title: Overriding the default Activity stack
body: <p>Is it advisable to create your own Activity stack (which contains only the activity names rather then the complete activity as in the default stack) to improve the memory consumption of the application.</p>
  
  <p>What im basically doing is maintaining a string stack containing the activity names and override the back button functionality to launch Intent with the stack top and finish the current activity. I also add a parameter to decide if the current activity should go into the stack or not (useful in certain situation). So basically I do a <code>startActivity</code> every time I have to launch a new activity and finish the current one so that there is nothing in the default stack and on back press also start the activity from my stack and finish the current activity.</p>
  
  <p>Ques 1: Is it advisable to do it this way? What are the possible problems that could happen?  </p>
  
  <p>Ques 2: Can someone give me an idea of the memory usage of the default Android activity stack so that I can compare it with my own implementation?  </p>