獲取iOS 10網頁視圖的高度

Question

我需要獲得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))))); 

仍所有值都較小然後真正的價值 我只在iOS的10

Answer 1

有這個問題，從蘋果的論壇，您的問題似乎有了解決

你可以使用javascript func的scrollHeight來找到你需要的東西。

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

你只需要將其轉換一個可用的浮點值：

CGFloat webViewHeight = [heightStr floatValue];