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[英]Change image in UIImageView when UIButton is pressed programmatically
[英]How to change image of UIImageView that is inside a UIButton programmatically?
在此问题和解答(由Tim回答)的帮助下,我使用UIImageView和UILabel创建了一个UIButton,现在我想在按钮单击事件上更改UIImageView的图像。 我试过了[sender.imageView setImage:image]
但它不起作用
您可以:
1-在viewController的UIButton内保留对UIImageView的引用
2-子类化UIButton并自己添加UIImageView。
3-添加UIImageView时,在其中添加一个标签(view.tag),然后从发送方获取视图时,您可以
UIView *view = (UIView *)sender;
UIImageView *imageView = [view viewWithTag:123];
//do what you must with the imageView.
标签可以是任何数字。
编辑
这就是您应该在UIImageView而不是UIButton上设置标签的方式。 我从这里的蒂姆的答案中复制了这段代码:
// Create the button
UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
// Now load the image and create the image view
UIImage *image = [UIImage imageNamed:@"yourImage.png"];
UIImageView *imageView = [[UIImageView alloc] initWithFrame:CGRectMake(/*frame*/)];
[imageView setImage:image];
// Create the label and set its text
UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(/*frame*/)];
[label setText:@"Your title"];
// Set a tag on the UIImageView so you can get it later
imageView.tag = 123;
// Put it all together
[button addSubview:label];
[button addSubview:imageView];
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