javascript - 向上/向下滑动不适用于 Ionic 2

Question

如何在 Ionic 2 中使用向上滑动或向下滑动？

我试过 Gestures API但它只会在水平滑动时触发。

<ion-card (swipe)="swipePage($event)">
</ion-card>

Answer 1

在 HammerJS 官方文档中，底线是这样写的:

When calling Hammer() to create a simple instance, the pan and swipe recognizers are configured to only detect horizontal gestures.

对于额外的配置，你必须调整你的锤子实例，试试这个:

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

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
  }
}

// In your module providers, add this :

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