本地通知UILocalNotification

作者: 不会游泳De鱼 | 来源:发表于2016-06-16 20:35 被阅读1149次

在应用中有的时候需要做一个类似于闹钟提醒的功能,在每周的特定的几天中,在固定时间进行提醒。比如每周一到周五下午六点,需要吃药的时间就弹窗提醒:快去吃药!不要放弃治疗!
本地固定时间提醒,需要用到 UILocalNotification
如果只是添加一次,并且设置提醒的周期为NSCalendarUnitWeekOfYear ,那么就是每周只提醒一次。所以如果要达到每周固定星期几提醒则需要添加提醒天的次数,比如周一到周五提醒那么就需要添加五次,每个提醒的间隔都为一个星期。这样就可以做到每周固定星期提醒了。

for(id day in _weekArr) {// _weekArr 为周一到周日需要提醒的星期 
    UILocalNotification* beginLocalNotification = [[UILocalNotification alloc] init]; 
    NSDictionary* beginInfo = [NSDictionary dictionaryWithObject:kLocalNoti forKey:@"beginNoti"];
    beginLocalNotification.userInfo = beginInfo;
    beginLocalNotification.fireDate = [dateFormatter dateFromString:[NSString stringWithFormat:@"2015-06-%d %@:00",15+[day integerValue]-1,_beginTime]];// 在过去的某个星期内添加需要的本地提醒。并且设置提醒间隔为NSCalendarUnitWeekOfYear,如果添加在未来,那么提醒不会发生。 
    beginLocalNotification.alertBody = @"该吃药啦!";
    beginLocalNotification.soundName = @"ping.caf"; 
    beginLocalNotification.timeZone = [NSTimeZone defaultTimeZone]; 
    beginLocalNotification.alertAction = @"不要忘记吃药哦!"; 
    beginLocalNotification.repeatInterval = NSCalendarUnitWeekOfYear;// 每周循环提醒
    //按照规定的时候触发
    [[UIApplication sharedApplication] scheduleLocalNotification:beginLocalNotification];
    //立即触发一个通知
    //[[UIApplication sharedApplication] presentLocalNotificationNow: beginLocalNotification]; 
}

取消提醒比较简单,如果想取消所有的本地提醒:

[[UIApplication sharedApplication] cancelAllLocalNotifications];

取消特定的提醒:

NSArray *narry=[[UIApplication sharedApplication] scheduledLocalNotifications]; 
NSUInteger acount=[narry count]; 
if (acount<1) { 
    return false; 
} 
for (int i=0; i<acount; i++) { 
    UILocalNotification *myUILocalNotification = [narry objectAtIndex:i]; 
    NSDictionary *userInfo = myUILocalNotification.userInfo; 
    NSString *obj = [userInfo objectForKey:@"beginNoti"]; 
    if ([obj isEqualToString @"kLocalNoti "]) { 
        [[UIApplication sharedApplication] cancelLocalNotification:myUILocalNotification]; 
        return true; 
    } 
}

点击提醒
App在前台或者在后台时,即运行时接收到本地推送消息。上面的2种情况的处理基本一致, 不同点只有当运行再后台的时候,会有弹窗提示用户另外一个App有通知,对于本地通知单的处理都是通过*AppDelegate的方法:- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification来处理的。

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification*)notification {
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"接收到本地提醒 in app" message:notification.alertBody delegate:nil  cancelButtonTitle:@"确定" otherButtonTitles:nil];
    [alert show];
    //这里,你就可以通过notification的useinfo,干一些你想做的事情了
    application.applicationIconBadgeNumber -= 1;
}

App没有启动,点击通知。这种情况下,当点击通知时,会启动App,而在App中,开发人员可以通过实现*AppDelegate中的方法:- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions,然后从lauchOptions中获取App启动的原因,若是因为本地通知,则可以App启动时对App做对应的操作。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions  
{  
    NSLog(@"Start App....");  
    ....  
    UILocalNotification *localNotification = [launchOptions objectForKey:UIApplicationLaunchOptionsLocalNotificationKey];  
    if ([self isWelcomeNotification:localNotification]) {  
        NSLog(@"start with welcome notification");  
        [self.mainViewController showOfficeIntroduction];  
    }  
    return YES;  
}  

repeatInterval的循环枚举


typedef NS_OPTIONS(NSUInteger, NSCalendarUnit) {
        NSCalendarUnitEra                = kCFCalendarUnitEra,//一个年代、一个世纪循环一次。
        NSCalendarUnitYear               = kCFCalendarUnitYear,//每年循环一次
        NSCalendarUnitMonth              = kCFCalendarUnitMonth,//每月循环一次
        NSCalendarUnitDay                = kCFCalendarUnitDay,//每天循环一次
        NSCalendarUnitHour               = kCFCalendarUnitHour,//每小时循环一次
        NSCalendarUnitMinute             = kCFCalendarUnitMinute,//每分钟循环一次
        NSCalendarUnitSecond             = kCFCalendarUnitSecond,//每秒循环一次
        NSCalendarUnitWeekday            = kCFCalendarUnitWeekday,//平常日、工作日循环,但是周末也会。(*而不是每周循环,具体和NSCalendarUnitDay有什么区别,暂时没有测试出来,如果哪位知道请告知,感谢)
        NSCalendarUnitWeekdayOrdinal     = kCFCalendarUnitWeekdayOrdinal,
        NSCalendarUnitQuarter            NS_ENUM_AVAILABLE(10_6, 4_0) = kCFCalendarUnitQuarter,//一个季度循环一次
        NSCalendarUnitWeekOfMonth        NS_ENUM_AVAILABLE(10_7, 5_0) = kCFCalendarUnitWeekOfMonth,//每个月的第几周
        NSCalendarUnitWeekOfYear         NS_ENUM_AVAILABLE(10_7, 5_0) = kCFCalendarUnitWeekOfYear,//每年的第几周
        NSCalendarUnitYearForWeekOfYear  NS_ENUM_AVAILABLE(10_7, 5_0) = kCFCalendarUnitYearForWeekOfYear,
        NSCalendarUnitNanosecond         NS_ENUM_AVAILABLE(10_7, 5_0) = (1 << 15),
        NSCalendarUnitCalendar           NS_ENUM_AVAILABLE(10_7, 4_0) = (1 << 20),
        NSCalendarUnitTimeZone           NS_ENUM_AVAILABLE(10_7, 4_0) = (1 << 21),
}

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