How to get access token using gmail api

Question

I got the authorization code following this document. But when I tried to get access token, I always got errors. Can anyone help me ?

public String AccessTok         


        

Answer 1

Refer : https://developers.google.com/android-publisher/authorization

You already have authorization code that is called "refresh token". Please keep it in safe place. You can use "refresh token" to generate "access token".

To get "access token", please make a post request to following URL

https://accounts.google.com/o/oauth2/token

Parameters:

• grant_type
• client_id
• client_secret
• refresh_token

where "grant_type" should be "refresh_token"

We are using PHP to do same, here is PHP's code for your reference

    $curl = curl_init();

    curl_setopt_array($curl, array(
    CURLOPT_RETURNTRANSFER => 1,
    CURLOPT_URL => 'https://accounts.google.com/o/oauth2/token',
    CURLOPT_USERAGENT => 'Pocket Experts Services',
    CURLOPT_POST => 1,
    CURLOPT_POSTFIELDS => array(
    "grant_type" => "refresh_token",
    "client_id" => $GOOGLE_CLIENT_ID,
    "client_secret" => $GOOGLE_CLIENT_SECRET,
    "refresh_token" => $GOOGLE_REFRESH_TOKEN,
    )));


    // Send the request & save response to $resp
    $resp = curl_exec($curl);

Hope it will help you.