package co.ceryle.radiorealbutton;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;

import co.ceryle.radiorealbutton.library.RadioRealButton;
import co.ceryle.radiorealbutton.library.RadioRealButtonGroup;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        RadioRealButtonGroup rrbg1 = (RadioRealButtonGroup) findViewById(R.id.radioRealButtonGroup_1);
        rrbg1.setOnClickedButtonPosition(new RadioRealButtonGroup.OnClickedButtonPosition() {
            @Override
            public void onClickedButtonPosition(int position) {
                Toast.makeText(MainActivity.this, "Clicked position: " + position, Toast.LENGTH_SHORT).show();
            }
        });

        RadioRealButton radioRealButton;
    }
}

/*
 * Copyright (C) 2016 Ege Aker <egeaker@gmail.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package co.ceryle.radiorealbutton;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;

import co.ceryle.radiorealbutton.library.RadioRealButton;
import co.ceryle.radiorealbutton.library.RadioRealButtonGroup;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        RadioRealButtonGroup rrbg1 = (RadioRealButtonGroup) findViewById(R.id.radioRealButtonGroup_1);
        rrbg1.setOnClickedButtonPosition(new RadioRealButtonGroup.OnClickedButtonPosition() {
            @Override
            public void onClickedButtonPosition(int position) {
                Toast.makeText(MainActivity.this, "Clicked position: " + position, Toast.LENGTH_SHORT).show();
            }
        });

        RadioRealButton radioRealButton;
    }
}

Update MainActivity.java