Initialized on a new thread invoked from Application.onCreate.
registerOnTrayPreferenceChangeListener called in a separate class with a OnTrayPreferenceChangeListener parameter of this (ie. it isn't null)
Device(s)
Motorola Moto G (5) Plus (potter_n)
Android Version (E.g. Marshmallow or better API 23)
Android 7.0
Stacktrace
Stacktrace
```
java.lang.NullPointerException:
at net.grandcentrix.tray.provider.ContentProviderStorage$TrayContentObserver$1.run (ContentProviderStorage.java:104)
at android.os.Handler.handleCallback (Handler.java:751)
at android.os.Handler.dispatchMessage (Handler.java:95)
at android.os.Looper.loop (Looper.java:154)
at android.app.ActivityThread.main (ActivityThread.java:6123)
at java.lang.reflect.Method.invoke (Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:867)
at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:757)
```
Description
I'm guessing my class that implements OnTrayPreferenceChangeListener is GC'd at one point. I see that the ContentProviderStorage uses a WeakHashMap, but does some other magic stuff (cloning, etc) which perhaps breaks the rule that they key will never be null. Or there's some other problem, I really don't know :O
I have only one registerOnTrayPreferenceChangeListener call, so I can guarantee I never try to call it with null (even if I did, the registerOnTrayPreferenceChangeListener code would catch the null listener)
rzetzsche
commented
6 years ago
tray Version
0.12.0
How have you setup tray
Initialized on a new thread invoked from
Application.onCreate.registerOnTrayPreferenceChangeListenercalled in a separate class with aOnTrayPreferenceChangeListenerparameter ofthis(ie. it isn't null)Device(s)
Motorola Moto G (5) Plus (potter_n)
Android Version (E.g. Marshmallow or better API 23)
Android 7.0
Stacktrace
Stacktrace
``` java.lang.NullPointerException: at net.grandcentrix.tray.provider.ContentProviderStorage$TrayContentObserver$1.run (ContentProviderStorage.java:104) at android.os.Handler.handleCallback (Handler.java:751) at android.os.Handler.dispatchMessage (Handler.java:95) at android.os.Looper.loop (Looper.java:154) at android.app.ActivityThread.main (ActivityThread.java:6123) at java.lang.reflect.Method.invoke (Method.java) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run (ZygoteInit.java:867) at com.android.internal.os.ZygoteInit.main (ZygoteInit.java:757) ```Description
I'm guessing my class that implements
OnTrayPreferenceChangeListeneris GC'd at one point. I see that the ContentProviderStorage uses a WeakHashMap, but does some other magic stuff (cloning, etc) which perhaps breaks the rule that they key will never be null. Or there's some other problem, I really don't know :OI have only one registerOnTrayPreferenceChangeListener call, so I can guarantee I never try to call it with null (even if I did, the registerOnTrayPreferenceChangeListener code would catch the null listener)