Android : How to detect the image orientation (portrait or landscape) picked from gallery while setting on an imageview?

Question

I am setting an image on the imageview picked from the gallery(camera album). If the picked image has landscape orientation, it displays perfectly but if the image in in portrait mode(i.e the image was clicked in portrait mode) it is displaying the image with a 90 degree rotation. Now I am trying to find out the orientation just before setting on imageview, but all the images are giving same orientation and same width-height. Here is my code :

Uri selectedImage = intent.getData();
if (selectedImage != null) {
    Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImage);

    int str = new ExifInterface(selectedImage.getPath()).getAttributeInt("Orientation", 1000);
    Toast.makeText(this, "value:" + str, Toast.LENGTH_LONG).show();
    Toast.makeText(this, "width:" + bitmap.getWidth() + "height:" + bitmap.getHeight(), Toast.LENGTH_LONG).show();

Answer 1

Use ExifInterface for rotate image. Use this method for get correct value to be rotate captured image from camera.

public int getCameraPhotoOrientation(Context context, Uri imageUri, String imagePath){
    int rotate = 0;
    try {
        context.getContentResolver().notifyChange(imageUri, null);
        File imageFile = new File(imagePath);

        ExifInterface exif = new ExifInterface(imageFile.getAbsolutePath());
        int orientation = exif.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);

        switch (orientation) {
        case ExifInterface.ORIENTATION_ROTATE_270:
            rotate = 270;
            break;
        case ExifInterface.ORIENTATION_ROTATE_180:
            rotate = 180;
            break;
        case ExifInterface.ORIENTATION_ROTATE_90:
            rotate = 90;
            break;
        }

        Log.i("RotateImage", "Exif orientation: " + orientation);
        Log.i("RotateImage", "Rotate value: " + rotate);
    } catch (Exception e) {
        e.printStackTrace();
    }
    return rotate;
}

And put this code in Activity result method and get value to rotate image...

String selectedImage = data.getData();
String[] filePathColumn = {MediaStore.Images.Media.DATA};

Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();

int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
filePath = cursor.getString(columnIndex);
cursor.close();

int rotateImage = getCameraPhotoOrientation(MyActivity.this, selectedImage, filePath);

Hope this helps..