iphone - 如何在 iPhone 中查找 Scroll View 或 WebView 内容的高度

Question

这个问题在这里已经有了答案:





How to determine the content size of a UIWebView?

(15 个回答)


8年前关闭。

 UIScrollView *ScrollView=[[UIScrollView alloc]initWithFrame:CGRectMake(0,0,320,600)];
 ScrollView.autoresizingMask = UIViewAutoresizingFlexibleWidth ;
 ScrollView.autoresizesSubviews = YES;

[ScrollView setContentSize:CGSizeMake(320, 2500)];

ScrollView.scrollEnabled = YES;

ScrollView.directionalLockEnabled = YES;

ScrollView.showsVerticalScrollIndicator = NO;

ScrollView.showsHorizontalScrollIndicator = NO;

ScrollView.autoresizesSubviews = YES;
ScrollView.backgroundColor=[UIColor whiteColor];
[self.view addSubview:ScrollView];

  UIwebview *webView = [[UIWebView alloc]initWithFrame:CGRectMake(10,30,310,1500)];
        webView.autoresizingMask = (UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight) ;
        webView.autoresizesSubviews = YES;

        NSLog(@"vlaue od v is %@",webView);

        webView.scrollView.scrollEnabled = NO;
        webView.scrollView.bounces = NO;

        //make the background transparent
        [webView setBackgroundColor:[UIColor clearColor]];

        //pass the string to the webview

        [webView loadHTMLString:[html description] baseURL:nil];
        NSLog(@"web view is %f",webView.scrollView.contentSize.width);
        [webView sizeThatFits:CGSizeZero];
        NSLog(@"web view is %@",webView);

        //add it to the subview
        NSLog(@"height: %d", [[webView stringByEvaluatingJavaScriptFromString:@"document.body.offsetHeight"] intValue]);

    // CGFloat contentHeight = webView.scrollView.contentSize.height;
    //  ScrollView.contentSize = webView.scrollView.contentSize.frame.size;
   //     NSLog(@"scroll size is %d",ScrollView.contentSize);

     //   [UIScrollView setNeedsDisplay];

        [ScrollView addSubview:webView];

      NSLog(@"size is %f",ScrollView.contentSize.height);

我是这个领域的初学者。我已经应用了所有这些东西，我想在 ScrollView 上添加 webview 数据然后 ScrollView 上的内容长度像我定义的 2500 高度然后覆盖 1000,1500

Answer 1

您可以使用以下方法找到 ScrollView 高度

- (void)webViewDidFinishLoad:(UIWebView *)webView {
    int contentHeight = myWebView.scrollView.contentSize.height;
  Nslog(@"%d",contentHeight);
}