ios – 从UIView使用presentViewController

我正在为我的iOS应用程序创建一个标题栏，我正在使用UIView。我唯一遇到的问题是“主页按钮”。当按住主页按钮时，需要转到主页，即ViewController。

但是，它看起来不像[self presentViewController：vc animated：NO completion：NULL];为UIView工作。

如何解决这个问题？

- (void) createTitlebar {

    CGRect titleBarFrame = CGRectMake(0,320,55);

    //Create the home button on the top right of the page. When clicked,it will navigate to the home page of the application
    homeButton = [UIButton buttonWithType:UIButtonTypeCustom];
    homeButton.frame = CGRectMake(275,10,40,40);
    [homeButton setTag:1];
    [homeButton setImage:[UIImage imageNamed:@"homeIcon.png"] forState:UIControlStateNormal];
    [homeButton addTarget:self action:@selector(homeButtonPressed:) forControlEvents:UIControlEventTouchUpInside];
    [self addSubview:homeButton];
}

- (IBAction)homeButtonPressed:(id)sender{

    //Transition to the submit button page
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    ViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"ViewController"];
    [vc setModalPresentationStyle:UIModalPresentationFullScreen];
    [self presentViewController:vc animated:NO completion:NULL];
}

解决方法

只有UIViewController可以呈现另一个视图控制器，所以如果你需要从视图中显示一个viewcontroller，有几种方式，其中之一就是这样：

做一个视图控制器，您的父视图位于该视图的代表处

ParentView *view = [ParentView new];
...
view.delegate = self;

那么，在ParentView的内部调用方法的那个委托

- (IBAction)homeButtonPressed:(id)sender {
    [self.delegate buttonPressed];
}

然后在你的VC实现中

-(void)buttonPressed {
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    ViewController *vc = [storyboard instantiateViewControllerWithIdentifier:@"ViewController"];
    [vc setModalPresentationStyle:UIModalPresentationFullScreen];
    [self presentViewController:vc animated:NO completion:NULL];
}

如果你需要保持这个代码在UIView中，并避免授权，你可以做一个这样的技巧(个人我不喜欢它，但它应该工作)

-(void)buttonPressed{
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
    ViewController *vc = [storyboard      instantiateViewControllerWithIdentifier:@"ViewController"];
    [vc setModalPresentationStyle:UIModalPresentationFullScreen];
    [(UIViewController*)self.nextResonder presentViewController:vc animated:NO completion:NULL];
}