[android-developers] try to simulate install button on google play

Guys, I am trying to simulate the click of install button in google play store on a android device.

I 've already got token via GoogleAuthUtil.getToken(context, mailAddress, "oauth2:https://www.googleapis.com/auth/drive")

and got device id , feature, xhr, offerType everything required for a install request.

But I am getting the response below

{"status":"ERROR","errorCode":"GAIA_USER_REQUIRED"...

Could you give me some help to work it out?

my code:

HttpPost httpost = new HttpPost("https://play.google.com/store/install");

List <NameValuePair> nvps = new ArrayList <NameValuePair>();                     

    nvps.add(new BasicNameValuePair("id", "my app id"));  

    nvps.add(new BasicNameValuePair("offerType", "1"));  

    nvps.add(new BasicNameValuePair("device", "my device id"));  

    nvps.add(new BasicNameValuePair("feature", "home-cip-2"));  

    nvps.add(new BasicNameValuePair("xhr", "1"));  

    nvps.add(new BasicNameValuePair("token", "token for google api"));

httpost.setEntity(new UrlEncodedFormEntity(nvps));

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