<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <!-- 沒有焦點時的背景圖片 -->
    <item android:drawable="@drawable/handle_normal" android:state_enabled="true" android:state_window_focused="false"/>
    <!-- 觸摸模式按下時的背景圖片 -->
    <item android:drawable="@drawable/handle_pressed" android:state_pressed="true"/>
    <item android:drawable="@drawable/handle_focused" android:state_enabled="true" android:state_focused="true"/>
    <item android:drawable="@drawable/handle_normal" android:state_enabled="true"/>
    <!-- 獲得焦點時的圖片背景 -->
    <item android:drawable="@drawable/handle_focused" android:state_focused="true"/>
    <!--
    android:state_selected是選中
 android:state_focused是獲得焦點
 android:state_pressed是點擊
 android:state_enabled是設置是否響應事件,指所有事件
    -->
</selector>

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item android:state_selected="true" android:color="#FFF" />
    <item android:state_focused="true" android:color="#FFF" />
    <item android:state_pressed="true" android:color="#FFF" />
    <item android:color="#000" />
</selector>

<SPAN style="COLOR: #330033"><?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">         /
<item android:state_pressed="true">//定義當button 處于pressed 狀態時的形態。
                <shape>
                <gradient  android:startColor="#8600ff" />
                      <stroke   android:width="2dp" android:color="#000000" />
                       <corners android:radius="5dp" /> 
                       <padding android:left="10dp" android:top="10dp"
                                android:bottom="10dp" android:right="10dp"/> 
                 </shape>
</item>
<item android:state_focused="true">//定義當button獲得 focus時的形態
                 <shape>
                       <gradient android:startColor="#eac100"/>
                       <stroke android:width="2dp" android:color="#333333"  color="#ffffff"/>
                       <corners android:radius="8dp" />  
                       <padding android:left="10dp" android:top="10dp"
                                android:bottom="10dp" android:right="10dp"/>                  
                </shape>
 </item>
</selector></SPAN><SPAN style="COLOR: #ff0000"> </SPAN>