title: Android Studio R file deleted when new activity is created?
body: <p>I am new to Android development. I am currently using Android Development Studio for my development process. When I create a new project with one activity everything runs fine however, when I add a new activity to the project through the wizard, the r file is deleted and R is not able to be resolved. I haven't an idea why this occurs and can not get Android Studio to regenerate the R file. Has anyone else come across this and know how to fix this?</p>
  
  <p>Thank you!</p>