FlutterToast - Flutter application to show Android's Toast Message

Overview

Android's Toast Message in Flutter

Flutter application to show Android's Toast Message.

Screenshot

Methods and code to Show Toast message in flutter.

To show Toast Message in flutter, I'm communicating to native code using Platfrom Channels from flutter, and from native code I'm showing the Toast message.

Platform Channels:

Which is provided by flutter to communicate between native code and flutter code.

Define Channel in Flutter

    static const platform = const MethodChannel('flutter.toast.message.channel');

Define Channel/Handler in Android

    MethodChannel(flutterView, CHANNEL).setMethodCallHandler { call, result ->
          
    }

Define platform channel as above and provide channel name, This Channel name must be same for both platform flutter code and Android Natice Code.

Create Class in Flutter:

To communicate with Android in order to show Toast message.

    class Toast {
      Toast(String message) {
        _showToast(message);
      }

      static const platform = const MethodChannel('flutter.toast.message.channel');

      Future<Null> _showToast(String message) async {
        // invoke method, provide method name and arguments.
        await platform.invokeMethod('toast', {'message': message});
      }
    }

Handle Method invocation from Flutter in Android:

    class MainActivity : FlutterActivity() {
        companion object {
            const val CHANNEL = "flutter.toast.message.channel"
            const val METHOD_TOAST = "toast"
            const val KEY_MESSAGE = "message"
        }

        override fun onCreate(savedInstanceState: Bundle?) {
            super.onCreate(savedInstanceState)
            GeneratedPluginRegistrant.registerWith(this)

            // handle method invocation from flutter, and perform action
            MethodChannel(flutterView, CHANNEL).setMethodCallHandler { call, result ->
                if (call.method == METHOD_TOAST) {
                    val message = call.argument<String>(KEY_MESSAGE)
                    Toast.makeText(this@MainActivity, message, Toast.LENGTH_SHORT).show()
                }
            }
        }
    }

That's all we need to do to show Android Toast message in flutter.

Usage:

To show toast messages from flutter, Simply call Toast class with your message as argument as below:

    Toast("Hello, I'm Toast from Flutter.");

Questions?

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Comments
  • Receiving and exception

    Receiving and exception

    Migrated to android embedding version 2 . After that getting an exception like " Platform error MissingPluginException(No implementation found for method customizar on channel android3ds/channel)" . Let me know what is the issue here

    opened by rashmisridar 0
Owner
Uttam
Senior Software Engineer | Flutter Developer | Android Developer | Open-Source enthusiast
Uttam
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