How to get image path in onActivityresult (Intent data is null)

Question

I need to start the camera, and when users took a picture, I have to take it and show it in the view.

Looking at http://developer.android.com/guide/topics/media/camera.html I did:

protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); bLaunchCamera = (Button) findViewById(R.id.launchCamera); bLaunchCamera.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Log.d(TAG, "lanzando camara"); //create intent to launch camera Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); imageUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); //create a file to save the image intent.putExtra(MediaStore.EXTRA_OUTPUT, imageUri); //set the image file name //start camera startActivityForResult(intent, CAMERA_REQUEST); } }); /** * Create a File Uri for saving image (can be sued to save video to) **/ private Uri getOutputMediaFileUri(int mediaTypeImage) { return Uri.fromFile(getOutputMediaFile(mediaTypeImage)); } /** * Create a File for saving image (can be sued to save video to) **/ private File getOutputMediaFile(int mediaType) { //To be safe, is necessary to check if SDCard is mounted File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), (String) getResources().getText(R.string.app_name)); //create the storage directory if it does not exist if (!mediaStorageDir.exists()) { if (!mediaStorageDir.mkdirs()) { Log.d(TAG, "failed to create directory"); return null; } } //Create a media file name String timeStamp = new SimpleDateFormat("ddMMyyyy_HHmmss").format(new Date()); File mediaFile; if (mediaType == MEDIA_TYPE_IMAGE) { mediaFile = new File(mediaStorageDir.getPath() + File.separator + "IMG_" + timeStamp + ".jpg"); } else { return null; } return mediaFile; } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { if(requestCode == CAMERA_REQUEST) { if(resultCode == RESULT_OK) { //Image captured and saved to fileUri specified in Intent Toast.makeText(this, "image saved to:\n" + data.getData(), Toast.LENGTH_LONG).show(); Log.d(TAG, "lanzando camara"); } else if(resultCode == RESULT_CANCELED) { //user cancelled the image capture; Log.d(TAG, "usuario a cancelado la captura"); } else { //image capture failed, advise user; Log.d(TAG, "algo a fallado"); } } } 

When the image was taken, the application crashes when it tries to send “Toast” information because the “data” is zero.

But if I debug the application, I see that the image has been saved.

So my question is: how can I get the path in onActivityResult?

Answer 1

Here is the code I used for Capturing and Saving Camera Image, then displays it in image view. You can use as per your needs.

You need to save the camera image to a specific location, and then extract from that location, and then convert it to a byte array.

Here is a way to open capturing camera image activity.

 private static final int CAMERA_PHOTO = 111; private Uri imageToUploadUri; private void captureCameraImage() { Intent chooserIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE); File f = new File(Environment.getExternalStorageDirectory(), "POST_IMAGE.jpg"); chooserIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(f)); imageToUploadUri = Uri.fromFile(f); startActivityForResult(chooserIntent, CAMERA_PHOTO); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); if (requestCode == CAMERA_PHOTO && resultCode == Activity.RESULT_OK) { if(imageToUploadUri != null){ Uri selectedImage = imageToUploadUri; getContentResolver().notifyChange(selectedImage, null); Bitmap reducedSizeBitmap = getBitmap(imageToUploadUri.getPath()); if(reducedSizeBitmap != null){ ImgPhoto.setImageBitmap(reducedSizeBitmap); Button uploadImageButton = (Button) findViewById(R.id.uploadUserImageButton); uploadImageButton.setVisibility(View.VISIBLE); }else{ Toast.makeText(this,"Error while capturing Image",Toast.LENGTH_LONG).show(); } }else{ Toast.makeText(this,"Error while capturing Image",Toast.LENGTH_LONG).show(); } } } 

Here is the getBitmap () method used in onActivityResult (). I have made all the performance improvements that may be possible when getting a bitmap image from a camera.

 private Bitmap getBitmap(String path) { Uri uri = Uri.fromFile(new File(path)); InputStream in = null; try { final int IMAGE_MAX_SIZE = 1200000; // 1.2MP in = getContentResolver().openInputStream(uri); // Decode image size BitmapFactory.Options o = new BitmapFactory.Options(); o.inJustDecodeBounds = true; BitmapFactory.decodeStream(in, null, o); in.close(); int scale = 1; while ((o.outWidth * o.outHeight) * (1 / Math.pow(scale, 2)) > IMAGE_MAX_SIZE) { scale++; } Log.d("", "scale = " + scale + ", orig-width: " + o.outWidth + ", orig-height: " + o.outHeight); Bitmap b = null; in = getContentResolver().openInputStream(uri); if (scale > 1) { scale--; // scale to max possible inSampleSize that still yields an image // larger than target o = new BitmapFactory.Options(); o.inSampleSize = scale; b = BitmapFactory.decodeStream(in, null, o); // resize to desired dimensions int height = b.getHeight(); int width = b.getWidth(); Log.d("", "1th scale operation dimenions - width: " + width + ", height: " + height); double y = Math.sqrt(IMAGE_MAX_SIZE / (((double) width) / height)); double x = (y / height) * width; Bitmap scaledBitmap = Bitmap.createScaledBitmap(b, (int) x, (int) y, true); b.recycle(); b = scaledBitmap; System.gc(); } else { b = BitmapFactory.decodeStream(in); } in.close(); Log.d("", "bitmap size - width: " + b.getWidth() + ", height: " + b.getHeight()); return b; } catch (IOException e) { Log.e("", e.getMessage(), e); return null; } } 

Hope this helps!

Answer 2

Amigo

The problem you are facing is that whenever we select an image from the camera’s intent, it can complete the action that caused it, so the imageUri object you created will be null until you return.

so you need to save it when you exit the action (to go to camera intent), for example:

  /** * Here we store the file url as it will be null after returning from camera * app */ @Override protected void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); // save file url in bundle as it will be null on screen orientation // changes outState.putParcelable("file_uri", mImageUri); } 

and bring it back when you return to activity -

  @Override protected void onRestoreInstanceState(Bundle savedInstanceState) { super.onRestoreInstanceState(savedInstanceState); // get the file url mImageUri = savedInstanceState.getParcelable("file_uri"); } 

Your code looks good, you only need to add this change.