【Android】动态设置android:drawableLeft|Right|Top|Bottom

<TextView
        android:id="@+id/bookTitle"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:drawableLeft="@drawable/checkmark"
        android:drawableRight="@drawable/checkmark"
        android:drawableTop="@drawable/checkmark"
        android:gravity="center_vertical"
        android:textStyle="bold"
        android:textSize="20dip"
        android:maxLines="1"
        android:ellipsize="end"/>

Drawable img_on, img_off;
Resources res = getResources();
img_off = res.getDrawable(R.drawable.btn_strip_mark_off);
//调用setCompoundDrawables时，必须调用Drawable.setBounds()方法,否则图片不显示
img_off.setBounds(0, 0, img_off.getMinimumWidth(), img_off.getMinimumHeight());
btn.setCompoundDrawables(img_off, null, null, null); //设置左图标