private void performCrop() {

    try {

        //call the standard crop action intent (the user device may not support it)

        Intent cropIntent = new Intent("com.android.camera.action.CROP");

        //indicate image type and Uri

        cropIntent.setDataAndType(mImageCaptureUri, "image/*");

        //set crop properties

        cropIntent.putExtra("crop", "true");

        //indicate aspect of desired crop

        cropIntent.putExtra("aspectX", 4);

        cropIntent.putExtra("aspectY", 3);

        //indicate output X and Y

        cropIntent.putExtra("outputX", 800);

        cropIntent.putExtra("outputY", 800);

    File f = new File(Environment.getExternalStorageDirectory(),

            "/temporary_holder.jpg");

        try {

            f.createNewFile();

        } catch (IOException ex) {

        Log.e("io", ex.getMessage());

        }

uri = Uri.fromFile(f);

      cropIntent.putExtra(MediaStore.EXTRA_OUTPUT, uri);

        startActivityForResult(cropIntent, PIC_CROP);

    } //respond to users whose devices do not support the crop action

    catch (ActivityNotFoundException anfe) {

        //display an error message

        String errorMessage = "Your device doesn't support the crop action!";

        Toast toast = Toast.makeText(this, errorMessage, Toast.LENGTH_SHORT);

        toast.show();

    }

}

@Override

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

         if (requestCode == PIC_CROP) {

                  String filePath = Environment.getExternalStorageDirectory()

                        + "/temporary_holder.jpg";

                thumbnail = BitmapFactory.decodeFile(filePath);

                       //thumbnail =    BitmapFactory.decodeFile(filePath);

               //    Log.i("",String.valueOf(thumbnail.getHeight()));

                    ImageView image = (ImageView) findViewById(R.id.pestImage);

                    image.setImageBitmap(thumbnail);

                    }}