Spotify in eclipse getting error java.lang.NoClassDefFoundError: com.spotify.sdk.android.playback.NativeSdkPlayer

问题

getting this error at,

Player mPlayer = spotify.getPlayer(playerConfig, this,
new Player.InitializationObserver() {
      @Override
      public void onInitialized() {

      }
  });
}

I am working on eclipse and i was added classes.jar file getting from spotifysdk-1.0.0-beta6.aar into libs folder

Is there any other jar file missing for eclipse?

Thank you,

来源：https://stackoverflow.com/questions/27358212/spotify-in-eclipse-getting-error-java-lang-noclassdeffounderror-com-spotify-sdk