How To Create a Dialog in Android

 Creating a Dialog is quite easy in Android.

void showDialogToPurchase()
{
    AlertDialog.Builder builder = new AlertDialog.Builder(this);
    builder.setTitle("Title");
    builder.setMessage("Message")
            .setPositiveButton("OK", new DialogInterface.OnClickListener() {
                public void onClick(DialogInterface dialog, int id) {
                    // User clicks OK

                }
            })
            .setNegativeButton(R.string.cancel, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                // User cancels the dialog.
                }
            });
    builder.create().show();
}