We are devoloping an android app for a Magento site.
I am facing problem while I try to login(authentication) as magento customer.
I can't find a proper way to login as a customer using email and password.
how can I authenticate or login as a customer?
I followed this links answer: https://stackoverflow.com/questions/25055700/android-magento-customer-loginauthentication-using-using-soap-api
according to that, I created this file: http://pastebin.com/RJAGxTDS under http://hotwheelstoys.in/testing/testing/Mage3.php
But when we pass the values using JSON, we are getting "null".
I saw this link : http://www.magentocommerce.com/api/soap/introduction.html
But there is no API for login through android.