iphone - Getting data from uiwebview textfield

问题

Am developing an app which load a HTML page into uiwebview - that html file contains text-filed and drop-down list, text-boxes etc..

Here How to get values which user has entered in that text-filed and answers selected from drop-down(picker).

Thanks

回答1:

You can use [UIWebView stringByEvaluatingJavascriptFromString:] method and get the values by executing the javascript.

Example: If your html is:

<html>
  <body>
      <input id="myId" type="text" value="TextValue"/>
  </body>
</html>

Following code can get you the value of the text field:

   NSString* value = [webView stringByEvaluatingJavaScriptFromString:@"document.getElementById('myId').value"];

回答2:

You can either poll a javascript function inside the page (using UIWebView stringByEvaluatingJavascriptFromString:).

Or you could call an objective-c method directly from the page using a little hack: UIWEBVIEW SECRETS - PART3 - HOW TO PROPERLY CALL OBJECTIVEC FROM JAVASCRIPT
(scroll down to the bottom for github-link).

回答3:

If HTML response is this,

<html>
  <body>
      <input id="myId" type="hidden" value="TextValue"/>
  </body>
</html>

So you can access like this in Swift,

  var id:String = IBwebView.stringByEvaluatingJavaScriptFromString("document.getElementById('myId').value")!
  println(id)

来源：https://stackoverflow.com/questions/5908775/iphone-getting-data-from-uiwebview-textfield

标签

javascript

html

objective-c

ios

uiwebview

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