ios - 如何从 View Controller 的 subview 的自定义类中调用 performSegueWithIdentifier？

Question

我有一个 View Controller ，它有一个使用自定义类的 subview 。当我从 View Controller 的上下文中执行 performSegueWithIdentifier 时，它工作正常，但是，如何从子 subview 的上下文中调用 performSegueWithIdentifier？

Answer 1

您不能从 UIView 调用 performSegue .您可以使用协议(protocol)，让 viewController 实现它并将其设置为自定义 View 的委托(delegate)。

自定义 View .h

@protocol CustomViewDelegate

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

@end

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

自定义 View .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];
}

希望这可以帮助。如果您有任何问题，请告诉我