Display a Dialog Window

package com.java2s.app;
//from   w w  w  . j  av  a2 s  .  c  o  m
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.widget.Toast;

public class MainActivity extends Activity {
    CharSequence[] items = {"XML", "CSS", "HTML"};
    boolean[] itemsChecked = new boolean[items.length];

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        new AlertDialog.Builder(this)
                .setIcon(R.drawable.ic_launcher)
                .setTitle("Title 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() {
                    public void onClick(DialogInterface dialog,
                                        int which, boolean isChecked) {
                        Toast.makeText(getBaseContext(),
                                items[which] + (isChecked ? " checked!" : " unchecked!"),
                                Toast.LENGTH_SHORT).show();
                    }
                }
        ).create().show();
    }

}