ion-refresher

The refresher provides pull-to-refresh functionality on a content component. The pull-to-refresh pattern lets a user pull down on a list of data using touch in order to retrieve more data.

Data should be modified during the refresher's output events. Once the async operation has completed and the refreshing should end, call complete() on the refresher.

Native Refreshers

Both iOS and Android platforms provide refreshers that take advantage of properties exposed by their respective devices that give pull to refresh a fluid, native-like feel.

Certain properties such as pullMin and snapbackDuration are not compatible because much of the native refreshers are scroll-based. See Refresher Properties for more information.

Using the iOS native ion-refresher requires setting the pullingIcon property on ion-refresher-content to the value of one of the available spinners. See the Spinner Documentation for accepted values. The pullingIcon defaults to the lines spinner on iOS. The spinner tick marks will be progressively shown as the user pulls down on the page.

The iOS native ion-refresher relies on rubber band scrolling in order to work properly and is only compatible with iOS devices as a result. We provide a fallback refresher for apps running in iOS mode on devices that do not support rubber band scrolling.

Android Usage

Using the MD native ion-refresher requires setting the pullingIcon property on ion-refresher-content to the value of one of the available spinners. See the ion-spinner Documentation for accepted values. pullingIcon defaults to the circular spinner on MD.

Usage

<!-- Default Refresher -->
<ion-content>
  <ion-refresher slot="fixed" (ionRefresh)="doRefresh($event)">
    <ion-refresher-content></ion-refresher-content>
  </ion-refresher>
</ion-content>

<!-- Custom Refresher Properties -->
<ion-content>
  <ion-refresher slot="fixed" pullFactor="0.5" pullMin="100" pullMax="200">
    <ion-refresher-content></ion-refresher-content>
  </ion-refresher>
</ion-content>

<!-- Custom Refresher Content -->
<ion-content>
  <ion-refresher slot="fixed" (ionRefresh)="doRefresh($event)">
    <ion-refresher-content
      pullingIcon="arrow-dropdown"
      pullingText="Pull to refresh"
      refreshingSpinner="circles"
      refreshingText="Refreshing...">
    </ion-refresher-content>
  </ion-refresher>
</ion-content>

import { Component } from '@angular/core';

@Component({
  selector: 'refresher-example',
  templateUrl: 'refresher-example.html',
  styleUrls: ['./refresher-example.css'],
})
export class RefresherExample {
  constructor() {}

  doRefresh(event) {
    console.log('Begin async operation');

    setTimeout(() => {
      console.log('Async operation has ended');
      event.target.complete();
    }, 2000);
  }
}

<!-- Default Refresher -->
<ion-content>
  <ion-refresher slot="fixed">
    <ion-refresher-content></ion-refresher-content>
  </ion-refresher>
</ion-content>

<!-- Custom Refresher Properties -->
<ion-content>
  <ion-refresher slot="fixed" pull-factor="0.5" pull-min="100" pull-max="200">
    <ion-refresher-content></ion-refresher-content>
  </ion-refresher>
</ion-content>

<!-- Custom Refresher Content -->
<ion-content>
  <ion-refresher slot="fixed">
    <ion-refresher-content
      pulling-icon="arrow-dropdown"
      pulling-text="Pull to refresh"
      refreshing-spinner="circles"
      refreshing-text="Refreshing...">
    </ion-refresher-content>
  </ion-refresher>
</ion-content>

import React from 'react';
import { IonContent, IonRefresher, IonRefresherContent } from '@ionic/react';
import { RefresherEventDetail } from '@ionic/core';

function doRefresh(event: CustomEvent<RefresherEventDetail>) {
  console.log('Begin async operation');

  setTimeout(() => {
    console.log('Async operation has ended');
    event.detail.complete();
  }, 2000);
}

export const RefresherExample: React.FC = () => (
  <IonContent>
    {/*-- Default Refresher --*/}
    <IonContent>
      <IonRefresher slot="fixed" onIonRefresh={doRefresh}>
        <IonRefresherContent></IonRefresherContent>
      </IonRefresher>
    </IonContent>

    {/*-- Custom Refresher Properties --*/}
    <IonContent>
      <IonRefresher slot="fixed" onIonRefresh={doRefresh} pullFactor={0.5} pullMin={100} pullMax={200}>
        <IonRefresherContent></IonRefresherContent>
      </IonRefresher>
    </IonContent>

    {/*-- Custom Refresher Content --*/}
    <IonContent>
      <IonRefresher slot="fixed" onIonRefresh={doRefresh}>
        <IonRefresherContent
          pullingIcon="arrow-dropdown"
          pullingText="Pull to refresh"
          refreshingSpinner="circles"
          refreshingText="Refreshing...">
        </IonRefresherContent>
      </IonRefresher>
    </IonContent>
  </IonContent>
);

