UILocalNotification不触发 [英] UILocalNotification not firing

问题描述

我非常是新的Cocoa Touch和Objective-C，但我已经得到了相当大的点，我正在试验UIKit。我有一个动作链接到一个按钮，更改标签并触发UILocalNotification，这是动作方法：

   - ）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，但它只是没有触发。

UPDATE

这是App Delegate初始化，包含<$ p code> UILocalNotification ：

  @interface LearnAppDelegate：NSObject< UIApplicationDelegate& {
 UIButton * _ModifyLabelButton; 
 UILabel * _LabelOne; 
 UILocalNotification * _NotifyOne; 
} 
 
 @property（nonatomic，retain）IBOutlet UILocalNotification * NotifyOne; 
  

解决方案

如果你希望没有时间表。当你按下一个按钮），然后使用 UIAlertView 或添加 [application presentLocalNotificationNow：self.NotifyOne]; 代码。

UPDATE

删除IBOutlet并同时声明UILocalNotification名称。例如：

  @interface LearnAppDelegate：NSObject< UIApplicationDelegate> {
 UIButton * _ModifyLabelButton; 
 UILabel * _LabelOne; 
 UILocalNotification * NotifyOne; 
} 
 
 @property（nonatomic，retain）UILocalNotification * NotifyOne; 
  

请记住在实施中 synthesize m）文件。

也可尝试：

   - 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; 
} 
} 
  

I am very new to Cocoa Touch and Objective-C but I've gotten the pretty big points down and I am experimenting with the UIKit. I have a action linked to a button that changes a label and fires a UILocalNotification and this is the action method:

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

There are no errors or warnings, but it's just not firing. Is there anything wrong with my action method?

UPDATE
Here is the App Delegate initialization that contains the UILocalNotification:

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

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

解决方案

If you are wanting it show without a schedule (eg. when you press a button) then either use UIAlertView or add [application presentLocalNotificationNow:self.NotifyOne]; to your code.

UPDATE

Remove IBOutlet and make both declarations of UILocalNotification the same name. For example:

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

@property (nonatomic, retain) UILocalNotification *NotifyOne;

Remember to synthesize in your implementation (.m) file.

Also try this instead:

- (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;
    }
}

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