angular - Keydown event not working in Android Device -


i write function using keydown event let input allow number, '-', , backspace key. when test in ionic serve or ios, worked. when test in android device, not working, input field allow character inputed. when use console.log (event), returns key=“unidentified”, keycode = 229.

environment: ionic 3, node v6.11, npm 3.10, android 5.1.1

i don't know how fix this.

.ts file

import {component} '@angular/core'; import {navcontroller} 'ionic-angular';  @component({   selector: 'page-home',   templateurl: 'home.html' }) export class homepage {   constructor(public navctrl: navcontroller) {    }    isvalidnumber(event) {     //console.log(event);     return /\d|-|backspace/.test(event.key);    } }

.html file

<ion-header>   <ion-navbar>     <ion-title>home</ion-title>   </ion-navbar> </ion-header> <ion-content>   <ion-item>       <ion-input  type="text" (keydown)="isvalidnumber($event)"></ion-input>   </ion-item>  </ion-content>

try following:

function isvalidnumber(e) { if (     !(e.keycode === 8 || !(e.keycode >= 48 && e.keycode <= 57) ||  // 0-9         !(e.keycode >= 96 && e.keycode <= 105) // numpad 0-9         // more checking arrows, delete, backspace, etc.         || e.keycode == 229)) { // check 'placeholder keycode'     return false; } {     // not valid key     e.preventdefault(); } return true;

}

found here

please read following: http://lists.w3.org/archives/public/www-dom/2010julsep/att-0182/keycode-spec.html


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