Android SDK auth access token malformed when Access Token use in Dropbox JS SDK

Thanks for your response. I have updated Official API v2 SDK for android but still, I am getting access token which says malformed.

I have tested with android native Logcat for ensuring that before passing the token to my js client side it is modifying or not. I found both are the same token that  I am getting after authentication.

package cordova.plugin.dbxconnect;

import org.apache.cordova.CallbackContext;
import org.apache.cordova.CordovaPlugin;
import org.json.JSONArray;
import org.json.JSONException;

import android.util.Log;
import android.content.Context;

import com.dropbox.core.android.Auth;
import com.dropbox.core.v2.users.FullAccount;
import com.dropbox.core.android.AuthActivity;

public class DbxConnect extends CordovaPlugin {
    final static private String APP_KEY = "myAppKey";

    private static CallbackContext myCallbackContext;

    @Override
    public boolean execute(String action, JSONArray args, CallbackContext callbackContext) throws JSONException {

        if (action.equals("dbxAuth")) {
            this.dbxAuth(callbackContext);
            DbxConnect.myCallbackContext = callbackContext;
            return true;
        }
        return false;
    }

    private void dbxAuth(CallbackContext callbackContext) {
        Context context = this.cordova.getActivity().getApplicationContext();
        Auth.startOAuth2Authentication(context, APP_KEY);
    }

    @Override
    public void onResume(boolean multitasking) {
        super.onResume(multitasking);
        try {
            String accessToken = Auth.getOAuth2Token();
            Log.d("TOKEN",accessToken);
            DbxConnect.myCallbackContext.success(accessToken);
        } catch (IllegalStateException e) {
            DbxConnect.myCallbackContext.error("Drobox login fail");
        }
    }
}