从AppDelegate中里面的ViewController preform功能 [英] Preform function inside ViewController from AppDelegate

问题描述

能否在AppDelegate中收到一个推送通知的运行在一个的ViewController功能？

该应用程序包含三个选项卡，第三个需要时，应用程序获取推送通知重新加载其网页视图。

   - （无效）应用：（*的UIApplication）的应用
didReceiveRemoteNotification：（NSDictionary的*）{用户信息}
 

解决方案

是的，你需要注册你的的viewController 为特定的通知，例如，在当你收到你的情况远程通知，只是发布自定义通知，并在您的viewController，注册该通知/收听该通知并执行要执行的方法。

当您收到 remoteNotification

   - （无效）应用：（*的UIApplication）的应用
didReceiveRemoteNotification：（NSDictionary的*）{用户信息[NSNotificationCenter defaultCenter] postNotificationName：@pushNotification的对象：无用户信息：用户信息];
}
 

在 viewController.m 注册的ViewController此通知

   - （无效）viewDidLoad中{    [NSNotificationCenter defaultCenter]的addObserver：自我选择：@selector（pushNotificationReceived）名称：@pushNotification的对象：无];    [超级viewDidLoad中];}
 

和下一个执行选择

   - （无效）{pushNotificationReceived//做你的东西}
 

最后不要忘了，从通知你的注销的dealloc 法

   - （空）dealloc的{
[NSNotificationCenter defaultCenter] removeObserver：个体经营];
}
 

Can an AppDelegate run a "function" in a viewcontroller on receipt of a push notification?

The application contains three tabs, the third needs to reload its webview when the application gets a push notification.

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

}

解决方案

yes, you need to register your viewController for the particular notification, e.g in your case when you receive a remote notification, just post a custom notification and in your viewController, register this notification/listen to this notification and perform the method you want to perform.

when you receive remoteNotification

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

[[NSNotificationCenter defaultCenter] postNotificationName:@"pushNotification" object:nil userInfo:userInfo];
}

in your viewController.m register the viewcontroller for this notification

- (void)viewDidLoad {

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(pushNotificationReceived) name:@"pushNotification" object:nil];

    [super viewDidLoad];

}

and next implement the selector

-(void)pushNotificationReceived{

// do your stuff

}

and finally don't forget to unregister from notification in your dealloc method

-(void)dealloc {
[[NSNotificationCenter defaultCenter] removeObserver:self];
}

这篇关于从AppDelegate中里面的ViewController preform功能的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！