带有本地通知和警报的 Flutter- FCM
Flutter- FCM with Local notification and alert
这是我第一次使用 Flutter 测试 FCM。我检查了 GitHub.
中的一些 SO 问题和文档
我可以发送通知，并且当应用程序未运行时它们会被发送 运行。
如果应用 运行 或在后台，则消息不可见。
我已经在 main.dart 文件中添加了代码，但不确定这是不是正确的方法。
编辑：
这是用于 onResume:
{notification: {}, data: {badge: 1, collapse_key: com.HT, google.original_priority: high, google.sent_time: 1623238, google.delivered_priority: high, sound: default, google.ttl: 2419200, from: 71374876, body: Body, title: Title, click_action: FLUTTER_NOTIFICATION_CLICK, google.message_id: 0:50a56}}
在下面的代码中，我尝试将本地通知与 FCM 结合使用。
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
new FlutterLocalNotificationsPlugin();
@override
void initState() {
var initializationSettingsAndroid =
new AndroidInitializationSettings('@mipmap/ic_launcher');
var initializationSettingsIOS = new IOSInitializationSettings();
var initializationSettings = new InitializationSettings(
android: initializationSettingsAndroid, iOS: initializationSettingsIOS);
flutterLocalNotificationsPlugin.initialize(initializationSettings,
onSelectNotification: onSelectNotification);
_firebaseMessaging.configure(
onMessage: (Map<String, dynamic> message) async {
showNotification(
message['notification']['title'], message['notification']['body']);
print("onMessage: $message");
},
onLaunch: (Map<String, dynamic> message) async {
print("onLaunch: $message");
// Navigator.pushNamed(context, '/notify');
ExtendedNavigator.of(context).push(
Routes.bookingQRScan,
);
},
onResume: (Map<String, dynamic> message) async {
print("onResume: $message");
},
);
}
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.blue,
),
debugShowCheckedModeBanner: false,
home: AnimatedSplashScreen(), //SplashScreen()
builder: ExtendedNavigator.builder<a.Router>(router: a.Router()),
);
}
Future onSelectNotification(String payload) async {
showDialog(
context: context,
builder: (_) {
return new AlertDialog(
title: Text("PayLoad"),
content: Text("Payload : $payload"),
);
},
);
}
void showNotification(String title, String body) async {
await _demoNotification(title, body);
}
Future<void> _demoNotification(String title, String body) async {
var androidPlatformChannelSpecifics = AndroidNotificationDetails(
'channel_ID', 'channel name', 'channel description',
importance: Importance.max,
playSound: false, //true,
//sound: 'sound',
showProgress: true,
priority: Priority.high,
ticker: 'test ticker');
//var iOSChannelSpecifics = IOSNotificationDetails();
var platformChannelSpecifics =
NotificationDetails(android: androidPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin
.show(0, title, body, platformChannelSpecifics, payload: 'test');
}
}
错误
This is when my app is running on foreground. E/FlutterFcmService(14434): Fatal: failed to find callback
W/FirebaseMessaging(14434): Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.
W/ConnectionTracker(14434): Exception thrown while unbinding
W/ConnectionTracker(14434): java.lang.IllegalArgumentException: Service not registered: lu@fb04880
Notification is visible in notification center. Now i am clicking on it and app get terminated.
and new instance of app is running and below is the return code. I/flutter (14434): onResume: {notification: {}, data: {badge: 1, collapse_key: com.HT, google.original_priority: high, google.sent_time: 1607733798, google.delivered_priority: high, sound: default, google.ttl: 2419200, from: 774876, body: Body, title: Title, click_action: FLUTTER_NOTIFICATION_CLICK, google.message_id: 0:1607573733816296%850a56}}
E/FlutterFcmService(14434): Fatal: failed to find callback
W/ConnectionTracker(14434): Exception thrown while unbinding
编辑 2：
我做了更多挖掘并提出了以下代码。
final FirebaseMessaging _fcm = FirebaseMessaging();
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
FlutterLocalNotificationsPlugin();
var initializationSettingsAndroid;
var initializationSettingsIOS;
var initializationSettings;
void _showNotification() async {
//await _buildNotification();
}
Future<dynamic> myBackgroundMessageHandler(Map<String, dynamic> message) {
if (message.containsKey('data')) {
// Handle data message
final dynamic data = message['data'];
}
if (message.containsKey('notification')) {
// Handle notification message
final dynamic notification = message['notification'];
}
// Or do other work.
