TextView的xml
<TextView android:id="@+id/textciew1" android:layout_width="match_parent" android:layout_height="wrap_content" android:background="#000" android:drawableRight="@drawable/button_nav_down" android:gravity="center_vertical" android:paddingLeft="16dp" android:paddingRight="16dp" android:text="展开" android:textColor="#fff" />在代码中如果要修改drawableRight设置的图片可以使用
但是API提示,setCompoundDrawables() 调用的时候,Drawable对象必须调用setBounds(int left, int top, int right, int bottom)方法,于是我们加一行代码就可以了
nav_up.setBounds(0, 0, nav_up.getMinimumWidth(), nav_up.getMinimumHeight());
Drawable nav_up=getResources().getDrawable(R.drawable.button_nav_up); nav_up.setBounds(0, 0, nav_up.getMinimumWidth(), nav_up.getMinimumHeight()); textview1.setCompoundDrawables(null, null, nav_up, null);