获取iOS 10网页视图的高度

Question

我需要获得UIWebView的高度。在方法webViewDidFinishLoad我

CGFloat height1 = [[webView stringByEvaluatingJavaScriptFromString: @"document.body.scrollHeight"] floatValue]; 
CGFloat height2 = [[webView stringByEvaluatingJavaScriptFromString: @"document.body.offsetHeight"] floatValue]; 
CGFloat height3 = [[webView stringByEvaluatingJavaScriptFromString: @"document.body.clientHeight"] floatValue]; 
CGFloat height4 = [[webView stringByEvaluatingJavaScriptFromString: @"document.documentElement.clientHeight"] floatValue]; 
CGFloat height5 = [[webView stringByEvaluatingJavaScriptFromString: @"document.documentElement.scrollHeight"] floatValue]; 
CGFloat height6 = [[webView stringByEvaluatingJavaScriptFromString: @"document.documentElement.offsetHeight"] floatValue]; 

height = MAX(height1, MAX(height2, MAX(height3, MAX(height4, MAX(height5, height6))))); 

仍所有值都较小然后真正的价值 我只在iOS的10

Answer 1

有这个问题，从苹果的论坛，您的问题似乎有了解决

你可以使用javascript func的scrollHeight来找到你需要的东西。

NSString *heightStr = [webView stringByEvaluatingJavaScriptFromString:@"document.body.scrollHeight;"]; 

你只需要将其转换一个可用的浮点值：

CGFloat webViewHeight = [heightStr floatValue];