iOS中添加/删除本地通知（闹钟）的方法

iOS系统默认可以向程序中增加最多64个本地通知，首先要判断机器是不是支持本地通知，然后在为每一个通知指定一个标识，用于取消时。  

//添加本地通知的方法
/*
 message:显示的内容
 firedate:闹钟的时间
 alarmKey:闹钟的ID
 */
+(void)addLocalNotificationWithMessage:(NSString *)message
 FireDate:(NSDate *) fireDate
 AlarmKey:(NSString *)alarmKey
{
 UILocalNotification *notification=[[UILocalNotification alloc] init];
 if (notification!=nil) {
 
 notification.fireDate=fireDate;
 
 notification.timeZone=[NSTimeZone defaultTimeZone];
 notification.soundName= UILocalNotificationDefaultSoundName;
 
 notification.alertBody=message;
 notification.hasAction = NO;
 notification.userInfo=[[NSDictionary alloc] initWithObjectsAndKeys:alarmKey,@"AlarmKey", nil];
 [[UIApplication sharedApplication] scheduleLocalNotification:notification];
 }
 [notification release];
}

 

/*
 删除本地通知
 */
+(void)deleteLocalNotification:(NSString *) alarmKey
{
 NSArray * allLocalNotification=[[UIApplication sharedApplication] scheduledLocalNotifications];
 
 for (UILocalNotification * localNotification in allLocalNotification) {
 NSString * alarmValue=[localNotification.userInfo objectForKey:@"AlarmKey"];
 if ([alarmKey isEqualToString:alarmValue]) {
 [[UIApplication sharedApplication] cancelLocalNotification:localNotification];
 }
 }
}