안드로이드 라디오버튼

MainActivity.java

package com.example.ggari_radiogroup;

import android.app.Activity;
import android.os.Bundle;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.RadioGroup.OnCheckedChangeListener;
import android.widget.Toast;


public class MainActivity extends Activity implements OnCheckedChangeListener{

	RadioGroup radioGroup;
	RadioButton rb1;
	RadioButton rb2;
	RadioButton rb3;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		
		radioGroup = (RadioGroup)findViewById(R.id.radioGroup);
		rb1 = (RadioButton)findViewById(R.id.rb1);
		rb2 = (RadioButton)findViewById(R.id.rb2);
		rb3 = (RadioButton)findViewById(R.id.rb3);
		radioGroup.setOnCheckedChangeListener(this);
		
	}

	@Override
	public void onCheckedChanged(RadioGroup group, int checkedId) {
		if (radioGroup.getCheckedRadioButtonId() == R.id.rb1) {
			Toast.makeText(getApplicationContext(), "까리가 선택됨", 1).show();
		} else if (radioGroup.getCheckedRadioButtonId() == R.id.rb2) {
			Toast.makeText(getApplicationContext(), "리그오브레전드가 선택됨", 1).show();
		} else {
			Toast.makeText(getApplicationContext(), " league of legends", 1).show();
		}
	}
}

main.xml