Empty app crash on iOS when in background for 3 minutes #32461
Description
Steps to Reproduce
- Create new flutter app with
flutter create blank_app - Open Xcode and select developer team
- Build and run app on iPhone with
flutter run - Lock iPhone screen with power button
- Wait for 3 minutes or more
- Unlock iPhone screen
Expected: App is still active
Actual: App terminated
Logs
flutter run --verbose log after app in background
[+207406 ms] Service protocol connection closed.
[ +1 ms] Lost connection to device.
[ +2 ms] DevFS: Deleting filesystem on the device (file:///private/var/mobile/Containers/Data/Application/F593A89F-8CBD-40F0-B75C-4862EC9F4D8F/tmp/blank_appirGFzG/blank_app/)
[ ] Sending to VM service: _deleteDevFS({fsName: blank_app})
[ +257 ms] Ignored error while cleaning up DevFS: TimeoutException after 0:00:00.250000: Future not completed
[ +3 ms] "flutter run" took 228,559ms.
[ ] "flutter run" took 228,559ms.
flutter analyze output
Analyzing blank_app...
No issues found! (ran in 6.9s)
flutter doctor -v output
[✓] Flutter (Channel stable, v1.5.4-hotfix.2, on Mac OS X 10.14.3 18D42, locale en-US)
• Flutter version 1.5.4-hotfix.2 at /Users/georgewu/flutter
• Framework revision 7a4c33425d (10 days ago), 2019-04-29 11:05:24 -0700
• Engine revision 52c7a1e849
• Dart version 2.3.0 (build 2.3.0-dev.0.5 a1668566e5)
[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
• Android SDK at /Users/georgewu/Library/Android/sdk
• Android NDK location not configured (optional; useful for native profiling support)
• Platform android-28, build-tools 28.0.3
• Java binary at: /Applications/Android Studio.app/Contents/jre/jdk/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
• All Android licenses accepted.
[✓] iOS toolchain - develop for iOS devices (Xcode 10.2.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• Xcode 10.2.1, Build version 10E1001
• ios-deploy 1.9.4
• CocoaPods version 1.6.1
[✓] Android Studio (version 3.4)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin version 35.3.1
• Dart plugin version 183.6270
• Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1343-b01)
[!] IntelliJ IDEA Ultimate Edition (version 2018.2)
• IntelliJ at /Applications/IntelliJ IDEA.app
✗ Flutter plugin not installed; this adds Flutter specific functionality.
• Dart plugin version 182.3569.4
• For information about installing plugins, see
https://flutter.dev/intellij-setup/#installing-the-plugins
[!] VS Code (version 1.24.1)
• VS Code at /Applications/Visual Studio Code.app/Contents
✗ Flutter extension not installed; install from
https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter
[✓] Connected device (1 available)
• George’s iPhone 8x • d4104f2761b9550a888f1488ec17f46f1244ac36 • ios • iOS 11.3.1
! Doctor found issues in 2 categories.