Border(like shadow) solid and large on TextView Android

I am using that "hack". I have read here in stackoverflow.

@Override
public void draw(Canvas canvas) {
    for (int i = 0; i < 20; i++) {
        super.draw(canvas);
    }
}

But my border still smoothie,I wanna put a large and solid border on all my TextView (I already have my component extend a textview).

I have a selector in text color when I click in this text the text color need to change.(It was already working,but I tried to apply another alternative using canvas,in this alternative,I lost this comportment).