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

import { Component } from "@angular/core";
import { SearchBar } from "tns-core-modules/ui/search-bar";

@Component({
    selector: "ns-app",
    templateUrl: "app.component.html",
})
export class AppComponent {
    onSearchBarLoaded(args) {
        const searchBar = args.object as SearchBar;
        if (searchBar.android) {
            searchBar.android.setOnQueryTextFocusChangeListener(new android.view.View.OnFocusChangeListener({
                onFocusChange: (view, hasFocus) => {
                    if (hasFocus) {
                        console.log("SearchBar获得焦点");
                        // 在这里添加获得焦点时的逻辑
                    } else {
                        console.log("SearchBar失去焦点");
                        // 在这里添加失去焦点时的逻辑
                    }
                }
            }));
        }
    }
}

<SearchBar loaded="onSearchBarLoaded"></SearchBar>