TextView Drawable实现点击

@Override
    public boolean onTouch(View v, MotionEvent event) {  //以rightDrawable为例
        if (event.getAction() == MotionEvent.ACTION_UP) {
            if (event.getRawX() >= mTitleText.getRight() - mTitleText.getTotalPaddingRight()) {
                onDrawableClick();
                return true;
            } else {
                performClick();
            }
        }
        return true;
    }