Open Gallery App in Android

Question

I am trying to open inbuilt gallery app pressing a button in my app.

I am trying out on Android 2.3 and above phones. The phones/tablet that I have are

Samsung

Answer 1

Try This out

btnGallery.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent();
        intent.setType("image/*");
        intent.setAction(Intent.ACTION_GET_CONTENT);
        startActivityForResult(Intent.createChooser(intent, ""), PICK_IMAGE);
    }
});

UPDATE onActivityResult

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (resultCode != Activity.RESULT_CANCELED) {
        if (requestCode == PICK_IMAGE) {
            Uri selectedImageUri = data.getData();
        } 
    }
}

UPDATE TO OPEN GALLERY APP

Intent galleryIntent = new Intent(Intent.ACTION_VIEW, android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivity(galleryIntent);