I'm working on my app in Android and I'm having a little problem. On my MainActivity I take a picture and then save the path in a String, then I send this string to CameraActivity. This is my code:
btnCamera.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
});
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
Uri tempUri = getImageUri(getApplicationContext(), photo);
String ruta = getRealPathFromURI(tempUri);
Intent i = new Intent(getApplicationContext(), WarikeActivity.class);
i.putExtra("ruta",ruta);
startActivity(i);
}
}
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
public String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
}
Then, on CameraActivity I receive the path of the picture and Im trying this to put the picture on my ImageView
void events(){
Bundle extras = getIntent().getExtras();
ruta = extras.getString("ruta");
Bitmap imageBitmap = (Bitmap) extras.get(ruta);
imgWarike.setImageBitmap(imageBitmap);
}
But the Bitmap is null. Any idea why this happen? Thanks in advance.
Instead of taking picture and then get it path, first choose the path you want then save image there. take a look at below code:
private File file;
private URI imageUri;
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
String name = String.valueOf(System.currentTimeMillis() + ".jpg");
file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
if (!file.exists()) {
file.mkdirs();
}
File photo = new File(file, name);
intent.putExtra(MediaStore.EXTRA_OUTPUT,
Uri.fromFile(photo));
imageUri = Uri.fromFile(photo);
startActivityForResult(intent, CAMERA_REQUEST);
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
imageUri = data.getData();
Intent i = new Intent(getApplicationContext(), WarikeActivity.class);
i.putExtra("ruta", file);
startActivity(i);
}
}
If you are trying to get the bitmap from the path obtained from intent use this code.
Bitmap myBitmap = BitmapFactory.decodeFile(<yourFilepath>);
Or as you already obtained bitmap in your first activity, you directly send bitmap through intent as follows.
https://stackoverflow.com/a/2459624/5577385
You can do this:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Intent i = new Intent(getApplicationContext(), WarikeActivity.class);
i.putExtra("foto", byteArray);
startActivity(i);
}
And then:
void events(){
byte[] byteArray = getIntent().getByteArrayExtra("foto");
Bitmap foto = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length);
imgFoto.setImageBitmap(foto);
}
Have you tried to follow the official Android documentation about it ? http://developer.android.com/training/camera/photobasics.html
Related
I am trying to take a picture in Android using an Uri. But I am struggeling getting the bitmap from the created Uri. I always get a null-Object from my Uri.
Uri imgUri;
File newfile;
public static Button camButton;
public static ImageView img;
public static TextView text;
public void photo(Button cB, ImageView im, TextView tv) {
text = tv;
camButton = cB;
img = im;
camButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final String dir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/picFolder/";
File newdir = new File(dir);
newdir.mkdirs();
String file = dir + "test" + ".png";
newfile = new File(file);
try {
newfile.createNewFile();
} catch (IOException e) {
}
imgUri = FileProvider.getUriForFile(MainActivity.this,
BuildConfig.APPLICATION_ID + ".provider",
newfile);
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, imgUri);
startActivityForResult(cameraIntent, TAKE_PHOTO_CODE);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == TAKE_PHOTO_CODE && resultCode == RESULT_OK) {
Uri imageUri = FileProvider.getUriForFile(this, this.getApplicationContext().getPackageName() + ".provider", newfile);
Bitmap bitmap = null;
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);
} catch (Exception e) {
e.printStackTrace();
}
bitmap = Bitmap.createBitmap(bitmap,0,((bitmap.getHeight()-bitmap.getWidth()))/2,bitmap.getWidth(),bitmap.getWidth());
bitmap = Bitmap.createScaledBitmap(bitmap, 64, 64, true);
img.setImageBitmap(bitmap);
}
}
I am getting the error Could not write image : java.io.FileNotFoundException: open failed: ENOENT (No such file or directory)
And as a result of this the bitmap cannot be loaded and my bitmap is null, so that i receive a NullpointerException
try with this:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
Bitmap photo = null;
try {
photo = MediaStore.Images.Media.getBitmap(getContentResolver(), selectedImage);
} catch (IOException e) {
e.printStackTrace();
}
ByteArrayOutputStream baos = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 100, baos);
byte[] b = baos.toByteArray();
String encodedImage = Base64.encodeToString(b, Base64.DEFAULT);
byte[] decodedString = Base64.decode(encoded, Base64.DEFAULT);
Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
CircularImageView imageView = findViewById(R.id.profileimage);
imageView.setImageBitmap(decodedByte);
}
}
This question already has answers here:
data.getExtras().get("data") result of low resolution image in android
(2 answers)
Closed 4 years ago.
