Embed youtube iframe to ionic 2

I want to embed some youtube video in ionic2, I have done below steps to tell angular that iframe is a safe and trusted url:

in index.html
<meta http-equiv="Content-Security-Policy" content="font-src 'self' data:;img-src * data:; default-src * 'unsafe-eval' 'unsafe-inline'">

in youtubePage.ts
import { SafeResourceUrl,DomSanitizationService} from '@angular/platform-browser'; constructor(private sanitizer: DomSanitizationService) { this.trustednews = sanitizer.bypassSecurityTrustHtml(youtubelink); }

in youtubePage.html
<div [innerHTML]="trustednews"></div>

Result :
I can view the embedded youtube iframe in browser mode when running “ionic server —lab”

However, when I deployed to Android device, it’s missing. May I know is there any idea?

Many thanks.