how to get the source of ImageView in order to change it?

Question

I know that changing the ImageView resource is not big deal just using myImageView.setImageResource(mynewImageDrawable)

but what I want to do is to chec

Answer 1

I had same problem and here is my working solutions:

public void engLayoutExpand(View view) {
    ImageView iv = (ImageView) view;

    // One way:
    Bitmap bm1 = ((BitmapDrawable) iv.getDrawable()).getBitmap();
    Bitmap bm2 = ((BitmapDrawable) getResources().getDrawable(R.drawable.baseline_expand_less_black_36)).getBitmap();

    if (bm1 == bm2) {
        iv.setImageResource(R.drawable.baseline_expand_more_black_36);
    }

    // Other way
    Drawable.ConstantState cs1 = iv.getDrawable().getConstantState();
    Drawable.ConstantState cs2 = getResources().getDrawable(R.drawable.baseline_expand_less_black_36).getConstantState();

    if ( cs1 == cs2) {
        iv.setImageResource(R.drawable.baseline_expand_more_black_36);
    }

}