<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context="com.ipu.scan.ScanActivity" >
    
            
	 <SurfaceView
        android:id="@+id/preview_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="center" />
	 
	 <LinearLayout 
	     android:layout_width="match_parent"
	     android:layout_height="match_parent"
	     android:orientation="vertical">

	    <RelativeLayout 
	        android:id="@+id/rl_viewfinder"
	        android:layout_width="match_parent"
	        android:layout_height="wrap_content"
	        android:layout_gravity="center">
	        
	        <RelativeLayout 
	            android:layout_width="wrap_content"
	            android:layout_height="wrap_content"
	            >
	            
	            <ImageButton
		            android:id="@+id/btn_cancel_scan"
		            android:layout_width="wrap_content"
		            android:layout_height="wrap_content"
		            android:layout_alignParentLeft="true"
		            android:layout_alignParentTop="true"
		            android:src="@drawable/scan_cancel_normal" />
		        
		        <Button 
		            android:id="@+id/btn_call_result"
		            android:layout_width="wrap_content"
		            android:layout_height="wrap_content"
		            android:layout_centerInParent="true"
		            android:text="返回结果集"
		            android:textSize="23sp"/>
		
		        <ImageButton
		            android:id="@+id/btn_flashlight"
		            android:layout_width="wrap_content"
		            android:layout_height="wrap_content"
		            android:layout_alignParentRight="true"
		            android:layout_alignParentTop="true"
		            android:src="@drawable/scan_flashlight_off" />
	        </RelativeLayout>
		
		        <com.ai.ipu.scan.view.ViewfinderView
			        android:id="@+id/viewfinder_view"
			        android:layout_width="wrap_content"
			        android:layout_height="wrap_content"
			        />
		    </RelativeLayout>
		    
	    <RelativeLayout 
	        android:layout_width="match_parent"
	        android:layout_height="0dp"
	        android:layout_weight="1">
	              
	      <ListView 
		   	    android:id="@+id/list_scan_result"
		   	    android:layout_width="match_parent"
		   	    android:background="@android:color/white"
		   	    android:layout_height="match_parent">
		   	</ListView>
	        
	    </RelativeLayout>
	  
		   	
	 </LinearLayout>

</RelativeLayout>