UILocalNotification本地通知的使用方法

UILocalNotification一般做为定时器使用，可以定时提醒，定时唤醒。

1.对象的创建

    UILocalNotification *notification = [[UILocalNotification alloc] init];
    NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
    NSString *noticeDate = @"2012-07-30 12:00:00";
    formatter.dateFormat = @"yyyy-MM-dd HH:mm";
    //设置触发时间
    notification.fireDate = [formatter dateFromString:noticeDate];
    //触发频率，0表示只有一次，频率不能为自定义的
    notification.repeatInterval = 0;
    notification.repeatInterval = kCFCalendarUnitDay;
    notification.repeatInterval = kCFCalendarUnitWeek;
    //用户信息，为字典类型，内容可以自己设定，这里存放了唯一的key做为标记
    NSDictionary *dict = [[NSDictionary alloc] dictionaryWithObjectsAndKeys:
                          [NSString stringWithFormat:@"%d", noticeInfo.notifyID],KEY,nil];
    [notification setUserInfo:dict];
    //提醒内容
    notification.alertBody = @"HELLO";
    //提醒铃音必须为默认的或声音文件
    notification.soundName = UILocalNotificationDefaultSoundName;//@"ping.caf";
    //添加到系统管理队列中
    [[UIApplication sharedApplication] scheduleLocalNotification:notification];

2.对象的管理

//获取当前所有提醒,内容为UILocalNotification数组
   [[UIApplication sharedApplication] scheduledLocalNotifications];
  //添加提醒
  UIApplication *app = [UIApplication sharedApplication];
  [app scheduleLocalNotification:notification];
  //取消提醒,遍历所有提醒，从中找到需要取消的那个
      NSArray *myArray=[[UIApplication sharedApplication] scheduledLocalNotifications];
    for (UILocalNotification *myUILocalNotification in myArray) {
        if ([[[myUILocalNotification userInfo] objectForKey:KEY] intValue] == value) {
            [[UIApplication sharedApplication] cancelLocalNotification:myUILocalNotification];
            return;
        }
    }
  //取消所有提醒
  UIApplication *app = [UIApplication sharedApplication];
  [app cancelAllLocalNotifications];

3.提醒的处理，提醒触发时会回调appdelegate的如下方法

- (void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification
{
    //本地通知
    NSLog(@"notification--->>%@",notification);
    NSString *alertBody=notification.alertBody;
    UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"定时提醒" message:alertBody delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
    [alert show];
}