<template>
  <!-- Default Refresher -->
  <ion-content>
    <ion-refresher slot="fixed" @ionRefresh="doRefresh($event)">
      <ion-refresher-content></ion-refresher-content>
    </ion-refresher>
  </ion-content>

  <!-- Custom Refresher Properties -->
  <ion-content>
    <ion-refresher slot="fixed" pull-factor="0.5" pull-min="100" pull-max="200">
      <ion-refresher-content></ion-refresher-content>
    </ion-refresher>
  </ion-content>

  <!-- Custom Refresher Content -->
  <ion-content>
    <ion-refresher slot="fixed" @ionRefresh="doRefresh($event)">
      <ion-refresher-content
        pulling-icon="arrow-dropdown"
        pulling-text="Pull to refresh"
        refreshing-spinner="circles"
        refreshing-text="Refreshing...">
      </ion-refresher-content>
    </ion-refresher>
  </ion-content>
</template>

<script lang="ts">
  import { Component, Vue } from 'vue-property-decorator';

  @Component()
  export default class Example extends Vue {

    doRefresh(event) {
      console.log('Begin async operation');

      setTimeout(() => {
        console.log('Async operation has ended');
        event.target.complete();
      }, 2000);
    }
  }
</script>

Properties

closeDuration
Description	Time it takes to close the refresher. Does not apply when the refresher content uses a spinner, enabling the native refresher.
Attribute	`close-duration`
Type	`string`
Default	`'280ms'`
disabled
Description	If `true`, the refresher will be hidden.
Attribute	`disabled`
Type	`boolean`
Default	`false`
pullFactor
Description	How much to multiply the pull speed by. To slow the pull animation down, pass a number less than `1`. To speed up the pull, pass a number greater than `1`. The default value is `1` which is equal to the speed of the cursor. If a negative value is passed in, the factor will be `1` instead. For example: If the value passed is `1.2` and the content is dragged by `10` pixels, instead of `10` pixels the content will be pulled by `12` pixels (an increase of 20 percent). If the value passed is `0.8`, the dragged amount will be `8` pixels, less than the amount the cursor has moved. Does not apply when the refresher content uses a spinner, enabling the native refresher.
Attribute	`pull-factor`
Type	`number`
Default	`1`
pullMax
Description	The maximum distance of the pull until the refresher will automatically go into the `refreshing` state. Defaults to the result of `pullMin + 60`. Does not apply when the refresher content uses a spinner, enabling the native refresher.
Attribute	`pull-max`
Type	`number`
Default	`this.pullMin + 60`
pullMin
Description	The minimum distance the user must pull down until the refresher will go into the `refreshing` state. Does not apply when the refresher content uses a spinner, enabling the native refresher.
Attribute	`pull-min`
Type	`number`
Default	`60`
snapbackDuration
Description	Time it takes the refresher to to snap back to the `refreshing` state. Does not apply when the refresher content uses a spinner, enabling the native refresher.
Attribute	`snapback-duration`
Type	`string`
Default	`'280ms'`

Events

Name	Description
`ionPull`	Emitted while the user is pulling down the content and exposing the refresher.
`ionRefresh`	Emitted when the user lets go of the content and has pulled down further than the `pullMin` or pulls the content down and exceeds the pullMax. Updates the refresher state to `refreshing`. The `complete()` method should be called when the async operation has completed.
`ionStart`	Emitted when the user begins to start pulling down.

Methods

cancel
Description	Changes the refresher's state from `refreshing` to `cancelling`.
Signature	`cancel() => Promise<void>`
complete
Description	Call `complete()` when your async operation has completed. For example, the `refreshing` state is while the app is performing an asynchronous operation, such as receiving more data from an AJAX request. Once the data has been received, you then call this method to signify that the refreshing has completed and to close the refresher. This method also changes the refresher's state from `refreshing` to `completing`.
Signature	`complete() => Promise<void>`
getProgress
Description	A number representing how far down the user has pulled. The number `0` represents the user hasn't pulled down at all. The number `1`, and anything greater than `1`, represents that the user has pulled far enough down that when they let go then the refresh will happen. If they let go and the number is less than `1`, then the refresh will not happen, and the content will return to it's original position.
Signature	`getProgress() => Promise<number>`

ion-refresher

Native Refreshers

iOS Usage

Android Usage

Usage

Properties

closeDuration

disabled

pullFactor

pullMax

pullMin

snapbackDuration

Events

Methods

cancel

complete

getProgress