title: React Native Android: Showing an Activity from Java
body: <p>I need to show an Activity ( Native android, Java ) in React-native.
  I know it have been asked few times, But none helped me. I didn't find any tutorial or documentations on how to call/open the activity in React-Native. where to put the activity and how to register/add it to project.</p>
  
  <p>Is there any tutorial or sample code?</p>
  
  <p>I'm using react-native-camera , when i run it from RN, it shows a view from rn-camera, i looked into it's source code but it doesn't have an Activity.</p>
  
  <p>If you could tell which modules for react-native are using activities it could help as well. (showing an android activity in react native).</p>
  
  <p>There is some documentations on how to add react native to existing android projects but i couldn't find any guide on how to import an activity from android.</p>
  
  <p>I'd really appreciate your help.</p>