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How can I handle exception throwing in bg task after Kotlin coroutine is canceled? For now, this leads to app crash. 
<https://stackoverflow.com/questions/45326818/cant-catch-exception-throwing-after-kotlin-coroutine-is-cancelled>

IIRC, you can apply an exception handler, which will get called instead of exploding to the surface

Thank, I’m trying to add handler to `run` or `launch`, still have a crash. 
```
run(CommonPool + CoroutineExceptionHandler({ _, e -&gt;
               Log.e("TAG", "CoroutineExceptionHandler", e)
            }))
```

You should define the exception handler this way:
```
object ExceptionHandler :
            AbstractCoroutineContextElement(CoroutineExceptionHandler),
            CoroutineExceptionHandler {
        override fun handleException(context: CoroutineContext, exception: Throwable) {
            Log.e(exception)
        }
    }
```

Then use it like:
```
launch(UI + ExceptionHandler) {
 ...
}
```

oops, sorry my code works both for `run` and `launch`, didn’t put it initially in the right function. So problem solved, thanks!