小编Ion*_*aru的帖子

导入ES6 polyfill是有用还是多余的 Object

import 'core-js/es6/object';

以及ES7的polyfill Object？

import 'core-js/es7/object';

ES7 polyfill是否涵盖了ES6的所有功能,是否可以将ES6 polyfill放在外面,或者ES6 polyfill是否添加了ES7 polyfill中不存在的功能？

我正试图在键盘弹出和隐藏时执行一些代码.我已将它放在主MyAppComponent中,因为我希望代码在任何应用程序页面上执行,但由于某些原因,没有任何键盘事件正在运行.我究竟做错了什么？

...
import { Keyboard, Platform } from 'ionic-angular';

export class MyAppComponent {

    constructor(public platform: Platform, public keyboard: Keyboard) {
        this.platform.ready().then(() => {

            this.keyboard.didShow.subscribe(() => {
                // This is never executed...
                console.log('Keyboard is now open');
            });
        });
    }
}

我尝试过使用onKeyboardShow离子本机,但是也没有执行它的代码.

...
import { Platform } from 'ionic-angular';
import { Keyboard } from '@ionic-native/keyboard';

export class MyAppComponent {

    constructor(public platform: Platform, public keyboard: Keyboard) {
        this.platform.ready().then(() => {

            this.keyboard.onKeyboardShow().subscribe(() => {
                // This is never executed...
                console.log('Keyboard is now …