android - flutter 无法运行

Question

我已经创建了一个新的 flutter 项目，它在 android 上的计数器上工作得很好，但是当我粘贴我的旧代码和依赖项和东西时(在 iPhone 上工作得很好)它停止工作并出现这些错误:

在粘贴我的代码之前:

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

粘贴我的代码后:

Launching lib/main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:unchecked for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
✓ Built build/app/outputs/apk/debug/app-debug.apk.
Installing build/app/outputs/apk/app.apk...
D/FlutterActivity(21332): Using the launch theme as normal theme.
D/FlutterActivityAndFragmentDelegate(21332): Setting up FlutterEngine.
D/FlutterActivityAndFragmentDelegate(21332): No preferred FlutterEngine was provided. Creating a new FlutterEngine for this FlutterFragment.
W/FlutterEngine(21332): Tried to automatically register plugins with FlutterEngine (io.flutter.embedding.engine.FlutterEngine@2811b43) but could not find and invoke the GeneratedPluginRegistrant.
D/FlutterActivityAndFragmentDelegate(21332): Attaching FlutterEngine to the Activity that owns this Fragment.
Error connecting to the service protocol: HttpException: Connection closed before full header was received, uri = http://127.0.0.1:55432/mvn7DG4XGhA=/ws
🔨 If you are using an emulator running Android Q Beta, consider using an emulator running API level 29 or lower.
Learn more about the status of this issue on https://issuetracker.google.com/issues/132325318.

我从中复制文件的项目在两个模拟器上都可以正常工作，但是当我创建一个新项目(设置文件夹结构、清理代码等)并复制其中的文件时，它在 android 上停止工作。我找不到这个问题的答案。

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。

另外，Firebase 错误是怎么回事，这是正常现象还是我必须修复的问题？

安装在新的模拟器上并发生了这种情况:

Launching lib/main.dart on Android SDK built for x86 in debug mode...
Running Gradle task 'assembleDebug'...
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:unchecked for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:deprecation for details.
Note: /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.
Note: Recompile with -Xlint:unchecked for details.
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
✓ Built build/app/outputs/apk/debug/app-debug.apk.
Installing build/app/outputs/apk/app.apk...
D/FlutterActivity( 6892): Using the launch theme as normal theme.
D/FlutterActivityAndFragmentDelegate( 6892): Setting up FlutterEngine.
D/FlutterActivityAndFragmentDelegate( 6892): No preferred FlutterEngine was provided. Creating a new FlutterEngine for this FlutterFragment.
Flutter is taking longer than expected to report its views. Still trying...
W/FlutterEngine( 6892): Tried to automatically register plugins with FlutterEngine (io.flutter.embedding.engine.FlutterEngine@76b1d2f) but could not find and invoke the GeneratedPluginRegistrant.
D/FlutterActivityAndFragmentDelegate( 6892): Attaching FlutterEngine to the Activity that owns this Fragment.
D/AndroidRuntime( 6892): Shutting down VM
E/AndroidRuntime( 6892): FATAL EXCEPTION: main
E/AndroidRuntime( 6892): Process: world.dost.dostapp, PID: 6892
E/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.
E/AndroidRuntime( 6892):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3270)
E/AndroidRuntime( 6892):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3409)
E/AndroidRuntime( 6892):    at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:83)
E/AndroidRuntime( 6892):    at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:135)
E/AndroidRuntime( 6892):    at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:95)
E/AndroidRuntime( 6892):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2016)
E/AndroidRuntime( 6892):    at android.os.Handler.dispatchMessage(Handler.java:107)
E/AndroidRuntime( 6892):    at android.os.Looper.loop(Looper.java:214)
E/AndroidRuntime( 6892):    at android.app.ActivityThread.main(ActivityThread.java:7356)
E/AndroidRuntime( 6892):    at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime( 6892):    at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:492)
E/AndroidRuntime( 6892):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:930)
E/AndroidRuntime( 6892): Caused by: java.lang.UnsupportedOperationException: The new embedding does not support the old FlutterView.
E/AndroidRuntime( 6892):    at io.flutter.embedding.engine.plugins.shim.ShimRegistrar.view(ShimRegistrar.java:82)
E/AndroidRuntime( 6892):    at io.flutter.plugins.webviewflutter.WebViewFlutterPlugin.registerWith(WebViewFlutterPlugin.java:17)
E/AndroidRuntime( 6892):    at io.flutter.plugins.GeneratedPluginRegistrant.registerWith(GeneratedPluginRegistrant.java:33)
E/AndroidRuntime( 6892):    at world.dost.dostapp.MainActivity.configureFlutterEngine(MainActivity.kt:10)
E/AndroidRuntime( 6892):    at io.flutter.embedding.android.FlutterActivityAndFragmentDelegate.onAttach(FlutterActivityAndFragmentDelegate.java:185)
E/AndroidRuntime( 6892):    at io.flutter.embedding.android.FlutterActivity.onCreate(FlutterActivity.java:418)
E/AndroidRuntime( 6892):    at android.app.Activity.performCreate(Activity.java:7802)
E/AndroidRuntime( 6892):    at android.app.Activity.performCreate(Activity.java:7791)
E/AndroidRuntime( 6892):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1299)
E/AndroidRuntime( 6892):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3245)
E/AndroidRuntime( 6892):    ... 11 more
Syncing files to device Android SDK built for x86...
I/Process ( 6892): Sending signal. PID: 6892 SIG: 9
Lost connection to device.
Could not update files on device: HttpException: Connection closed before full header was received, uri = http://127.0.0.1:59197/upteHOWzeD8=/

注意:我觉得它来自其中一个依赖项，因为当我将依赖项添加到项目中并获取并运行应用程序时，它崩溃并出现相同的错误。所以它可能来自依赖关系。

Answer 1

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