Flutter运行失败

Question

我创建了一个新的 flutter 项目，它在 Android 上的计数器上工作得很好，但是当我粘贴旧代码和依赖项等东西（在 iPhone 上工作得很好）时，它停止工作并给出以下错误：

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在粘贴我的代码之前：

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Launching lib/main.dart on Android SDK built for x86 in debug mode...\nRunning Gradle task 'assembleDebug'...\n\xe2\x9c\x93 Built build/app/outputs/apk/debug/app-debug.apk.\nInstalling build/app/outputs/apk/app.apk...\nD/FlutterActivity(21443): Using the launch theme as normal theme.\nD/FlutterActivityAndFragmentDelegate(21443): Setting up FlutterEngine.\nD/FlutterActivityAndFragmentDelegate(21443): No preferred FlutterEngine was provided. Creating a new FlutterEngine for this FlutterFragment.\nD/FlutterActivityAndFragmentDelegate(21443): Attaching FlutterEngine to the Activity that owns this Fragment.\nD/FlutterView(21443): Attaching to a FlutterEngine: io.flutter.embedding.engine.FlutterEngine@18ff028\nD/FlutterActivityAndFragmentDelegate(21443): Executing Dart entrypoint: main, and sending initial route: /\nSyncing files to device Android SDK built for x86...\nD/EGL_emulation(21443): eglMakeCurrent: 0xda51a120: ver 3 0 (tinfo 0xda50f060)\nD/eglCodecCommon(21443): setVertexArrayObject: set vao to 0 (0) 1 0\nI/Choreographer(21443): Skipped 38 frames!  The application may be doing too much work on its main thread.\nD/eglCodecCommon(21443): setVertexArrayObject: set vao to 0 (0) 1 0\n

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粘贴我的代码后：

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Launching lib/main.dart on Android SDK built for x86 in debug mode...\nRunning Gradle task 'assembleDebug'...\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/camera-0.5.6+3/android/src/main/java/io/flutter/plugins/camera/CameraPlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/cloud_firestore-0.12.10/android/src/main/java/io/flutter/plugins/firebase/cloudfirestore/CloudFirestorePlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/cloud_firestore-0.12.10/android/src/main/java/io/flutter/plugins/firebase/cloudfirestore/CloudFirestorePlugin.java uses unchecked or unsafe operations.\nNote: Recompile with -Xlint:unchecked for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_analytics-5.0.6/android/src/main/java/io/flutter/plugins/firebaseanalytics/FirebaseAnalyticsPlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_core-0.4.1+5/android/src/main/java/io/flutter/plugins/firebase/core/FirebaseCorePlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_ml_vision-0.9.3+3/android/src/main/java/io/flutter/plugins/firebasemlvision/FirebaseMlVisionPlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/tflite-1.0.4/android/src/main/java/sq/flutter/tflite/TflitePlugin.java uses unchecked or unsafe operations.\nNote: Recompile with -Xlint:unchecked for details.\nNote: Some input files use or override a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\n\xe2\x9c\x93 Built build/app/outputs/apk/debug/app-debug.apk.\nInstalling build/app/outputs/apk/app.apk...\nD/FlutterActivity(21332): Using the launch theme as normal theme.\nD/FlutterActivityAndFragmentDelegate(21332): Setting up FlutterEngine.\nD/FlutterActivityAndFragmentDelegate(21332): No preferred FlutterEngine was provided. Creating a new FlutterEngine for this FlutterFragment.\nW/FlutterEngine(21332): Tried to automatically register plugins with FlutterEngine (io.flutter.embedding.engine.FlutterEngine@2811b43) but could not find and invoke the GeneratedPluginRegistrant.\nD/FlutterActivityAndFragmentDelegate(21332): Attaching FlutterEngine to the Activity that owns this Fragment.\nError connecting to the service protocol: HttpException: Connection closed before full header was received, uri = http://127.0.0.1:55432/mvn7DG4XGhA=/ws\n If you are using an emulator running Android Q Beta, consider using an emulator running API level 29 or lower.\nLearn more about the status of this issue on https://issuetracker.google.com/issues/132325318.\n

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我从中复制文件的项目在两个模拟器上都工作得很好，但是当我创建一个新项目（设置文件夹结构、干净的代码等）并复制其中的文件时，它就停止在 android 上工作。我找不到这个问题的答案。

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从视觉上看，它从 xml 启动启动屏幕，然后在实际加载应用程序欢迎屏幕之前崩溃。

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另外，firebase 错误是怎么回事，这是正常的还是我必须修复的问题？

