android error: java.lang.NullPointerException

Question

i get user reports that the app crash in the online console i find several crash logs like

java.lang.RuntimeException: Unable to start service
com.chris.mydays.UpdateWidgets@428eb2d8 with null:
java.lang.NullPointerException at
android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2555)
at android.app.ActivityThread.access$1900(ActivityThread.java:139) at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1328)
at android.os.Handler.dispatchMessage(Handler.java:99) at
android.os.Looper.loop(Looper.java:137) at
android.app.ActivityThread.main(ActivityThread.java:5021) at
java.lang.reflect.Method.invokeNative(Native Method) at
java.lang.reflect.Method.invoke(Method.java:511) at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:789)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:556) at
dalvik.system.NativeStart.main(Native Method) Caused by:
java.lang.NullPointerException at
com.chris.mydays.UpdateWidgets.onStart(UpdateWidgets.java:50) at
android.app.Service.onStartCommand(Service.java:450) at
android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2538)
... 10 more

any idea whats about and i can do?

thanks chris

Something is assigned to NULL at com.chris.mydays.UpdateWidgets.onStart(UpdateWidgets.java:50) — Simon Dorociak
– Simon Dorociak, Commented Jan 23, 2014 at 21:02
It will be nice if you share your code especialy where your null pointer is thrown. — wawek
– wawek, Commented Jan 23, 2014 at 21:03
Holy crap this from the my days app that my ex girlfriend used to track all that awesome girl stuff. Golden. If the widget is updating from a server side call my guess could be that it's not getting data that you're expecting it to have — JakeWilson801
– JakeWilson801, Commented Jan 23, 2014 at 21:03
@jakeWilson801.. right its MyDays :) hope it worked for ur ex. and no, its nothing loaded from a server side — christian Muller
– christian Muller, Commented Jan 23, 2014 at 21:39

nKn · Accepted Answer · 2014-01-23 21:02:27Z

1

I think the most significant lines are these two:

com.chris.mydays.UpdateWidgets.onStart(UpdateWidgets.java:50) at android.app.Service.onStartCommand(Service.java:450) at

So I'd open your UpdateWidgets.java file and go to line 50, which should be in a Service in the onStartCommand() method.

answered Jan 23, 2014 at 21:02

nKn

13.8k9 gold badges48 silver badges63 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

christian Muller Over a year ago

49 Bundle extras; 50 if ((extras = intent.getExtras()) != null) { i even check at line 50 if its null

nKn Over a year ago

But if it's null you're first assigning and then comparing (precedence priorities). So if it's null this will throw an exception. I'd first compare and once I've checked it's not null, then assign.

sthor69 Over a year ago

Can't you check whether Intent is null? How did you get it?

nKn Over a year ago

Of course he can, that's exactly what I'm saying! But in his code he's doing two operations within a single line: a comparation and an assignation, and that's where the danger is. If the intent is null, he's assigning something that doesn't exist, that's why I recommended checking first and assigning then.

Collectives™ on Stack Overflow

android error: java.lang.NullPointerException

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related