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我试图ChooseLockPassword从我自己的应用程序中调用活动，但发生异常。

Java 代码：

Intent intent = new Intent(Intent.ACTION_RUN);
intent.setComponent(new ComponentName("com.android.settings", "com.android.settings.ChooseLockPassword"));
startActivity(intent);

安卓清单

<!-- Lock Screen. -->
<activity android:name="ChooseLockPassword"
          android:exported="true">

<action android:name="android.intent.action.RUN" />

</activity>

例外

04-25 17:54:48.599: E/AndroidRuntime(6739): FATAL EXCEPTION: main
04-25 17:54:48.599: E/AndroidRuntime(6739): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.SystemPIN/com.test.SystemPIN.SystemPINTestActivity}: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.RUN cmp=com.android.settings/.ChooseLockPassword } from ProcessRecord{40652e98 6739:com.test.SystemPIN/10033} (pid=6739, uid=10033) requires null
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.os.Looper.loop(Looper.java:123)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.app.ActivityThread.main(ActivityThread.java:3683)

<snip>

04-25 17:54:48.599: E/AndroidRuntime(6739): Caused by: java.lang.SecurityException: Permission Denial: starting Intent { act=android.intent.action.RUN cmp=com.android.settings/.ChooseLockPassword } from ProcessRecord{40652e98 6739:com.test.SystemPIN/10033} (pid=6739, uid=10033) requires null
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.os.Parcel.readException(Parcel.java:1322)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.os.Parcel.readException(Parcel.java:1276)
04-25 17:54:48.599: E/AndroidRuntime(6739):     at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:1351)

<snip>
4

2 回答 2

0

You're getting a permission denied exception, which means you need more permissions. That the permission listed as required is null, suggests that you might not be allowed to call that activity at all.

于 2012-04-25T13:11:44.577 回答
0

我找到了解决方案并想与您分享。

如果您像我一样拥有 android 资源，您可以在位于packages\apps\settings\scr\com\android\settings\AndroidManifest.xml的设置清单文件中进行一些修改，只需修改

<activity android:name="ChooseLockPassword" android:exported="false"
            android:windowSoftInputMode="stateVisible|adjustResize"/>

行并设置 android:exported="true" 而不是 "false" 在您可以重新编译源并使用以下行调用该对话框之后

Intent intent = new Intent(Intent.ACTION_RUN);
intent.setComponent(new ComponentName("com.android.settings", "com.android.settings.ChooseLockPassword"));
startActivity(intent);
于 2012-04-25T15:15:31.317 回答