uses-feature之android:required

本文详细解释了在Android开发中如何使用android:required属性来指定应用是否需要特定特性。当设置为true时,表明缺少该特性设备将无法运行此应用;而设置为false则意味着应用虽然偏好这些特性但即使没有也能正常工作。

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android:required
Boolean value that indicates whether the application requires the feature specified in android:name.
  • When you declare android:required="true" for a feature, you are specifying that the application cannot function, or is not designed to function, when the specified feature is not present on the device.
  • When you declare android:required="false" for a feature, it means that the application prefers to use the feature if present on the device, but that it is designed to function without the specified feature, if necessary.

The default value for android:required if not declared is "true".

<?xml version="1.0" encoding="utf-8" standalone="no"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" android:installLocation="preferExternal" package="com.dw.Dating.lua" platformBuildVersionCode="25" platformBuildVersionName="7.1.1"> <supports-screens android:anyDensity="true" android:largeScreens="true" android:normalScreens="true" android:smallScreens="true" android:xlargeScreens="true"/> <uses-feature android:glEsVersion="0x20000"/> A <uses-permission android:name="android.permission.INTERNET"/> <uses-feature android:name="android.hardware.touchscreen" android:required="false"/> <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false"/> <uses-feature android:name="android.hardware.touchscreen.multitouch.distinct" android:required="false"/> <uses-permission android:name="android.permission.WAKE_LOCK"/> <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/> <uses-permission android:name="android.permission.READ_LOGS"/> <uses-permission android:name="android.permission.INTERNET"/> <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/> <uses-permission android:name="android.permission.INTERACT_ACROSS_USERS_FULL"/> <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/> <uses-permission android:name="android.webkit.permission.PLUGIN"/> <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT"/> <uses-permission android:name="android.permission.VIBRATE"/> <meta-data android:name="android.support.VERSION" android:value="25.3.1"/> <application android:hardwareAccelerated="false" android:icon="@drawable/app_icon" android:isGame="true" android:label="@string/app_name" android:name="com.dw.Dating.wxapi.App"> <meta-data android:name="URL_VALUE" android:value="http://192.168.111.88"/> <meta-data android:name="CHANNEL" android:value="AgentID-0"/> <meta-data android:name="FW_VALUE" android:value="FW-30855784"/> <meta-data android:name="AppID" android:value="wx401c37330dd3e92e"/> <activity android:configChanges="locale|fontScale|keyboard|keyboardHidden|mcc|mnc|navigation|orientation|screenLayout|screenSize|smallestScreenSize|touchscreen|uiMode" android:label="@string/app_name" android:launchMode="singleTask" android:name="com.dw.Dating.wxapi.MainActivity" android:screenOrientation="landscape"> <intent-filter> <action android:name="android.intent.action.MAIN"/> <category android:name="android.intent.category.LAUNCHER"/> <category android:name="android.intent.category.LEANBACK_LAUNCHER"/> </intent-filter> <meta-data android:name="unityplayer.UnityActivity" android:value="true"/> <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="false"/> </activity> <activity android:configChanges="keyboardHidden|orientation|screenSize" android:launchMode="singleTask" android:name="com.fanwei.jubaosdk.cashier.CashierActivity" android:theme="@style/FanweiDialogActivityTheme"/> <activity android:configChanges="keyboardHidden|orientation|screenSize" android:launchMode="singleTop" android:name="com.fanwei.jubaosdk.wap.WapActivity" android:screenOrientation="portrait" android:theme="@style/FanweiActivityTheme"/> <provider android:authorities="com.dw.Dating.lua.fileProvider" android:exported="false" android:grantUriPermissions="true" android:name="android.support.v4.content.FileProvider"> <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/file_paths_fanwei"/> </provider> <activity android:name="com.pay.sdk.usage.PayActivity" android:screenOrientation="portrait"/> <activity android:name="sdk.pay.PayWebViewActivity" android:screenOrientation="portrait"/> <activity android:name="com.switfpass.pay.activity.QQWapPayWebView" android:screenOrientation="portrait" android:theme="@android:style/Theme.Translucent.NoTitleBar"/> <activity android:exported="true" android:launchMode="singleTop" android:name="com.dw.Dating.lua.wxapi.WXEntryActivity" android:theme="@android:style/Theme.NoDisplay"/> <meta-data android:name="UMENG_APPKEY" android:value="111"/> <meta-data android:name="UMENG_CHANNEL" android:value="Test"/> </application> </manifest> 根据这个数据生成完整的AndroidManifest.xml
最新发布
07-19
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