TextView，Button 等设置 setCompoundDrawables 无效

项目中遇到在代码中设置textview设置图标不显示的问题，后来知道图标必须setBounds

 viewHolder.idTvTitle.setText(MainStone);                    Drawable dra = getResources().getDrawable(R.drawable.icon_add2);                    dra.setBounds(0, 0, dra.getMinimumWidth(), dra.getMinimumHeight());                    viewHolder.idTvTitle.setCompoundDrawables(null,null,null,dra);