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我的程序运行，但我在 logcat 中得到了上面提到的 eroor 是什么原因我在这方面无法得到如此帮助。我正在提供我的堆栈跟踪。如果有人知道为什么会出现此错误，请告诉我 

10-26 06:55:55.248: W/System.err(981):  at android.app.ActivityThread.main(ActivityThread.java:3814)
10-26 06:55:55.248: W/System.err(981):  at java.lang.reflect.Method.invokeNative(Native Method)
10-26 06:55:55.248: W/System.err(981):  at java.lang.reflect.Method.invoke(Method.java:538)
10-26 06:55:55.248: W/System.err(981):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
10-26 06:55:55.248: W/System.err(981):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:659)
10-26 06:55:55.248: W/System.err(981):  at dalvik.system.NativeStart.main(Native Method)
10-26 06:55:55.248: W/System.err(981): Caused by: java.lang.NullPointerException
10-26 06:55:55.248: W/System.err(981):  at com.simsys.securex.PolicyReceiver.onReceive(PolicyReceiver.java:821)
10-26 06:55:55.248: W/System.err(981):  at android.app.ActivityThread.handleReceiver(ActivityThread.java:1888)
10-26 06:55:55.248: W/System.err(981):  ... 10 more
10-26 06:56:05.529: I/dalvikvm(981): threadid=4: reacting to signal 3
10-26 06:56:05.529: D/dalvikvm(981): SigQuit + : 0
10-26 06:56:05.533: I/dalvikvm(981): Wrote stack traces to '/data/anr/traces.txt'
10-26 06:56:05.543: E/dalvikvm(981): Unable to open stack trace file '/data/anr/jbt/jbt.981.tmp': No such file or directory
10-26 06:56:05.543: D/dalvikvm(981): SigQuit - : 0
10-26 06:59:19.745: I/dalvikvm(1043): threadid=4: reacting to signal 3
10-26 06:59:19.745: D/dalvikvm(1043): SigQuit + : 0
10-26 06:59:19.757: I/dalvikvm(1043): Wrote stack traces to '/data/anr/traces.txt'
10-26 06:59:19.765: E/dalvikvm(1043): Unable to open stack trace file '/data/anr/jbt/jbt.1043.tmp': No such file or directory
10-26 06:59:19.765: D/dalvikvm(1043): SigQuit - : 0
10-26 06:59:32.834: D/AndroidRuntime(1135): Shutting down VM
10-26 06:59:32.834: W/dalvikvm(1135): threadid=1: thread exiting with uncaught exception (group=0x4001c648)
10-26 06:59:32.838: W/System.err(1135): java.lang.RuntimeException: Unable to start receiver com.simsys.securex.PolicyReceiver: java.lang.NullPointerException
10-26 06:59:32.839: W/System.err(1135):     at android.app.ActivityThread.handleReceiver(ActivityThread.java:1899)
10-26 06:59:32.839: W/System.err(1135):     at android.app.ActivityThread.access$2400(ActivityThread.java:155)
10-26 06:59:32.839: W/System.err(1135):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1043)
10-26 06:59:32.839: W/System.err(1135):     at android.os.Handler.dispatchMessage(Handler.java:130)
10-26 06:59:32.840: W/System.err(1135):     at android.os.Looper.loop(SourceFile:351)
10-26 06:59:32.840: W/System.err(1135):     at android.app.ActivityThread.main(ActivityThread.java:3814)
10-26 06:59:32.840: W/System.err(1135):     at java.lang.reflect.Method.invokeNative(Native Method)
10-26 06:59:32.840: W/System.err(1135):     at java.lang.reflect.Method.invoke(Method.java:538)
10-26 06:59:32.840: W/System.err(1135):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:901)
10-26 06:59:32.841: W/System.err(1135):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:659)
10-26 06:59:32.841: W/System.err(1135):     at dalvik.system.NativeStart.main(Native Method)
10-26 06:59:32.841: W/System.err(1135): Caused by: java.lang.NullPointerException
10-26 06:59:32.841: W/System.err(1135):     at com.simsys.securex.PolicyReceiver.onReceive(PolicyReceiver.java:821)
10-26 06:59:32.841: W/System.err(1135):     at android.app.ActivityThread.handleReceiver(ActivityThread.java:1888)
10-26 06:59:32.842: W/System.err(1135):     ... 10 more
10-26 06:59:43.649: I/dalvikvm(1135): threadid=4: reacting to signal 3
10-26 06:59:43.649: D/dalvikvm(1135): SigQuit + : 0
10-26 06:59:43.653: I/dalvikvm(1135): Wrote stack traces to '/data/anr/traces.txt'
10-26 06:59:43.664: E/dalvikvm(1135): Unable to open stack trace file '/data/anr/jbt/jbt.1135.tmp': No such file or directory
10-26 06:59:43.664: D/dalvikvm(1135): SigQuit - : 0
10-26 07:01:01.606: I/dalvikvm(1184): threadid=4: reacting to signal 3
10-26 07:01:01.606: D/dalvikvm(1184): SigQuit + : 0
10-26 07:01:01.611: I/dalvikvm(1184): Wrote stack traces to '/data/anr/traces.txt'
10-26 07:01:01.613: E/dalvikvm(1184): Unable to open stack trace file '/data/anr/jbt/jbt.1184.tmp': No such file or directory
10-26 07:01:01.613: D/dalvikvm(1184): SigQuit - : 0
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1 回答 1

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尝试在 PolicyReceiver.java 文件的第 821 行访问一些空对象。

关于Unable to open stack trace file错误消息，它们似乎是某些 Android 系统构建的常见问题。系统尝试但未能写入一些可以帮助您调试实际错误的信息。这与您无关，因为您已经在使用 logcat 看到的日志中拥有此信息。

于 2012-10-27T02:18:13.480 回答