【ionic】實現頁面上下左右滑動

1.安裝

npm install hammerjs --save && npm install @types/hammerjs --save-dev

2.創建MyHammerConfig.ts

import { HammerGestureConfig, HAMMER_GESTURE_CONFIG } from '@angular/platform-browser';
import * as Hammer from 'hammerjs';

// create a class that overrides hammer default config

export class MyHammerConfig extends HammerGestureConfig  {
  overrides = <any>{
    'swipe': { direction: Hammer.DIRECTION_ALL } // override default settings
  }
}

3.module導入，並在providers里加入以下代碼

providers: [{ 
  provide: HAMMER_GESTURE_CONFIG, 
  useClass: MyHammerConfig 
}]

4.在html中通過swipeEvent方法就可以監聽到向上和向下的滑動了

html：

<ion-content  >
    <div (swipe)="swipeEvent($event)">

    </div>
</ion-content>

ts：

import 'hammerjs';

    swipeEvent($event) {
        console.log($event.direction);
        if ($event.direction ===  Hammer.DIRECTION_LEFT) {
            alert('left');
        } else if ($event.direction === Hammer.DIRECTION_RIGHT) {
            alert('right');
        } else if ($event.direction === Hammer.DIRECTION_UP) {
            alert('up');
        } else if ($event.direction === Hammer.DIRECTION_DOWN) {
            alert('down');
        }

ps：之前項目裏有hannerjs，這裏沒介紹

參考資料：https://www.jianshu.com/p/d9e70df5366a