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

On Thu, Apr 20, 2017 at 6:08 AM, Federico Cerminara < fedecentrico(a)gmail.com&gt; wrote: > 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.ca > <http://android.app.Instrumentation.ca>llActivityOnCreate(Instrumentati... > 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? > > So 1) I think we have this bug known already (https://issues.jboss.org/ browse/AGCORDOVA-167), sorry about that. 2) If you are feeling brave you can add the null/initialization check from here : https://github.com/aerogear/aerogear-cordova-push/blob/ b313fcfb20708089f2e0bcb871e396f67ee2b1a5/src/android/org/ jboss/aerogear/cordova/push/NotificationMessageHandler.java#L43 to here : https://github.com/aerogear/aerogear-cordova-push/blob/ b313fcfb20708089f2e0bcb871e396f67ee2b1a5/src/android/org/ jboss/aerogear/cordova/push/PushHandlerActivity.java#L60 rebuild the cordova library, test it, and send a pull request if it fixes your problem. > 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 >>>>>>> >>>>>>> >>>>>>