Android Camera Intent: how to get full sized photo

问题:

I am using intent to launch camera:

Intent cameraIntent = new Intent(
    android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
getParent().startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);

and using:

Bitmap thumbnail = (Bitmap) data.getExtras().get(\"data\");
photoImage.setImageBitmap(thumbnail);
photoImage.setVisibility(View.VISIBLE);

But it is only a thumbnail, how do I get the full bitmap? I know I can use my own Activity and use:

Camera.PictureCallback()

But is there anyway to do it using Intent?

Thanks!

edit:

I also tried:

public void onActivityResult(int requestCode, int resultCode, Intent data) {
    Uri uri = data.getData();
    imageView.setImageURI(uri);
}

It works for photo selected from gallery, but for camera intent, data.getData() returns null.

回答1:

To get full sized camera image you should point camera to save picture in temporary file, like:

    private URI mImageUri;

    Intent intent = new Intent(\"android.media.action.IMAGE_CAPTURE\");
    File photo;
    try
    {
        // place where to store camera taken picture
        photo = this.createTemporaryFile(\"picture\", \".jpg\");
        photo.delete();
    }
    catch(Exception e)
    {
        Log.v(TAG, \"Can\'t create file to take picture!\");
        Toast.makeText(activity, \"Please check SD card! Image shot is impossible!\", 10000);
        return false;
    }
    mImageUri = Uri.fromFile(photo);
    intent.putExtra(MediaStore.EXTRA_OUTPUT, mImageUri);
    //start camera intent
    activity.startActivityForResult(this, intent, MenuShootImage);

private File createTemporaryFile(String part, String ext) throws Exception
{
    File tempDir= Environment.getExternalStorageDirectory();
    tempDir=new File(tempDir.getAbsolutePath()+\"/.temp/\");
    if(!tempDir.exists())
    {
        tempDir.mkdirs();
    }
    return File.createTempFile(part, ext, tempDir);
}

Then after image capture intent finished to work - just grab your picture from imageUri using following code:

public void grabImage(ImageView imageView)
{
    this.getContentResolver().notifyChange(mImageUri, null);
    ContentResolver cr = this.getContentResolver();
    Bitmap bitmap;
    try
    {
        bitmap = android.provider.MediaStore.Images.Media.getBitmap(cr, mImageUri);
        imageView.setImageBitmap(bitmap);
    }
    catch (Exception e)
    {
        Toast.makeText(this, \"Failed to load\", Toast.LENGTH_SHORT).show();
        Log.d(TAG, \"Failed to load\", e);
    }
}


//called after camera intent finished
@Override
public void onActivityResult(int requestCode, int resultCode, Intent intent)
{
    //MenuShootImage is user defined menu option to shoot image
    if(requestCode==MenuShootImage && resultCode==RESULT_OK) 
    {
       ImageView imageView;
       //... some code to inflate/create/find appropriate ImageView to place grabbed image
       this.grabImage(imageView);
    }
    super.onActivityResult(requestCode, resultCode, intent);
}

P.S. Code need to be revised with respect to new security restriction applied in Android M - FileProvider: mImageUri has to be packed with FileProvider

回答2:

Open Camera and save image into some specific directory

private String pictureImagePath = \"\";
private void openBackCamera() {
    String timeStamp = new SimpleDateFormat(\"yyyyMMdd_HHmmss\").format(new Date());
    String imageFileName = timeStamp + \".jpg\";
    File storageDir = Environment.getExternalStoragePublicDirectory(
            Environment.DIRECTORY_PICTURES);
    pictureImagePath = 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);
}

Handle Image

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == 1) {
    File imgFile = new  File(pictureImagePath);
        if(imgFile.exists()){        
       Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath());
       ImageView myImage = (ImageView) findViewById(R.id.imageviewTest);
       myImage.setImageBitmap(myBitmap);

        }
    }

}

回答3:

Even though this is an old question and it has an accepted answer,
I would like to share my solution.
In this case you don\'t have to create a temporary file.
Additionally we creating a chooser which offers to user both: take a picture with the camera or pick an existing one from a gallery.

    Intent galleryIntent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
    Intent cameraIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    Intent chooser = new Intent(Intent.ACTION_CHOOSER);
    chooser.putExtra(Intent.EXTRA_INTENT, galleryIntent);
    chooser.putExtra(Intent.EXTRA_TITLE, getString(R.string.chooseaction));
    Intent[] intentArray = {cameraIntent};
    chooser.putExtra(Intent.EXTRA_INITIAL_INTENTS, intentArray);
    startActivityForResult(chooser, RESULT_LOAD_IMAGE);

and here we retrieving results:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    // todo use appropriate resultCode in your case
    if (requestCode == RESULT_LOAD_IMAGE && resultCode == FragmentActivity.RESULT_OK) {
        if (data.getData() != null) {
            // this case will occur in case of picking image from the Gallery,
            // but not when taking picture with a camera
            try {
                Bitmap bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), data.getData());

                // do whatever you want with the Bitmap ....           

