res/drawable/btn.xml

   1 <?xml version="1.0" encoding="UTF-8"?>
   2 <selector xmlns:android="http://schemas.android.com/apk/res/android">
   3   <item android:state_focused="true" android:state_pressed="true" android:drawable="@drawable/btn_round_pressed" />
   4   <item android:state_focused="true" android:state_pressed="false" android:drawable="@drawable/btn_round_pressed" />
   5   <item android:state_focused="false" android:state_pressed="true" android:drawable="@drawable/btn_round_pressed" />
   6   <item android:state_focused="false" android:state_pressed="true" android:drawable="@drawable/btn_round_pressed" />
   7   <item android:drawable="@drawable/btn_round"/>
   8 </selector>