Flutter中应用终止时点击本地通知的处理方法

应用处于终止状态时，点击通知的处理逻辑和后台状态不同——此时Flutter引擎尚未启动，需要原生端先捕获通知点击事件，再将数据传递给Flutter侧的插件回调。针对Android和iOS平台，需要分别补充配置：

Android 端配置 #

1. 修改AndroidManifest.xml
   给MainActivity添加singleTop启动模式，并配置通知点击的Intent过滤器，确保通知点击能正确路由到Activity：

   <activity
       android:name=".MainActivity"
       android:launchMode="singleTop"
       android:exported="true"
       ...>
       <intent-filter>
           <action android:name="FLUTTER_NOTIFICATION_CLICK" />
           <category android:name="android.intent.category.DEFAULT" />
       </intent-filter>
   </activity>
   

2. 在MainActivity中处理通知Intent
   重写onNewIntent方法（Kotlin示例），捕获通知点击的Intent并传递给插件：

   import com.dexterous.flutterlocalnotifications.FlutterLocalNotificationsPlugin
   import com.dexterous.flutterlocalnotifications.models.NotificationResponse
   
   override fun onNewIntent(intent: Intent) {
       super.onNewIntent(intent)
       if (intent.action == "FLUTTER_NOTIFICATION_CLICK") {
           val payload = intent.getStringExtra("payload")
           val actionId = intent.getStringExtra("actionId")
           val input = intent.getStringExtra("input")
           
           FlutterLocalNotificationsPlugin().handleNotificationResponse(
               NotificationResponse(
                   payload = payload,
                   actionId = actionId,
                   input = input
               )
           )
       }
   }
   

3. 创建通知时配置启动模式
   生成Android通知时，在AndroidNotificationDetails中指定launchMode为AndroidLaunchMode.SingleTop，避免重复创建Activity：

   final AndroidNotificationDetails androidDetails = AndroidNotificationDetails(
     'channel_id',
     'channel_name',
     launchMode: AndroidLaunchMode.SingleTop,
     // 其他配置...
   );
   

iOS 端配置 #

在AppDelegate.swift中处理应用启动时的通知参数，手动触发插件的回调：

import flutter_local_notifications

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {
    // 检查启动是否来自通知点击
    if let notificationDict = launchOptions?[.remoteNotification] as? [String: Any] {
        let payload = notificationDict["payload"] as? String
        // 构造通知响应对象并传递给插件
        let response = UNNotificationResponse(
            notification: UNNotification(
                request: UNNotificationRequest(
                    identifier: "",
                    content: UNMutableNotificationContent(),
                    trigger: nil
                ),
                date: Date()
            ),
            actionIdentifier: UNNotificationDefaultActionIdentifier,
            userText: nil
        )
        FlutterLocalNotificationsPlugin.instance.handleNotificationResponse(response)
    }
    return true
}

Flutter 端补充说明 #

你的初始化代码中已经设置了onDidReceiveNotificationResponse和behaviorSubject来接收payload，补充完原生端配置后，应用终止状态下点击通知时，原生会将payload传递给插件，触发该回调，behaviorSubject也能正常接收数据。

内容的提问来源于stack exchange，提问作者Simple Code