Button在代码中实现drawableTop

@Override    public void setReservedBtn(int img, String name) {        Drawable drawable=context.getResources().getDrawable(img);        drawable.setBounds(0, 0, drawable.getMinimumWidth(), drawable.getMinimumHeight());        reservedBtn.setCompoundDrawables(null,drawable,null,null);        reservedBtn.setText(name);    }