[英]Change image in UIImageView when UIButton is pressed programmatically
[英]How to change image of UIImageView that is inside a UIButton programmatically?
在此問題和解答(由Tim回答)的幫助下,我使用UIImageView和UILabel創建了一個UIButton,現在我想在按鈕單擊事件上更改UIImageView的圖像。 我試過了[sender.imageView setImage:image]
但它不起作用
您可以:
1-在viewController的UIButton內保留對UIImageView的引用
2-子類化UIButton並自己添加UIImageView。
3-添加UIImageView時,在其中添加一個標簽(view.tag),然后從發送方獲取視圖時,您可以
UIView *view = (UIView *)sender;
UIImageView *imageView = [view viewWithTag:123];
//do what you must with the imageView.
標簽可以是任何數字。
編輯
這就是您應該在UIImageView而不是UIButton上設置標簽的方式。 我從這里的蒂姆的答案中復制了這段代碼:
// 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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