如何將網頁導出/保存爲圖像？

Question

我嘗試將網頁導出爲圖像，以便將其分享給某些不允許輸入太多單詞的社交網絡。當我嘗試將UIWebview的scrollview圖層渲染到當前上下文並創建圖像時，只需將該頁面的可見矩形對齊即可。我該怎麼做？非常感謝！

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(); 

嘗試設置根據頁面的網頁視圖的高度和寬度，寬度和高度，然後採取截圖

Answer 2

，你可以嘗試這樣

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