UIWebView 动态内容大小 [英] UIWebView dynamic content size
问题描述
我环顾四周，但没有看到任何快速相关的方法来做到这一点.我试图让我的 UIWebViews 高度是动态的.我有一个 UIWebView，它使用 loadHtmlString 函数加载数据.问题是我从 sqlite 数据库加载数据，每次加载不同长度的不同字符串时，Web 视图自然会获得不同的高度.
现在我需要知道如何使 UIWebView 具有精确的高度，以便在 webView 下加载我的下一个内容.这是我目前所拥有的
I've been looking around and wasnt able to see any swift related ways to do this. I'm trying to get my UIWebViews height to be dynamic. I have a UIWebView that loads data using the loadHtmlString function.The thing is that I am loading the data from an sqlite database, each time I load a different string with different length and naturally the web view obtains different height.
Now I need to know how to make the UIWebView that exact height in order to load my next content right under the webView. This is what I have so far
var jobSkillView = UIWebView(frame: CGRectMake(-5, 480.0, screenWidth, 300.0))
jobSkillView.loadHTMLString("<html><body p style='font-family:arial;font-size:16px;'>" + jobSkills + "</body></html>", baseURL: nil)
jobSkillView.stringByEvaluatingJavaScriptFromString("document.body.innerHTML")
jobSkillView.scrollView.scrollEnabled = true
jobSkillView.scrollView.bounces = true
jobSkillView.sizeToFit()
border.addSubview(jobSkillView)
我在 SO 上发现了类似的内容，但不确定如何将其链接到 UIWebView 的框架:
I found something like this on SO but not sure how to link it to the UIWebView's frame:
func webViewDidFinishLoad(jobSkillView : UIWebView){
// Change the height dynamically of the UIWebView to match the html content
var jobSkillViewFrame: CGRect = jobSkillView.frame
jobSkillViewFrame.size.height = 1
jobSkillView.frame = jobSkillViewFrame
var fittingSize: CGSize = (jobSkillView.sizeThatFits(CGSizeZero))
jobSkillViewFrame.size = fittingSize
// webViewFrame.size.width = 276; Making sure that the webView doesn't get wider than 276 px
jobSkillView.frame = jobSkillViewFrame
var jobSkillViewHeight = jobSkillView.frame.size.height
}
推荐答案
这篇文章已经针对 Swift 5 和WKWebView
所以这是你在那里写的一个非常棒的函数，OP！
这是您的代码的一个更短、更优雅的版本:
So this is a really great function you wrote there, OP!
Here is just a shorter, more elegant version of your code:
// make sure to declare the delegate when creating your webView (add UIWebViewDelegate to class declaration as well)
myWebView.delegate = self
func webViewDidFinishLoad(webView: UIWebView) {
webView.frame.size.height = 1
webView.frame.size = webView.sizeThatFits(CGSize.zero)
}
<小时>
迁移到 WKWebView
1) 导入 WebKit
2) 让你的 ViewController 继承自 WKNavigationDelegate
3) 连接 WKWebView 的委托:webView.navigationDelegate = self
4)实现如下协议功能:
Migrating to WKWebView
1) import WebKit
2) make your ViewController inherit from WKNavigationDelegate
3) hook up the WKWebView’s delegate: webView.navigationDelegate = self
4) implement the following protocol function:
webView(_ webView: WKWebView, didFinish navigation: WKNavigation!)
从 UIWebView 迁移到 WKWebView 后，上述方法似乎不再适用.
您可以做的是将带有 webView.sizeThatFits(CGSize.zero) 的行更改为:
After migrating from UIWebView to WKWebView, above approach doesn’t seem to work anymore.
What you can do instead, is change the line with webView.sizeThatFits(CGSize.zero) to:
webView.frame.size = webView.scrollView.contentSize
WKWebView 的完整代码为:
func webView(_ webView: WKWebView, didFinish navigation: WKNavigation!) {
webView.frame.size.height = 1
webView.frame.size = webView.scrollView.contentSize
}
这篇关于UIWebView 动态内容大小的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
