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我试图获得具有类名称的进程的PID。这个想法是,用户将创建一个任务,选择事件,应用程序,如果应用程序将被打开或杀死,所以如果用户选择杀死,我想映射的意图ComponentName
的类名称ComponentName
在RunningAppProcessInfo
。如何获得具有类名称的PID并终止获得的进程
问题是我得到一个NullPointerException
,我真的无法弄清楚为什么,当我检查if中的classname时可能会发生 - 也许我误解了某些东西......任何想法?
注:我传递的背景下,以有机会获得ActivityManager
public static int getPid(Context ctx, Intent intent)
{
ActivityManager am = (ActivityManager)ctx.getSystemService(Context.ACTIVITY_SERVICE);
int pid = 0;
for(RunningAppProcessInfo a : am.getRunningAppProcesses())
{
//Revisar TODO
if(intent.getComponent().getClassName().equals(a.importanceReasonComponent.getClassName()))
{
pid = a.pid;
break;
}
}
return pid;
}
这里是logcat的:
D/su (6479): 10106 com.android.test.tasker executing 0 /system/bin/sh using shell /system/bin/sh : sh
D/AndroidRuntime(6446): Shutting down VM
W/dalvikvm(6446): threadid=1: thread exiting with uncaught exception (group=0x40015560)
E/AndroidRuntime(6446): FATAL EXCEPTION: main
E/AndroidRuntime(6446): java.lang.RuntimeException: Error receiving broadcast Intent { act=android.intent.action.AIRPLANE_MODE flg=0x20000000 (has extras) } in [email protected]
E/AndroidRuntime(6446): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:722)
E/AndroidRuntime(6446): at android.os.Handler.handleCallback(Handler.java:587)
E/AndroidRuntime(6446): at android.os.Handler.dispatchMessage(Handler.java:92)
E/AndroidRuntime(6446): at android.os.Looper.loop(Looper.java:130)
E/AndroidRuntime(6446): at android.app.ActivityThread.main(ActivityThread.java:3835)
E/AndroidRuntime(6446): at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(6446): at java.lang.reflect.Method.invoke(Method.java:507)
E/AndroidRuntime(6446): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:864)
E/AndroidRuntime(6446): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:622)
E/AndroidRuntime(6446): at dalvik.system.NativeStart.main(Native Method)
E/AndroidRuntime(6446): Caused by: java.lang.NullPointerException
E/AndroidRuntime(6446): at com.android.test.tasker.util.Root.getPid(Root.java:97)
E/AndroidRuntime(6446): at com.android.test.tasker.events.GenericalEvent.openKill(GenericalEvent.java:35)
E/AndroidRuntime(6446): at com.android.test.tasker.events.AirplaneEvent.onReceive(AirplaneEvent.java:24)
E/AndroidRuntime(6446): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:709)
E/AndroidRuntime(6446): ... 9 more
你为什么不调试,看看什么是空?题外话:你为什么不马上通过ActivityManager? – m0skit0 2012-03-16 13:50:38
请从logcat粘贴堆栈跟踪 – slayton 2012-03-16 13:50:49
我修复了代码,重要性原因组件为null,但在列表中没有出现所有的应用程序... – DGomez 2012-03-16 14:33:29