Hi, what is the recommended way on Android to hand...

# coroutines

[ck]

Hi, what is the recommended way on Android to handle exceptions that occur inside GlobalScope.launch? A CoroutineExceptionHandler?

[gildor]

Why not just use try/catch inside of launch?

[ck]

Because I want to propagate the Exception to the calling function. i.e. ClassA calls ClassB#functionA and ClassB#functionA throws an Exception inside GlobalScope.launch which should be handled by ClassA.
Instead the App crashes because the default Thread.uncaughtExceptionHandler is used.

[Dico]

The exception cant be propagated to the caller because launch is non-blocking.

[ck]

Thanks @Dico. Is there a recommended way to solve what I am trying to do (https://kotlinlang.slack.com/archives/C1CFAFJSK/p1549885230009800?thread_ts=1549883682.009500&cid=C1CFAFJSK) or should I try a different approach?

[Dico]

I am personally confused with the exception handling stuff. I think the CEH might work though.

[gildor]

But GlobalScope.launch is asyncronous background job in global scope, you cannot just propagate any error, exactly the same you have if start new thread that throws an exception

[gildor]

If you need exception handling on call site, why do you need launch In general, do you have some example of such code?

[gildor]

But in general yes, CEH will help in this case, same way as thread.uncaughtexceptionHandlet would help in case of thread, but in general this approach looks a bit hacky and such way to handle exceptions smells, so I would consider other options, but for sure it depends on your case

[ansman]

If you want to to propagate exceptions to the caller you should use async over launch. launch is like fire and forget (though you can wait for it to complete)

[gildor]

Or even suspend function