Drawable Image给出“找不到资源..”，但是它在文件夹中

Question

I have the below XML in slider_button.xml:

<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_focused="true" 
          android:state_pressed="false" 
          android:drawable="@android:drawable/button9patch" />
    ...
</selector>

The android:drawable="@android:drawable/button9patch" gets the error:

Error: No resource found that matches the given name (at 'drawable' with value '@android:drawable/button9patch').

However I think I have the file in the right place (I've even put it in all the drawable folders to be sure):

What am I doing wrong? Thanks

Answer 1

像这样改变

 android:drawable="@drawable/button9patch"