如何從視圖的子視圖的視圖的自定義類中調用performSegueWithIdentifier？

Question

我有一個視圖控制器，它有一個使用自定義類的子視圖。 當我從視圖控制器的上下文中執行performSegueWithIdentifier時，它工作正常，但是，如何在子子視圖的上下文中調用performSegueWithIdentifier？

Answer 1

你不能從UIView調用performSegue。 您可以使用協議，使viewController實現它並將其設置為自定義視圖的委托。

CustomView.h

@protocol CustomViewDelegate

-(void)customView:(CustomView *)view performSegueWithIdentifier:(NSString *)identifier;

@end

@property (nonatomic, weak) id<CustomViewDelegate> delegate;

CustomView.m

// This is the event on which you would like to perform the segue
-(void)didClickButton {
     [self.delegate customView:self performSegueWithIdentifier:@"mySegue"];
}

ViewController.m

-(void)viewDidLoad {
    // All you other stuff...

    // Set the delegate
    self.customView.delegate = self;
}

-(void)customView:(CustomView *)view performSegueWithIdentifier:(NSString *)identifier {
    [self performSegueWithIdentifier:identifier];
}

希望這可以幫助。 如果您有疑問，請告訴我