@startuml

state MainActivity {
  state "'r/androiddev' button" as androiddevbtn
}

state SubredditActivity {
  state "SubredditActivityLoading"
  state "SubredditActivityLoaded"
}

[*] --> MainActivity
MainActivity --> [*] : onBackPressed()
androiddevbtn --> SubredditActivity: click()
SubredditActivity --> MainActivity : onBackPressed()

@enduml