Nativescript Android物理后退按钮覆盖？

import { android as androidApp } from "tns-core-modules/application";

export class HomeComponent {
    constructor() {
        androidApp.on(androidApp.AndroidApplication.activityBackPressedEvent, (args) => {
            // 在此处添加自定义的后退按钮行为
            args.cancel = true; // 取消默认的后退行为
        });
    }
}

import { android as androidApp } from "tns-core-modules/application";
import { Page } from "tns-core-modules/ui/page";

export class MyPageComponent {
    constructor(private page: Page) {
        this.page.on(Page.loadedEvent, () => {
            this.page.android.on(Page.androidBackButtonPressedEvent, (args) => {
                // 在此处添加自定义的后退按钮行为
                args.cancel = true; // 取消默认的后退行为
            });
        });
    }
}