Make button enable and disable in android

This program is for make a button enable and disable.

Step 2) Put below code in your main java file

 

package cal.ender;

import java.util.Calendar;

import android.app.Activity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

public class CalenderActivity extends Activity {

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

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

      

        final Button btn1=(Button)findViewById(R.id.button1);

        Button btn2=(Button)findViewById(R.id.button2);

        Button btn3=(Button)findViewById(R.id.button3);

       

       

        btn2.setOnClickListener(new OnClickListener() {

                                               

                                                public void onClick(View arg0) {

                                                                // TODO Auto-generated method stub

                                                                btn1.setEnabled(false);

                                                               

                                                               

                                                }

                                });

               

        btn3.setOnClickListener(new OnClickListener() {

                                               

                                                public void onClick(View arg0) {

                                                                // TODO Auto-generated method stub

                                                                btn1.setEnabled(true);

                                                               

                                                }

                                });

           

       

    }

}

Step 2) Code for 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"

    android:weightSum="1">

<TextView 

    android:layout_width="fill_parent"

    android:layout_height="wrap_content"

    android:text="@string/hello"

/>

<Button android:text="Change me" android:id="@+id/button1" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>

<Button android:text="Disable" android:id="@+id/button2" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>

<Button android:text="Enable" android:id="@+id/button3" android:layout_width="wrap_content" android:layout_height="wrap_content"></Button>

 </LinearLayout>