demo识别率还可以，集成到项目里边识别率就会降低，这是为啥 about nbzxing HOT 6 OPEN

<com.ailiwean.core.view.style1.MaskView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:camera_clearById="@id/scanRectView"
    app:camera_maskBgColor="#5f000000" />

<View
    android:id="@+id/scanRectView"
    android:layout_width="200dp"
    android:layout_height="200dp"
    android:layout_gravity="center" />

<com.ailiwean.core.view.style1.MaskView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    app:camera_clearById="@id/scanRectView"
    app:camera_maskBgColor="#5f000000" />

<View
    android:id="@+id/scanRectView"
    android:layout_width="200dp"
    android:layout_height="200dp"
    android:layout_gravity="center_horizontal" />