在 WKWebView 中填充输入文本字段 [英] Populating input text field in WKWebView
问题描述
我在由特定视图控制器控制的 WKWebView 中加载了以下 html 页面.在视图加载后，我希望应用程序自动填充页面中的输入文本字段.
I have loaded the following html page in a WKWebView controlled by a specific view controller. After the view is loaded I would like that the App automatically populates an input text field in the page.
在此示例中，我希望应用在下面表单的结果"文本字段中写入Hello Result".
In this example I would like the app to write "Hello Result" in the "Result" text field of the form below.
<html>
<head>
<title>Test Page</title>
</head>
<body>
<form>
QR Result <input type="text" name="Result" width="20">
</form>
</body>
</html>
这是我在视图控制器中加载HTML页面作为文件的代码:
This is the code where I load the HTML page as file within the view controller:
var htmlFile = NSBundle.mainBundle().pathForResource("apptest", ofType: "html")
var contents = NSString(contentsOfFile: htmlFile!, encoding: NSUTF8StringEncoding, error: nil)
self.webView?.loadHTMLString(contents!, baseURL: nil)
我如何加载视图(文件或 URL)并不重要.我希望能够做的是在加载视图之后的某个时间填充该字段.
It doesn't matter how I load the view (file or URL). What I want to be able to do is to fill the field at some point after loading the view.
推荐答案
Uttam Sinha 的答案对应的 wkwebview/swift 是.
The wkwebview/swift equivalent for Uttam Sinha's answer would be.
webview.evaluateJavaScript("document.getElementById('result').value = 'Hello Result';", completionHandler: { (res, error) -> Void in
//Here you can check for results if needed (res) or whether the execution was successful (error)
})
WKWebView 的版本更好，因为它会在执行 JS 出现问题时提供错误反馈.
The WKWebView's version is nicer since it will provide error feedback in case of problems executing your JS.
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