newFny/app/src/main/res/layout/activity_scanner.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">


    <FrameLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <SurfaceView
            android:id="@+id/scanner_view"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_gravity="center" />

        <com.qingdaofushan.home.zxing.view.ViewfinderView
            android:id="@+id/viewfinder_content"
            android:layout_width="wrap_content"
            android:layout_height="match_parent"
            app:corner_color="@color/corner_color"
            app:frame_color="@color/viewfinder_frame"
            app:label_text="将二维码放入框中，即可自动扫描"
            app:label_text_color="#FFb2b2b2"
            app:laser_color="@color/laser_color"
            app:mask_color="@color/viewfinder_mask"
            app:result_color="@color/result_view"
            app:result_point_color="@color/result_point_color" />

        <ImageButton
            android:id="@+id/btn_flash"
            android:layout_width="40dip"
            android:layout_height="40dip"
            android:layout_gravity="bottom|center_horizontal"
            android:layout_marginBottom="30dip"
            android:background="?attr/selectableItemBackground"
            android:padding="6dip"
            android:scaleType="centerInside"
            android:src="@drawable/flash_off" />
    </FrameLayout>

</RelativeLayout>