Question

在swift中是否有代码用于停用/激活WebView上按钮的触摸点击？

Answer 1

如果您想要这样做，可以激活/停用userInteraction：

SELECT * FROM customer
WHERE id IN (
    SELECT DISTINCT L1.customer_id AS id
    FROM payment_log L1
    LEFT JOIN payment_log L2 ON L1.customer_id = L2.customer_id
    WHERE
        L1.payment_date < '2016-03-22'
    AND L2.payment_date > '2016-03-22' AND L2.payment_type_id = 3
)

Answer 2

只需激活/停用您的按钮即可使用委托方法：

webViewDidFinishLoad(_ webView: UIWebView)

func webViewDidFinishLoad(webView: UIWebView) {
        let js = "document.getElementById('yourButton').disabled = true;);"
        self.webView.stringByEvaluatingJavaScriptFromString(js)
}

但是，如果你想与触摸互动添加一些假设你的HTML代码：

<a class="yourButton" href="inapp://capture">Button Text</a>

使用UIWebView委托方法：

webView(_:shouldStartLoadWithRequest:navigationType:) 你可以这样做：

func webView(WebViewNews: UIWebView!, shouldStartLoadWithRequest request: NSURLRequest!, navigationType: UIWebViewNavigationType) -> Bool {

if request.URL.scheme == "inapp" {
      if request.URL.host == "capture" {
         // do capture action and do whatever you want
      }  
      return false
   }  
   return true
}

Answer 3

1）如果要激活/停用html按钮，则必须使用方法

>:t transform :: (Transformable a a', Transformable b b') => Either a b -> Either a' b'

<interactive>:1:1: Warning:
    Overlapping instances for Transformable
                                (Either a1 b1) (Either a'1 b'1)
      arising from a use of `transform'
    Matching instances:
      instance [overlappable] (Transformable l l', Transformable r r') =>
                              Transformable (Either l r) (Either l' r')
        -- Defined at test6.hs:9:31
      instance [overlap ok] Transformable a a -- Defined at test6.hs:6:27
    (The choice depends on the instantiation of `a1, b1, a'1, b'1'
     To pick the first instance above, use IncoherentInstances
     when compiling the other instance declarations)
    In the expression:
        transform ::
          (Transformable a a', Transformable b b') =>
          Either a b -> Either a' b'

示例

stringByEvaluatingJavaScriptFromString

通过此方法，您可以访问html按钮，并可以通过webview委托方法激活/取消激活。

2）如果您的按钮是原生按钮，那么您可以这样做 userInteractionEnabled属性

示例

func webView(WebViewNews: UIWebView!, shouldStartLoadWithRequest request: NSURLRequest!, navigationType: UIWebViewNavigationType) -> Bool { let result = webView.stringByEvaluatingJavaScriptFromString("document.getElementById('btnname').disabled = true;") }

Answer 4

您可以执行javascript以从webview中禁用该按钮 - stringByEvaluatingJavaScriptFromString:

self.webView.stringByEvaluatingJavaScriptFromString("document.getElementById('myBtn').disabled = true;")

iOS - 如何使用WebView启用用户交互

4 个答案: