Catch exception thrown by library in another thread (android)

Question

I am using a library that sometimes (about 1 of 100 times) throws a ConcurrentModificationException leading to an app crash.

The stacktrace does not mention any code of mine but instead the code of the library. I tried to catch the exception where I call the library however it does not work.

I guess the exception is thrown in a new thread within the library.

How could I catch such an exception?

Libary: Old Philips Hue Java library. (I am going to switch to the new one, soon.)

Exception:

E/AndroidRuntime: FATAL EXCEPTION: Thread-21319
    Process: my.package, PID: 21561
    Theme: themes:{...}
    java.util.ConcurrentModificationException
        at java.util.ArrayList$ArrayListIterator.next(ArrayList.java:573)
        at com.philips.lighting.hue.sdk.notification.impl.PHNotificationManagerImpl$3.onReceived(PHNotificationManagerImpl.java:180)
        at com.philips.lighting.hue.sdk.notification.impl.PHHueResultReceiver.execute(PHHueResultReceiver.java:24)
        at com.philips.lighting.hue.sdk.notification.impl.PHNotificationManagerImpl.notifyBridgeSearchResult(PHNotificationManagerImpl.java:188)
        at com.philips.lighting.hue.sdk.upnp.PHBridgeSearchManagerImpl$1.run(PHBridgeSearchManagerImpl.java:198)

Answer 1

I guess you modify array value while you iterating throu it.

Java Collection classes are fail-fast, which means if the Collection will be changed while some thread is traversing over it using iterator, the iterator.next() will throw ConcurrentModificationException.

Here is how to avoid it : How to avoid java.util.ConcurrentModificationException when iterating through and removing elements from an ArrayList