[很棒的通知]（9522）：无效的通知（没有有效的小图标）

Question

我试图在运行项目时向我的 flutter 项目添加通知，并向我显示此错误：

E/Android：很棒的通知：无效通知（没有有效的小图标）：Notification(pri=2 contentView=com.example.test/0x1090085 vibrate=null sound=content://settings/system/notification_sound tick defaults=0x0 flags =0x11 颜色=0xff000000 vis=私人）（通知线程：58）

主屏幕.dart

import 'package:flutter/material.dart';
import 'package:test/page/notification_service.dart';

class MainScreen extends StatefulWidget {
  const MainScreen({Key? key}) : super(key:key);

  @override
  _MainScreenState createState() => _MainScreenState();
}

class _MainScreenState extends State<MainScreen> {
  @override
  void initState(){
    // TODO: implement initState
    super.initState();
    NotificationService().requestPermission();
  }
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
      child: Column(
        mainAxisAlignment: MainAxisAlignment.center,
        crossAxisAlignment: CrossAxisAlignment.center,
        children: [
          GestureDetector(
        
        onTap: (){
          NotificationService().showNotification(
          1,
          'main_channel',
          'Test title',
          'Test body',
          );
        },
        child: Container(
          height: 30,
          width: 70,
          color: Colors.blue,
          child: Text(
            "SHOW NOTIFICATION"
          ),
        ),
      ) ,
        GestureDetector(
              onTap: () {
                NotificationService().showScheduledNotification(
                  1,
                  'main_channel',
                  'Test title',
                  'Test body',
                  5,
                );
              },
                 child: Container(
                height: 30,
                width: 70,
                color: Colors.red,
                child: Text(
                    "SHOW NOTIFICATION2"
                ),
              ),
        ),
        ],
      ),
      ),
    );
  }
}

notification_service.dart

import 'package:awesome_notifications/awesome_notifications.dart';

class NotificationService{
  static final NotificationService _notificationService = NotificationService._internal();
  
  factory NotificationService(){
    return _notificationService;
  }
  NotificationService._internal();

Future<void> initAwesomeNotification()async{
  AwesomeNotifications().initialize(
    'resource://drawable/ic_applogo',
    [
      NotificationChannel(
        channelKey: 'main_channel', 
        channelName: 'main_channel', 
        channelDescription: 'main_channel notifications',
        enableLights: true,
        importance: NotificationImportance.Max,
        )
    ],
  );
}
Future<void> requestPermission() async{
  AwesomeNotifications().isNotificationAllowed().then((allowed){
    if(!allowed){
      AwesomeNotifications().requestPermissionToSendNotifications();

    }
  });

}
Future<void> showNotification(int id,String channelKey,String title,String body) async{
  AwesomeNotifications().createNotification(
    content: NotificationContent(
      id: id,
      channelKey: channelKey,
      title: title,
      body: body,
    ),
  );
}

 Future<void> showScheduledNotification(int id, String channelKey, String title, String body, int interval) async {
    String localTZ = await AwesomeNotifications().getLocalTimeZoneIdentifier();

    AwesomeNotifications().createNotification(
      content: NotificationContent(
        id: id,
        channelKey: channelKey,
        title: title,
        body: body,
      ),
      schedule: NotificationInterval(
        interval: interval,
        timeZone: localTZ,
        repeats: false,
      )
    );
  }
}

Answer 1

徽标可能会导致问题，因此：

尝试将此：

 'resource://drawable/ic_applogo',

替换为以下

 null,

Answer 2

所以你可以插入另一个图标，至少在Android上我是这样做的：我删除了所有“ic_launcher.png”，因为我没有将它用作我的应用程序图标的默认图标，而恰恰是这样让资源://工作。之后，我重新安装了应用程序并设置了我想使用的另一个图标的目录，例如：resource://drawable/icon_app，然后它就工作了，我没有在lib/assets文件夹中测试它的图标，但它可能也有效。