Return value from a CorutineExectionHandler to the calling method

user_10196165 0
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Is it possible to return value from the CoroutineExceptionHandler to the calling method?

 override suspend fun getStatus() : Model {        
return withContext<Model>(Dispatchers.IO + errorHandler) {
                //Do something and return model
                // If any other exception is thrown while multiple coroutines its passed down to errorhanlder
        }
    }


 private val errorHandler = CoroutineExceptionHandler { _, exception ->
        
    }
android-mvvm kotlin-coroutines android
1 Answers

No it's not.

This kind of handler is for general uncaught exception handling, and can be reused in many different coroutines which may expect different return values, or may not even return a value at all.

If you want to catch some exceptions and return a different value, you'll need to do it right on the spot (for instance around your withContext) with a try/catch block:

override suspend fun getStatus() : Model = try {
    withContext<Model>(Dispatchers.IO) {
        // Do something and return model
    }
} catch(e: Exception) { // use more specific exception if you can
    SomeErrorModel(...)
}
user_15408180
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