Question

我的名字叫HomeViewController，在HomeViewController里面我正在添加PageViewController（即APPChildViewController）

这是我的代码：

HomeViewController.h:

@interface HomeViewController : UIViewController<UIPageViewControllerDataSource,UIPageViewControllerDelegate>{
    NSUInteger Pageindex;
    APPChildViewController *childViewController;
}

@property (strong, nonatomic) UIPageViewController *pageController;

HomeViewController.m:

- (void)viewDidLoad
{
    APPChildViewController *initialViewController = [self viewControllerAtIndex:0];
    NSArray *viewControllers = [NSArray arrayWithObject:initialViewController];

    [self.pageController setViewControllers:viewControllers direction:UIPageViewControllerNavigationDirectionForward animated:NO completion:nil];
    self.pageController.delegate = self;
    [self addChildViewController:self.pageController];
    [[self view] addSubview:[self.pageController view]];
    [self.pageController didMoveToParentViewController:self];

    [self OnLoad]; //Method on APPChildViewController class
}

APPChildViewController:

-(void)OnLoad{

        button = [UIButton buttonWithType:UIButtonTypeCustom];
        button.frame = CGRectMake(20, 20, 130,130);
     // [button setTitleEdgeInsets:UIEdgeInsetsMake(20, 30, 00, 15)];
        [button addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
        [self.view addSubview:button];

}

在我的PageViewController（即APPChildViewController）中编写此代码后，我无法在APPChildViewController课程中看到按钮。

我在哪里做错了？请提前帮助和致谢。

Answer 1

您是否尝试为按钮或至少背景颜色添加标题？：）

Answer 2

由于OnLoad是APPChildViewController的一种方法，您应该使用[initialViewController OnLoad]

Answer 3

你已经调用了HomeViewController的OnLoad方法而不是APPChildViewController - 你需要将方法调用更改为[initialViewController OnLoad]

无法在视图上添加UIButton

3 个答案: