Checkbox

The Android checkbox component is a View subclass which is capable of showing checkbox. Being a subclass of View the checkbox component can be used in your Android app’s GUI inside a ViewGroup, or as the content view of an activity. A checkbox is a specific type of two-states button that can be either checked or unchecked.

Activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent" 
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:orientation="vertical"
tools:context="androiindians.androindian.MainActivity">

<TextView
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:text="@string/tv"
    android:textSize="20sp"
    android:textColor="#234098" 
    android:textAllCaps="true"
    android:textStyle="bold|italic"
    android:id="@+id/tv"
    android:typeface="monospace"
    android:gravity="center"/>

<CheckBox
    android:text="CheckBox"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:id="@+id/checkBox" />
<TextView
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/tv1"
    android:text="UnChecked"/>

</LinearLayout>

MainActivity.Java

package androiindians.androindian;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {

    TextView textView;
    CheckBox checkBox;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        checkBox= (CheckBox) findViewById(R.id.checkBox);
        textView= (TextView) findViewById(R.id.tv1);
        checkBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                if(isChecked==true){
                    textView.setText("Checked");
                }else{
                    textView.setText("Checked");
                }
            }
        });
    }
}

String.xml

<resources>
    <string name="app_name">Androindian</string>
    <string name="tv">Check Box Example</string>    
</resources>

Compcompound Button:

A button with two states, checked and unchecked. When the button is pressed or clicked, the state changes automatically.