Does anyone understand the syntax of this? [closed] - android-emulator

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Closed 9 years ago.
05-18 03:36:42.250: E/Trace(3525): error opening trace file: No such file or directory (2)
05-18 03:36:42.640: D/AndroidRuntime(3525): Shutting down VM
05-18 03:36:42.640: W/dalvikvm(3525): threadid=1: thread exiting with uncaught exception (group=0x40a71930)
05-18 03:36:42.732: E/AndroidRuntime(3525): FATAL EXCEPTION: main
05-18 03:36:42.732: E/AndroidRuntime(3525): java.lang.RuntimeException: Unable to instantiate application android.app.Application: java.lang.NullPointerException
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.LoadedApk.makeApplication(LoadedApk.java:504)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.ActivityThread.handleBindApplication(ActivityThread.java:4364)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.ActivityThread.access$1300(ActivityThread.java:141)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1294)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.os.Handler.dispatchMessage(Handler.java:99)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.os.Looper.loop(Looper.java:137)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.ActivityThread.main(ActivityThread.java:5041)
05-18 03:36:42.732: E/AndroidRuntime(3525): at java.lang.reflect.Method.invokeNative(Native Method)
05-18 03:36:42.732: E/AndroidRuntime(3525): at java.lang.reflect.Method.invoke(Method.java:511)
05-18 03:36:42.732: E/AndroidRuntime(3525): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
05-18 03:36:42.732: E/AndroidRuntime(3525): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
05-18 03:36:42.732: E/AndroidRuntime(3525): at dalvik.system.NativeStart.main(Native Method)
05-18 03:36:42.732: E/AndroidRuntime(3525): Caused by: java.lang.NullPointerException
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:379)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.LoadedApk.getClassLoader(LoadedApk.java:322)
05-18 03:36:42.732: E/AndroidRuntime(3525): at android.app.LoadedApk.makeApplication(LoadedApk.java:496)
05-18 03:36:42.732: E/AndroidRuntime(3525): ... 11 more
05-18 03:36:56.010: D/gralloc_goldfish(3558): Emulator without GPU emulation detected.
05-18 03:47:25.183: I/Choreographer(3558): Skipped 45 frames! The application may be doing too much work on its main thread.
05-18 03:47:39.080: D/gralloc_goldfish(3613): Emulator without GPU emulation detected.
05-18 03:47:41.770: D/dalvikvm(3613): GC_CONCURRENT freed 84K, 7% free 2781K/2988K, paused 72ms+10ms, total 196ms
05-18 03:47:41.770: D/dalvikvm(3613): WAIT_FOR_CONCURRENT_GC blocked 55ms
05-18 03:47:45.579: D/dalvikvm(3613): GC_CONCURRENT freed 100K, 7% free 3083K/3300K, paused 5ms+20ms, total 226ms
05-18 03:47:53.329: I/Choreographer(3613): Skipped 111 frames! The application may be doing too much work on its main thread.
I know this is the second time I'm posting error messages, but please bear with me as I will eventually fully understand how to decipher these logs. But could someone help me understand why my log began with errors and then began to say that my emulation started to work?

Answer 1

What you've posted is a stack trace. It's a trace of what's happened most recently, and tracing back to what happened to get you there.
You need to read this in reverse. What happens at the top (the first line of what you posted) is what happened most recently.
Think of it like this:
I feel pain in my finger.
Just before that, my finger touched a hot burner.
Just before that, my hand stopped moving.
Just before that, my hand was moving down toward the burner.
Just before that, my hand was over the stove.
Just before that, my hand was just in front of the stove.
Just before that, my hand was near the stove.
Just before that, my hand was near my body.
Just before that, my hand was by my side.

Answer 2

Your problem has nothing to do with the fact that the emulator started running, your problem is this line:
Caused by: java.lang.NullPointerException at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:379)
This means that somewhere in your code (as the error states: on line 379 if LoadedApk is you class) you are trying to access something that wasn't created first or it's creation failed and those it holds Null instead of an actual value or an Object.