I integrated camera in my application and using that camera the captured image is blur. Any suggestions for improving captured image quality.
I am using multipart for sending image on server.
Code Snippet
#Override
public void openCameraAction() {
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, CAMERA_REQUEST);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == Constants.CAMERA_REQUEST && resultCode == Activity.RESULT_OK) {
photo = (Bitmap) data.getExtras().get("data");
imageBase64 = encodeToBase64(photo);
imageUri = getImageUri(getApplicationContext(), photo);
imageFile = new File(getRealPathFromURI(imageUri));
getImageView.setImageBitmap(photo);
RequestBody requestBody = RequestBody.create(MediaType.parse("multipart/form-data"),imageFile);
MultipartBody.Part image = MultipartBody.Part.createFormData(imageQuestionId, imageFile.getName(),requestBody);
parts.add(image);
}
}
public static String encodeToBase64(Bitmap image)
{
Bitmap immagex=image;
ByteArrayOutputStream baos = new ByteArrayOutputStream();
immagex.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] b = baos.toByteArray();
String imageEncoded = Base64.encodeToString(b, Base64.DEFAULT);
return imageEncoded;
}
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null);
return Uri.parse(path);
}
public String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
}
Find a class image picker in this gist
https://gist.github.com/r00786/2c9aa88b706daccd55098ac2c28e7f39
all the things are handled in this class
How to use
private static final int PICK_IMAGE_ID = 234; // the number doesn't matter
public void onPickImage(View view) {
Intent chooseImageIntent = ImagePicker.getPickImageIntent(this);
startActivityForResult(chooseImageIntent, PICK_IMAGE_ID);
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch(requestCode) {
case PICK_IMAGE_ID:
Bitmap bitmap = ImagePicker.getImageFromResult(this, resultCode, data);
// TODO use bitmap
break;
default:
super.onActivityResult(requestCode, resultCode, data);
break;
}
}
If you want the actual image taken camera to server u need to create
the image
Try this code
Delcare this Variable
private String actualPictureImagePath = "";
Then call this method on button click cameraIntent()
private void cameraIntent() {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String imageFileName = timeStamp + ".jpg";
File storageDir = Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES);
actualPictureImagePath = storageDir.getAbsolutePath() + "/" + imageFileName;
File file = new File(pictureImagePath);
Uri outputFileUri = Uri.fromFile(file);
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(cameraIntent, 1);
}
and Then in onActivityResult() handle this
#override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1) {
File imgFile = new File(actualPictureImagePath);
if(imgFile.exists()){
InputStream inputStream = null;//You can get an inputStream using any IO API
inputStream = new FileInputStream(imgFile.getAbsolutePath());
byte[] buffer = new byte[8192];
int bytesRead;
ByteArrayOutputStream output = new ByteArrayOutputStream();
Base64OutputStream output64 = new Base64OutputStream(output, Base64.DEFAULT);
try {
while ((bytesRead = inputStream.read(buffer)) != -1) {
output64.write(buffer, 0, bytesRead);
}
} catch (IOException e) {
e.printStackTrace();
}
output64.close();
String base64String = output.toString();
}
}
}
This is the code to use for Bitmap to Base64
ByteArrayOutputStream baos = new ByteArrayOutputStream();
myBitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos); //bm
is the bitmap object
byte[] byteArrayImage = baos.toByteArray();
String encodedImage = Base64.encodeToString(byteArrayImage,
Base64.DEFAULT);
NOTE:-
Do not forget to Add runtime permissions and in manifest also
1)Read and Write Persmission
2)Camera persmission
while debugging the below code, i am getting the value of picUri as null and i can see as picUri=null data:"Intent" {act=inline-data (has extras)}" in trace. Why does picUri is not having the corresponding uri and have data extras?
