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pichillilorenzo / flutter_inappwebview

A Flutter plugin that allows you to add an inline webview, to use a headless webview, and to open an in-app browser window.
https://inappwebview.dev
Apache License 2.0
3.27k stars 1.61k forks source link

How to send callback from javascript code to flutter webview web? #2154

Open Bitsy-Chuck opened 5 months ago

Bitsy-Chuck commented 5 months ago

Environment

Technology Version
Flutter version 3.19.4
Plugin version
Android version
iOS version
macOS version
Xcode version
Google Chrome version

Device information:

Description

I have an event that completes after some time in js async. I want to add a callback from js to flutter once that event completes. This is all on flutter web. How can I set it up? I cannot see any function to setup javascript channel from js to dart. Would appreciate any workaround if available.

github-actions[bot] commented 5 months ago

👋 @Bitsy-Chuck

NOTE: This comment is auto-generated.

Are you sure you have already searched for the same problem?

Some people open new issues but they didn't search for something similar or for the same issue. Please, search for it using the GitHub issue search box or on the official inappwebview.dev website, or, also, using Google, StackOverflow, etc. before posting a new one. You may already find an answer to your problem!

If this is really a new issue, then thank you for raising it. I will investigate it and get back to you as soon as possible. Please, make sure you have given me as much context as possible! Also, if you didn't already, post a code example that can replicate this issue.

In the meantime, you can already search for some possible solutions online! Because this plugin uses native WebView, you can search online for the same issue adding android WebView [MY ERROR HERE] or ios WKWebView [MY ERROR HERE] keywords.

Following these steps can save you, me, and other people a lot of time, thanks!

eoinzy commented 4 months ago

Same. Android uses the Android System WebView. iOS uses the WKWebView (?) but since Flutter Web doesn't have access to any in-built libraries or apps, there's no WebView to use. This sounds silly since it's web-based, but it's a Web App and not a Web site. I've experimented using IFrameElement but I'm having other issues there.

It would be interesting to see if its feasible to add this JavaScript functionality to Flutter Web. I'm sure it's technically possible but might require a lot of work!