Flutter webview_flutter: Not able to detect platform with java-script code

Question

I am using webview_flutter to show a web page. I am using the below code to detect the platform, like is it android or ios. My below code is not working. Flutter webview - https://pub.dev/packages/webview_flutter I have added the below class in body.

class - view-withKeyboard


function applyAfterResize() {
            console.log(getMobileOperatingSystem());
            if (getMobileOperatingSystem() == 'ios') {
                if (originalPotion !== false) {
                    var wasWithKeyboard = $('body').hasClass('view-withKeyboard');
                    var nowWithKeyboard = false;
                        var diff = Math.abs(originalPotion - ($(window).width() + $(window).height()));
                        if (diff > 100) nowWithKeyboard = true;
                    $('body').toggleClass('view-withKeyboard', nowWithKeyboard);
                    if (wasWithKeyboard != nowWithKeyboard) {
                        //onKeyboardOnOff(nowWithKeyboard);
                    }
                }
            }
        }
        $(document).on('focus blur', '.white-div input[type=text]', function(e){
            //alert('here');
            if (getMobileOperatingSystem() == 'ios') {
              var $obj = $(this);
              var nowWithKeyboard = (e.type == 'focusin');
              $('body').toggleClass('view-withKeyboard', nowWithKeyboard);
              onKeyboardOnOff(nowWithKeyboard);
            }
        });

Can you show us the WebView widget on how you use it.

Raine Dale Holgado
– Raine Dale Holgado

2020-12-15 07:33:33 +00:00
Commented Dec 15, 2020 at 7:33 — Raine Dale Holgado
– Raine Dale Holgado, Commented Dec 15, 2020 at 7:33

Zyair · Accepted Answer · 2020-12-15 08:01:29Z

1

Enable JavascriptMOde first and use evaluateJavascript

WebView(
    javascriptMode: JavascriptMode.unrestricted,
    initialUrl: '',
    onWebViewCreated:
        (WebViewController webViewController) async {
      webViewController.evaluateJavascript(
          "javascript:(function() { " +
              "console.log('Test Test Test');" +
              "})()");
    },
  ),

answered Dec 15, 2020 at 8:01

Zyair

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