xcode 如何显示来自 URL 的图像并在点击 UIButton 时显示它？
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/8118151/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
提示：将鼠标放在中文语句上可以显示对应的英文。显示中英文
时间：2020-09-14 22:25:08 来源:igfitidea点击:
How to display image from an URL and display it on tap of a UIButton?
提问by raptor85
I want to know how to display image from URL (which is in xml file) on tap of button.
我想知道如何通过点击按钮显示来自 URL（在 xml 文件中）的图像。
回答by Minakshi
UIButton *myButton = [UIButton buttonWithType:UIButtonTypeRoundedRect];
myButton.frame = CGRectMake(20, 20, 200, 44); // position in the parent view and set the size of the button
[myButton setTitle:@"Click Me!" forState:UIControlStateNormal];
// add targets and actions
[myButton addTarget:self action:@selector(buttonClicked) forControlEvents:UIControlEventTouchUpInside];
// add to a view
[superView addSubview:myButton];
And function after tapping button
和点击按钮后的功能
-(void)buttonClicked{
//urlString should be your image url which you want to access
NSURL *url = [[NSURL alloc] initWithString:urlString ];
NSURLRequest *urlRequest = [NSURLRequest requestWithURL:url];
NSData *urlData = [NSURLConnection sendSynchronousRequest:urlRequest returningResponse:&response error:nil];
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:url]];
}
Use image where you want to display.........
在要显示的地方使用图像........
回答by mandeep-dhiman
UIImage *pImage=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString:imageURL]]];;
[imageView setImage:pImage];
