在res/drawable底下建的文件

改變組件顏色的文件
<selector xmlns:android=" http://schemas.android.com/apk/res/android" >
  <item android:state_focused="false"
        android:state_pressed="false" android:state_selected="false" 
        android:color="#000000" />
  <item android:state_focused="true" android:state_pressed="true" 
        android:color="#000000" /> 
  <item android:state_focused="false" android:state_pressed="true" 
        android:color="#f00" /> 
  <item android:state_selected="true" 
        android:color="#000000" /> 
  <item android:state_focused="true" 
        android:color="#ffffff" /> 
</selector>
 
設置背景樣式
<?xml version="1.0" encoding="utf-8"?>
<shape xmlns:android="http://schemas.android.com/apk/res/android" >
    <solid android:color="@color/white" />

     <!-- 設置四個角的半徑 -->
    <corners
        android:bottomLeftRadius="5dp"
        android:bottomRightRadius="5dp"
        android:topLeftRadius="5dp"
        android:topRightRadius="5dp" />
    <!-- 設置邊框  -->
     <stroke  
        android:width="0.01dp"  
        android:color="@color/black_ivoryw" />
</shape>
 
 
 
相同圖片資源文件,放在不一樣的drawable文件中顯示的不一樣效果,依次爲 drawable-hdip , drawable-ldip ,  drawable-mdip , drawable-xhdip, drawable-xxhdip, 自建的drawable  
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