本地通知——UILocalNotification

 在iOS中，有兩種推送類型，一種是遠端推送，通過apns推送。另一種是本地推送UILocalNotification.本章介紹本地通知。

- (void) creatLocalNotification{
    
    //目前時間的20s之後
    NSDate *date = [NSDate dateWithTimeIntervalSinceNow:10];
   
    UILocalNotification *notifacation = [[UILocalNotification alloc] init ];
    
    if (notifacation) {
        //timeZone是UILocalNotification激發時間是否根據時區改變而改變，如果設定為nil的話，那麼UILocalNotification将在一段時候後被激發，而不是某一個确切時間被激發
        [notifacation setTimeZone:[NSTimeZone defaultTimeZone]];
        //fireDate是UILocalNotification的激發的确切時間
        [notifacation setFireDate:date];
        //repeatInterval是UILocalNotification被重複激發之間的時間差，不過時間差是完全根據月曆機關（NSCalendarUnit）的，例如每周激發的機關，NSWeekCalendarUnit，如果不設定的話，将不會重複激發
        [notifacation setRepeatInterval:NSWeekdayCalendarUnit];
        
        //推送内容
        [notifacation setAlertBody:@"推送demo"];
        
        //推送聲音
        notifacation.soundName = UILocalNotificationDefaultSoundName;
        
        //設定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激發時間是否根據時區改變而改變，如果設定為nil的話，那麼UILocalNotification将在一段時候後被激發，而不是某一個确切時間被激發
        [notifacation1 setTimeZone:[NSTimeZone defaultTimeZone]];
        //fireDate是UILocalNotification的激發的确切時間
        [notifacation1 setFireDate:date1];
           

//repeatInterval是UILocalNotification被重複激發之間的時間差，不過時間差是完全根據月曆機關（NSCalendarUnit）的，例如每周激發的機關，NSWeekCalendarUnit，如果不設定的話，将不會重複激發。說明白就是 每周觸發一次 還是每天 還是每年，，每月。都有對應的宏可供選擇
        [notifacation1 setRepeatInterval:NSWeekdayCalendarUnit];
        
        //推送内容
        [notifacation1 setAlertBody:@"推送demo"];
        
        //推送聲音
        notifacation1.soundName = UILocalNotificationDefaultSoundName;
        
        //設定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];
    }
     */
}
           

對于多個本地通知，如何區分呢，如上代碼已經寫出了

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

用一個字典 ， 寫入作為區分的關鍵字。

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減1
    application.applicationIconBadgeNumber -= 1;
    
}
           

用 此方法接受本地通知的回調。

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,取消一個本地通知
    [[UIApplication sharedApplication] cancelLocalNotification:nil];
    
    //3，取消所有本地通知
    [[UIApplication sharedApplication] cancelAllLocalNotifications];
    
    
    
}