系统服务之本地通知

开发中不仅仅有远程推送还有本地通知，这样可以减轻服务器的压力。

一、在IOS8中需要先注册

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    UIUserNotificationSettings *settings = [UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeBadge categories:nil];

    [[UIApplication sharedApplication] registerUserNotificationSettings:settings];

    return YES;

}

 二、在-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification方法中接收通知

//这个方法只有在程序启动之后才会执行，因此当程序处于后台时，该方法不会执行

-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification

{

    NSLog(@"%@",notification);

    UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"通知" message:@"下班了" delegate:self cancelButtonTitle:@"NO" otherButtonTitles:@"YES", nil];

    [alertView show];

    [[UIApplication sharedApplication] setApplicationIconBadgeNumber:0];



}

 三、创建本地通知

//

//  ViewController.m

//  UILocalNotification

//

//  Created by City--Online on 15/5/15.

//  Copyright (c) 2015年 XQB. All rights reserved.

//



#import "ViewController.h"



@interface ViewController ()



@end



@implementation ViewController



- (void)viewDidLoad {

    [super viewDidLoad];

    

    UILocalNotification *notification=[[UILocalNotification alloc]init];

    if (notification) {

        //设置推送时间

        NSDate *currentDate=[NSDate date];

        notification.timeZone=[NSTimeZone defaultTimeZone];

        notification.fireDate=[currentDate dateByAddingTimeInterval:10];

        

        //设置重复间隔  NSCalendarUnit类型 0表示不重复

        notification.repeatInterval=kCFCalendarUnitMinute;

        //设置提醒的文字

        //设备收到本地通知时横额或锁屏时的主要文字内容

        notification.alertBody=@"内容";

        notification.alertTitle=@"标题";

        //锁屏时显示的slide to后面的文字内容

        notification.alertAction=NSLocalizedString(@"我是谁？", nil);

        //提示音 默认

        notification.soundName=UILocalNotificationDefaultSoundName;

        //设置应用程序右上角的提醒个数

        notification.applicationIconBadgeNumber++;

        

        //设置通知的userInfo

        NSMutableDictionary *userInfo=[[NSMutableDictionary alloc]init];

        [userInfo setObject:@"kLocalNotificationID" forKey:@"kLocalNotificationID"];

        [userInfo setObject:@"cuiyanwei" forKey:@"name"];

        notification.userInfo=userInfo;

        //将通知添加到系统中

        //如果我们的应用程序给系统发送的本地通知是周期性的，那么即使把程序删了重装，之前的本地通知在重装时依然存在（没有从系统中移除）(注册到系统服务里并不是在APP中)

        [[UIApplication sharedApplication]scheduleLocalNotification:notification];

//        [self delete];

        

    }

}

//删除本地通知

-(void)delete

{

    //往系统服务里面注册之后有时会需要删除

    //1.暴力删除,取消所有的通知

    //[[UIApplication sharedApplication] cancelAllLocalNotifications];

    //2.删除制定的通知

    for (UILocalNotification *notification in [[UIApplication sharedApplication] scheduledLocalNotifications]) {

        NSString *kLocalNotificationID=[notification.userInfo objectForKey:@"kLocalNotificationID"];

        NSLog(@"%@",kLocalNotificationID);

        if ([kLocalNotificationID isEqualToString:@"kLocalNotificationID"]) {

            [[UIApplication sharedApplication] cancelLocalNotification:notification];

            UIAlertView *alertView=[[UIAlertView alloc]initWithTitle:@"取消通知" message:@"已经取消通知" delegate:self cancelButtonTitle:@"YES" otherButtonTitles:nil, nil];

            [alertView show];

            break;

        

        }

    }

}



- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}



@end

 四、运行结果