Embeed the youtube into the APP

Youtube API way:
https://www.sitepoint.com/using-the-youtube-api-to-embed-video-in-an-android-app/


Not use Youtube API way:

Video

https://github.com/lipangit/jiecaovideoplayer

https://github.com/google/ExoPlayer

http://www.androidhive.info/2014/12/how-to-play-youtube-video-in-android-app/

Youtube

https://github.com/PierfrancescoSoffritti/AndroidYouTubePlayer

https://github.com/Glurt/EdenYouTube

https://github.com/TheFinestArtist/YouTubePlayerActivity

No need use youtube api way:

https://github.com/roy989898/useVideoViewPlayYoutube

Tutorial:

https://www.sitepoint.com/using-the-youtube-api-to-embed-video-in-an-android-app/

Webview

https://github.com/JackDinealKIM/youtube-android-player-helper

the youtube intent

public static void watchYoutubeVideo(String id){
    try{
         Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("vnd.youtube:" + id));
         startActivity(intent);                 
         }catch (ActivityNotFoundException ex){
             Intent intent=new Intent(Intent.ACTION_VIEW, 
             Uri.parse("http://www.youtube.com/watch?v="+id));
             startActivity(intent);
         }
}