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criticalmaps / criticalmaps-android

🤖 Critical Maps Android App
http://criticalmaps.net
Apache License 2.0
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NPE FC in TwitterFragment #92

Closed ligi closed 8 years ago

ligi commented 8 years ago 
E/AndroidRuntime(27284): Process: de.stephanlindauer.criticalmaps, PID: 27284
E/AndroidRuntime(27284): java.lang.NullPointerException: Attempt to invoke virtual method 'void android.support.v4.widget.SwipeRefreshLayout.setRefreshing(boolean)' on a null object reference
E/AndroidRuntime(27284):    at de.stephanlindauer.criticalmaps.fragments.TwitterFragment.displayNewData(TwitterFragment.java:91)
E/AndroidRuntime(27284):    at de.stephanlindauer.criticalmaps.handler.TwitterGetHandler.onPostExecute(TwitterGetHandler.java:53)
E/AndroidRuntime(27284):    at de.stephanlindauer.criticalmaps.handler.TwitterGetHandler.onPostExecute(TwitterGetHandler.java:16)
E/AndroidRuntime(27284):    at android.os.AsyncTask.finish(AsyncTask.java:636)
E/AndroidRuntime(27284):    at android.os.AsyncTask.access$500(AsyncTask.java:177)
E/AndroidRuntime(27284):    at android.os.AsyncTask$InternalHandler.handleMessage(AsyncTask.java:653)
E/AndroidRuntime(27284):    at android.os.Handler.dispatchMessage(Handler.java:102)
E/AndroidRuntime(27284):    at android.os.Looper.loop(Looper.java:145)
E/AndroidRuntime(27284):    at android.app.ActivityThread.main(ActivityThread.java:6872)
E/AndroidRuntime(27284):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(27284):    at java.lang.reflect.Method.invoke(Method.java:372)
E/AndroidRuntime(27284):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1404)
E/AndroidRuntime(27284):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1199)
cbalster commented 8 years ago

The asynctask is trying to do work on a view that's already been destroyed when it finishes. I guess this happens when you navigate more than one tab away from the twitter fragment?

ligi commented 8 years ago

I can reproduce it now kind of regularly by jumping between tabs wildly Did not yet found a step by step way to reproduce

On 16.10.2015 00:47, Christian Balster wrote:

probably the asynctask trying to do work on a view that's already been destroyed when it finishes. I guess this happens when you navigate more than one tab away from the twitter fragment?

— Reply to this email directly or view it on GitHub https://github.com/criticalmaps/criticalmaps-android/issues/92#issuecomment-148544668.

best regards, ligi http://ligi.de

cbalster commented 8 years ago

yeah, pretty sure that's it. try refreshing the twitterfeed and jump to the about tab as quickly as possible.