重构代码；修改mapId为-1的exam_status表，表示考试状态

endian11

2020-08-13 a927c72c0f06ef5bd771e5ae00bc35155c271762

 app/src/main/res/values/styles.xml

@@ -5,7 +5,7 @@
        <!-- Customize your theme here. -->
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
        <item name="android:windowBackground">@null</item>
        <item name="android:windowBackground">@drawable/ic_bground</item>

        <item name="android:windowContentOverlay">@null</item>
        <item name="colorPrimary">@color/colorPrimary</item>