iOS模拟器运行Flutter应用报错：未设置iOS通知配置求助

1. 修复「iOS settings must be set」错误 #

在main.dart中初始化FlutterLocalNotificationsPlugin时，必须传入iOS平台的初始化设置，否则会触发该异常。修改初始化代码如下：

import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:flutter/material.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();

  final FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
      FlutterLocalNotificationsPlugin();

  // 配置iOS初始化参数
  const IOSInitializationSettings iosSettings = IOSInitializationSettings(
    requestAlertPermission: true,
    requestBadgePermission: true,
    requestSoundPermission: true,
  );

  // 合并多平台初始化设置
  const InitializationSettings initializationSettings = InitializationSettings(
    iOS: iosSettings,
    // 安卓平台设置按需添加
    // android: AndroidInitializationSettings('@mipmap/ic_launcher'),
  );

  // 初始化插件
  await flutterLocalNotificationsPlugin.initialize(initializationSettings);

  runApp(const YourApp());
}

2. 修复「no valid “aps-environment” entitlement string」警告 #

这个警告和推送权限配置有关，处理步骤如下：

• 用Xcode打开项目的ios/Runner.xcworkspace
• 选中左侧的Runner目标，切换到Signing & Capabilities标签页
• 点击+ Capability，搜索并添加Push Notifications能力
• 确保Signing Team已正确配置（使用有效的开发者账号）
• 若仅在模拟器运行，该警告可忽略；若需彻底消除，可在Info.plist中添加：

  <key>APS Environment</key>
  <string>development</string>
  

3. 修正AppDelegate.swift的通知代理配置 #

当前代码中UNUserNotificationCenter.current().delegate = self as? UNUserNotificationCenterDelegate存在类型转换问题，需修改AppDelegate使其遵循协议：

import UIKit
import Flutter
import flutter_downloader
import GoogleMaps
import flutter_local_notifications

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate, UNUserNotificationCenterDelegate { // 添加协议遵循
  override func application(
    _ application: UIApplication,
    didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
  ) -> Bool {
    FlutterLocalNotificationsPlugin.setPluginRegistrantCallback { (registry) in
      GeneratedPluginRegistrant.register(with: registry)
    }

    GeneratedPluginRegistrant.register(with: self)

    if #available(iOS 10.0, *) {
      UNUserNotificationCenter.current().delegate = self // 移除as?类型转换
    }
    return super.application(application, didFinishLaunchingWithOptions: launchOptions)
  }
}

完成以上修改后，重新运行项目即可解决这两个问题。

内容的提问来源于stack exchange，提问作者coolhack7