fix(app-start): Fix detection of foreground app start - #5880
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markushi merged 4 commits intoJul 31, 2026
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markushi
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romtsn and
runningcode
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July 30, 2026 16:52
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📲 Install BuildsAndroid
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Performance metrics 🚀
Baseline results on branch: mainStartup times
App size
Previous results on branch: markushi/fix-foreground-detectionStartup times
App size
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0xadam-brown
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Jul 30, 2026
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Nice!
Approving pending addition of the CHANGELOG entry 👍
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sentry-android-core/src/main/java/io/sentry/android/core/performance/AppStartMetrics.java
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…rmance/AppStartMetrics.java Co-authored-by: arb <adam.brown@sentry.io>
This was referenced Aug 5, 2026
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Description
Pre Android 15, AppStartMetrics.appLaunchedInForeground uses a LazyEvaluator<Boolean> that only
evaluated ContextUtils.isForegroundImportance() on the first read. Since the read can happen at a later point in time, e.g. during Activity.onCreate() the process importance might have changed by now, and we incorrectly detect foreground / background starts - causing long app starts.
This PR changes the behavior, and we now immediately evaluate the foreground flag. This will make foreground/background app starts pre Android 15 more correct, at the cost of an extra binder call via ContextUtils.isForegroundImportance().
💡 Motivation and Context
Fixes #4693 (pre Android 15)
💚 How did you test it?
Unit Tests.
📝 Checklist