Intent intent = new Intent(Intent.ACTION_GET_CONTENT);
    intent.setType("image/*");
    String[] mimeTypes = {"image/jpeg", "image/png"};
    intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
    intent.putExtra(Intent.EXTRA_MIME_TYPES, mimeTypes);
    intent.putExtra(Intent.EXTRA_ALLOW_MULTIPLE, true);
    setResult(Activity.RESULT_OK, intent);
    startActivityForResult(intent, PICK_IMAGE);