颤振:错误:找不到吸气剂:'挂起'。案例AppLifecycleState.suspending


9

尝试在本地iOS模拟器上启动应用程序时,我刚刚在稳定通道上升级了Flutter并获得了以下StackTrace。使用进行单元测试flutter test也会受到影响。

Launching lib/main.dart on iPhone 8 in debug mode...

Compiler message:
../../flutter/.pub-cache/hosted/pub.dartlang.org/native_device_orientation-0.1.2/lib/native_device_orientation.dart:149:30: Error: Getter not found: 'suspending'.
      case AppLifecycleState.suspending:
                             ^^^^^^^^^^
Target kernel_snapshot failed: Exception: Errors during snapshot creation: null
Failed to build bundle.
Error launching application on iPhone 8.

扑医生-v

[] Flutter (Channel stable, v1.12.13+hotfix.5, on Mac OS X 10.14.6 18G1012, locale de-DE)Flutter version 1.12.13+hotfix.5Framework revision 27321ebbad (33 hours ago), 2019-12-10 18:15:01 -0800Engine revision 2994f7e1e6Dart version 2.7.0


[] Android toolchain - develop for Android devices (Android SDK version 29.0.0-rc2)Android SDK at ...Android/sdkAndroid NDK location not configured (optional; useful for native profiling support)Platform android-29, build-tools 29.0.0-rc2Java binary at: .../bin/javaJava version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)All Android licenses accepted.

[] Xcode - develop for iOS and macOS (Xcode 11.3)Xcode at /Applications/Xcode.app/Contents/DeveloperXcode 11.3, Build version 11C29CocoaPods version 1.6.0

[] Android Studio (version 3.5)Android Studio at /Applications/Android Studio.app/ContentsFlutter plugin version 42.1.1Dart plugin version 191.8593Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b49-5587405)

[] Connected device (1 available)
    • iPhone 8 • ios • com.apple.CoreSimulator.SimRuntime.iOS-13-3 (simulator)
No issues found!

有人有解决办法吗?

Answers:


9

我遇到过同样的问题。

请查看native_device_orientation软件包的变更日志:

“进行了重大更改以支持AppLifecycleState.suspended已更改为AppLifecycleState.detached的事实。”

您的软件包之一可能取决于此库。在这里您可以找到软件包列表https://pub.dev/packages?q=dependency%3Anative_device_orientation

对我来说是qr_mobile_vision。


我没有使用您链接的任何软件包,但仍然收到此错误。有任何想法吗?
altShiftDev

没关系,找到原因并提交了新答案。
altShiftDev

5

为了使答案的范围比@ x23b5提交的答案的范围略宽,这确实是由11月4日进入Flutter 主频道的PR引起的。

公关将枚举:更新AppLifecycleState.suspendingAppLifecycleState.detached

您可能在其中一个依赖于该枚举的插件中使用了依赖项,例如其中之一(在这种情况下,您的调试错误消息将使您指向该插件),然后只需访问其github存储库,看看作者是否发布了补丁。如果没有,请随时编辑该行并为其提交PR。

另一方面,如果您已经手动编写了利用AppLifecycleState的代码(例如我的案例),请在代码中进行搜索,然后手动将挂起状态更新为分离状态并重新启动flutter。


您节省了时间,这个问题让我筋疲力尽。
Bipin Vayalu

0

有同样的问题。将qr_mobile_vision更新到版本0.3.1似乎已解决了该问题。

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