iphone - 如何将网页导出/保存为图像？

Question

我尝试将网页导出为图像，以便将其分享到一些不允许输入太多单词的社交网络。当我尝试将 UIWebview 的滚动视图层渲染到当前上下文并创建图像时，只需捕捉页面的可见矩形。我该怎么做？非常感谢您！

Answer 1

 NSString *hStr = [web stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"];//get the height
NSString *wtStr = [web stringByEvaluatingJavaScriptFromString:@"document.body.scrollWidth;"];// Get the width
        web.frame=CGRectMake(0, 0, [wtStr floatValue], [hStr floatValue]);
        UIGraphicsBeginImageContext(CGSizeMake(web.frame.size.width,web.frame.size.height));
        CGContextRef ctx = UIGraphicsGetCurrentContext();
        [web.layer renderInContext:ctx];
        UIImage *finalimage = UIGraphicsGetImageFromCurrentImageContext();
        UIGraphicsEndImageContext();

尝试根据页面宽度和高度设置webviews的高度和宽度，然后截图

Answer 2

你可以试试这种方式

UIGraphicsBeginImageContext(CGSizeMake(yourwebview.frame.size.width,yourwebview.frame.size.height));
CGContextRef ctx = UIGraphicsGetCurrentContext();
[yourwebview.layer renderInContext:ctx];
finalimage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();