android - 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 权限，但我可以使用 INSTALL_PACKAGES、DELETE_PACKAGES 等。这可能是什么原因造成的？

list :

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

更改设备中的设置，然后它就可以正常工作了。

我们启用开发者选项的方式与我们将有一个选项(USB 调试(安全设置))的方式相同，因此请打开它。

不同设备的选项可能不同。

例如:Redmi Note 5 Pro - 您可以在设置 --> 其他设置 --> 开发人员选项 --> USB 调试中找到