Android code for checkbox validation

This program is for checkbox validation in android

Step 1) Your main java file is here

package check.box;

import java.lang.reflect.Array;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.CheckBox;

import android.widget.CompoundButton;

import android.widget.TextView;

public class CheckboxActivity extends Activity {

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

       

       final CheckBox chk=(CheckBox)findViewById(R.id.Chk);

       chk.setOnClickListener(new OnClickListener() {

                               

                                public void onClick(View v) {

                                                // TODO Auto-generated method stub

                               

                                                TextView t=(TextView)findViewById(R.id.txt);

                                               

                                                if (((CheckBox) v).isChecked()) {

                                                                t.setText("Checked");

                                                               

                                                }

                                                else

                                                {

                                                                t.setText("Not Checked");

                                                }

                                               

                                                                               

                                               

                                }

                });

      

      

      

    }

}

Step 2) Put below code in your main.xml file

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:orientation="vertical"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    >

<TextView 

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:text="@string/hello"

    />

   

    <TextView

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:id="@+id/txt"

    />

   

    <CheckBox

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:id="@+id/Chk"

    android:text="Click me"

    android:checked="false"

   

    />

   

   

   

</LinearLayout>