CheckBox in Android

activity_main.xml

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity" >

    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="87dp"
        android:layout_marginTop="54dp"
        android:text="CheckBox" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true"
        android:text="Show" />

</RelativeLayout>

MainActivity.java

package com.blogspot.kantapp.checkboxinandroid;

import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;

public class MainActivity extends Activity {
    CheckBox check;

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

        check = (CheckBox) findViewById(R.id.checkBox1);
        Button showButton = (Button) findViewById(R.id.button1);

        showButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View arg0) {
                // TODO Auto-generated method stub
                if (check.isChecked()) {
                    Toast.makeText(getApplicationContext(), "Checked", Toast.LENGTH_LONG).show();
                } else {
                    Toast.makeText(getApplicationContext(), "UnChecked", Toast.LENGTH_LONG).show();
                }
            }
        });
    }


}