在應(yīng)用中有的時候需要做一個類似于鬧鐘提醒的功能,在每周的特定的幾天中,在固定時間進行提醒。比如每周一到周五下午六點,需要吃藥的時間就彈窗提醒:快去吃藥!不要放棄治療!
本地固定時間提醒,需要用到 UILocalNotification
如果只是添加一次,并且設(shè)置提醒的周期為NSCalendarUnitWeekOfYear ,那么就是每周只提醒一次。所以如果要達到每周固定星期幾提醒則需要添加提醒天的次數(shù),比如周一到周五提醒那么就需要添加五次,每個提醒的間隔都為一個星期。這樣就可以做到每周固定星期提醒了。
for(id day in _weekArr) {// _weekArr 為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]];// 在過去的某個星期內(nèi)添加需要的本地提醒。并且設(shè)置提醒間隔為NSCalendarUnitWeekOfYear,如果添加在未來,那么提醒不會發(fā)生。
beginLocalNotification.alertBody = @"該吃藥啦!";
beginLocalNotification.soundName = @"ping.caf";
beginLocalNotification.timeZone = [NSTimeZone defaultTimeZone];
beginLocalNotification.alertAction = @"不要忘記吃藥哦!";
beginLocalNotification.repeatInterval = NSCalendarUnitWeekOfYear;// 每周循環(huán)提醒
//按照規(guī)定的時候觸發(fā)
[[UIApplication sharedApplication] scheduleLocalNotification:beginLocalNotification];
//立即觸發(fā)一個通知
//[[UIApplication sharedApplication] presentLocalNotificationNow: beginLocalNotification];
}
取消提醒比較簡單,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;
}
}
點擊提醒
App在前臺或者在后臺時,即運行時接收到本地推送消息。上面的2種情況的處理基本一致, 不同點只有當(dāng)運行再后臺的時候,會有彈窗提示用戶另外一個App有通知,對于本地通知單的處理都是通過*AppDelegate的方法:- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification來處理的。
- (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:@"確定" otherButtonTitles:nil];
[alert show];
//這里,你就可以通過notification的useinfo,干一些你想做的事情了
application.applicationIconBadgeNumber -= 1;
}
App沒有啟動,點擊通知。這種情況下,當(dāng)點擊通知時,會啟動App,而在App中,開發(fā)人員可以通過實現(xiàn)*AppDelegate中的方法:- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions,然后從lauchOptions中獲取App啟動的原因,若是因為本地通知,則可以App啟動時對App做對應(yīng)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的循環(huán)枚舉
typedef NS_OPTIONS(NSUInteger, NSCalendarUnit) {
NSCalendarUnitEra = kCFCalendarUnitEra,//一個年代、一個世紀(jì)循環(huán)一次。
NSCalendarUnitYear = kCFCalendarUnitYear,//每年循環(huán)一次
NSCalendarUnitMonth = kCFCalendarUnitMonth,//每月循環(huán)一次
NSCalendarUnitDay = kCFCalendarUnitDay,//每天循環(huán)一次
NSCalendarUnitHour = kCFCalendarUnitHour,//每小時循環(huán)一次
NSCalendarUnitMinute = kCFCalendarUnitMinute,//每分鐘循環(huán)一次
NSCalendarUnitSecond = kCFCalendarUnitSecond,//每秒循環(huán)一次
NSCalendarUnitWeekday = kCFCalendarUnitWeekday,//平常日、工作日循環(huán),但是周末也會。(*而不是每周循環(huán),具體和NSCalendarUnitDay有什么區(qū)別,暫時沒有測試出來,如果哪位知道請告知,感謝)
NSCalendarUnitWeekdayOrdinal = kCFCalendarUnitWeekdayOrdinal,
NSCalendarUnitQuarter NS_ENUM_AVAILABLE(10_6, 4_0) = kCFCalendarUnitQuarter,//一個季度循環(huán)一次
NSCalendarUnitWeekOfMonth NS_ENUM_AVAILABLE(10_7, 5_0) = kCFCalendarUnitWeekOfMonth,//每個月的第幾周
NSCalendarUnitWeekOfYear NS_ENUM_AVAILABLE(10_7, 5_0) = kCFCalendarUnitWeekOfYear,//每年的第幾周
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),
}