            } catch (IOException e) {
                e.printStackTrace();
            }
        } else {
            // this case will occur when taking a picture with a camera
            Bitmap bitmap = null;
            Cursor cursor = getActivity().getContentResolver().query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                    new String[]{MediaStore.Images.Media.DATA, MediaStore.Images.Media.DATE_ADDED,
                            MediaStore.Images.ImageColumns.ORIENTATION}, MediaStore.Images.Media.DATE_ADDED,
                    null, \"date_added DESC\");
            if (cursor != null && cursor.moveToFirst()) {
                Uri uri = Uri.parse(cursor.getString(cursor.getColumnIndex(MediaStore.Images.Media.DATA)));
                String photoPath = uri.toString();
                cursor.close();
                if (photoPath != null) {
                    bitmap = BitmapFactory.decodeFile(photoPath);
                }
            }

            if (bitmap == null) {
                // for safety reasons you can
                // use thumbnail if not retrieved full sized image
                bitmap = (Bitmap) data.getExtras().get(\"data\");
            }
            // do whatever you want with the Bitmap ....
        }

        super.onActivityResult(requestCode, resultCode, data);
    }
}

回答4:

I also used the answer from Vicky but I had to save the uri to a bundle to avoid loss of it on orientation change. So if you don\'t get a result from your intent after tilting the device it might be because your uri did not survive the orientation change.

static final int CAMERA_CAPTURE_REQUEST = 1;
static final String ARG_CURRENT_PIC_URI = \"CURRENT_PIC_URI\";


String pictureImagePath = folderName + \"/\" + imageFileName;
File file = new File(Environment.getExternalStorageDirectory(), pictureImagePath);
Uri outputFileUri = Uri.fromFile(file);

mCurrentPicUri = outputFileUri.getPath();

Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
startActivityForResult(cameraIntent, CAMERA_CAPTURE_REQUEST);

Activity Result code:

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {

  if (requestCode == CAMERA_CAPTURE_REQUEST && resultCode == Activity.RESULT_OK) 
  {
    File imgFile = new  File(mCurrentPicUri);
    // do something with your image
    // delete uri
    mCurrentPicUri = \"\";
  }
}

save the uri to the bundle:

@Override
public void onSaveInstanceState(Bundle outState) {
  super.onSaveInstanceState(outState);
  // save uri to bundle
  outState.putString(ARG_CURRENT_PIC_URI, mCurrentPicUri);
}

retrieve it from your saved bundle during on create:

if (bundle.containsKey(ARG_CURRENT_PIC_URI))
  mCurrentPicUri = bundle.getString(ARG_CURRENT_PIC_URI);

回答5:

To capture maximum picture size from camera, i hope these simple steps will be quite useful

 public static Camera mCamera;

Camera.Parameters parameters = mCamera.getParameters();
  parameters.getSupportedPictureSizes();
List<Camera.Size> supportedSizes = parameters.getSupportedPictureSizes();
  mSizePicture1 = supportedSizes.get(0);
  int cameraSize = supportedSizes.size();
  mSizePicture2 = supportedSizes.get(cameraSize - 1);

    if (mSizePicture1.height < mSizePicture2.height)
       mSizePicture = supportedSizes.get(cameraSize - 1);
    else
       mSizePicture = supportedSizes.get(0);

parameters.setPictureSize(mSizePicture.width, mSizePicture.height);

Here, the supported size of the each mobile is taken, from that which size is maximum that is fixed as picture size to capture.

回答6:

Don\'t use onActivityResult\'s data. It took me many hours to test different solutions. A camera saves a picture (even if you don\'t set permissions for camera and card reading in AndroidManifest), but then onActivityResult returns data == null and MediaStore returns wrong path. In these solutions you simply get last gallery image, not your photo.

private Uri photoUri;

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);

    ...
}

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == CAMERA_RESULT) {
        if (resultCode == RESULT_OK) {
            if (photoUri != null) {
                image.setImageURI(photoUri);
            }
        }
    }
}

private void showCamera() {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    if (intent.resolveActivity(getContext().getPackageManager()) != null) {
        File file = null;
        try {
            file = createImageFile();
        } catch (IOException e) {
            e.printStackTrace();
        }
        photoUri = null;
        if (file != null) {
            photoUri = Uri.fromFile(file);
            intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);
            startActivityForResult(intent, CAMERA_REQUEST);
        }
    }
}

private File createImageFile() throws IOException {
    // Create an image file name
    String timeStamp = new SimpleDateFormat(\"yyyyMMdd_HHmmss\").format(new Date());
    File storageDir = getContext().getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    // File storageDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
    return File.createTempFile(timeStamp, \".jpg\", storageDir);
}