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這是什麼意思？ 我是新來的編碼，主要是自學，但我不知道如何閱讀這個，如果錯誤是PARSE相關，我不知道如何解決它我花了很多時間傾吐PARSE的代碼（直接複製來自PARSE網站）。如何閱讀錯誤報告
java.lang.RuntimeException: Unable to start receiver com.parse.ParseBroadcastReceiver: java.lang.RuntimeException: applicationContext is null. You must call Parse.initialize(context, applicationId, clientKey) before using the Parse library.
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2675)
at android.app.ActivityThread.access$1800(ActivityThread.java:175)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1384)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:146)
at android.app.ActivityThread.main(ActivityThread.java:5602)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1283)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1099)
at dalvik.system.NativeStart.main(Native Method)
Caused by: java.lang.RuntimeException: applicationContext is null. You must call Parse.initialize(context, applicationId, clientKey) before using the Parse library.
at com.parse.Parse.checkContext(Parse.java:557)
at com.parse.Parse.getApplicationContext(Parse.java:165)
at com.parse.ManifestInfo.getContext(ManifestInfo.java:221)
at com.parse.ManifestInfo.getPackageManager(ManifestInfo.java:229)
at com.parse.ManifestInfo.getPackageInfo(ManifestInfo.java:240)
at com.parse.ManifestInfo.deviceSupportsGcm(ManifestInfo.java:325)
at com.parse.ManifestInfo.getPushType(ManifestInfo.java:109)
at com.parse.PushService.startServiceIfRequired(PushService.java:150)
at com.parse.ParseBroadcastReceiver.onReceive(ParseBroadcastReceiver.java:19)
at android.app.ActivityThread.handleReceiver(ActivityThread.java:2660)