}
Future<void> _createNotificationChannel(
String id, String name, String description) async {
final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
var androidNotificationChannel = AndroidNotificationChannel(
id,
name,
description,
importance: Importance.max,
playSound: true,
// sound: RawResourceAndroidNotificationSound('not_kiddin'),
enableVibration: true,
);
await flutterLocalNotificationsPlugin
.resolvePlatformSpecificImplementation<
AndroidFlutterLocalNotificationsPlugin>()
?.createNotificationChannel(androidNotificationChannel);
}
Future<void> _buildNotification(String title, String body) async {
var androidPlatformChannelSpecifics = AndroidNotificationDetails(
'my_channel', 'Channel Name', 'Channel Description.',
importance: Importance.max,
priority: Priority.high,
// playSound: true,
enableVibration: true,
// sound: RawResourceAndroidNotificationSound('not_kiddin'),
ticker: 'noorderlicht');
//var iOSChannelSpecifics = IOSNotificationDetails();
var platformChannelSpecifics =
NotificationDetails(android: androidPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin
.show(0, title, body, platformChannelSpecifics, payload: 'payload');
}
@override
void initState() {
super.initState();
initializationSettingsAndroid =
AndroidInitializationSettings('@mipmap/ic_launcher');
initializationSettingsIOS = IOSInitializationSettings(
onDidReceiveLocalNotification: onDidReceiveLocalNotification);
initializationSettings =
InitializationSettings(android: initializationSettingsAndroid);
// initializationSettingsAndroid, initializationSettingsIOS);
_fcm.requestNotificationPermissions();
_fcm.configure(
onMessage: (Map<String, dynamic> message) async {
print(message);
flutterLocalNotificationsPlugin.initialize(initializationSettings,
onSelectNotification: onSelectNotification);
//_showNotification();
Map.from(message).map((key, value) {
print(key);
print(value);
print(value['title']);
_buildNotification(value['title'], value['body']);
});
},
onLaunch: (Map<String, dynamic> message) async {
print("onLaunch: $message");
},
onResume: (Map<String, dynamic> message) async {
print("onResume: $message");
print(message['data']['title']);
//AlertDialog(title: message['data']['title']);
ExtendedNavigator.of(context).push(
Routes.bookingQRScan,
);
//_showNotification();
},
);
}
Future onDidReceiveLocalNotification(
int id, String title, String body, String payload) async {
// display a dialog with the notification details, tap ok to go to another page
showDialog(
context: context,
builder: (BuildContext context) => CupertinoAlertDialog(
title: Text(title),
content: Text(body),
actions: [
CupertinoDialogAction(
isDefaultAction: true,
child: Text('Ok'),
onPressed: () {},
)
],
),
);
}
Future onSelectNotification(String payload) async {
if (payload != null) {
debugPrint('Notification payload: $payload');
}
}
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.blue,
),
debugShowCheckedModeBanner: false,
home: AnimatedSplashScreen(), //SplashScreen()
builder: ExtendedNavigator.builder<a.Router>(router: a.Router()),
);
}
使用上面的代码，我可以在通知栏中看到通知，但是我想重定向的 onresume 部分不起作用。不知道为什么。
我还想在 onmeesage 和 onresume 事件中显示警告框。
您的有效载荷必须正确，有效载荷中的notification和dataobject必须包含title和body密钥。当您的应用程序在 notification 键中关闭时，您将得到 title 和 body null 在这种情况下，您应该在侧数据键中有标题和 body。
{notification: {title: title, body: test}, data: {notification_type: Welcome, body: body, badge: 1, sound: , title: farhana mam, click_action: FLUTTER_NOTIFICATION_CLICK, message: H R U, category_id: 2, product_id: 1, img_url: }}
不要输入标题和 body null
void showNotification(Map<String, dynamic> msg) async {
//{notification: {title: title, body: test}, data: {notification_type: Welcome, body: body, badge: 1, sound: , title: farhana mam, click_action: FLUTTER_NOTIFICATION_CLICK, message: H R U, category_id: 2, product_id: 1, img_url: }}
print(msg);
print(msg['data']['title']);
var title = msg['data']['title'];
var msge = msg['data']['body'];
var android = new AndroidNotificationDetails(
'channel id', 'channel NAME', 'CHANNEL DESCRIPTION',
priority: Priority.High, importance: Importance.Max);
var iOS = new IOSNotificationDetails();
var platform = new NotificationDetails(android, iOS);
await flutterLocalNotificationsPlugin.show(0, title, msge, platform,
payload: msge);
}
用于重定向
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = new FlutterLocalNotificationsPlugin();
var android = new AndroidInitializationSettings('@mipmap/ic_launcher');
var iOS = new IOSInitializationSettings();
var initSetttings = new InitializationSettings(android, iOS);
flutterLocalNotificationsPlugin.initialize(initSetttings, onSelectNotification: onSelectNotification);
firebaseCloudMessaging_Listeners();
Future onSelectNotification(String payload) async {
if (payload != null) {
debugPrint('notification payload:------ ${payload}');
await Navigator.push(
context,
new MaterialPageRoute(builder: (context) => NotificationListing()),
).then((value) {});
}
}
在'onSelectNotification'中你可以在字符串参数中传递你的条件并且你可以重定向
（可选，但推荐）如果希望在用户单击系统托盘中的通知时在您的应用中收到通知（通过 onResume 和 onLaunch，见下文），请在标签中包含以下 intent-filter你的 android/app/src/main/AndroidManifest.xml：
看看你上面的（最后编辑的）代码，我认为首先你必须确定，是使用 localnotifications 还是默认的 fcm。由于您的 myBackgroundMessageHandler 不执行任何操作，因此我假设是后者。尝试暂时用固定字符串替换标题（例如“这是本地的”）以确保。
其次，myBackgroundMessageHandler 只会为数据消息调用。如果你使用你一开始写的有效负载，你应该没问题。无论如何，请确保不要将标题、body、style-information 等直接放在负载中。需要的就放在数据节点里面。
这是我使用的代码：
calling the notificationService init() method in main.dart
notification-service.飞镖
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:app/models/data-notification.dart';
import 'dart:async';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:http/http.dart' as http;
import 'package:path_provider/path_provider.dart';
import 'dart:io';
FlutterLocalNotificationsPlugin notificationsPlugin =
FlutterLocalNotificationsPlugin();
//Function to handle Notification data in background.
Future<dynamic> backgroundMessageHandler(Map<String, dynamic> message) {
print("FCM backgroundMessageHandler $message");
showNotification(DataNotification.fromPushMessage(message['data']));
return Future<void>.value();
}
//Function to handle Notification Click.
Future<void> onSelectNotification(String payload) {
print("FCM onSelectNotification");
return Future<void>.value();
}
//Function to Parse and Show Notification when app is in foreground
Future<dynamic> onMessage(Map<String, dynamic> message) {
print("FCM onMessage $message");
showNotification(DataNotification.fromPushMessage(message['data']));
return Future<void>.value();
}
//Function to Handle notification click if app is in background
Future<dynamic> onResume(Map<String, dynamic> message) {
print("FCM onResume $message");
return Future<void>.value();
}
//Function to Handle notification click if app is not in foreground neither in background
Future<dynamic> onLaunch(Map<String, dynamic> message) {
print("FCM onLaunch $message");
return Future<void>.value();
}
void showNotification(DataNotification notification) async {
final AndroidNotificationDetails androidPlatformChannelSpecifics =
await getAndroidNotificationDetails(notification);
final NotificationDetails platformChannelSpecifics =
NotificationDetails(android: androidPlatformChannelSpecifics);
await notificationsPlugin.show(
0,
notification.title,
notification.body,
platformChannelSpecifics,
);
}
Future<AndroidNotificationDetails> getAndroidNotificationDetails(
DataNotification notification) async {
switch (notification.notificationType) {
case NotificationType.NEW_INVITATION:
case NotificationType.NEW_MEMBERSHIP:
case NotificationType.NEW_ADMIN_ROLE:
case NotificationType.MEMBERSHIP_BLOCKED:
case NotificationType.MEMBERSHIP_REMOVED:
case NotificationType.NEW_MEMBERSHIP_REQUEST:
return AndroidNotificationDetails(
'organization',
'Organization management',
'Notifications regarding your organizations and memberships.',
importance: Importance.max,
priority: Priority.high,
showWhen: false,
category: "Organization",
icon: 'my_app_icon_simple',
largeIcon: DrawableResourceAndroidBitmap('my_app_icon'),
styleInformation: await getBigPictureStyle(notification),
sound: RawResourceAndroidNotificationSound('slow_spring_board'));
case NotificationType.NONE:
default:
return AndroidNotificationDetails('general', 'General notifications',
'General notifications that are not sorted to any specific topics.',
importance: Importance.max,
priority: Priority.high,
showWhen: false,
category: "General",
icon: 'my_app_icon_simple',
largeIcon: DrawableResourceAndroidBitmap('my_app_icon'),
styleInformation: await getBigPictureStyle(notification),
sound: RawResourceAndroidNotificationSound('slow_spring_board'));
}
}
Future<BigPictureStyleInformation> getBigPictureStyle(
DataNotification notification) async {
if (notification.imageUrl != null) {
print("downloading");
final String bigPicturePath =
await _downloadAndSaveFile(notification.imageUrl, 'bigPicture');
return BigPictureStyleInformation(FilePathAndroidBitmap(bigPicturePath),
hideExpandedLargeIcon: true,
contentTitle: notification.title,
htmlFormatContentTitle: false,
summaryText: notification.body,
htmlFormatSummaryText: false);
} else {
print("NOT downloading");
return null;
}
}
Future<String> _downloadAndSaveFile(String url, String fileName) async {
final Directory directory = await getApplicationDocumentsDirectory();
final String filePath = '${directory.path}/$fileName';
final http.Response response = await http.get(url);
final File file = File(filePath);
await file.writeAsBytes(response.bodyBytes);
return filePath;
}
class NotificationService {
FirebaseMessaging _fcm = FirebaseMessaging();
void init() async {
final AndroidInitializationSettings initializationSettingsAndroid =
AndroidInitializationSettings('app_icon');
final IOSInitializationSettings initializationSettingsIOS =
IOSInitializationSettings();
final InitializationSettings initializationSettings =
InitializationSettings(
android: initializationSettingsAndroid,
iOS: initializationSettingsIOS,
);
await notificationsPlugin.initialize(initializationSettings,
onSelectNotification: (value) => onSelectNotification(value));
_fcm.configure(
onMessage: onMessage,
onBackgroundMessage: backgroundMessageHandler,
onLaunch: onLaunch,
onResume: onResume,
);
}
}
data-notification.飞镖
import 'package:enum_to_string/enum_to_string.dart';
class DataNotification {
final String id;
final String title;
final String body;
final NotificationType notificationType;
final String imageUrl;
final dynamic data;
final DateTime readAt;
final DateTime createdAt;
final DateTime updatedAt;
DataNotification({
this.id,
this.title,
this.body,
this.notificationType,
this.imageUrl,
this.data,
this.readAt,
this.createdAt,
this.updatedAt,
});
factory DataNotification.fromPushMessage(dynamic data) {
return DataNotification(
id: data['id'],
title: data['title'],
body: data['body'],
notificationType: EnumToString.fromString(
NotificationType.values, data['notification_type']),
imageUrl: data['image_url'] ?? null,
data: data,
readAt: null,
createdAt: null,
updatedAt: null,
);
}
}
enum NotificationType {
NONE,
NEW_INVITATION,
NEW_MEMBERSHIP,
NEW_ADMIN_ROLE,
MEMBERSHIP_BLOCKED,
MEMBERSHIP_REMOVED,
NEW_MEMBERSHIP_REQUEST
}
你可以忽略 DataNotification 模型部分，自己解析通知，我只是用它在后端进行一些额外的交互。
这对我来说效果很好，但是，如果您想显示“onSelectNotification”或类似的警报，您需要找到一种方法来获取上下文。不确定（还）如何做到这一点。
编辑：
你可以在 main.dart
中这样称呼它
void main() async {
WidgetsFlutterBinding.ensureInitialized();
NotificationService().init();
runApp(
MyApp()
);
}
请注意当前后台消息和 hot-reloading 存在问题：https://github.com/FirebaseExtended/flutterfire/issues/4316
这是我第一次使用 Flutter 测试 FCM。我检查了 GitHub.
中的一些 SO 问题和文档我可以发送通知，并且当应用程序未运行时它们会被发送 运行。
如果应用 运行 或在后台，则消息不可见。
我已经在 main.dart 文件中添加了代码，但不确定这是不是正确的方法。
编辑： 这是用于 onResume:
{notification: {}, data: {badge: 1, collapse_key: com.HT, google.original_priority: high, google.sent_time: 1623238, google.delivered_priority: high, sound: default, google.ttl: 2419200, from: 71374876, body: Body, title: Title, click_action: FLUTTER_NOTIFICATION_CLICK, google.message_id: 0:50a56}}
在下面的代码中，我尝试将本地通知与 FCM 结合使用。
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final FirebaseMessaging _firebaseMessaging = FirebaseMessaging();
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
new FlutterLocalNotificationsPlugin();
@override
void initState() {
var initializationSettingsAndroid =
new AndroidInitializationSettings('@mipmap/ic_launcher');
var initializationSettingsIOS = new IOSInitializationSettings();
var initializationSettings = new InitializationSettings(
android: initializationSettingsAndroid, iOS: initializationSettingsIOS);
flutterLocalNotificationsPlugin.initialize(initializationSettings,
onSelectNotification: onSelectNotification);
_firebaseMessaging.configure(
onMessage: (Map<String, dynamic> message) async {
showNotification(
message['notification']['title'], message['notification']['body']);
print("onMessage: $message");
},
onLaunch: (Map<String, dynamic> message) async {
print("onLaunch: $message");
// Navigator.pushNamed(context, '/notify');
ExtendedNavigator.of(context).push(
Routes.bookingQRScan,
);
},
onResume: (Map<String, dynamic> message) async {
print("onResume: $message");
},
);
}
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.blue,
),
debugShowCheckedModeBanner: false,
home: AnimatedSplashScreen(), //SplashScreen()
builder: ExtendedNavigator.builder<a.Router>(router: a.Router()),
);
}
Future onSelectNotification(String payload) async {
showDialog(
context: context,
builder: (_) {
return new AlertDialog(
title: Text("PayLoad"),
content: Text("Payload : $payload"),
);
},
);
}
void showNotification(String title, String body) async {
await _demoNotification(title, body);
}
Future<void> _demoNotification(String title, String body) async {
var androidPlatformChannelSpecifics = AndroidNotificationDetails(
'channel_ID', 'channel name', 'channel description',
importance: Importance.max,
playSound: false, //true,
//sound: 'sound',
showProgress: true,
priority: Priority.high,
ticker: 'test ticker');
//var iOSChannelSpecifics = IOSNotificationDetails();
var platformChannelSpecifics =
NotificationDetails(android: androidPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin
.show(0, title, body, platformChannelSpecifics, payload: 'test');
}
}
错误
This is when my app is running on foreground. E/FlutterFcmService(14434): Fatal: failed to find callback
W/FirebaseMessaging(14434): Missing Default Notification Channel metadata in AndroidManifest. Default value will be used.
W/ConnectionTracker(14434): Exception thrown while unbinding
W/ConnectionTracker(14434): java.lang.IllegalArgumentException: Service not registered: lu@fb04880
Notification is visible in notification center. Now i am clicking on it and app get terminated.
and new instance of app is running and below is the return code. I/flutter (14434): onResume: {notification: {}, data: {badge: 1, collapse_key: com.HT, google.original_priority: high, google.sent_time: 1607733798, google.delivered_priority: high, sound: default, google.ttl: 2419200, from: 774876, body: Body, title: Title, click_action: FLUTTER_NOTIFICATION_CLICK, google.message_id: 0:1607573733816296%850a56}}
E/FlutterFcmService(14434): Fatal: failed to find callback
W/ConnectionTracker(14434): Exception thrown while unbinding
编辑 2： 我做了更多挖掘并提出了以下代码。
final FirebaseMessaging _fcm = FirebaseMessaging();
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin =
FlutterLocalNotificationsPlugin();
var initializationSettingsAndroid;
var initializationSettingsIOS;
var initializationSettings;
void _showNotification() async {
//await _buildNotification();
}
Future<dynamic> myBackgroundMessageHandler(Map<String, dynamic> message) {
if (message.containsKey('data')) {
// Handle data message
final dynamic data = message['data'];
}
if (message.containsKey('notification')) {
// Handle notification message
final dynamic notification = message['notification'];
}
// Or do other work.
