将 UIImageView 添加到 UIButton [英] Adding a UIImageView to UIButton

问题描述

我创建了一个 UIScrollView，其中包含多个 UIImageView 实例.SDWebImage 框架用于缓存图像并将它们呈现在 UIImageView 实例中.现在我希望能够点击 UIImageView 的这些实例.

I created a UIScrollView which contains several UIImageView instances. The SDWebImage framework is used in order to cache images and present them in the UIImageView instances. Now I want to be able to click on these instances of UIImageView.

之前我将 UIButtons 添加到 UIScrollView 并为该按钮添加了一个图像.但是知道我无法将 UIImageView 添加到按钮.我应该如何解决这个问题?是否可以选择在此视图上放置 UIButton?我该怎么做?

Previously I added UIButtons to the UIScrollView and added an image to this button. But know I am not able to add a UIImageView to a button. How should I solve this? is it an option to place an UIButton over this view? and how should I do this?

我以前用它来添加可点击的图像(我需要改变它，由于 SDWebImage 框架，所以我不能使用 UIImage imageNamed:forState

I previously used this to add clickable images (I need to change this, due to the SDWebImage framework, so I cannot use UIImage imageNamed:forState

        CGFloat y = i * self.view.frame.size.height/6; 
        UIButton* aButton = [UIButton buttonWithType:UIButtonTypeCustom];
        [aButton setTag:[[idsCol objectAtIndex: i] intValue]];
        aButton.frame = CGRectMake(0, y, self.view.frame.size.width/3, self.view.frame.size.height/6);

        aButton.imageView.contentMode = UIViewContentModeScaleAspectFit;

        [aButton setImage:[UIImage imageNamed:@"image.jpg" forState:UIControlStateNormal];

        [aButton addTarget:self action:@selector(buttonClicked:) forControlEvents:UIControlEventTouchUpInside];
        aButton.adjustsImageWhenHighlighted = NO;
        [scrollView addSubview:aButton];

我目前需要使以下图像视图可点击:

I currently need to make the following imageview clickable:

[testImageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"]
               placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

推荐答案

我对 SDWebImage 不熟悉，但是如果这个框架允许你直接修改按钮的 imageView 属性你会更好关闭:

I'm unfamiliar with SDWebImage, but if this framework would allow you to modify the buttons imageView property directly you'd be better off:

[myButton.imageView setImageWithURL:[NSURL URLWithString:@"http://www.domain.com/path/to/image.jpg"] placeholderImage:[UIImage imageNamed:@"placeholder.png"]];

或者，如果您想坚持使用图像视图，您可以通过向其添加一个简单的点击手势使其可点击":

Alternatively, if you want to stick with using a image view, you can make it "clickable" by adding a simple tap gesture to it:

UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(myMethod:)];
[tap setNumberOfTapsRequired:1];
[tap setNumberOfTouchesRequired:1];
[testImageView setUserInteractionEnabled:YES];
[testImageView addGestureRecognizer:tap];




- (void)myMethod:(UIGestureRecognizer *)sender
{
    NSLog(@"%u",sender.view.tag);
}

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