andriod 对话框

/**
   * Shows message in an AlertDialog.
   *
   * @param message contains identify results processed into a string.
   */
  private void showAlertDialog(StringBuilder message) {
    Builder alertDialogBuilder = new Builder(this);

    // set title
    alertDialogBuilder.setTitle("Number of elements found");

    // set dialog message
    alertDialogBuilder
        .setMessage(message)
        .setCancelable(false)
        .setPositiveButton("Ok", new OnClickListener() {
          @Override public void onClick(DialogInterface dialog, int id) {
          }
        });

    // create alert dialog
    AlertDialog alertDialog = alertDialogBuilder.create();

    // show the alert dialog
    alertDialog.show();
  }