无法获取 android.permission.CLEAR_APP_USER_DATA

Question

我正在开发需要特殊权限的系统应用程序。出于某种原因，我无法获得 CLEAR_APP_USER_DATA 的许可，但我可以使用 INSTALL_PACKAGES、DELETE_PACKAGES 等。什么可能导致这种情况？

显现：

uses-permission android:name="android.permission.CLEAR_APP_USER_DATA"/>
uses-permission android:name="android.permission.CLEAR_APP_CACHE"/>
uses-permission android:name="android.permission.INSTALL_PACKAGES"/>
uses-permission android:name="android.permission.DELETE_PACKAGES"/>
uses-permission android:name="android.permission.CHANGE_CONFIGURATION"/>
uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>

我删除了“<”，因为它不会显示其余的行。

我使用权限的代码：

String apkPackage = intent.getExtras().getString(context.getString(R.string.key_package));
            if (apkPackage != null) {
                PackageManager pm = context.getPackageManager();
                Class<?>[] types = new Class[] {String.class, IPackageDataObserver.class};
                try {
                    Method methodClearUserData = pm.getClass().getMethod("clearApplicationUserData", types);
                    methodClearUserData.invoke(pm, new Object[] {apkPackage, null});
                    Method methodDeleteCache = pm.getClass().getMethod("deleteApplicationCacheFiles", types);
                    methodDeleteCache.invoke(pm, new Object[] {apkPackage, null});
                } catch (NoSuchMethodException | IllegalAccessException | IllegalArgumentException | InvocationTargetException e) {
                    Log.w(TAG, "Unable to invoke clear method.", e);
                }
            } else {
                Log.w(TAG, "Provided APK package is null.");
            }

[编辑]

07-15 14:29:32.136: W/RequestReceiver(4367): Unable to invoke clear method.
07-15 14:29:32.136: W/RequestReceiver(4367): java.lang.reflect.InvocationTargetException
07-15 14:29:32.136: W/RequestReceiver(4367):    at java.lang.reflect.Method.invokeNative(Native Method)
07-15 14:29:32.136: W/RequestReceiver(4367):    at java.lang.reflect.Method.invoke(Method.java:525)
07-15 14:29:32.136: W/RequestReceiver(4367):    at com.test.appmanager.RequestReceiver.onReceive(RequestReceiver.java:114)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.app.ActivityThread.handleReceiver(ActivityThread.java:2558)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.app.ActivityThread.access$1500(ActivityThread.java:165)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1449)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.os.Handler.dispatchMessage(Handler.java:107)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.os.Looper.loop(Looper.java:194)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.app.ActivityThread.main(ActivityThread.java:5370)
07-15 14:29:32.136: W/RequestReceiver(4367):    at java.lang.reflect.Method.invokeNative(Native Method)
07-15 14:29:32.136: W/RequestReceiver(4367):    at java.lang.reflect.Method.invoke(Method.java:525)
07-15 14:29:32.136: W/RequestReceiver(4367):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:833)
07-15 14:29:32.136: W/RequestReceiver(4367):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600)
07-15 14:29:32.136: W/RequestReceiver(4367):    at dalvik.system.NativeStart.main(Native Method)
07-15 14:29:32.136: W/RequestReceiver(4367): Caused by: java.lang.SecurityException: Neither user 10070 nor current process has android.permission.CLEAR_APP_USER_DATA.
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.os.Parcel.readException(Parcel.java:1425)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.os.Parcel.readException(Parcel.java:1379)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.content.pm.IPackageManager$Stub$Proxy.clearApplicationUserData(IPackageManager.java:2918)
07-15 14:29:32.136: W/RequestReceiver(4367):    at android.app.ApplicationPackageManager.clearApplicationUserData(ApplicationPackageManager.java:1177)
07-15 14:29:32.136: W/RequestReceiver(4367):    ... 14 more

Answer 1

错误：java.lang.SecurityException：PID 9237没有权限android.permission.CLEAR_APP_USER_DATA来清除包的数据

步骤1.启用开发者选项

步骤2.启用USB调试

非常重要的一步：

步骤3.搜索“禁用权限监控”并启用它。这将有助于解决 Android 8 及更高版本的问题。

Answer 2

该权限被标记为“不得由第三方应用程序使用”。您提到您正在构建一个“系统应用程序”，这是否意味着您正在创建一个与自定义平台映像（针对您自己的设备、自定义 ROM 等）捆绑在一起的应用程序？为了使用它，它必须是预安装在映像上的“系统”应用程序，由“系统”用户拥有并使用平台密钥签名。