Question

这是我的pubspec.yaml
当我运行不带图像选择器的pub get时，它可以工作。

name: project1
description: A new Flutter application.

publish_to:
version: 1.0.0+1

environment:
  sdk:  ">=2.7.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter
  camera:
  image_picker: ^0.6.1+4


  image_cropper:
  path_provider:
  path:
  flutter_local_notifications: ^1.4.4+2
  cupertino_icons: ^0.1.3


dev_dependencies:
  flutter_test:
    sdk: flutter


flutter:

 uses-material-design: true
 assets:

但是当我将image_picker从最新版本添加到0.6.0时，它会显示相同的错误消息

插件flutter_plugin_android_lifecycle在C：\ Users \ john \ Documents \ flutter_windows_1.17.1-stable \ flutter.pub-cache \ hosted \ pub.dartlang.org \ flutter_plugin_android_lifecycle-中没有定义的主类1.0.8 \ android \ src \ main \ java \ io \ flutter \ plugins \ flutter_plugin_android_lifecycle \ FlutterAndroidLifecyclePlugin.java或C：\ Users \ john \ Documents \ flutter_windows_1.17.1-stable \ flutter.pub-cache \ hosted \ pub.dartlang .org \ flutter_plugin_android_lifecycle-1.0.8 \ android \ src \ main \ kotlin \ io \ flutter \ plugins \ flutter_plugin_android_lifecycle \ FlutterAndroidLifecyclePlugin.kt。这可能是由于插件的pubspec.yaml中的androidPackage: io.flutter.plugins.flutter_plugin_android_lifecycle或mainClass输入错误所致。如果您是此插件的作者，请修复androidPackage条目或将主类移动到上面使用的任何位置。否则，请联系此插件的作者，并考虑同时使用其他插件。

我尝试运行不带image_picker的其他项目，它们似乎运行良好。我就是无法安装image_picker。

Answer 1

我尝试在Flutter 1.17.5中导入•通道稳定。一切正常。您可以升级Flutter，然后重试吗？

Answer 2

删除 .pub-cache 个文件夹

运行 flutter pub get 命令

如果这不起作用试试

在您的 yaml 文件中添加 flutter_plugin_android_lifecycle 依赖项

删除.pub-cache文件夹

运行 flutter pub get 命令

Flutter：运行pub get

2 个答案: