Question

我收到了远程通知。我想发布一个nsnotification。我可以发布通知，但我无法在当前的视图控制器中收到它。

这是我的代码。

我知道这被称为：

AppDelegate.m

 - (void)application:(UIApplication *)application didReceiveRemoteNotification:(NSDictionary *)userInfo
 {

 [[NSNotificationCenter defaultCenter] postNotificationName:CHAT_MESSAGE_RECEIVED object:nil userInfo:messageIdDict];

 }

在调用上述代码之前调用它

MyViewController.m

 -(void)viewWillAppear:(BOOL)animated
 {

 [[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(messageReceived:)
                                             name:CHAT_MESSAGE_RECEIVED
                                           object:self];

 }

 -(void)messageReceived:(NSDictionary *)userInfo
 {
      NSLog(@"Logged");
 }

Answer 1

以下是我将如何做到这一点：

在AppDelegate中：

- (void)application:(UIApplication *)application 
didReceiveRemoteNotification:(NSDictionary *)userInfo
 {

 [[NSNotificationCenter defaultCenter] postNotificationName:CHAT_MESSAGE_RECEIVED              
                                                     object:messageIdDict 
                                                   userInfo:nil];

 }

在MyViewController中：

-(void)viewWillAppear:(BOOL)animated
 {

 [[NSNotificationCenter defaultCenter] addObserver:self
                                          selector:@selector(messageReceived:)
                                              name:CHAT_MESSAGE_RECEIVED
                                            object:nil];

 }

 -(void)messageReceived:(NSNotification *)notification
 {
      NSDictionary *userInfo = NSDictionary dictionaryWithDictionary:[notification object]];
      NSLog(@"Logged");
 }

希望这有帮助

在Appdelegate.m中的后台线程上发送NSNotification

1 个答案: