title: Implementing a Shopping Cart
body: <p>I am making an Android app where I am implementing a Shopping Cart. When the user selects an item, it is added to his/her shopping cart/bag in the app. Once he/she adds an item, he's presented with the menu again, where he can add more items. Now I want to know how do I save these items during the buying process. I mean the items that are being saved in the bag, how do I save them in my android app? Shall I use the Android SQLite database? or use putextra/getextra and navigate through activities? or shall I use Global Variables (something like subclassing the Application class)?</p>
  
  <p>Or is there any other better way to implement such a thing? The details that I need to show in my bag are: the name of the product, its price, quantity and a few other attributes/options related to the product.  </p>