flutter 插件无法正常运行

Question

新建flutter 项目helloworld，并且新增插件，新的插件在插件生成的example中可以正常运行，但是我把example/lib/main.dart 移动到项目下的lib中就报错Unhandled Exception: MissingPluginException(No implementation found for method getPlatformVersion on channel live4

当我把example/lib/main.dart移到helloworld/lib/main.dart中报错，如图
已经修改插件路径

通过debug，可以发现程序已经进入插件目录的lib/live4.dart


补充
我在example下GeneratedPluginRegistrant找到注册新插件的地方，

@Keep
public final class GeneratedPluginRegistrant {
  public static void registerWith(@NonNull FlutterEngine flutterEngine) {
    flutterEngine.getPlugins().add(new com.example.live4.Live4Plugin());
  }
}

但是在项目中怎样注册呢

@Keep
public final class GeneratedPluginRegistrant {
  public static void registerWith(@NonNull FlutterEngine flutterEngine) {
    flutterEngine.getPlugins().add(new io.flutter.plugins.sharedpreferences.SharedPreferencesPlugin());
    flutterEngine.getPlugins().add(new io.flutter.plugins.urllauncher.UrlLauncherPlugin());
    flutterEngine.getPlugins().add(new io.flutter.plugins.videoplayer.VideoPlayerPlugin());
    flutterEngine.getPlugins().add(new creativemaybeno.wakelock.WakelockPlugin());
    flutterEngine.getPlugins().add(new io.flutter.plugins.webviewflutter.WebViewFlutterPlugin());
//    flutterEngine.getPlugins().add(new com.example.helloworld.HelloworldPlugin());
//    flutterEngine.getPlugins().add(new com.example.live4.Live3Plugin());
  }
}

谢谢帮助

Answer 1

该方法是通过methodChannel方式调用的，实现代码应该在端代码里，也就是getPlatformVersion方法在android和ios目录里，你找一下。