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),
}