Update Coroutines 1.3.0-RC个
Working version:
@FlowPreview
suspend fun streamTest(): Flow<String> = channelFlow {
listener.onSomeResult { result ->
if (!isClosedForSend) {
offer(result)
}
}
awaitClose {
listener.unsubscribe()
}
}
Also checkout this Medium article by Roman Elizarov: Callbacks and Kotlin Flows
Original Question
我有一个流发出多个字符串:
@FlowPreview
suspend fun streamTest(): Flow<String> = flowViaChannel { channel ->
listener.onSomeResult { result ->
if (!channel.isClosedForSend) {
channel.sendBlocking(result)
}
}
}
一段时间后,我想取消订阅该流.目前我做以下工作:
viewModelScope.launch {
beaconService.streamTest().collect {
Timber.i("stream value $it")
if(it == "someString")
// Here the coroutine gets canceled, but streamTest is still executed
this.cancel()
}
}
If the coroutine gets canceled, the stream is still executed. There is just no subscriber listening to new values. How can I unsubscribe and stop the stream
function?