点击效果drawable

普通点击效果 写在drawable文件

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android" >    
      <item android:state_pressed="true">    
            <shape android:shape="rectangle">        
                  <solid android:color="#33000000"/>   
             </shape>
      </item>
      <item>    
            <shape android:shape="rectangle">        
                  <solid android:color="#FFFFFF"/>    
           </shape>
      </item>
</selector>

涟漪点击效果 写在drawable-v21文件

android:clickable="true"

<?xml version="1.0" encoding="utf-8"?>
<ripple xmlns:android="http://schemas.android.com/apk/res/android"
        android:color="#33FFFFFF">    
    <item>        
        <shape android:shape="rectangle">            
            <solid android:color="#FFFFFF" />       
       </shape>    
    </item>
</ripple>