UILocalNotification没有开火

Question

我是很新的,以可可触摸和Objective-C,但我得到了下来漂亮的大点,我与UIKit的试验.我有一个链接到一个按钮的动作,该按钮可以更改标签并触发UILocalNotification,这是动作方法:

- (IBAction)changeLabel:(id)sender {
    self.LabelOne.text = @"WHAT UPPP!";
    self.NotifyOne.alertBody = @"Testtttttt";
    self.NotifyOne.alertAction = @"Got It.";
    self.NotifyOne.fireDate = nil;
}

没有错误或警告,但它只是没有开火.我的行动方法有什么问题吗？

UPDATE
这是App Delegate初始化,包含UILocalNotification:

@interface LearnAppDelegate : NSObject <UIApplicationDelegate> {
    UIButton *_ModifyLabelButton;
    UILabel *_LabelOne;
    UILocalNotification *_NotifyOne;
}

@property (nonatomic, retain) IBOutlet UILocalNotification *NotifyOne;

Answer 1

如果您希望它在没有时间表的情况下显示(例如按下按钮时),则使用UIAlertView或添加[application presentLocalNotificationNow:self.NotifyOne];到您的代码中.

UPDATE

删除IBOutlet并使UILocalNotification的两个声明都具有相同的名称.例如:

@interface LearnAppDelegate : NSObject <UIApplicationDelegate> {
    UIButton *_ModifyLabelButton;
    UILabel *_LabelOne;
    UILocalNotification *NotifyOne;
}

@property (nonatomic, retain) UILocalNotification *NotifyOne;

请记住synthesize在您的实现(.m)文件中.

也试试这个:

- (IBAction)changeLabel:(id)sender {
    self.LabelOne.text = @"WHAT UPPP!";
    NotifyOne = [[UILocalNotification alloc] init];
    if (NotifyOne) {
        NotifyOne.alertBody = @"Testtttttt";
        NotifyOne.alertAction = NSLocalizedString(@"Got It.", nil);
        NotifyOne.fireDate = nil;
        NotifyOne.soundName = nil;
        NotifyOne.applicationIconBadgeNumber = 0;
        [application presentLocalNotificationNow:NotifyOne];
        [NotifyOne release];
        NotifyOne = nil;
    }
}