UIScrollView上的UIImageView上的UIButton（不起作用）

Question

我在UIScrollView的UIImageView上有UIButton 。 但是，按钮不起作用（按钮不响应，并写了button.userInteractionEnabled = YES ）。 为什么？

pagingView = [[InfinitePagingView alloc] initWithFrame:CGRectMake(0.f, 0.f,            self.view.frame.size.width, self.view.frame.size.height - naviBarHeight)];
pagingView.delegate = self;
[self.view addSubview:pagingView];

UIImage *image1 = [UIImage imageNamed:[NSString stringWithFormat:@"1.jpg"]];
page1 = [[UIImageView alloc] initWithImage:image1];
page1.frame = CGRectMake(0, 0, pagingView.frame.size.width * 0.8, pagingView.frame.size.height * 0.8);
page1.userInteractionEnabled = YES;
page1.contentMode = UIViewContentModeScaleAspectFit;

btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(100, 200, 50, 50);
[btn addTarget:self action:@selector(toControl) forControlEvents:UIControlEventTouchUpInside];
[page1 addSubview:btn];
[pagingView addPageView:page1];

Answer 1

尝试使用以下内容：

page1.userInteractionEnabled = NO;
btn.userInteractionEnabled = YES;

还要确保您的按钮没有超出ImageView的框架。 还有一件事，为什么不直接将按钮添加到视图而不是图像视图。

Answer 2

试试这个（已测试 ）：

page1.userInteractionEnabled = YES;
btn.userInteractionEnabled = YES;

Answer 3

试试这个

pagingView = [[InfinitePagingView alloc] initWithFrame:CGRectMake(0.f, 0.f,            self.view.frame.size.width, self.view.frame.size.height - naviBarHeight)];
pagingView.delegate = self;
[self.view addSubview:pagingView];

UIImage *image1 = [UIImage imageNamed:[NSString stringWithFormat:@"1.jpg"]];
page1 = [[UIImageView alloc] initWithImage:image1];
page1.frame = CGRectMake(0, 0, pagingView.frame.size.width * 0.8, pagingView.frame.size.height * 0.8);
page1.userInteractionEnabled = YES;
page1.contentMode = UIViewContentModeScaleAspectFit;
[pagingView addPageView:page1];

btn = [UIButton buttonWithType:UIButtonTypeRoundedRect];
btn.frame = CGRectMake(100, 200, 50, 50);
[btn addTarget:self action:@selector(toControl) forControlEvents:UIControlEventTouchUpInside];
[page1 addSubview:btn];