}
Future<void> _createNotificationChannel(
String id, String name, String description) async {
final flutterLocalNotificationsPlugin = FlutterLocalNotificationsPlugin();
var androidNotificationChannel = AndroidNotificationChannel(
id,
name,
description,
importance: Importance.max,
playSound: true,
// sound: RawResourceAndroidNotificationSound('not_kiddin'),
enableVibration: true,
);
await flutterLocalNotificationsPlugin
.resolvePlatformSpecificImplementation<
AndroidFlutterLocalNotificationsPlugin>()
?.createNotificationChannel(androidNotificationChannel);
}
Future<void> _buildNotification(String title, String body) async {
var androidPlatformChannelSpecifics = AndroidNotificationDetails(
'my_channel', 'Channel Name', 'Channel Description.',
importance: Importance.max,
priority: Priority.high,
// playSound: true,
enableVibration: true,
// sound: RawResourceAndroidNotificationSound('not_kiddin'),
ticker: 'noorderlicht');
//var iOSChannelSpecifics = IOSNotificationDetails();
var platformChannelSpecifics =
NotificationDetails(android: androidPlatformChannelSpecifics);
await flutterLocalNotificationsPlugin
.show(0, title, body, platformChannelSpecifics, payload: 'payload');
}
@override
void initState() {
super.initState();
initializationSettingsAndroid =
AndroidInitializationSettings('@mipmap/ic_launcher');
initializationSettingsIOS = IOSInitializationSettings(
onDidReceiveLocalNotification: onDidReceiveLocalNotification);
initializationSettings =
InitializationSettings(android: initializationSettingsAndroid);
// initializationSettingsAndroid, initializationSettingsIOS);
_fcm.requestNotificationPermissions();
_fcm.configure(
onMessage: (Map<String, dynamic> message) async {
print(message);
flutterLocalNotificationsPlugin.initialize(initializationSettings,
onSelectNotification: onSelectNotification);
//_showNotification();
Map.from(message).map((key, value) {
print(key);
print(value);
print(value['title']);
_buildNotification(value['title'], value['body']);
});
},
onLaunch: (Map<String, dynamic> message) async {
print("onLaunch: $message");
},
onResume: (Map<String, dynamic> message) async {
print("onResume: $message");
print(message['data']['title']);
//AlertDialog(title: message['data']['title']);
ExtendedNavigator.of(context).push(
Routes.bookingQRScan,
);
//_showNotification();
},
);
}
Future onDidReceiveLocalNotification(
int id, String title, String body, String payload) async {
// display a dialog with the notification details, tap ok to go to another page
showDialog(
context: context,
builder: (BuildContext context) => CupertinoAlertDialog(
title: Text(title),
content: Text(body),
actions: [
CupertinoDialogAction(
isDefaultAction: true,
child: Text('Ok'),
onPressed: () {},
)
],
),
);
}
Future onSelectNotification(String payload) async {
if (payload != null) {
debugPrint('Notification payload: $payload');
}
}
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.blue,
),
debugShowCheckedModeBanner: false,
home: AnimatedSplashScreen(), //SplashScreen()
builder: ExtendedNavigator.builder<a.Router>(router: a.Router()),
);
}
使用上面的代码，我可以在通知栏中看到通知，但是我想重定向的 onresume 部分不起作用。不知道为什么。
我还想在 onmeesage 和 onresume 事件中显示警告框。
您的有效载荷必须正确，有效载荷中的notification和dataobject必须包含title和body密钥。当您的应用程序在 notification 键中关闭时，您将得到 title 和 body null 在这种情况下，您应该在侧数据键中有标题和 body。
{notification: {title: title, body: test}, data: {notification_type: Welcome, body: body, badge: 1, sound: , title: farhana mam, click_action: FLUTTER_NOTIFICATION_CLICK, message: H R U, category_id: 2, product_id: 1, img_url: }}
不要输入标题和 body null
void showNotification(Map<String, dynamic> msg) async {
//{notification: {title: title, body: test}, data: {notification_type: Welcome, body: body, badge: 1, sound: , title: farhana mam, click_action: FLUTTER_NOTIFICATION_CLICK, message: H R U, category_id: 2, product_id: 1, img_url: }}
print(msg);
print(msg['data']['title']);