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安装在新的模拟器上，发生了这种情况：

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Launching lib/main.dart on Android SDK built for x86 in debug mode...\nRunning Gradle task 'assembleDebug'...\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/cloud_firestore-0.12.10/android/src/main/java/io/flutter/plugins/firebase/cloudfirestore/CloudFirestorePlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/cloud_firestore-0.12.10/android/src/main/java/io/flutter/plugins/firebase/cloudfirestore/CloudFirestorePlugin.java uses unchecked or unsafe operations.\nNote: Recompile with -Xlint:unchecked for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/camera-0.5.6+3/android/src/main/java/io/flutter/plugins/camera/CameraPlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_analytics-5.0.6/android/src/main/java/io/flutter/plugins/firebaseanalytics/FirebaseAnalyticsPlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_core-0.4.1+5/android/src/main/java/io/flutter/plugins/firebase/core/FirebaseCorePlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/firebase_ml_vision-0.9.3+3/android/src/main/java/io/flutter/plugins/firebasemlvision/FirebaseMlVisionPlugin.java uses or overrides a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\nNote: /Users/mohd/Developer/flutter/.pub-cache/hosted/pub.dartlang.org/tflite-1.0.4/android/src/main/java/sq/flutter/tflite/TflitePlugin.java uses unchecked or unsafe operations.\nNote: Recompile with -Xlint:unchecked for details.\nNote: Some input files use or override a deprecated API.\nNote: Recompile with -Xlint:deprecation for details.\n\xe2\x9c\x93 Built build/app/outputs/apk/debug/app-debug.apk.\nInstalling build/app/outputs/apk/app.apk...\nD/FlutterActivity( 6892): Using the launch theme as normal theme.\nD/FlutterActivityAndFragmentDelegate( 6892): Setting up FlutterEngine.\nD/FlutterActivityAndFragmentDelegate( 6892): No preferred FlutterEngine was provided. Creating a new FlutterEngine for this FlutterFragment.\nFlutter is taking longer than expected to report its views. Still trying...\nW/FlutterEngine( 6892): Tried to automatically register plugins with FlutterEngine (io.flutter.embedding.engine.FlutterEngine@76b1d2f) but could not find and invoke the GeneratedPluginRegistrant.\nD/FlutterActivityAndFragmentDelegate( 6892): Attaching FlutterEngine to the Activity that owns this Fragment.\nD/AndroidRuntime( 6892): Shutting down VM\nE/AndroidRuntime( 6892): FATAL EXCEPTION: main\nE/AndroidRuntime( 6892): Process: world.dost.dostapp, PID: 6892\nE/AndroidRuntime( 6892): java.lang.RuntimeException: Unable to start activity ComponentInfo{world.dost.dostapp/world.dost.dostapp.MainActivity}: java.lang.UnsupportedOperationException: The new embedding does not support the old FlutterView.\nE/AndroidRuntime( 6892):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)\nE/AndroidRuntime( 6892):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)\nE/AndroidRuntime( 6892):    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)\nE/AndroidRuntime( 6892):    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)\nE/AndroidRuntime( 6892):    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)\nE/AndroidRuntime( 6892):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)\nE/AndroidRuntime( 6892):    at android.os.Handler.dispatchMessage(Handler.java:107)\nE/AndroidRuntime( 6892):    at android.os.Looper.loop(Looper.java:214)\nE/AndroidRuntime( 6892):    at android.app.ActivityThread.main(ActivityThread.java:7356)\nE/AndroidRuntime( 6892):    at java.lang.reflect.Method.invoke(Native Method)\nE/AndroidRuntime( 6892):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)\nE/AndroidRuntime( 6892):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)\nE/AndroidRuntime( 6892): Caused by: java.lang.UnsupportedOperationException: The new embedding does not support the old FlutterView.\nE/AndroidRuntime( 6892):    at io.flutter.embedding.engine.plugins.shim.ShimRegistrar.view(ShimRegistrar.java:82)\nE/AndroidRuntime( 6892):    at io.flutter.plugins.webviewflutter.WebViewFlutterPlugin.registerWith(WebViewFlutterPlugin.java:17)\nE/AndroidRuntime( 6892):    at io.flutter.plugins.GeneratedPluginRegistrant.registerWith(GeneratedPluginRegistrant.java:33)\nE/AndroidRuntime( 6892):    at world.dost.dostapp.MainActivity.configureFlutterEngine(MainActivity.kt:10)\nE/AndroidRuntime( 6892):    at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:185)\nE/AndroidRuntime( 6892):    at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:418)\nE/AndroidRuntime( 6892):    at android.app.Activity.performCreate(Activity.java:7802)\nE/AndroidRuntime( 6892):    at android.app.Activity.performCreate(Activity.java:7791)\nE/AndroidRuntime( 6892):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)\nE/AndroidRuntime( 6892):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)\nE/AndroidRuntime( 6892):    ... 11 more\nSyncing files to device Android SDK built for x86...\nI/Process ( 6892): Sending signal. PID: 6892 SIG: 9\nLost connection to device.\nCould not update files on device: HttpException: Connection closed before full header was received, uri = http://127.0.0.1:59197/upteHOWzeD8=/\n

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注意：我觉得它来自其中一个依赖项，因为当我仅将依赖项添加到项目中并获取并运行应用程序时，它因相同的错误而崩溃。所以它可能来自依赖性。

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Answer 1

我遇到了同样的问题，运行后flutter upgrade; flutter pub upgrade，错误消失了。