SecurityException异常Android中反映调用方法时 [英] SecurityException in Android when calling reflected method
问题描述
I'm开发缓存清理应用程序,当我在软件包管理系统调用隐藏方法,我得到一个SecurityException,虽然我已经给我的应用程序的使用许可权DELETE_CACHE_FILES
的用途,权限:
使用许可权的android:NAME =android.permission.DELETE_CACHE_FILES
使用许可权的android:NAME =android.permission.CLEAR_APP_CACHE
使用许可权的android:NAME =android.permission.WRITE_EXTERNAL_STORAGE
使用许可权的android:NAME =android.permission.CLEAR_APP_USER_DATA
使用许可权的android:NAME =android.permission.GET_PACKAGE_SIZE
反射的方法:
方法方法= getPackageManager()的getClass()实现getMethod(deleteApplicationCacheFiles,为String.class,IPackageDataObserver.class)。
该错误:
java.lang.reflect.InvocationTargetException
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:507)
AT< MY_PACKAGE_NAME> .MainActivity $ 1.onClick(MainActivity.java:70)
在android.view.View.performClick(View.java:2485)
在android.view.View $ PerformClick.run(View.java:9080)
在android.os.Handler.handleCallback(Handler.java:587)
在android.os.Handler.dispatchMessage(Handler.java:92)
在android.os.Looper.loop(Looper.java:123)
在android.app.ActivityThread.main(ActivityThread.java:3683)
在java.lang.reflect.Method.invokeNative(本机方法)
在java.lang.reflect.Method.invoke(Method.java:507)
在com.android.internal.os.ZygoteInit $ MethodAndArgsCaller.run(ZygoteInit.java:839)
在com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
在dalvik.system.NativeStart.main(本机方法)
java.lang.SecurityException异常:引起用户都不也不10037当前进程具有android.permission.DELETE_CACHE_FILES。
在android.os.Parcel.readException(Parcel.java:1322)
在android.os.Parcel.readException(Parcel.java:1276)
在android.content.pm.IPackageManager $存根$ Proxy.deleteApplicationCacheFiles(IPackageManager.java:2346)
在android.app.ContextImpl $ ApplicationPackageManager.deleteApplicationCacheFiles(ContextImpl.java:2562)
... 14个
70号线:
method.invoke(getPackageManager(),app.packageName,dataObserver);
它说,我不具有的权限,但我已经在我的清单decleared吧...
编辑:
我发现了这一点;
W /软件包管理系统(62):未授予权限android.permission.DELETE_CACHE_FILES包装< MY_PACKAGE_NAME> .cachecleaner(的ProtectionLevel = 3 =标志0x8be46)
EDIT2:
deleteApplicationCacheFiles宣言(通过method.toGenericString得到它()):
公共无效android.app.ContextImpl $ ApplicationPackageManager.deleteApplicationCacheFiles(java.lang.String中,android.content.pm.IPackageDataObserver)
DELETE_CACHE_FILES
是签名|系统
许可,这意味着它只能通过与该固件的签名密钥签署或安装在系统分区(例如,由植根设备的用户)的应用程序举行。普通SDK应用程序不能持有此权限。
I´m developing a Cache-Cleaner application, and when I invoke a hidden method in PackageManager I get a SecurityException, though I have given my app the uses-permission "DELETE_CACHE_FILES"
The Uses-Permissions:
uses-permission android:name="android.permission.DELETE_CACHE_FILES"
uses-permission android:name="android.permission.CLEAR_APP_CACHE"
uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"
uses-permission android:name="android.permission.CLEAR_APP_USER_DATA"
uses-permission android:name="android.permission.GET_PACKAGE_SIZE"
The reflected method:
Method method = getPackageManager().getClass().getMethod("deleteApplicationCacheFiles", String.class, IPackageDataObserver.class);
The Error:
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at <MY_PACKAGE_NAME>.MainActivity$1.onClick(MainActivity.java:70)
at android.view.View.performClick(View.java:2485)
at android.view.View$PerformClick.run(View.java:9080)
at android.os.Handler.handleCallback(Handler.java:587)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:3683)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:507)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.SecurityException: Neither user 10037 nor current process has android.permission.DELETE_CACHE_FILES.
at android.os.Parcel.readException(Parcel.java:1322)
at android.os.Parcel.readException(Parcel.java:1276)
at android.content.pm.IPackageManager$Stub$Proxy.deleteApplicationCacheFiles(IPackageManager.java:2346)
at android.app.ContextImpl$ApplicationPackageManager.deleteApplicationCacheFiles(ContextImpl.java:2562)
... 14 more
Line 70:
method.invoke(getPackageManager(), app.packageName, dataObserver);
It says that I don´t have the permission, but I have decleared it in my manifest...
EDIT: I found out this;
W/PackageManager(62): Not granting permission android.permission.DELETE_CACHE_FILES to package <MY_PACKAGE_NAME>.cachecleaner (protectionLevel=3 flags=0x8be46)
EDIT2: Declaration of deleteApplicationCacheFiles(got it via method.toGenericString()):
public void android.app.ContextImpl$ApplicationPackageManager.deleteApplicationCacheFiles(java.lang.String, android.content.pm.IPackageDataObserver)
DELETE_CACHE_FILES
is a signature|system
permission, meaning that it can only be held by apps that are signed with the firmware's signing key or are installed on the system partition (e.g., by a rooted device user). Ordinary SDK applications cannot hold this permission.
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