public void onClick(View v) {
if (v.getId() == R.id.capture_btn) {
try {
// use standard intent to capture an image
Intent captureIntent = new Intent(
MediaStore.ACTION_IMAGE_CAPTURE);
// we will handle the returned data in onActivityResult
startActivityForResult(captureIntent, CAMERA_CAPTURE);
} catch (ActivityNotFoundException anfe) {
Toast toast = Toast.makeText(this, "This device doesn't support the crop action!",
Toast.LENGTH_SHORT);
toast.show();
}
}
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (resultCode == RESULT_OK) {
if (requestCode == CAMERA_CAPTURE) {
// get the Uri for the captured image
picUri = data.getData();
}
}
}
Here you pass the camera Intent
private void INTENTCAMERA() {
Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
And after that captured your image
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAMERA_REQUEST && resultCode == RESULT_OK) {
Bitmap photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
knop.setVisibility(Button.VISIBLE);
// CALL THIS METHOD TO GET THE URI FROM THE BITMAP
Uri tempUri = getImageUri(getApplicationContext(), photo);
// CALL THIS METHOD TO GET THE ACTUAL PATH
File finalFile = new File(getRealPathFromURI(tempUri));
Log.e("ResultcapturedImage-->",mImageCaptureUri);
}
}
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = Images.Media.insertImage(inContext.getContentResolver(),
inImage, "Title", null);
return Uri.parse(path);
}
public String getRealPathFromURI(Uri uri) {
Cursor cursor = getContentResolver().query(uri, null, null, null, null);
cursor.moveToFirst();
int idx = cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA);
return cursor.getString(idx);
}
I have received the data in Bundle in onactivityresult and stored it into a file and got the uri from that file as shown below.
Bundle extras = data.getExtras();
Bitmap var_Bitmap = (Bitmap) extras.get("data");
ByteArrayOutputStream stream = new ByteArrayOutputStream();
var_Bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] bytes = stream.toByteArray();
try {
OutputStream out;
String root = Environment.getExternalStorageDirectory().getAbsolutePath()+"/";
File createDir = new File(root+"macro"+File.separator);
createDir.mkdir();
File file = new File(root + "macro" + File.separator +"macro.jpg");
file.createNewFile();
out = new FileOutputStream(file);
out.write(bytes);
out.close();
picUri= Uri.fromFile(file);
} catch (IOException e) {
// e.printStackTrace();
}
I have been trying to load an image from Google Photos App into my application. When I choose an image in Google Photos, my application crashes, but if I select the image from the Gallery App, it works. Please what am I missing out? Find my code below.
itemImage.setOnClickListener(new Button.OnClickListener() {
#Override
public void onClick(View v) {
pickImage();
}
});
public void pickImage() {
// Create intent to Open Image applications like Gallery, Google Photos
Intent galleryIntent = new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
galleryIntent.putExtra("crop", "true");
galleryIntent.putExtra("outputX", 100);
galleryIntent.putExtra("outputY", 100);
galleryIntent.putExtra("scale", true);
galleryIntent.putExtra("return-data", true);
// Start the Intent
startActivityForResult(galleryIntent, 1);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1 && resultCode == RESULT_OK && data != null && data.getData() != null) {
try {
//Uri uri = data.getData();
Bitmap bmp = (Bitmap) data.getExtras().get("data");
itemImage.setImageBitmap(bmp);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] b = baos.toByteArray();
String encodedImageString = Base64.encodeToString(b, Base64.DEFAULT);
byte[] bytarray = Base64.decode(encodedImageString, Base64.DEFAULT);
bmimage = BitmapFactory.decodeByteArray(bytarray, 0,
bytarray.length);
} catch (Exception e){}
}
}
I have tweaked the code a little bit. Now I can import all images on the Gallery and Photos app except for camera images. See my new code below:
public void pickImage() {
// Create intent to Open Image applications like Gallery, Google Photos
// Create intent to Open Image applications like Gallery, Google Photos
Intent galleryIntent = new Intent(Intent.ACTION_PICK);
galleryIntent.setType("image/*");
startActivityForResult(galleryIntent, 1);
}
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == 1 && resultCode == RESULT_OK && data != null && data.getData() != null) {
try {
//Uri uri = data.getData();
final Uri uri = data.getData();
final InputStream imageStream = getActivity().getContentResolver().openInputStream(uri);
final Bitmap bmp = BitmapFactory.decodeStream(imageStream);
itemImage.setImageBitmap(bmp);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bmp.compress(Bitmap.CompressFormat.PNG, 100, baos);
byte[] b = baos.toByteArray();
String encodedImageString = Base64.encodeToString(b, Base64.DEFAULT);
byte[] bytarray = Base64.decode(encodedImageString, Base64.DEFAULT);
/*bmimage = BitmapFactory.decodeByteArray(bytarray, 0,
bytarray.length);*/
} catch (Exception e){}
}
}
I am doing an android app, in which I have a functionality that, I need to open camera and take a picture. After taking picture onActivityResult is not called. my screen remains only in camera state.
