yanglongji / ionic-long-press

A little directive for long-press events on Ionic components

Ionic Long Press

Say you need to increment something quickly while pushing a button. Or something. This directive intends to build upon the existing Hammer.JS press event that Ionic uses for long pressing, by giving you interval emission.

Compatibility

This plugin should be compatible with Ionic and Angular 2+. It was tested with Ionic 3.5.0 and Angular 4.1.3, but the APIs have not changed since Angular 2 final. If this compatibility information is wrong, please open an issue.

Installation

npm install --save ionic-long-press

Usage

The directive should work on any HTML element.

Import the module:

import { LongPressModule } from 'ionic-long-press';

@NgModule({
    imports: [
        ...
        LongPressModule
        ...
    ]
})

And use in your template:

<button ion-button ion-long-press [interval]="400" (onPressStart)="pressed()" (onPressing)="active()" (onPressEnd)="released()"></button>

API

Item	Description
ion-long-press	Directive to include the press event outputs.
[interval]	Number. Allows you to set the interval at which the onPressing event will fire. Default 500.
(onPressStart)	Event fired when the element is initially pressed.
(onPressing)	Event fired on the specified interval when the element is being held.
(onPressEnd)	Event fired when the element is released.

Caveats

I have instated a 40ms interval limit to prevent poor performance. I recommend a longer interval for heavy computations. If you need this limit lowered, please open an issue explaining your use case.

Credits

This plugin was developed by Wilson Hobbs in July 2017.