Android-选项卡和移动兼容代码(支持的屏幕

我有一个android web应用程序。。我试图添加一些代码,使其与标签兼容,但现在它与手机不兼容

<supports-screens
    android:anyDensity="true"
    android:largeScreens="true"
    android:normalScreens="true"
    android:smallScreens="true" />


<compatible-screens>
    <!--no small size screens -->


    <!--all normal size screens -->
    <screen android:screenSize="normal" android:screenDensity="ldpi" />
    <screen android:screenSize="normal" android:screenDensity="mdpi" />
    <screen android:screenSize="normal" android:screenDensity="hdpi" />
    <screen android:screenSize="normal" android:screenDensity="xhdpi" />

    <!-- all large size screens -->
    <screen android:screenSize="large" android:screenDensity="ldpi" />
    <screen android:screenSize="large" android:screenDensity="mdpi" />
    <screen android:screenSize="large" android:screenDensity="hdpi" />
    <screen android:screenSize="large" android:screenDensity="xhdpi" />

    <!-- all xlarge size screens -->
    <screen android:screenSize="xlarge" android:screenDensity="ldpi" />
    <screen android:screenSize="xlarge" android:screenDensity="mdpi" />
    <screen android:screenSize="xlarge" android:screenDensity="hdpi" />
    <screen android:screenSize="xlarge" android:screenDensity="xhdpi" />

    <!-- Special case for Nexus 7 -->
    <screen android:screenSize="large" android:screenDensity="213" />

</compatible-screens>

<screen android:screenSize="normal" android:screenDensity="480" />
<screen android:screenSize="large" android:screenDensity="480" />
<screen android:screenSize="xlarge" android:screenDensity="480" />

我应该保留哪个代码,删除哪个代码