PausingDispatcher should always dispatch when calling yield() [168777346]

Fixed

Bug

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Description

[Deleted User]

created issue #1

Sep 17, 2020 06:44PM

Component used: lifecycle-runtime-ktx
Version used: 2.2.0-alpha01 up to 2.3.0-alpha07

The following example should print "1", "2" then "3" but prints "1", "3", "2":

lifecycleScope.launchWhenResumed {
  launch {
    println("1")
    yield()
    println("3")
  }
  println("2")
}

A similar problem existed in Dispatchers.Main but was fixed: https://github.com/Kotlin/kotlinx.coroutines/issues/1474

Comments

yb...@google.com <yb...@google.com> #2Sep 21, 2020 04:16PM

Please include a sample project that reproduces your issue.

yb...@google.com <yb...@google.com> #3Sep 21, 2020 04:19PM

Sample project attached. Just add to plain project this dependencies allow to reproduce.

def emoji2_version = "1.1.0-beta01"
implementation "androidx.emoji2:emoji2:$emoji2_version"

def lifecycle_version = "2.5.0-alpha01"
implementation "androidx.lifecycle:lifecycle-process:$lifecycle_version"

ap...@google.com <ap...@google.com> #4Oct 5, 2020 05:38PM

Marked as fixed.

The reason may be related to this change, which check itself before it is initialized. Use 2.4.0 of lifecycle-process as workaround.

Issue 168777346

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Comments

yb...@google.com <yb...@google.com> #2Sep 21, 2020 04:16PM

yb...@google.com <yb...@google.com> #3Sep 21, 2020 04:19PM

ap...@google.com <ap...@google.com> #4Oct 5, 2020 05:38PM

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