Question

我正在开发一个应用程序，它的工作是清除浏览器历史记录。作为此过程的一部分，我将用户发送到浏览器的APPLICATIONS_DETAILS_SETTINGS屏幕，以便他们按下“强制停止”按钮，该按钮将关闭当前在浏览器中打开的所有窗口。这是我用来打开浏览器包的应用程序详细信息活动的代码。

    killBrowserIntent = new Intent();
    killBrowserIntent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS"); // I have tried "android.intentaction.VIEW" here as well.
    killBrowserIntent.setData(Uri.parse("package:com.android.browser"));
    ComponentName cn = new ComponentName("com.android.settings", "com.android.settings.applications.InstalledAppDetails");
    killBrowserIntent.setComponent(cn);

这在许多设备上都很有效。但是，我正在测试的其中一个设备会导致一个力关闭，并显示以下日志：

09-23 08:21:26.231: INFO/ActivityManager(231): Starting: Intent { act=android.settings.APPLICATION_DETAILS_SETTINGS dat=package:com.android.browser cmp=com.android.settings/.applications.InstalledAppDetails } from pid 3497
09-23 08:04:23.833: INFO/ActivityManager(231): Start proc com.android.settings for activity com.android.settings/.applications.InstalledAppDetails: pid=3434 uid=1000 gids={1015, 3002, 3001, 3003, 2001, 1007, 3005}
09-23 08:04:23.843: WARN/InputManagerService(231): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@407e4ec0
09-23 08:04:23.873: INFO/ActivityManager(231): No longer want com.motorola.android.deviceinformationprovider (pid 3124): hidden #21
09-23 08:04:23.893: WARN/dalvikvm(3434): Refusing to reopen boot DEX '/system/framework/com.motorola.android.frameworks.jar'
09-23 08:04:23.903: WARN/dalvikvm(3434): Refusing to reopen boot DEX '/system/framework/com.motorola.android.ptt.common.jar'
09-23 08:04:24.083: WARN/dalvikvm(3434): threadid=1: thread exiting with uncaught exception (group=0x4001e560)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434): FATAL EXCEPTION: main
09-23 08:04:24.083: ERROR/AndroidRuntime(3434): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.settings/com.android.settings.applications.InstalledAppDetails}: java.lang.NullPointerException
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1702)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1727)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.app.ActivityThread.access$1500(ActivityThread.java:124)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:974)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.os.Handler.dispatchMessage(Handler.java:99)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.os.Looper.loop(Looper.java:130)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.app.ActivityThread.main(ActivityThread.java:3859)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at java.lang.reflect.Method.invokeNative(Native Method)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at java.lang.reflect.Method.invoke(Method.java:507)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:889)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:647)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at dalvik.system.NativeStart.main(Native Method)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434): Caused by: java.lang.NullPointerException
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at com.android.settings.applications.InstalledAppDetails.onCreate(InstalledAppDetails.java:369)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1666)
09-23 08:04:24.083: ERROR/AndroidRuntime(3434):     ... 11 more
09-23 08:04:24.083: WARN/ActivityManager(231):   Force finishing activity com.android.settings/.applications.InstalledAppDetails

为了深入挖掘它，我进入设置 - ＆gt;手动管理应用程序 - ＆gt;浏览器并注意到我这样做时触发的Intent捆绑了Extras。

这是手动启动此活动时日志中的Intent行：

09-23 08:23:59.470: INFO/ActivityManager(231): Starting: Intent { act=android.settings.APPLICATION_DETAILS_SETTINGS dat=package:com.android.browser cmp=com.android.settings/.applications.InstalledAppDetails (has extras) } from pid 3540

这是从我的应用程序启动时的意图行：

09-23 08:21:26.231: INFO/ActivityManager(231): Starting: Intent { act=android.settings.APPLICATION_DETAILS_SETTINGS dat=package:com.android.browser cmp=com.android.settings/.applications.InstalledAppDetails } from pid 3497

之前有没有人遇到这样的事情？什么是最好的方法让我弄清楚我需要捆绑什么并添加到Intent才能在这个设备上正常启动？

我找到了InstalledAppDetails活动的源代码，it can be found here但我异常中引用的行是1：onCreate之外，2：空白。

有没有办法可以监听手动打开此活动时触发的Intent，并从中解压缩其中的内容以便我知道它们是什么，从而我需要添加到我的Intent中？

Answer 1

我将移除setComponent()电话。它不应该被需要（假设文档是正确的），并且为不属于你的组件调用setComponent()很少是个好主意。单独的操作字符串应该将其路由到适当的活动。

对某些应用程序启动InstalledAppDetails会导致强制关闭

1 个答案: