android progressBar 背景改变

//progress_horizontal.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list  xmlns:android="http://schemas.android.com/apk/res/android" >
   <item android:id="@android:id/progress">
          <clip>
             <shape>
                 <corners android:radius="10dip" />
                <gradient
                        android:startColor="#ffa4cf2f"
                         android:centerColor="#ffbee061"
                        android:centerY="0.5"
                         android:endColor="#ff87b704"
                        android:angle="270"
                  
               />
             </shape>
         </clip>
    </item>
</layer-list>

 

 

 

 

 

 

 

 

 

 

 

 

 

 

   <ProgressBar
        android:id="@+id/ProgressBar"
        style="?android:attr/progressBarStyleHorizontal"
        android:layout_width="200dp"
        android:layout_height="15dp"
        android:layout_marginLeft="30dp"
        android:layout_marginTop="54dp"
        android:minWidth="150dp"
        android:max="100"
        android:layout_gravity="center_horizontal|bottom"
        android:visibility="gone"
        android:background="@drawable/pb1"
        android:progressDrawable="@drawable/progress_horizontal"
       
   />