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Editorial Team
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Asked: 2026-06-15T10:45:55+00:00

I am using a cordova webview to load an html file that has a

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I am using a cordova webview to load an html file that has a button that triggers shouldStartLoad event on click using js.

All is working fine excepts when no internet connection that when same button is pressed, shouldStartLoad event is not fired. I need to intercept that trigger in order to show a native alert but seems that nothing happens, if internet connection is available again, event is also fired again when click.
Console is not showing any info. How to intercept this state on cordova webview when no connection?

- (BOOL)webView:(UIWebView*)theWebView shouldStartLoadWithRequest:(NSURLRequest*)request 
navigationType:(UIWebViewNavigationType)navigationType;
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1 Answer

  1. Editorial Team

    If there is no internet connection and your pressing button to fire some event, check the UIWebViewDelegate method called didFailWithError:

    - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error {

     //Check the error type and show the appropriate alert to user.
}

    and as you are using Phonegap, you can always check internet connection first by using Connection API before firing any load request:

    <!DOCTYPE html>
<html>
  <head>
    <title>navigator.connection.type Example</title>

    <script type="text/javascript" charset="utf-8" src="cordova-2.2.0.js"></script>
    <script type="text/javascript" charset="utf-8">

    document.addEventListener("deviceready", onDeviceReady, false);

    function onDeviceReady() {
        //checkConnection();
    }

    function checkConnection() {
        var networkState = navigator.connection.type;

        var states = {};
        states[Connection.UNKNOWN]  = 'Unknown connection';
        states[Connection.ETHERNET] = 'Ethernet connection';
        states[Connection.WIFI]     = 'WiFi connection';
        states[Connection.CELL_2G]  = 'Cell 2G connection';
        states[Connection.CELL_3G]  = 'Cell 3G connection';
        states[Connection.CELL_4G]  = 'Cell 4G connection';
        states[Connection.NONE]     = 'No network connection';

        alert('Connection type: ' + states[networkState]);
        if(networkState==Connection.NONE)
          return false;
        else
         return true; 
    }
    function loadGoogle() {

      if(checkConnection()){
       // Do your logical stuff here
       window.location="https://google.com";
      }
      else {
        // Handle connection error 
      }
    }
    </script>
  </head>
  <body>
    <p>A dialog box will report the network state.</p>
    <button onclick="loadGoogle()">Load Google</button>
  </body>
</html>
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