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我正在一个 android 项目中工作,该项目用于使用密码保护 android 设备。为此,我必须以编程方式设置密码。使用参考用户设备管理 api和这个例子但它抛出错误(下):

08-18 02:12:26.888: W/dalvikvm(2600): threadid=1: thread exiting with uncaught       exception (group=0x40a401f8)
08-18 02:12:26.888: E/AndroidRuntime(2600): FATAL EXCEPTION: main
08-18 02:12:26.888: E/AndroidRuntime(2600): java.lang.RuntimeException: Unable to start activity ComponentInfo{dilli.passwordtest/dilli.passwordtest.MainActivity}: java.lang.SecurityException: No active admin ComponentInfo{dilli.passwordtest/dilli.passwordtest.MainActivity}
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1956)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.ActivityThread.access$600(ActivityThread.java:123)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.os.Handler.dispatchMessage(Handler.java:99)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.os.Looper.loop(Looper.java:137)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.ActivityThread.main(ActivityThread.java:4429)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at java.lang.reflect.Method.invokeNative(Native Method)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at java.lang.reflect.Method.invoke(Method.java:511)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at dalvik.system.NativeStart.main(Native Method)
08-18 02:12:26.888: E/AndroidRuntime(2600): Caused by: java.lang.SecurityException: No active admin ComponentInfo{dilli.passwordtest/dilli.passwordtest.MainActivity}
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.os.Parcel.readException(Parcel.java:1327)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.os.Parcel.readException(Parcel.java:1281)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.admin.IDevicePolicyManager$Stub$Proxy.setPasswordQuality(IDevicePolicyManager.java:761)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.admin.DevicePolicyManager.setPasswordQuality(DevicePolicyManager.java:292)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at dilli.passwordtest.MainActivity.onCreate(MainActivity.java:24)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.Activity.performCreate(Activity.java:4465)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049)
08-18 02:12:26.888: E/AndroidRuntime(2600):     at     android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920)
08-18 02:12:26.888: E/AndroidRuntime(2600):     ... 11 more

我对此没有明确的说明。所以,有没有朋友可以帮帮我。提前致谢。

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2 回答 2

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Caused by: java.lang.SecurityException: No active admin ComponentInfo{dilli.passwordtest/dilli.passwordtest.MainActivity}

为了修改设备管理员设置,您的应用必须被用户批准为设备管理员。您需要DeviceAdminReceiver使用适当的策略实施 a,并且用户必须进入“设置”中的安全屏幕并将您的应用程序激活为设备管理应用程序。

于 2013-08-17T20:52:04.240 回答
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SDK 提供了如何在 android 上使用 Device Administrator 的完整示例:

<SDK_PATH>/samples/android-21/legacy/ApiDemos/src/com/example/android/apis/app/DeviceAdminSample.java

该示例在其他 API 中也可用。

PS:别忘了查看清单 :)

于 2015-08-05T05:44:06.027 回答