Android 颤振运行（同步文件）未完成

颤振构建/同步过程没有为我完成。它无法将文件同步到为x86构建的安卓SDK设备…

这个问题发生在每个应用程序上，并且没有连接到模拟器本身，因为即使是物理设备（Nexus 5X）也有同样的问题。 为了便于实现，仿真器是使用

flatter仿真器--create--name nexus创建的

我的主要问题是无法使用热重新加载、调试工具和其他功能。我如何进一步调查/调试

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仅控制台

• 编写和执行工作良好
• 应用程序响应迅速，控制台打印语句正常工作，带有控制台输出

颤振医生-v 飞跑 颤振运行-v

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Visual Studio代码

• 汇编似乎很好
• 应用程序没有响应且不显示（白色画布，无其他内容）

运行>开始调试 颤振：运行颤振医生 找到对应内核版本

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我没有找到同步过程没有完成的原因，但解决方案是切换到一个“较新”的颤振通道，例如

颤振通道beta

您可以使用

颤振通道

列出可用通道。

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更改频道后，不要忘记

flatter升级

。

将此项放在主函数中的

runApp（）

语句之前

WidgetsFlutterBinding.ensureInitialized();

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这为我解决了问题。

我刚刚发现使用firebaseMessaging插件可能会导致此错误。 如果您使用的是onBackgroundMessage方法，请尝试对其进行评论

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我已经评论了这一行，“将文件同步到设备”不会永远被卡住…

我目前正在使用beta频道，但仍然遇到这个问题。仅在master上对我有效。已经在使用它了。它一次又一次地发生，只是把它挂起来，似乎正在工作。如果再次出现，将放置另一条注释！谢谢+1.

Using hardware rendering with device Android SDK built for x86. If you get graphics artifacts, consider
enabling software rendering with "--enable-software-rendering".
Launching lib/main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...                                  
Running Gradle task 'assembleDebug'... Done                        11.8s
✓ Built build/app/outputs/apk/debug/app-debug.apk.
D/FlutterView( 4752): Attaching to a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@82cc314
Installing build/app/outputs/apk/app.apk...                         1.7s
D/FlutterActivity( 5134): Using the launch theme as normal theme.
D/FlutterActivityAndFragmentDelegate( 5134): Setting up FlutterEngine.
D/FlutterActivityAndFragmentDelegate( 5134): No preferred FlutterEngine was provided. Creating a new FlutterEngine for this FlutterFragment.
D/FlutterActivityAndFragmentDelegate( 5134): Attaching FlutterEngine to the Activity that owns this Fragment.
D/FlutterView( 5134): Attaching to a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@eb0c503
D/FlutterActivityAndFragmentDelegate( 5134): Executing Dart entrypoint: main, and sending initial route: /
D/FlutterView( 4752): Detaching from a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@82cc314
D/EGL_emulation( 5134): eglMakeCurrent: 0xa6196880: ver 2 0 (tinfo 0xa48618e0)
Syncing files to device Android SDK built for x86...
I/flutter ( 5134): pressed                                      
Syncing files to device Android SDK built for x86...
I/flutter ( 5134): pressed                                      
Syncing files to device Android SDK built for x86...
I/flutter ( 5134): pressed                                      
Syncing files to device Android SDK built for x86...
(This is taking an unexpectedly long time.)       ⣻

Launching lib/main.dart on Android SDK built for x86 in debug mode...
✓ Built build/app/outputs/apk/debug/app-debug.apk.
D/FlutterView( 4752): Attaching to a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@82cc314
D/FlutterActivity( 6179): Using the launch theme as normal theme.
D/FlutterActivityAndFragmentDelegate( 6179): Setting up FlutterEngine.
D/FlutterActivityAndFragmentDelegate( 6179): No preferred FlutterEngine was provided. Creating a new FlutterEngine for this FlutterFragment.
D/FlutterActivityAndFragmentDelegate( 6179): Attaching FlutterEngine to the Activity that owns this Fragment.
D/FlutterView( 6179): Attaching to a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@82cc314
D/FlutterActivityAndFragmentDelegate( 6179): Executing Dart entrypoint: main, and sending initial route: /
D/FlutterView( 4752): Detaching from a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@82cc314

[flutter] flutter doctor -v
[✓] Flutter (Channel stable, v1.12.13+hotfix.8, on Linux, locale en_US.UTF-8)
    • Flutter version 1.12.13+hotfix.8 at /home/jannik/devenv/flutter
    • Framework revision 0b8abb4724 (6 weeks ago), 2020-02-11 11:44:36 -0800
    • Engine revision e1e6ced81d
    • Dart version 2.7.0

[✓] Android toolchain - develop for Android devices (Android SDK version 28.0.3)
    • Android SDK at /home/jannik/devenv/android-sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • ANDROID_HOME = /home/jannik/devenv/android-sdk
    • ANDROID_SDK_ROOT = /home/jannik/devenv/android-sdk
    • Java binary at: /usr/bin/java
    • Java version OpenJDK Runtime Environment (build 1.8.0_232-solus-ga)
    • All Android licenses accepted.

[!] Android Studio (not installed)
    • Android Studio not found; download from https://developer.android.com/studio/index.html
      (or visit https://flutter.dev/setup/#android-setup for detailed instructions).

[✓] Connected device (1 available)
    • Android SDK built for x86 • emulator-5554 • android-x86 • Android 8.1.0 (API 27) (emulator)

Linux sol 5.5.7-150.current #1 SMP PREEMPT Wed Mar 4 03:31:00 UTC 2020 x86_64 GNU/Linux

WidgetsFlutterBinding.ensureInitialized();