My code:
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File mediaFile = new File(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI.getPath());
Uri imageUri = Uri.fromFile(mediaFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri);
startActivityForResult(intent, 1);
onActivityResult code
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (data != null && !data.toString().equalsIgnoreCase("Intent { }"))
switch (requestCode) {
case 1:
Log.i("StartUpActivity", "Photo Captured");
Uri uri = data.getData();
String imgPath = getRealPathFromURI(uri);
bitmap = (Bitmap) data.getExtras().get("data");
MediaStore.Images.Media.insertImage(getContentResolver(),
bitmap, null, null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
img1.setImageBitmap(bitmap);
}
}
onActivityResult is probably called, but the statements inside your if statement and switch/case statements are not being executed, because they are never reached.
The code below includes two methods takePhoto and onActivityResult, is very short and works perfectly. Take a look at it, it probably will help you!
public void takePhoto(View v) {
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(cameraIntent, CAMERA_REQUEST);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1) {
photo = (Bitmap) data.getExtras().get("data");
imageView.setImageBitmap(photo);
}
}
You can run your application in debug mode, after putting a breakpoint in onActivityResult method,
if it's stopping there after getting from the Camera then it's being called successfully.
and you could just change the if statement you're using making your code like this:
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data != null && resultCode = RESULT_OK)
switch (requestCode) {
case 1:
Log.i("StartUpActivity", "Photo Captured");
Uri uri = data.getData();
String imgPath = getRealPathFromURI(uri);
bitmap = (Bitmap) data.getExtras().get("data");
MediaStore.Images.Media.insertImage(getContentResolver(),
bitmap, null, null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
img1.setImageBitmap(bitmap);
}
}
and note that it is more recommended to using final ints as the request code instead of rewriting them everytime they're needed
like :
private final int START_CAMERA_REQUEST_CODE = 1;
I think this may be help you
Follow Below Code step by step and compare with your code to avoid null exception
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
startActivityForResult(intent, 1);
1 OnActivity Result
#Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == Activity.RESULT_OK) {
if (requestCode == 1)
onCaptureImageResult(data);
}
}
2
onCaptureImageResult
public void onCaptureImageResult(Intent data) {
Bitmap thumbnail = (Bitmap) data.getExtras().get("data");
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
thumbnail.compress(Bitmap.CompressFormat.JPEG, 90, bytes);
Uri tempUri = getImageUri(getApplicationContext(), thumbnail); // call getImageUri
File finalFile = new File(getRealPathFromURI(tempUri));
file_path = finalFile.getPath().toString(); // your file path
imgview.setImageBitmap(thumbnail);
// this code will get your capture image bitmap}
3 getImageUri
public Uri getImageUri(Context inContext, Bitmap inImage) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
inImage.compress(Bitmap.CompressFormat.JPEG, 100, bytes);
String path = MediaStore.Images.Media.insertImage(inContext.getContentResolver(), inImage, "Title", null); // your capture image URL code
return Uri.parse(path);
}
Using this code your screen will not remain more on camera state it will finish and image will be load as well you get image URL.
Bitmap mBitmap = BitmapFactory.decodeFile(imgPath);
pass Image path which you create from URI.
Probably, your activity is reloaded after camera is finished, but your code is not prepared to such situation.
See Android startCamera gives me null Intent and ... does it destroy my global variable?.
I think onActivity is called but it doesn't go into the if condition
Check only for null in if condition:
if (data != null )
switch (requestCode) {
case 1:
Log.i("StartUpActivity", "Photo Captured");
Uri uri = data.getData();
String imgPath = getRealPathFromURI(uri);
bitmap = (Bitmap) data.getExtras().get("data");
MediaStore.Images.Media.insertImage(getContentResolver(),
bitmap, null, null);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);
img1.setImageBitmap(bitmap);
}
From where you are calling startActivityForResult(intent, 1),
and where you Overriding onActivityResult() ?
I mean if you call startActivityForResult() from Frgment then you should override onActivityResult() in fragment it self, same applies to Activity also.