解析从php $ _SESSION []到textview的json数据的问题

i am having problems parsing json data from my php file to my textviews in my android application. for some reason it looks like the value inside $_SESSION['username'] is not being carried throughout the application. however, if i were to try it on my browser it works just fine. Below is my profile.php. i used the first if statement to check weither the json itself was the problem. sure enough, i get the default account in my android app. but i donot get the actual user.i am having problems parsing json data from my