How do you check if two Drawables are the same?

Question

Good night ! I’m having trouble recovering the current image from my android imageView. It is a favorite image for the user(dar like), and I want that when the user click on this image, I check if the current image is = to an unfilled heart icon, if yes then run the like function, otherwise run the descurtit function. In the current code the validation always comes out as FALSE, even when it should be TRUE and the variable drawable is receiving = ""

public void favoritar(){

    Versiculos favoritar = new Versiculos();
    SharedPreferencias preferencias = new SharedPreferencias(getApplicationContext());

    Drawable drawable = imLike.getDrawable();

    if (drawable.equals(R.drawable.ic_favorite_border)){
        //Curtindo
        favoritar.curtirVersiculo(idVersiculo, preferencias.getCHAVE_ID());
        imLike.setImageResource(R.drawable.ic_favorite);

    } else {
        //Descurtindo
        favoritar.descurtirVersiculo(idVersiculo, preferencias.getCHAVE_ID());
        imLike.setImageResource(R.drawable.ic_favorite_border);

    }
}

Thank you!

Answer 1

You’re comparing a Drawable to a whole(R.drawable.ic_favorite_border is a whole).

On the other hand, to compare Drawables, you must use the object returned by the method getConstantState().

Start by getting Drawable corresponding to id R.drawable.ic_favorite_border

Drawable favoriteBorder = getResources().getDrawable(R.drawable.ic_favorite_border);

then make the comparison like this:

if (drawable.getConstantState().equals(favoriteBorder.getConstantState())){

}