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Provide Channel.invokeOnClose { ... } function
See original GitHub issueI’m currently writing an Android library that maps Bluetooth Low Energy scan callbacks to a ReceiveChannel.
I’d like to be able to detect when the channel becomes closed for receive and for send so I can stop the scan, but it didn’t find any onClose { ... } function on Channel. Is there a reason it is not present, and could it be added in the future?
Issue Analytics
- State:
- Created 5 years ago
- Reactions:11
- Comments:10 (8 by maintainers)
Top Results From Across the Web
invokeOnClose - GitHub Pages
Registers a handler which is synchronously invoked once the channel is closed or the receiving side of this channel is cancelled.
Read more >SendChannel - Javadoc.io
When the clause is selected the reference to this channel is passed into the corresponding block. void, invokeOnClose(kotlin.jvm.functions.
Read more >Kotlin Coroutines in Android — Channel - Medium
Channel could be considered to provide a stream of values between coroutines ... The function name is very readable, one coroutine could use ......
Read more >Close a Coroutine channel when consumer's Job is cancelled
Marking function as suspend doesn't make it a coroutine. Here's one way to fix this with structured concurrency: class Producer: CoroutineScope ...
Read more >Going deep on Flows & Channels — Part 3 - ProAndroidDev
This is all you need to understand how Channels work, so give ... The invokeOnClose() method is invoked automatically when the Sender closes...
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I’ve explained a workaround solution to the missing
invokeOnClosein this SO answer: https://stackoverflow.com/questions/51029737/handle-cancelation-inside-kotlin-coroutines-producer/51041980#51041980@Groostav your proposition need to consume the channel. What if we want to have an
onClosewithout consuming elements?