title: Combine android projects together
body: <p>I want to combine 2 android projects together in such a way that when an button is pressed from one activity (of 1st project ) it should start my activity from (2nd project)
  both the projects are fully functional applications.. it is just that they were developed in parts
  i tried a lot of searches entire but ended up being frustated
  can someone provide me with a simple way to do so</p>
  
  <p>the activity i am trying to call is </p>
  
  <blockquote>
    <p>MainActivity.java 
    from 2nd project
    when a button is pressed from activity in first project</p>
  </blockquote>
  
  <p>i want to combine the projects together..so that i can export it as a single apk...</p>