What are these errors in Android Logcat ? My app works fine so : why these errors?

Question

When running an Android application, I get these errors, but everything actually works fine on the device. What's that means? And how to get rid of them ?

07-20 11:09:38.119: E/AndroidRuntime(930): FATAL EXCEPTION: main
07-20 11:09:38.119: E/AndroidRuntime(930): java.lang.RuntimeException: Unable to instantiate application android.app.Application: java.lang.NullPointerException
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.LoadedApk.makeApplication(LoadedApk.java:482)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.ActivityThread.handleBindApplication(ActivityThread.java:3909)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.ActivityThread.access$1300(ActivityThread.java:122)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1184)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.os.Handler.dispatchMessage(Handler.java:99)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.os.Looper.loop(Looper.java:137)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.ActivityThread.main(ActivityThread.java:4340)
07-20 11:09:38.119: E/AndroidRuntime(930):  at java.lang.reflect.Method.invokeNative(Native Method)
07-20 11:09:38.119: E/AndroidRuntime(930):  at java.lang.reflect.Method.invoke(Method.java:511)
07-20 11:09:38.119: E/AndroidRuntime(930):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
07-20 11:09:38.119: E/AndroidRuntime(930):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
07-20 11:09:38.119: E/AndroidRuntime(930):  at dalvik.system.NativeStart.main(Native Method)
07-20 11:09:38.119: E/AndroidRuntime(930): Caused by: java.lang.NullPointerException
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:362)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.LoadedApk.getClassLoader(LoadedApk.java:305)
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.LoadedApk.makeApplication(LoadedApk.java:474)
07-20 11:09:38.119: E/AndroidRuntime(930):  ... 11 more

Yes ! That's why I'm wondering why all these errors appeared ! Maybe a timeout ?... — cleroo, Jul 20 '12 at 09:34
Can you check `line 362` where `NullPointerException` is raised in your _LoadedApk.java_? — Abhilasha, Jul 20 '12 at 09:36
+ java.lang.RuntimeException: Unable to instantiate application android.app.Application ?! Are you sure you are not just running an earlier version of the app, that worked or something? Do these errors appear every time you run the app? — billdoor, Jul 20 '12 at 09:36
It just appeared, and did not appeared before, while I changed nothing in my Activities that could throw these Exceptions! — cleroo, Jul 20 '12 at 09:40
@Abhilasha How do you check this ? Where is LoadedApk.java ? — cleroo, Jul 20 '12 at 09:40
Does anyone have the solution. I am having the same EXACT issue. — KBusc, Aug 01 '13 at 17:19

Anirudh Ramanathan · Answer 1 · 2012-07-20T10:05:48.710

1

It looks like you are using Thread.setDefaultUncaughtExceptionHandler(). You have set an application-level error handler, which is printing stacktrace to the log.

This is why your app runs on after throwing a Fatal Exception.

edited Jul 20 '12 at 10:05

answered Jul 20 '12 at 09:36

Anirudh Ramanathan

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score 1 · Answer 2 · edited May 23 '17 at 11:56

I'm not sure what you are asking here. Your app is not working fine, your app throws a nullpointerexception. This is NOT fine.

Take a look at this line.

Caused by: java.lang.NullPointerException
07-20 11:09:38.119: E/AndroidRuntime(930):  at android.app.LoadedApk.initializeJavaContextClassLoader(LoadedApk.java:362)

Now I'm assuming your own classes/files are not named like this, and if you check for that initializeJavaContextClassLoader you find a lot of things. It looks like this is more of a "settings" or emulator thing then a code thing.

There are some other questions (you could call them duplicates even?) around:

THey all imply that this is something not code-specific, and it might have to do with your settings.

A clean etc is always advicable, but that doesn't seem to help with all. best you can do as far as I can see is to try and do a clean and build of your project.

The questions you mention are effectively duplicates. But the people don't seem to know the origin, and for some the app stills runs, and for others it crashes. — cleroo, Jul 20 '12 at 09:46
I uninstalled the app, then did a clean. I don'tget these errors when launching for the first time, but still get these errors when launching after. — cleroo, Jul 20 '12 at 09:53

What are these errors in Android Logcat ? My app works fine so : why these errors?

2 Answers2