title: How do I Navigate between multiple .js file in my React Native App?
body: <p>As a newbie in React Native, I'm trying to find a way to Navigate between the pages. everything that I found from google was about navigating between classes inside App.js and some other that has separated files was not working for me.
  I found a lot of examples of using 'Navigator','StackNavigator','React-native-router-flux' but none of them worked for me.
  this is what I need to learn:</p>
  
  <p>login page: ./src/pages/Login.js</p>
  
  <p>Homepage: ./src/pages/Home.js</p>
  
  <p>login page(username &amp; password) ------> if true -----> Homepage</p>