from the camera
mCamera.takePicture(null, null, mPicture);
}
}
);
// Create an instance of Camera
mCamera = Camera.open(this.getBackCamera());
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) findViewById(R.id.camera_preview);
preview.addView(mPreview);
}
#Override
protected void onPause()
{
super.onPause();
releaseCamera(); // release the camera immediately on pause event
}
private void releaseCamera(){
if (mCamera != null){
mCamera.release(); // release the camera for other applications
mCamera = null;
}
}
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;
/** Create a file Uri for saving an image or video */
private static Uri getOutputMediaFileUri(int type){
return Uri.fromFile(getOutputMediaFile(type));
}
/** Create a File for saving an image or video */
private static File getOutputMediaFile(int type){
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "MyCameraApp");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()){
if (! mediaStorageDir.mkdirs()){
Log.d("MyCameraApp", "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE){
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_"+ timeStamp + ".jpg");
} else if(type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
public int getBackCamera()
{
int numCameras = Camera.getNumberOfCameras();
CameraInfo cInfo = new CameraInfo();
for (int i = 0; i < numCameras; i++)
{
Camera.getCameraInfo(i, cInfo);
if (cInfo.facing == CameraInfo.CAMERA_FACING_BACK)
{
return i;
}
}
return -1;
}
}
If you take the picture using code like this:
imgFile = new File(Environment.getExternalStorageDirectory () + "/somefolder/" + name + ".jpg");
String fileName = imgFile.getAbsolutePath();
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(fileName)));
startActivityForResult(intent, REQUEST_FROM_CAMERA);
Then you should be able to, when you get the result back from this intent, using code like this to access the bitmap
if (imgFile.exists()) {
String fileName = file.getAbsolutePath();
BitmapFactory.Options opts = new BitmapFactory.Options();
Bitmap bm;
opts.inJustDecodeBounds = false;
bm = BitmapFactory.decodeFile(fileName, opts);
return bm;
}
else return null;
Then you can use bitmapfactory tools, such as compress to stream and then
convert to byte[]
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, stream); // 100 = max quality
byte[] byteArray = stream.toByteArray();