iOS定时本地推送

说到推送,项目开发中有可能会使用定时推送.类似闹钟,或者提醒事项,定个时间发起推送.
使用本地推送和普通推送一样,也需要注册推送通知.

在Appdelegate.m中的

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

方法中填写下放代码.

if ([UIApplication instancesRespondToSelector:@selector(registerUserNotificationSettings:)]){
        [[UIApplication sharedApplication] registerUserNotificationSettings:[UIUserNotificationSettings settingsForTypes:UIUserNotificationTypeAlert|UIUserNotificationTypeBadge|UIUserNotificationTypeSound categories:nil]];
    }

然后实现接受本地推送的方法

//接受处理本地推送
- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification NS_AVAILABLE_IOS(4_0) {
    //使用UIAlertView显示推送的消息
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:notification.alertTitle message:notification.alertBody delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
    [alert show];
}

好了,先在我们创建一个定时推送.

- (void)setUpLocalNotification:(NSString *)dateStr {
    UILocalNotification *localNotification = [[UILocalNotification alloc] init];
    if (localNotification == nil) {
        return;
    }
    
    //处理时间字符串
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    formatter.dateFormat = @"yyyy-MM-dd HH:mm";
    NSDate *fireDate = [formatter dateFromString:dateStr];
    NSAssert(fireDate, @"dateStr类型不匹配,或者为nil");
    
    //设置UILocalNotification
    [localNotification setTimeZone:[NSTimeZone defaultTimeZone]];//设置时区
    localNotification.fireDate = fireDate;//设置触发时间
    localNotification.repeatInterval = 0;//设置重复间隔
    
    localNotification.alertBody = @"定时推送的信息";
    localNotification.alertTitle = @"定时推送";
    localNotification.soundName = UILocalNotificationDefaultSoundName;
    
    //当然你也可以调取当前的气泡,并且设置.也可以设置一个userInfo进行传递信息
    /*
    [localNotification setApplicationIconBadgeNumber:66];
    localNotification.applicationIconBadgeNumber += 1;
    localNotification.userInfo = @{@"KEY" : @"VALUE"};
     */
    
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotification];
}

然后给定你的dateStr,就行了

注意的是:dateStr的类型需要和你的dateFormat类型相同,不然fireDate会为nil.