Flutter - WebVIew doesn´t work with HTTP

[Bruno Zan]

Hello, I´m trying to use Webview on my flutter App.

My problem: Webview only works with HTTPS protocol, pages with HTTP doesn´t work.

// "http://www.erechim.rs.gov.br/sys530/publico"
// "https://portal.systempro.com.br:8181/sys152/login.xhtml",

Both applications are build by my company, so we are sure that java and server configurations are the same.

I already tried this setup but didn´t solve the problem:
https://medium.com/flutter-c%C3%B4te-divoire/how-to-set-up-a-basic-flutter-webview-from-a-to-z-8c659b292ec4

and this one too:
http://android--kotlin.blogspot.com/2019/03/android-webview-neterrcleartextnotpermi.html

@override
Widget build(BuildContext context) {
  return Scaffold(

    body:  WebView(
      initialUrl: "https://portal.systempro.com.br:8181/sys152/login.xhtml",
      // "http://www.erechim.rs.gov.br/sys530/publico"
      // "https://portal.systempro.com.br:8181/sys152/login.xhtml",
      // "https://www.youtube.com/watch?v=tAGnKpE4NCI",
      gestureNavigationEnabled: false,
      debuggingEnabled: false,
      javascriptMode: JavascriptMode.unrestricted,
    ),
  );
}

AndroidManifest:

android:usesCleartextTraffic="true"
android:networkSecurityConfig="@xml/network_security_config"
android:largeHeap="true"
android:allowBackup="false"
android:supportsRtl="true">

NetworkSecurity.xml:

<?xml version="1.0" encoding="utf-8"?>
<network-security-config>
    <base-config cleartextTrafficPermitted="true">
        <trust-anchors>
            <certificates src="system" />
        </trust-anchors>
    </base-config>
</network-security-config>

dependencies:

dependencies:
  flutter:
    sdk: flutter
  webview_flutter: ^0.3.19+9

Any tips for this? I´ts common to use http pages, I can´t believe I´m wasting time with this hahaha.

Best Regards from Brazil.
Bruno Zanoelo

[Igor Karelin]

Check the logs in your IDE.

For iOS you’ll need to add a key to info.plist to accept http to some domains.

Best regards, Igor Karelin

Flutter Developer on freelance

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[Bruno Zan]

Hello,

I´m actually facing this problem in android, if you could help me do more configurations to make this work in Android I would be glad, because most of my users will use android.

I´m desperate and I´m not finding any solution for this simple situation.