Android Pop-up dialog box with button

Package Com.example.helloworld;

Import Android.os.Bundle;
Import android.app.Activity;
Import Android.app.AlertDialog;
Import Android.app.Dialog;
Import Android.content.DialogInterface;
Import Android.view.Menu;
Import Android.view.View;
Import Android.widget.Button;

public class Mainactivity extends Activity {

@Override
protected void OnCreate (Bundle savedinstancestate) {
Super.oncreate (savedinstancestate);
Setcontentview (R.layout.activity_main);

Button btn= (button) This.findviewbyid (R.id.button1);
Btn.setonclicklistener (New View.onclicklistener () {

@Override
public void OnClick (View v) {
TODO auto-generated Method Stub
Dialog mydialog= New Alertdialog.builder (mainactivity.this).
Settitle ("title").
Setmessage ("hint").
SetIcon (R.drawable.ic_launcher). Setpositivebutton ("OK", new Dialoginterface.onclicklistener () {

@Override
public void OnClick (Dialoginterface dialog, int which) {
TODO auto-generated Method Stub

}
}). Setnegativebutton ("Cancel", new Dialoginterface.onclicklistener () {

@Override
public void OnClick (Dialoginterface dialog, int which) {
TODO auto-generated Method Stub
}
}). Setneutralbutton ("View Details", new Dialoginterface.onclicklistener () {

@Override
public void OnClick (Dialoginterface dialog, int which) {
TODO auto-generated Method Stub

}
}). Create ();

Mydialog.show ();

}
});
}

@Override
public boolean Oncreateoptionsmenu (Menu menu) {
Inflate the menu; This adds items to the action bar if it is present.
Getmenuinflater (). Inflate (R.menu.main, menu);
return true;
}

}

Android Pop-up dialog box with button