将数据从一个视图控制器传递到另一个 [英] Passing data from one viewcontroller to another

问题描述

我子类化了两个视图控制器.

I subclassed two view controllers.

第一个应该传递数据，一个 NSUrl 对象到第二个.

The first one is supposed to pass data, a NSUrl object to the second one.

.m 第一个:

NSURL *temp = [NSURL URLWithString:@"http://example.com"];

UIViewController *presentationsFullScreen_ViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PresentationsFullScreen_ViewController"];

presentationsFullScreen_ViewController.urlToUse = temp;

.h 第二个:

#import <UIKit/UIKit.h>

@interface PresentationsFullScreen_ViewController : UIViewController {


    NSURL *urlToUse;


}



@property (nonatomic,retain) NSURL *urlToUse;

它显然不工作也不编译，本质上告诉我我没有继承它并且在 UIViewController 上找不到属性 urlToUse.

It is obviously not working and not compiling,telling me essentially that I didn't subclass it and that the property urlToUse is not found on UIViewController.

我如何正确地进行子类化?

How do I subclass correctly?

谢谢！

推荐答案

正确的代码

 PresentationsFullScreen_ViewController *presentationsFullScreen_ViewController = [self.storyboard instantiateViewControllerWithIdentifier:@"PresentationsFullScreen_ViewController"];
presentationsFullScreen_ViewController.urlToUse = temp;

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