Re: [Aerogear-users] An app crash scenario after clicking on push notification

Hi Summers, first of all, i'd like to thank you for your precious suggestion. I managed to launch my app using Android Emulator and together with the logcat tool. Thanks to this new approach, i was able to take some lines from the logcat stacktrace and now i can share them in the following. *04-20 11:35:44.861 31658 31658 E AndroidRuntime: java.lang.RuntimeException: Unable to start activity ComponentInfo{org.jboss.aerogear.android.cookbook.aerodoc/org.jboss.aerogear.cordova.push.PushHandlerActivity}: java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Collection org.jboss.aerogear.android.store.Store.readAll()' on a null object reference... ... ... 04-20 11:35:44.861 31658 31658 E AndroidRuntime: Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Collection org.jboss.aerogear.android.store.Store.readAll()' on a null object reference04-20 11:35:44.861 31658 31658 E AndroidRuntime: at org.jboss.aerogear.cordova.push.PushHandlerActivity.processPushBundle(PushHandlerActivity.java:60)04-20 11:35:44.861 31658 31658 E AndroidRuntime: at org.jboss.aerogear.cordova.push.PushHandlerActivity.onCreate(PushHandlerActivity.java:45)04-20 11:35:44.861 31658 31658 E AndroidRuntime: at android.app.Activity.performCreate(Activity.java:6876)04-20 11:35:44.861 31658 31658 E AndroidRuntime: at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1135)04-20 11:35:44.861 31658 31658 E AndroidRuntime: at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3207)04-20 11:35:44.861 31658 31658 E AndroidRuntime: ... 9 more* As i wrote in the first mail, this is the app crash scenario. If I have my app closed or already open, clicking on push notification seems to behave correctly, bringing user to application first page. Instead, if I try to close all my applications after receiving one or more push notification (image notification frequency is quite low) and then I try to click on my waiting push, application crashes showing a message that sound quite like this “The program <app_name> has been interrupted” Reading the log stacktrace, it seems like there's a NPE in *PushHandlerActivity.java:60*, and more precisely when it tries to read the store content. Now, I don't know if it's the right place to face the problem, of if I should open a ticket somewhere else, or if it's an already known and solved bug, or if eventually it's some kind of problem related to a wrong configuration in my app. Before losing me in all this wondering, can you suggest me what to do? Could i try directly to change the java code in the class PushHandlerActivity? Should it have effect, also eventually to make a test locally?

Here some information about my test conditions which could be useful. OS: Android 6.0.1 Device: Samsung S6 Aerogear Plugin Version: 3.1.0 We're talking about a cross platform application developed with Ionic 1 and Angular 1. I did not try to verify if the problem is happening also on a iOS device, but i'm gonna do it immediately after writing this reply. Do you think some other info could be useful? Thanks anyway, Federico. 2017-04-19 13:37 GMT+02:00 Summers Pittman <supittma(a)redhat.com&gt;: > The easiest tool to use is logcat with the Android emulator. Logcat is > part of the Android SDK which you installed while you were setting up your > development environment (it may have been installed by another tool but it > is there). > > All you need to do is, from the command line, run logcat. Then run your > application and wait for it to crash, and you will find the stack trace > (and a bunch of other stuff), in the log. It is possible to filter the > logcat output based on the package name of the application generating logs, > but one thing at a time. > > Summers > > On Wed, Apr 19, 2017 at 4:11 AM, Federico Cerminara < > fedecentrico(a)gmail.com&gt; wrote: > >> Still not able to introduce a tool to produce a stacktrace. I know it >> would be helpful (if you have suggestions about which tool/plugin/approach >> to use...) but now i am still not able to do it. I’m a beginner in >> cross platform app development, as i said before :( >> >> 2017-04-18 17:23 GMT+02:00 Summers Pittman <supittma(a)redhat.com&gt;: >> >>> >>> >>> On Tue, Apr 18, 2017 at 10:55 AM, Federico Cerminara < >>> fedecentrico(a)gmail.com&gt; wrote: >>> >>>> Hi Summers, >>>> thanks for your immediate reply. The OS on the device i am testing now >>>> is Android 6.0.1, but I don't know if it's an useful information cause I'm >>>> using Ionic 1 and Angular 1 to develop a Cross Platform App. >>>> >>>> The code is not publicly available but I can share some code pieces if >>>> you suggest me which pieces of code could help us for this analysis. >>>> >>>> It's not ax example app, I just took inspiration from the snippet of >>>> code included in Android aerogear variant and used them to complete my >>>> app.js code. >>>> >>>> How could you help me? >>>> >>> >>> Would you be able to include your stack trace from logcat when the >>> application