title: Package name & Class Name of facebook app
body: <p>Just a small confusion I want to ask while making a facebook app to implement share feature in my android app<img src="https://i.stack.imgur.com/QmexD.jpg" alt="enter image description here"></p>
  
  <p><em>Unique app Identifier used to open your app</em></p>
  
  <ol>
  <li><strong>Package Name:</strong>  Is it that unique identifier that I have written while creating the new facebook app at their developer console ? or Is it the package name of my android app ?</li>
  </ol>
  
  <p><em>The Main Activity you want Facebook to launch</em></p>
  
  <ol start="2">
  <li><strong>Class Name:</strong> I have added a facebook share button in every fragment(class), so which class is the Main Activity that it want facebook to launch ? Or is it the main activity of my android app?</li>
  </ol>