Android Tutorials: DialogWindow in Android

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package name : selva.dialogwindow

project name : DialogWindow

Version : 1.5 ( Supports 1.5 and above versions)

main.xml

<?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" />
<Button
android:id="@+id/btn"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Click to display a dialog" />
</LinearLayout>

DialogWindowActivity.java

package selva.dialogwindow;

import android.app.Activity;
import android.os.Bundle;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
    public class DialogWindowActivity extends Activity

          {
              CharSequence[] items = { "Immortalz", "Vampire", "Dragon" };
              boolean[] itemsChecked = new boolean [items.length];
              /** Called when the activity is first created. */
              @Override
              public void onCreate(Bundle savedInstanceState)
                {
                      super.onCreate(savedInstanceState);
                      setContentView(R.layout.main);
                      Button btn = (Button) findViewById(R.id.btn);
                      btn.setOnClickListener(new View.OnClickListener() {
                          public void onClick(View v)
                            {
                              showDialog(0);
                            }
                      });
           }
       @Override
       protected Dialog onCreateDialog(int id)
       {
           switch (id) {
           case 0:
               return new AlertDialog.Builder(this).setIcon(R.drawable.ic_launcher)
                       .setTitle("This is a dialog with some simple text...")
                       .setPositiveButton("OK", new
               DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog,int whichButton)
       {
           Toast.makeText(getBaseContext(),"OK clicked!", Toast.LENGTH_SHORT).show();
       }
                       })
                       .setNegativeButton("Cancel", new
                               DialogInterface.OnClickListener() {
                           public void onClick(DialogInterface dialog,int whichButton)
                           {
                               Toast.makeText(getBaseContext(),"Cancel clicked!", Toast.LENGTH_SHORT).show();
                           }
                       })

                       .setMultiChoiceItems(items, itemsChecked, new
                               DialogInterface.OnMultiChoiceClickListener() {
                           @Override
                           public void onClick(DialogInterface dialog, int which,boolean isChecked)
                           {
                               Toast.makeText(getBaseContext(),items[which] + (isChecked ? " checked!":" unchecked!"),Toast.LENGTH_SHORT).show();
                           }
                       }
                               ).create();
           }
           return null;
       }
}