App crashes when Location is toggled

[NesheR16]

Hi there,

I finished my app, powered by ionic2, and figured that every time i toggle 'Location service' button

I get the message "unfortunately [myApp] has stopped"

And adb logcat shows something that points to this plugin -

07-05 18:14:37.622 13348 13348 V Diagnostic: onReceiveLocationProviderChange
07-05 18:14:37.632 13348 13348 D AndroidRuntime: Shutting down VM
07-05 18:14:37.632 13348 13348 E AndroidRuntime: FATAL EXCEPTION: main
07-05 18:14:37.632 13348 13348 E AndroidRuntime: Process: myapp.com.myapp, PID: 13348
07-05 18:14:37.632 13348 13348 E AndroidRuntime: java.lang.RuntimeException: Unable to start receiver cordova.plugins.Diagnostic$LocationProviderChangedReceiver: java.lang.NullPointerException: Attempt to invoke virtual method 'void cordova.plugins.Diagnostic.notifyLocationStateChange()' on a null object reference
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at android.app.ActivityThread.handleReceiver(ActivityThread.java:3642)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at android.app.ActivityThread.access$2000(ActivityThread.java:222)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1877)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:102)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at android.os.Looper.loop(Looper.java:158)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:7229)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1230)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1120)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'void cordova.plugins.Diagnostic.notifyLocationStateChange()' on a null object reference
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at cordova.plugins.Diagnostic$LocationProviderChangedReceiver.onReceive(Diagnostic.java:837)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: at android.app.ActivityThread.handleReceiver(ActivityThread.java:3635)
07-05 18:14:37.632 13348 13348 E AndroidRuntime: ... 8 more
07-05 18:14:37.652 3431 3973 V BroadcastQueue: [background] Process cur broadcast BroadcastRecord{da6801c u-1 android.location.MODE_CHANGED qIdx=4}, state= (APP_RECEIVE) DELIVERED for app ProcessRecord{c965a97 25143:com.android.vending/u0a34}

[NesheR16]

A hotfix that doesn't make my app crash constantly -

into /plugins/cordova.plugins.diagnostic/src/android/Diagnostic.java:

At the end of the file - try & catch this:
instance.notifyLocationStateChange();

[dpa99c]

This bug was raised as issue #85 (based on this stackoverflow question) and fixed by commit 6f9eac8 which was pushed out to npm as v3.0.4 on 11-June-2016.

I would suggest updating the plugin to the latest version (3.1.0) to resolve this.