var title = msg['data']['title'];
var msge = msg['data']['body'];
var android = new AndroidNotificationDetails(
'channel id', 'channel NAME', 'CHANNEL DESCRIPTION',
priority: Priority.High, importance: Importance.Max);
var iOS = new IOSNotificationDetails();
var platform = new NotificationDetails(android, iOS);
await flutterLocalNotificationsPlugin.show(0, title, msge, platform,
payload: msge);
}
用于重定向
FlutterLocalNotificationsPlugin flutterLocalNotificationsPlugin = new FlutterLocalNotificationsPlugin();
var android = new AndroidInitializationSettings('@mipmap/ic_launcher');
var iOS = new IOSInitializationSettings();
var initSetttings = new InitializationSettings(android, iOS);
flutterLocalNotificationsPlugin.initialize(initSetttings, onSelectNotification: onSelectNotification);
firebaseCloudMessaging_Listeners();
Future onSelectNotification(String payload) async {
if (payload != null) {
debugPrint('notification payload:------ ${payload}');
await Navigator.push(
context,
new MaterialPageRoute(builder: (context) => NotificationListing()),
).then((value) {});
}
}
在'onSelectNotification'中你可以在字符串参数中传递你的条件并且你可以重定向
（可选，但推荐）如果希望在用户单击系统托盘中的通知时在您的应用中收到通知（通过 onResume 和 onLaunch，见下文），请在标签中包含以下 intent-filter你的 android/app/src/main/AndroidManifest.xml：
看看你上面的（最后编辑的）代码，我认为首先你必须确定，是使用 localnotifications 还是默认的 fcm。由于您的 myBackgroundMessageHandler 不执行任何操作，因此我假设是后者。尝试暂时用固定字符串替换标题（例如“这是本地的”）以确保。
其次，myBackgroundMessageHandler 只会为数据消息调用。如果你使用你一开始写的有效负载，你应该没问题。无论如何，请确保不要将标题、body、style-information 等直接放在负载中。需要的就放在数据节点里面。
这是我使用的代码：
calling the notificationService init() method in main.dart
notification-service.飞镖
import 'package:flutter_dotenv/flutter_dotenv.dart';
import 'package:app/models/data-notification.dart';
import 'dart:async';
import 'package:firebase_messaging/firebase_messaging.dart';
import 'package:flutter_local_notifications/flutter_local_notifications.dart';
import 'package:http/http.dart' as http;
import 'package:path_provider/path_provider.dart';
import 'dart:io';
FlutterLocalNotificationsPlugin notificationsPlugin =
FlutterLocalNotificationsPlugin();
//Function to handle Notification data in background.
Future<dynamic> backgroundMessageHandler(Map<String, dynamic> message) {
print("FCM backgroundMessageHandler $message");
showNotification(DataNotification.fromPushMessage(message['data']));
return Future<void>.value();
}
//Function to handle Notification Click.
Future<void> onSelectNotification(String payload) {
print("FCM onSelectNotification");
return Future<void>.value();
}
//Function to Parse and Show Notification when app is in foreground
Future<dynamic> onMessage(Map<String, dynamic> message) {
print("FCM onMessage $message");
showNotification(DataNotification.fromPushMessage(message['data']));
return Future<void>.value();
}
//Function to Handle notification click if app is in background
Future<dynamic> onResume(Map<String, dynamic> message) {
print("FCM onResume $message");
return Future<void>.value();
}
//Function to Handle notification click if app is not in foreground neither in background
Future<dynamic> onLaunch(Map<String, dynamic> message) {
print("FCM onLaunch $message");
return Future<void>.value();
}
void showNotification(DataNotification notification) async {
final AndroidNotificationDetails androidPlatformChannelSpecifics =
await getAndroidNotificationDetails(notification);
final NotificationDetails platformChannelSpecifics =
NotificationDetails(android: androidPlatformChannelSpecifics);
await notificationsPlugin.show(
0,
notification.title,
notification.body,
platformChannelSpecifics,
);
}
Future<AndroidNotificationDetails> getAndroidNotificationDetails(
DataNotification notification) async {
switch (notification.notificationType) {
case NotificationType.NEW_INVITATION:
case NotificationType.NEW_MEMBERSHIP:
case NotificationType.NEW_ADMIN_ROLE:
case NotificationType.MEMBERSHIP_BLOCKED:
