联作用，以URL

Question

OK，我是弱智，所以我需要明确的指示，如何在底部的标签点击链接NSURL代码段拨打电话：

- (void)viewDidLoad { 
[super viewDidLoad]; 
lblText.text = agencyName; 
lblPhone.text = phone; 
lblEmail.text = email; 
lblAddress.text = agcaddress; 



//Set the title of the navigation bar 
self.navigationItem.title = @"Agency Info"; 
mapView=[[MKMapView alloc] initWithFrame:self.view.bounds]; 



} 


- (IBAction)callPlaceNumber:(id)sender { 
    NSString *number = [NSString stringWithFormat:@"tel://%@", phone]; 
    number = [number stringByReplacingOccurrencesOfString:@" " 
               withString:@""]; 
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:number]]; 
} 

我试着用IBActions与出路搞乱无济于事。我是否需要在我的头文件中放置一个IBAction，并以某种方式将它链接到标签？第三天编码目标c和I-OS对我来说很简单。

Answer 1

可以实现通过点击UILabel但不推荐:)拨打电话，做的方式是捕获touchEvents并检查触摸事件是从呼叫标签比拨打电话......这样的事情，

不推荐

凡calLabel是一个IBOutlet在你的头文件...

-(void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event { 

    UITouch *touch = [touches anyObject]; 

    if ([touch view] == callLabel) 
    { 
     //Your code here which makes a call... 
    } 
}//In began 

或者，当触摸时结束，

-(void) touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event{ 
    UITouch *touch = [touches anyObject]; 

    if ([touch view] == callLabel) 
    { 
     //Your code here which makes a call... 
    } 
}//At the end 

值得推荐的是...

创建一个UIButton使IBAction为写您的通话逻辑里面......这样的事情，

- (IBAction)callPlaceNumber:(id)sender { 
    NSString *number = [NSString stringWithFormat:@"tel://%@", phoneNumber]; 
    number = [number stringByReplacingOccurrencesOfString:@" " 
             withString:@""]; 
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:number]]; 
} 

希望这将帮助！

编辑

- (IBAction)callPlaceNumber:(id)sender { 
    NSString *number = [NSString stringWithFormat:@"tel://12345678"]; 
    number = [number stringByReplacingOccurrencesOfString:@" " 
             withString:@""]; 
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:number]]; 
}