Nativescript 6.0如何在安卓系统中获取搜索栏的focuschangeListener

import { isAndroid } from "@nativescript/core";

// 获取搜索栏的焦点变化监听器
function getSearchBarFocusChangeListener(searchBar) {
  if (isAndroid) {
    return new android.view.View.OnFocusChangeListener({
      onFocusChange: function (view, hasFocus) {
        if (hasFocus) {
          // 当搜索栏获取焦点时的逻辑处理
          console.log("搜索栏获取焦点");
        } else {
          // 当搜索栏失去焦点时的逻辑处理
          console.log("搜索栏失去焦点");
        }
      }
    });
  }
  return null;
}

// 应用搜索栏的焦点变化监听器
const searchBar = document.getElementById("searchBar");
const focusChangeListener = getSearchBarFocusChangeListener(searchBar);
if (focusChangeListener) {
  searchBar.android.setOnFocusChangeListener(focusChangeListener);
}