crashes? >>> >>> I'm not as familiar with Cordova as I should be, but I should be able >>> to make heads or tails of it. >>> >>> >>>> Thanks anyway, Federico. >>>> >>>> >>>> 2017-04-18 16:33 GMT+02:00 Summers Pittman <supittma(a)redhat.com&gt;: >>>> >>>>> Frederico, >>>>> >>>>> Hi, sorry you are having trouble with UPS. If you could help us out >>>>> by answering a couple of questions that would be great. >>>>> >>>>> 1) Which OS is your applicatoin having trouble on and are you using >>>>> Cordova or native libraries? >>>>> >>>>> 2) Is your code publicly available somewhere for us to look at? >>>>> >>>>> 3) Are you using the example app or is this your own implementation? >>>>> >>>>> I know from experience that with Android one of the common problems >>>>> is that if the application has been killed by the OS then the Push >>>>> libraries have to be reinitialized before you can send metrics to the >>>>> server. If you are initializing your push libraries in an Activity class >>>>> instead of the Application class this may be something to double check. Of >>>>> course if this is iOS or Cordova then everything I just said is nonsense :) >>>>> >>>>> Summers >>>>> >>>>> On Tue, Apr 18, 2017 at 10:18 AM, Federico Cerminara < >>>>> fedecentrico(a)gmail.com&gt; wrote: >>>>> >>>>>> Hi, >>>>>> my name is Federico Cerminara, 35 years old, engineer and web >>>>>> developer in Rome. >>>>>> I’m a beginner in cross platform app development and I’ve started >>>>>> using aerogear cordova push plugin to enable reception of push >>>>>> notification. >>>>>> >>>>>> I’ve developed my first app. I’m able to receive correctly push >>>>>> notification, both sending them directly by aerogear admin panel after >>>>>> choosing a variant and and sending them from the application backend >>>>>> following a custom logic. If I have my app closed or already open, clicking >>>>>> on push notification seems to behave correctly, bringing user to >>>>>> application first page. Instead, if I try to close all my applications >>>>>> after receiving one or more push notification (image notification frequency >>>>>> is quite low) and then I try to click on my waiting push, application >>>>>> crashes showing a message that sound quite like this “The program >>>>>> <app_name> has been interrupted” >>>>>> >>>>>> Can you tell me a way to solve this problem? >>>>>> Thanks anyway, Federico. >>>>>> >>>>>> _______________________________________________ >>>>>> Aerogear-users mailing list >>>>>> Aerogear-users(a)lists.jboss.org >>>>>> https://lists.jboss.org/mailman/listinfo/aerogear-users >>>>>> >>>>>> >>>>> >>>>> _______________________________________________ >>>>> Aerogear-users mailing list >>>>> Aerogear-users(a)lists.jboss.org >>>>> https://lists.jboss.org/mailman/listinfo/aerogear-users >>>>> >>>>> >>>> >>>> >>>> -- >>>> Puoi trovarmi qui, se vuoi: >>>> facebook <http://www.facebook.com/fedecentrico>;, flickr >>>> <http://www.flickr.com/photos/fedecentrico>;, linkedin >>>> <http://it.linkedin.com/in/fedecentrico>;, twitter >>>> <http://twitter.com/fedecentrico>;, anobii >>>> <http://www.anobii.com/fedecentrico/books> >>>> Link consigliati: Piccoli Maestri <http://www.piccolimaestri.org>;, Il >>>> clima di Cipro <http://www.facebook.com/#%21/IlClimaDiCipro> >>>> >>>> _______________________________________________ >>>> Aerogear-users mailing list >>>> Aerogear-users(a)lists.jboss.org >>>> https://lists.jboss.org/mailman/listinfo/aerogear-users >>>> >>>> >>> >>> _______________________________________________ >>> Aerogear-users mailing list >>> Aerogear-users(a)lists.jboss.org >>> https://lists.jboss.org/mailman/listinfo/aerogear-users >>> >>> >> >> >> -- >> Puoi trovarmi qui, se vuoi: >> facebook <http://www.facebook.com/fedecentrico>;, flickr >> <http://www.flickr.com/photos/fedecentrico>;, linkedin >> <http://it.linkedin.com/in/fedecentrico>;, twitter >> <http://twitter.com/fedecentrico>;, anobii >> <http://www.anobii.com/fedecentrico/books> >> Link consigliati: Piccoli Maestri <http://www.piccolimaestri.org>;, Il >> clima di Cipro <http://www.facebook.com/#%21/IlClimaDiCipro> >> >> _______________________________________________ >> Aerogear-users mailing list >> Aerogear-users(a)lists.jboss.org >> https://lists.jboss.org/mailman/listinfo/aerogear-users >> >> > > _______________________________________________ > Aerogear-users mailing list > Aerogear-users(a)lists.jboss.org > https://lists.jboss.org/mailman/listinfo/aerogear-users > > -- Puoi trovarmi qui, se vuoi: facebook <http://www.facebook.com/fedecentrico>;, flickr <http://www.flickr.com/photos/fedecentrico>;, linkedin <http://it.linkedin.com/in/fedecentrico>;, twitter <http://twitter.com/fedecentrico>;, anobii <http://www.anobii.com/fedecentrico/books> Link consigliati: Piccoli Maestri <http://www.piccolimaestri.org>;, Il clima di Cipro <http://www.facebook.com/#%21/IlClimaDiCipro> _______________________________________________ Aerogear-users mailing list Aerogear-users(a)lists.jboss.org https://lists.jboss.org/mailman/listinfo/aerogear-users