Question

我正在尝试将UIButton添加到UIScrollView。

我添加了UIImageView背景图片*（尺寸：320 * 620）*。然后我将此UIImageView添加到UIScrollView，并且工作正常。

但现在我想在位置添加UIButton：（60,500）; （滚动后会出现的屏幕下方）。

我已尝试使用以下代码，但该按钮已添加到UIView而不是滚动视图上。按钮未显示在顶部。

代码：

- (void)viewDidLoad     
{    
    [super viewDidLoad];
    self.navigationController.navigationBar.hidden = TRUE;

    UIImageView *tempImageView = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"SingleModelVar.png"]];
    self.imageView = tempImageView;
    [tempImageView release];

    imageView.userInteractionEnabled = YES;

    scrollView=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 460)]; //fit to screen

    //scrollView.delaysContentTouches = NO;

    scrollView.contentSize = CGSizeMake(320, imageView.frame.size.height);         //imageView.frame.size.height=620 here
    scrollView.maximumZoomScale = 4.0;
    scrollView.minimumZoomScale = 0.75;
    scrollView.clipsToBounds = YES;
    scrollView.delegate = self;

    //The Problem begins ..........

    btnStartDate=[[UIButton alloc] initWithFrame:CGRectMake(60,500,100,20)];
    [scrollView addSubview:btnStartDate];
    //[self.view addSubview:btnStartDate];

    btnEndDate=[[UIButton alloc] initWithFrame:CGRectMake(60,530,100,20)];
    [scrollView addSubview:btnEndDate];
    //[self.view addSubview:btnEndDate];

    [scrollView addSubview:imageView];
    [[self view] addSubview:scrollView];
}

Answer 1

它不会显示在顶部，因为您在添加imageView之前添加了它们。将[scrollView addSubview:imageView];放在btnStartDate=[[UIButton alloc] initWithFrame:CGRectMake(60,500,100,20)];

之前

将UIButton添加到UIScrollView

1 个答案: