无法将PluginRegistry转换为FlutterEngine [英] PluginRegistry cannot be converted to FlutterEngine

问题描述

将Flutter更新至1.12.13版后，我发现了此问题，无法解决.我按照发送的firebase_messaging教程进行操作时收到以下错误: 错误:类型不兼容:PluginRegistry无法转换为FlutterEngine GeneratedPluginRegistrant.registerWith(注册表)； " 我的代码如下:

As soon as I updated the flutter to version 1.12.13 I found this issue and can't fix it. I did as the firebase_messaging tutorial sent and got the following error: "error: incompatible types: PluginRegistry cannot be converted to FlutterEngine GeneratedPluginRegistrant.registerWith (registry); " My code is as follows:

package io.flutter.plugins;

import io.flutter.app.FlutterApplication;
import io.flutter.plugin.common.PluginRegistry;
import io.flutter.plugin.common.PluginRegistry.PluginRegistrantCallback;
import io.flutter.plugins.GeneratedPluginRegistrant;
import io.flutter.plugins.firebasemessaging.FlutterFirebaseMessagingService;

import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.os.Build;

public class Application extends FlutterApplication implements PluginRegistrantCallback {
  @Override
  public void onCreate() {
    super.onCreate();
    FlutterFirebaseMessagingService.setPluginRegistrant(this);

    if(Build.VERSION.SDK_INT >= Build.VERSION_CODES.O){
      NotificationChannel channel = new NotificationChannel("messages","Messages", NotificationManager.IMPORTANCE_LOW);
  NotificationManager manager = getSystemService(NotificationManager.class);
  manager.createNotificationChannel(channel);
    }
  }

  @Override
  public void registerWith(PluginRegistry registry) {
    GeneratedPluginRegistrant.registerWith(registry);
  }
}

推荐答案

替换此代码行:

GeneratedPluginRegistrant.registerWith(registry);

与此:

FirebaseMessagingPlugin.registerWith(registry.registrarFor("io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin"));

请确保导入:

import io.flutter.plugins.firebasemessaging.FirebaseMessagingPlugin;

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