flutter - Flutter - 无法设置通知大图标
问题描述
我正在使用:flutter_local_notifications:^5.0.0+3
我正在显示这样的通知,一切正常。自定义图标也可以使用。但是我正在尝试设置一个大图标,但它只是没有显示。这是没有任何大图标的通知的屏幕截图:
更新 - 它在我锁定手机时显示,并且通知显示在锁定屏幕上。但是,当它在屏幕上弹出时,它不显示。此外,当我向下滑动并查看列表中的所有通知时,它不会显示。仅在锁定屏幕上。为什么会这样?
这是我的代码:
class _MyAppState extends State<MyApp> {
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin;
FirebaseMessaging messaging = FirebaseMessaging.instance;
@override
void initState() {
notificationPermission();
initMessaging();
subscribeToTopic('test');
createChannel();
super.initState();
}
// users unique token
void getToken() async {
print(await messaging.getToken());
}
@override
Widget build(BuildContext context) {
getToken();
// showNotification();
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: Scaffold(
appBar: AppBar(title: Text('AppBar Demo')),
),
);
}
void notificationPermission() async {
NotificationSettings settings = await messaging.requestPermission(
alert: true,
announcement: false,
badge: true,
carPlay: false,
criticalAlert: false,
provisional: false,
sound: true,
);
print('User granted permission: ${settings.authorizationStatus}');
}
void initMessaging(){
// for notifications:
var androidInit = AndroidInitializationSettings('my_icon'); // make sure this is in drawable folder in android
var iosInit = IOSInitializationSettings();
var initSetting = InitializationSettings(android: androidInit, iOS: iosInit);
flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
flutterLocalNotificationsPlugin.initialize(initSetting);
// Set up listener
FirebaseMessaging.onMessage.listen((RemoteMessage message) {
print('Got a message whilst in the foreground!');
print('Message data: ${message.data}');
showNotification(message.data['title'], message.data['body']);
if (message.notification != null) {
print('Message also contained a notification title: ${message.notification.title}');
print('Message also contained a notification body: ${message.notification.body}');
}
});
}
void showNotification(String title, String body) async {
var androidDetails = AndroidNotificationDetails(
'91512',
'channelName',
'channelDescription',
importance: Importance.max,
priority: Priority.high,
visibility: NotificationVisibility.public,
ticker: 'ticker',
largeIcon: const DrawableResourceAndroidBitmap('my_icon'),
);
var iosDetails = IOSNotificationDetails();
var generalNotificationDetails = NotificationDetails(android: androidDetails, iOS: iosDetails);
await flutterLocalNotificationsPlugin.show(0, title, body, generalNotificationDetails, payload: 'Notification');
}
void subscribeToTopic(String topicName) async {
await FirebaseMessaging.instance.subscribeToTopic(topicName).whenComplete(() =>
{
print('Sucessfully subscribed to topic: $topicName')
});
}
void unsubscribeToTopic(String topicName) async {
await FirebaseMessaging.instance.unsubscribeFromTopic(topicName);
}
Future<void> createChannel() async {
// create channel:
var androidNotificationChannel = AndroidNotificationChannel(
'91512', // channel ID
'Your Channel name', // channel name
'Your Channel description', //channel description
importance: Importance.high,
);
await flutterLocalNotificationsPlugin
.resolvePlatformSpecificImplementation<
AndroidFlutterLocalNotificationsPlugin>()
?.createNotificationChannel(androidNotificationChannel);
}
}
解决方案
我认为您正在寻找AndroidNotificationDetails,举个例子:
AndroidNotificationDetails(
channel.id,
channel.name,
channel.description,
channelShowBadge: true,
icon: '@mipmap/ic_icon',
largeIcon: DrawableResourceAndroidBitmap('@mipmap/ic_largeIcon'),
),
正如您在通知解剖中看到的那样,不建议在 largeIcon 属性中设置应用程序图标:
使用 largeIcon 的正确方法是在发送通知时在通知负载中使用 image 属性:
const payload = {
notification: {
title: 'title',
body: 'description',
image: 'link-to-your-large-image',
sound : "default",
badge: "1"
},
};
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