How Can i repeat my local notification sound repeated until i tap on its “”View" button?

问题

The Notification sound is of 20 sec, but i want to repeat that sound for atleast 60 sec. after that it will snoozed. Here is my precious code :D take a look and please help me...

Code:-

@interface SetAlarmViewController : UIViewController <UITableViewDataSource,UITableViewDelegate,UITextFieldDelegate>{

    IBOutlet UITableView *tableview;
    IBOutlet UIDatePicker *datePicker;
    IBOutlet UITextField *eventText;

    IBOutlet UINavigationBar *titleBar;
    IBOutlet UIButton *setAlarmButton;
}

@property (nonatomic, retain) IBOutlet UITableView *tableview;
@property (nonatomic, retain) IBOutlet UIDatePicker *datePicker;
@property (nonatomic, retain) IBOutlet UITextField *eventText;

@property(nonatomic, retain) IBOutlet UINavigationBar *titleBar;
@property(nonatomic, retain) IBOutlet UIButton *setAlarmButton;
@property(nonatomic) UIReturnKeyType returnKeyType;  

- (IBAction) scheduleAlarm:(id) sender;
- (void)showReminder:(NSString *)text;


@implementation SetAlarmViewController
@synthesize datePicker,tableview, eventText,titleBar,setAlarmButton,returnKeyType;


// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
    eventText.returnKeyType = UIReturnKeyDone;

    datePicker.minimumDate = [NSDate date];
    NSDate *now = [NSDate date];
    [datePicker setDate:now animated:YES];

    eventText.delegate = self;
}

- (void) viewWillAppear:(BOOL)animated {
    [self.tableview reloadData];
}

- (IBAction) scheduleAlarm:(id) sender {
    [eventText resignFirstResponder];
    NSCalendar *calendar = [NSCalendar autoupdatingCurrentCalendar];

    // Get the current date
    NSDate *pickerDate = [self.datePicker date];

    // Break the date up into components
    NSDateComponents *dateComponents = [calendar components:( NSYearCalendarUnit | NSMonthCalendarUnit |  NSDayCalendarUnit ) 
                                                   fromDate:pickerDate];
    NSDateComponents *timeComponents = [calendar components:( NSHourCalendarUnit | NSMinuteCalendarUnit | NSSecondCalendarUnit ) 
                                                   fromDate:pickerDate];
    // Set up the fire time
    NSDateComponents *dateComps = [[NSDateComponents alloc] init];
    [dateComps setDay:[dateComponents day]];
    [dateComps setMonth:[dateComponents month]];
    [dateComps setYear:[dateComponents year]];
    [dateComps setHour:[timeComponents hour]];
    // Notification will fire in one minute
    [dateComps setMinute:[timeComponents minute]];
    [dateComps setSecond:[timeComponents second]];
    NSDate *itemDate = [calendar dateFromComponents:dateComps];
    [dateComps release];

    UILocalNotification *localNotif = [[UILocalNotification alloc] init];
    if (localNotif == nil)
        return;
    localNotif.fireDate = itemDate;
    localNotif.timeZone = [NSTimeZone defaultTimeZone];

    // Notification details
    localNotif.alertBody = [eventText text];

    // Set the action button
    localNotif.alertAction = @"Show me";
    localNotif.repeatInterval = NSDayCalendarUnit;
    localNotif.soundName = @"jet.wav";
    localNotif.applicationIconBadgeNumber = 1;

    // Specify custom data for the notification
    NSDictionary *userDict = [NSDictionary dictionaryWithObject:eventText.text
                                                         forKey:kRemindMeNotificationDataKey];
    localNotif.userInfo = userDict;

    // Schedule the notification
    [[UIApplication sharedApplication] scheduleLocalNotification:localNotif];
    [localNotif release];

    [self.tableview reloadData];
    eventText.text = @"";
}

#pragma mark -
#pragma mark Table view data source

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
    return 1;
}


- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {
    return [[[UIApplication sharedApplication] scheduledLocalNotifications] count];
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    NSArray *notificationArray = [[UIApplication sharedApplication] scheduledLocalNotifications];
    UILocalNotification *notif = [notificationArray objectAtIndex:indexPath.row];
    if(notif)
    {   
        [[UIApplication sharedApplication] cancelLocalNotification:notif];
    }

    [self.tableview reloadData];
}

// Customize the appearance of table view cells.
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {

    static NSString *CellIdentifier = @"Cell";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
    if (cell == nil) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:CellIdentifier] autorelease];
    }

    // Configure the cell...

    NSArray *notificationArray = [[UIApplication sharedApplication] scheduledLocalNotifications];
    UILocalNotification *notif = [notificationArray objectAtIndex:indexPath.row];

    [cell.textLabel setText:notif.alertBody];
    [cell.detailTextLabel setText:[notif.fireDate description]];

    return cell;
}

- (void)viewDidUnload {
    datePicker = nil;
    tableview = nil;
    eventText = nil;
    [super viewDidUnload];

}

#pragma mark -
#pragma mark === Text Field Delegate ===
#pragma mark -

- (BOOL)textFieldShouldReturn:(UITextField *)textField {

    [textField resignFirstResponder];
    return YES;
}


#pragma mark -
#pragma mark === Public Methods ===
#pragma mark -

- (void)showReminder:(NSString *)text {

    UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:@"Reminder" 
                                                        message:text delegate:self
                                              cancelButtonTitle:@"OK"
                                              otherButtonTitles:nil];
    [alertView show];
    [self.tableview reloadData];

    [alertView release];
}


- (void)dealloc {
    [super dealloc];
//  [datePicker release];
//  [tableview release];
//  [eventText release];
}

@end

回答1:

Just schedule multiple local notifications for intervals of the sound's duration until the total time since fireDate is >= 60. If they're ignored, they will go off again, and if the user presses Show Me then you can unschedule the remaining notifications for this event upon app launch.

The only problem left, then, is what happens when they press Close. I think there'd have to be a callback to allow you to do something when the notification is closed.. right? (I can't find one right now)

来源：https://stackoverflow.com/questions/7980714/how-can-i-repeat-my-local-notification-sound-repeated-until-i-tap-on-its-view