Flutter Method call | Flutter native plugin method call

To invoke a native method you need 2 steps only

1. Create method channel and invoke
2. Implement method handler and set method handler

Step 1- For native method call first you need to create a class in lib folder of your plugin and initiate a MethodChannel.

class TestMethodCall {
                                   
static const MethodChannel _channel = const MethodChannel('cloud_sdk');
Future<bool> _initDevice( ) async {
    try {
      return  _channel.invokeMethod('deviceMethod');
    } on PlatformException catch (ex) {
      print(ex);
    }
    return false;
  }
}

Step 2- Now Create another class in your native Android src.main folder where you need to implement MethodCallHandler

public class CloudSdkPlugin implements MethodCallHandler {
                                                                               
  public static void registerWith(Registrar registrar) {
    final MethodChannel channel = new MethodChannel(registrar.messenger(),"cloud_sdk");
    channel.setMethodCallHandler(new CloudSdkPlugin());
  }
   
  @Override
  public void onMethodCall(MethodCall call, Result result) {
    if(call.method.equals("deviceMethod")){
      /// TODO: Do your native work here
    }
  }
}

*If you need to pass the arguments

class TestMethodCall {
static const MethodChannel _channel = const MethodChannel('cloud_sdk');
Future<bool> _initDevice(String userId,String userName) async {
    try {
      return  _channel.invokeMethod('deviceMethod', {'userId': userId,'userName': userName});
    } on PlatformException catch (ex) {
      print(ex);
    }
    return false;
  }
}


public class CloudSdkPlugin implements MethodCallHandler {
  public static void registerWith(Registrar registrar) {
    final MethodChannel channel = new MethodChannel(registrar.messenger(),"cloud_sdk");
    channel.setMethodCallHandler(new CloudSdkPlugin());
  }

  @Override
  public void onMethodCall(MethodCall call, Result result) {
    if(call.method.equals("deviceMethod")){
    String userId = call.argument("userId");
    String userName = call.argument("userName");
      /// TODO: Do your native work here
    }
  }
}

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