問題描述

我想向 UIWebView 添加一個標(biāo)題視圖，類似于 MobileSafari 中的地址/搜索欄和 Sophia Teutschler 的優(yōu)秀 Articles.app.更準(zhǔn)確地說，我想在 UIWebView 上方創(chuàng)建一個拉動固定方向"視圖，就像在文章中一樣.文章確實使用了 UIWebView，所以這似乎是可能的.如 這篇文章?顯然，我確實需要滾動事件以使拉動以固定方向"行為相應(yīng).

I'd like to add a header view to an UIWebView similar to the address/search bar in MobileSafari and the excellent Articles.app by Sophia Teutschler. More precisely, I'd like to create a "pull to fix orientation" view above a UIWebView, just like in Articles. Articles does use a UIWebView, so it seems to be possible. Is there a way to accomplish this without having to embed the UIWebView into a UIScrollView and updating its size all the time, as described in this article? Apparently, I do need the scrolling events to have the "pull to fix orientation" behave accordingly.

推薦答案

經(jīng)過幾次嘗試，我決定采用這個解決方案:

After several attemps, I've decided to go with this solution:

基本上我剛剛將我的標(biāo)題 UIView 添加為 webview.scrollview 子視圖.

Basically I've just added my header UIView as a webview.scrollview subview.

為避免標(biāo)題與瀏覽器視圖重疊:

To avoid having the header overlap the browser view:

• 循環(huán)瀏覽所有 [webview.scrollView 子視圖]
• 尋找最大的，應(yīng)該包含瀏覽器(其他用于陰影和線條)

• 改變它的起源.y

• cycle through all [webview.scrollView subviews]
• look for the biggest, wich should contains the browser (the others are for shadows and lines)

• change its origin.y

代碼如下:

CGRect browserCanvas = web.bounds;
for(int i=0; i< [[web.scrollView subviews] count]; i++)
{
  UIView* subview = [[web.scrollView subviews] objectAtIndex:i];
  CGRect f = subview.frame;
  NSLog(@"sub %d -> x:%.0f, y:%.0f, w:%.0f, h:%.0f", i, f.origin.x, f.origin.y, f.size.width, f.size.height);

  if(f.origin.x == browserCanvas.origin.x && 
     f.origin.y == browserCanvas.origin.y && 
     f.size.width == browserCanvas.size.width && 
     f.size.height == browserCanvas.size.height)
     {
         f.origin.y = header.frame.size.height;
         subview.frame = f;
     }
}

if(![header superview])
{
  [web.scrollView addSubview:header];
  [web.scrollView bringSubviewToFront:header];
}

這篇關(guān)于將標(biāo)題視圖添加到類似于 Safari 和文章的 UIWebView的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網(wǎng)！