Ios 如何将UnuseNotificationCenter和AppDelegate设置为FlotterStreamHandler事件接收器

我想在iOS中使用与apns相关的功能的FlightStreamHandler。TokenStreamHandler和MessageStreamHandler将接收设备令牌和用户信息反馈给dart端，但我遇到了如何将AppDelegate和UnuseNotificationCenter委托事件接收器添加到特定流处理程序的问题

b.h

#import <Flutter/Flutter.h>

@interface FlutterPushPlugin : NSObject <FlutterPlugin>
@end

@interface TokenStreamHandler : NSObject <FlutterStreamHandler>
@end

@interface MessageStreamHandler : NSObject <FlutterStreamHandler>
@end

#导入
@接口插件：NSObject
@结束
@接口TokenStreamHandler:NSObject
@结束
@接口MessageStreamHandler:NSObject
@结束

是的

#import "FlutterPushPlugin.h"
#import <UserNotifications/UserNotifications.h>

@implementation FlutterPushPlugin {
  ...
}

#pragma mark - FlutterPlugin

+ (void)registerWithRegistrar:(NSObject<FlutterPluginRegistrar>*)registrar {
  
  // Init plugin...
  
  FlutterEventChannel* tokenEventChannel =
      [FlutterEventChannel eventChannelWithName:@"flutter_push/token"
                                binaryMessenger:[registrar messenger]];
  TokenStreamHandler* tokenStreamHandler = [[TokenStreamHandler alloc] init];
  [tokenEventChannel setStreamHandler:tokenStreamHandler];
  
  FlutterEventChannel* messageEventChannel =
      [FlutterEventChannel eventChannelWithName:@"flutter_push/message"
                            binaryMessenger:[registrar messenger]];
  MessageStreamHandler* messageStreamHandler = [[MessageStreamHandler alloc] init];
  [messageEventChannel setStreamHandler:messageStreamHandler];
  
  // ...
}

#pragma mark - UNUserNotificationCenter Delegate Methods

// Receive displayed notifications for iOS 10 devices.
// Handle incoming notification messages while app is in the foreground.
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
       willPresentNotification:(UNNotification *)notification
         withCompletionHandler:(void (^)(UNNotificationPresentationOptions options))completionHandler
    API_AVAILABLE(macos(10.14), ios(10.0)) {
  NSDictionary *userInfo = notification.request.content.userInfo;
  
  // 2. Get the UserInfo when app on foreground.
  
  completionHandler(UNNotificationPresentationOptionBadge | UNNotificationPresentationOptionAlert);

}

// Handle notification messages after display notification is tapped by the user.
- (void)userNotificationCenter:(UNUserNotificationCenter *)center
    didReceiveNotificationResponse:(UNNotificationResponse *)response
             withCompletionHandler:(void (^)(void))completionHandler
    API_AVAILABLE(macos(10.14), ios(10.0)) {
  NSDictionary *userInfo = response.notification.request.content.userInfo;
  
  // 2. Get the UserInfo when app on background.

  completionHandler();
}

#pragma mark - AppDelegate Methods

- (void)application:(UIApplication *)application
    didRegisterForRemoteNotificationsWithDeviceToken:(NSData *)deviceToken {
  const char *data = [deviceToken bytes];
  NSMutableString *ret = [NSMutableString string];
  for (NSUInteger i = 0; i < [deviceToken length]; i++) {
    [ret appendFormat:@"%02.2hhx", data[i]];
  }
  
  // 1. Get the device token.
}

@end

#pragma mark - TokenStreamHandler impl

@implementation TokenStreamHandler {
  FlutterEventSink _eventSink;
}

- (FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)events {
  _eventSink = events;
  
  // 1. How to set AppDelegate Delegate to TokenStreamHandler event sink for getting the token?
  [[NSNotificationCenter defaultCenter] addObserver:self
                                           selector:@selector(onTokenDidChange:)
                                               name:UIDeviceTokenDidChangeNotification
                                             object:nil];
  return nil;
}

- (FlutterError*)onCancelWithArguments:(id)arguments {
  return nil;
}

@end

#pragma mark - MessageStreamHandler impl

@implementation MessageStreamHandler {
  FlutterEventSink _eventSink;
}

- (FlutterError*)onCancelWithArguments:(id)arguments {
  _eventSink = events;

  // 2. How to set UNUserNotificationCenter Delegate to MessageStreamHandler event sink for getting the UserInfo?
  [[NSNotificationCenter defaultCenter] addObserver:self
                                           selector:@selector(onMessageDidChange:)
                                               name:UIMessageDidChangeNotification
                                             object:nil];
  return nil;
}

- (FlutterError*)onListenWithArguments:(id)arguments eventSink:(FlutterEventSink)events {
  return nil;
}

@end

#导入“flatterpushplugin.h”
#进口
@插件的实现{
...
}
#pragma-mark-plugin
+（无效）注册人和注册人：（NSObject*）注册人{
//初始化插件。。。
FlatterEventChannel*令牌事件频道=
[FlatterEventChannel eventChannelWithName:@“Flatter_推送/令牌”
binaryMessenger:[注册信使]]；
TokenStreamHandler*TokenStreamHandler=[[TokenStreamHandler alloc]init]；
[tokenEventChannel setStreamHandler:tokenStreamHandler]；
FlatterEventChannel*消息事件频道=
[FlatterEventChannel eventChannelWithName:@“Flatter\u推送/消息”
binaryMessenger:[注册信使]]；
MessageStreamHandler*MessageStreamHandler=[[MessageStreamHandler alloc]init]；
[messageEventChannel setStreamHandler:messageStreamHandler]；
// ...
}
#pragma标记-未使用通知中心委托方法
//接收iOS 10设备的显示通知。
//在应用程序处于前台时处理传入的通知消息。
-（void）用户通知中心：（UNUserNotificationCenter*）中心
遗嘱提示通知：（未通知*）通知
withCompletionHandler：（void（^）（UNNotificationPresentationOptions选项））completionHandler
API_可用（macos（10.14）、ios（10.0））{
NSDictionary*userInfo=notification.request.content.userInfo；
//2.应用程序在前台时获取用户信息。
完成处理程序（未通知PresentationOptionBadge |未通知PresentationOptionErt）；
}
//在用户点击显示通知后处理通知消息。
-（void）用户通知中心：（UNUserNotificationCenter*）中心
didReceiveNotificationResponse:（未通知响应*）响应
withCompletionHandler:（void（^）（void））completionHandler
API_可用（macos（10.14）、ios（10.0））{
NSDictionary*userInfo=response.notification.request.content.userInfo；
//2.应用程序在后台运行时获取用户信息。
completionHandler（）；
}
#pragma标记-AppDelegate方法
-（无效）申请：（UIApplication*）申请
DidRegisterForRemotonificationswithDeviceToken:（NSData*）deviceToken{
常量字符*数据=[deviceToken字节]；
NSMutableString*ret=[NSMutableString]；
对于（整数i=0；i<[deviceToken length]；i++）{
[ret appendFormat:@“%02.2hhx”，数据[i]]；
}
//1.获取设备令牌。
}
@结束
#pragma标记-TokenStreamHandler impl
@实现令牌流处理器{
FlatterEventSink _eventSink；
}
-（FlatterError*）仅包含以下参数的ListenWithArguments:（id）arguments eventSink:（FlatterEventSink）events{
_eventSink=事件；
//1.如何将AppDelegate委托设置为TokenStreamHandler事件接收器以获取令牌？
[[NSNotificationCenter defaultCenter]添加观察者：self
选择器：@selector（onTokenDidChange:）
名称：UIDeviceTokenDicChangeNotification
对象：无]；
返回零；
}
-（错误*）onCancelWithArguments:（id）参数{
返回零；
}
@结束
#pragma标记-MessageStreamHandler impl
@实现MessageStreamHandler{
FlatterEventSink _eventSink；
}
-（错误*）onCancelWithArguments:（id）参数{
_eventSink=事件；
//2.如何将UNUserNotificationCenter委托设置为MessageStreamHandler事件接收器以获取用户信息？
[[NSNotificationCenter defaultCenter]添加观察者：self
选择器：@selector（onMessageDidChange:）
名称：UIMessageDidChangeNotification
对象：无]；
返回零；
}
-（FlatterError*）仅包含以下参数的ListenWithArguments:（id）arguments eventSink:（FlatterEventSink）events{
返回零；
}
@结束