case NotificationType.MEMBERSHIP_REMOVED:
case NotificationType.NEW_MEMBERSHIP_REQUEST:
return AndroidNotificationDetails(
'organization',
'Organization management',
'Notifications regarding your organizations and memberships.',
importance: Importance.max,
priority: Priority.high,
showWhen: false,
category: "Organization",
icon: 'my_app_icon_simple',
largeIcon: DrawableResourceAndroidBitmap('my_app_icon'),
styleInformation: await getBigPictureStyle(notification),
sound: RawResourceAndroidNotificationSound('slow_spring_board'));
case NotificationType.NONE:
default:
return AndroidNotificationDetails('general', 'General notifications',
'General notifications that are not sorted to any specific topics.',
importance: Importance.max,
priority: Priority.high,
showWhen: false,
category: "General",
icon: 'my_app_icon_simple',
largeIcon: DrawableResourceAndroidBitmap('my_app_icon'),
styleInformation: await getBigPictureStyle(notification),
sound: RawResourceAndroidNotificationSound('slow_spring_board'));
}
}
Future<BigPictureStyleInformation> getBigPictureStyle(
DataNotification notification) async {
if (notification.imageUrl != null) {
print("downloading");
final String bigPicturePath =
await _downloadAndSaveFile(notification.imageUrl, 'bigPicture');
return BigPictureStyleInformation(FilePathAndroidBitmap(bigPicturePath),
hideExpandedLargeIcon: true,
contentTitle: notification.title,
htmlFormatContentTitle: false,
summaryText: notification.body,
htmlFormatSummaryText: false);
} else {
print("NOT downloading");
return null;
}
}
Future<String> _downloadAndSaveFile(String url, String fileName) async {
final Directory directory = await getApplicationDocumentsDirectory();
final String filePath = '${directory.path}/$fileName';
final http.Response response = await http.get(url);
final File file = File(filePath);
await file.writeAsBytes(response.bodyBytes);
return filePath;
}
class NotificationService {
FirebaseMessaging _fcm = FirebaseMessaging();
void init() async {
final AndroidInitializationSettings initializationSettingsAndroid =
AndroidInitializationSettings('app_icon');
final IOSInitializationSettings initializationSettingsIOS =
IOSInitializationSettings();
final InitializationSettings initializationSettings =
InitializationSettings(
android: initializationSettingsAndroid,
iOS: initializationSettingsIOS,
);
await notificationsPlugin.initialize(initializationSettings,
onSelectNotification: (value) => onSelectNotification(value));
_fcm.configure(
onMessage: onMessage,
onBackgroundMessage: backgroundMessageHandler,
onLaunch: onLaunch,
onResume: onResume,
);
}
}
data-notification.飞镖
import 'package:enum_to_string/enum_to_string.dart';
class DataNotification {
final String id;
final String title;
final String body;
final NotificationType notificationType;
final String imageUrl;
final dynamic data;
final DateTime readAt;
final DateTime createdAt;
final DateTime updatedAt;
DataNotification({
this.id,
this.title,
this.body,
this.notificationType,
this.imageUrl,
this.data,
this.readAt,
this.createdAt,
this.updatedAt,
});
factory DataNotification.fromPushMessage(dynamic data) {
return DataNotification(
id: data['id'],
title: data['title'],
body: data['body'],
notificationType: EnumToString.fromString(
NotificationType.values, data['notification_type']),
imageUrl: data['image_url'] ?? null,
data: data,
readAt: null,
createdAt: null,
updatedAt: null,
);
}
}
enum NotificationType {
NONE,
NEW_INVITATION,
NEW_MEMBERSHIP,
NEW_ADMIN_ROLE,
MEMBERSHIP_BLOCKED,
MEMBERSHIP_REMOVED,
NEW_MEMBERSHIP_REQUEST
}
你可以忽略 DataNotification 模型部分，自己解析通知，我只是用它在后端进行一些额外的交互。
这对我来说效果很好，但是，如果您想显示“onSelectNotification”或类似的警报，您需要找到一种方法来获取上下文。不确定（还）如何做到这一点。
编辑： 你可以在 main.dart
中这样称呼它void main() async {
WidgetsFlutterBinding.ensureInitialized();
NotificationService().init();
runApp(
MyApp()
);
}
请注意当前后台消息和 hot-reloading 存在问题：https://github.com/FirebaseExtended/flutterfire/issues/4316