Add support for sending data from webview to native in iOS and Android

[OPY-bbt]

• create the local http-server in example/html folder (for example: by http-server)
• modify the messageUrl in main.dart to your http-server url
• run the example project and click the Open Webview (message demo)button
• click send to flutter button in webview and you can see the result in the bottom.

[bobby-walle]

I have a error:
java.lang.RuntimeException: Methods marked with @UiThread must be executed on the main thread. Current thread: JavaBridge
maybe use 'new Handler(Looper.getMainLooper())'

[OPY-bbt]

done

[vijayawoshe]

How did you solve this error
?
I have a error:
java.lang.RuntimeException: Methods marked with @UiThread must be executed on the main thread. Current thread: JavaBridge
maybe use 'new Handler(Looper.getMainLooper())'
I am getting the same

[OPY-bbt]

I add mainLooper in commit, are you sure on the lastest branch?

[OPY-bbt]

#523 is already implemented on the main branch

[ashbin]

#71

[diegovar]

Can this be merged in?

[kevinpthorne]

Please? x)

[rinlv]

still waiting 🔢

[rinlv]

I solved this problem with dynamic channel name for Android and iOS #523. Hope it's helpful

[ragaisis]

This one is is important for us too

[phamquan]

Please resolve and merge this request

[hungbu]

Please resolve and merge this request

[OPY-bbt]

This is already implemented on the main branch, see example.