ios - iOS 闹钟

Question

我尝试在 Xcode 4.6.3 - http://vimeo.com/29824336 下重写以下教程

但我有一个问题，在 24:00 左右我的代码没有发出警报:

-(void) scheduleLocalNotificationWithDate:(NSDate *)fireDate
{
    UILocalNotification *notification = [[UILocalNotification alloc] init];

    notification.fireDate = fireDate;
    notification.alertBody = @"Time to wake up!";
    notification.soundName = @"SNSD-Oh.caf";
    NSLog(@"Ring Ring Ring!");

    [[UIApplication sharedApplication] scheduleLocalNotification: notification];
}

- (IBAction) alarmSetButtonTapped:(id)sender
{    
    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
    dateFormatter.timeZone = [NSTimeZone defaultTimeZone];
    dateFormatter.timeStyle = NSDateFormatterShortStyle;
    dateFormatter.dateStyle = NSDateFormatterShortStyle;

    NSString *dateTimeString = [dateFormatter stringFromDate: dateTimePicker.date];
    NSLog(@"Alarm Set Button tapped: %@", dateTimeString);

    [self scheduleLocalNotificationWithDate: dateTimePicker.date];
}

我做错什么了？

Answer 1

通知触发时，您的应用不得在前台运行。

如果要在前台播放声音，可以使用 UIAlertView 的组合和“AvAudioPlayer”。

您可以在
-(void)application:(UIApplication *)application didReceiveLocalNotification:(UILocalNotification *)notification AppDelegate.m 的委托(delegate)方法.

欢迎进一步询问。