ANDROID - Alert Dialog Example

Demo:

1)main.xml:

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

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

    android:id="@+id/RelativeLayout1"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:background="#9932CC"

    android:orientation="vertical" >

    <Button

        android:id="@+id/button1"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_marginTop="80dp"

        android:textSize="20dp"

        android:text="Show AlertDialog" />

</RelativeLayout>

2)Activity:

package com.venky.alertDialogdemo;

import android.app.Activity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.Toast;

public class AlertDialogDemoActivity extends Activity {

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

      Button showAlertDialog;

      @Override

      public void onCreate(Bundle savedInstanceState) {

            super.onCreate(savedInstanceState);

            setContentView(R.layout.main);

            // call the references

            showAlertDialog = (Button) findViewById(R.id.button1);

            // set the Listener

            showAlertDialog.setOnClickListener(new OnClickListener() {

                  public void onClick(View v) {

                        // TODO Auto-generated method stub

                        // Creating AlertDialog

                        AlertDialog.Builder alertDialog = new AlertDialog.Builder(

                                    AlertDialogDemoActivity.this);

                        // set Icon

                        alertDialog.setIcon(R.drawable.ic_launcher);

                        // set Title

                        alertDialog.setTitle("Alert Dialog");

                        // set Message

                        alertDialog.setMessage("This is AlertDialog");

                        // set Positive Button

                        alertDialog.setPositiveButton("OK",

                                    new DialogInterface.OnClickListener() {

                                          public void onClick(DialogInterface dialog,

                                                      int which) {

                                                // TODO Auto-generated method stub

                                                Toast.makeText(getApplicationContext(), "OK",

                                                            Toast.LENGTH_LONG).show();

                                          }

                                    });

                        // set Negetive Button

                        alertDialog.setNegativeButton("No",

                                    new DialogInterface.OnClickListener() {

                                          public void onClick(DialogInterface dialog,

                                                      int which) {

                                                // TODO Auto-generated method stub

                                                Toast.makeText(getApplicationContext(), "No",

                                                            Toast.LENGTH_LONG).show();

                                          }

                                    });

                        // set Neutral Button

                        alertDialog.setNeutralButton("Cancel",

                                    new DialogInterface.OnClickListener() {

                                          public void onClick(DialogInterface dialog,

                                                      int which) {

                                                // TODO Auto-generated method stub

                                                Toast.makeText(getApplicationContext(),

                                                            "Cancel", Toast.LENGTH_LONG).show();

                                          }

                                    });

                        // show AlertDialog

                        alertDialog.show();

                  }

            });

      }

}

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