本地通知——UILocalNotification

 在iOS中，有两种推送类型，一种是远程推送，通过apns推送。另一种是本地推送UILocalNotification.本章介绍本地通知。

- (void) creatLocalNotification{
    
    //当前时间的20s之后
    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:10];
   
    UILocalNotification *notifacation = [[UILocalNotification alloc] init ];
    
    if (notifacation) {
        //timeZone是UILocalNotification激发时间是否根据时区改变而改变，如果设置为nil的话，那么UILocalNotification将在一段时候后被激发，而不是某一个确切时间被激发
        [notifacation setTimeZone:[NSTimeZone defaultTimeZone]];
        //fireDate是UILocalNotification的激发的确切时间
        [notifacation setFireDate:date];
        //repeatInterval是UILocalNotification被重复激发之间的时间差，不过时间差是完全根据日历单位（NSCalendarUnit）的，例如每周激发的单位，NSWeekCalendarUnit，如果不设置的话，将不会重复激发
        [notifacation setRepeatInterval:NSWeekdayCalendarUnit];
        
        //推送内容
        [notifacation setAlertBody:@"推送demo"];
        
        //推送声音
        notifacation.soundName = UILocalNotificationDefaultSoundName;
        
        //设置badge
        [notifacation setApplicationIconBadgeNumber:1];
    
        
        notifacation.alertLaunchImage = [[NSBundle mainBundle] pathForResource:@"1" ofType:@"png"];
        
        NSDictionary *dic = [[NSDictionary alloc] initWithObjectsAndKeys:@"nit",@"key", nil];
        notifacation.userInfo = dic;
        
        UIApplication *application = [UIApplication sharedApplication];
        
        [application scheduleLocalNotification:notifacation];
    }
    /**
    UILocalNotification *notifacation1 = [[UILocalNotification alloc] init ];
    NSDate *date1 = [NSDate dateWithTimeIntervalSinceNow:15];
    if (notifacation1) {
        //timeZone是UILocalNotification激发时间是否根据时区改变而改变，如果设置为nil的话，那么UILocalNotification将在一段时候后被激发，而不是某一个确切时间被激发
        [notifacation1 setTimeZone:[NSTimeZone defaultTimeZone]];
        //fireDate是UILocalNotification的激发的确切时间
        [notifacation1 setFireDate:date1];
           

//repeatInterval是UILocalNotification被重复激发之间的时间差，不过时间差是完全根据日历单位（NSCalendarUnit）的，例如每周激发的单位，NSWeekCalendarUnit，如果不设置的话，将不会重复激发。说明白就是 每周触发一次 还是每天 还是每年，，每月。都有对应的宏可供选择
        [notifacation1 setRepeatInterval:NSWeekdayCalendarUnit];
        
        //推送内容
        [notifacation1 setAlertBody:@"推送demo"];
        
        //推送声音
        notifacation1.soundName = UILocalNotificationDefaultSoundName;
        
        //设置badge
        [notifacation1 setApplicationIconBadgeNumber:1];
        
        //  [notifacation setAlertAction:@"取消"];
        
        //   [notifacation setAlertLaunchImage:@"1.png"];
        
        NSDictionary *dic = [[NSDictionary alloc] initWithObjectsAndKeys:@"nit1",@"key", nil];
        notifacation1.userInfo = dic;
        
        UIApplication *application = [UIApplication sharedApplication];
        
        [application scheduleLocalNotification:notifacation1];
    }
     */
}
           

对于多个本地通知，如何区分呢，如上代码已经写出了

NSDictionary *dic = [[NSDictionary alloc] initWithObjectsAndKeys:@"nit1",@"key", nil];
        notifacation1.userInfo = dic;
           

用一个字典 ， 写入作为区分的关键字。

代理方法：

UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"推送"
                                                    message:notification.alertBody
                                                   delegate:self
                                          cancelButtonTitle:@"取消"
                                          otherButtonTitles:nil, nil];
 
    [alert show];
    
    //badge减1
    application.applicationIconBadgeNumber -= 1;
    
}
           

用 此方法接受本地通知的回调。

取消UILocalNotifacation

- (void) cancelNotification{
    
    //1
    NSArray *localArray = [[UIApplication sharedApplication] scheduledLocalNotifications];
    
    for (UILocalNotification *not in localArray) {
        
        if (not.userInfo) {
            
            if([[not.userInfo objectForKey:@"key"] isEqualToString:@"nit"] ){
                
                [[UIApplication sharedApplication] cancelLocalNotification:not];
                
            }
            
            if([[not.userInfo objectForKey:@"key"] isEqualToString:@"nit1"] ){
                
                [[UIApplication sharedApplication] cancelLocalNotification:not];
                
            }
        }
        
    }
    //2,取消一个本地通知
    [[UIApplication sharedApplication] cancelLocalNotification:nil];
    
    //3，取消所有本地通知
    [[UIApplication sharedApplication] cancelAllLocalNotifications];
    
    
    
}