You should realise that Android apps aren't like traditional apps. Regular apps including those for iOS have a single entry point (main or similar). An Androi

You should realise that Android apps aren't like traditional apps. Regular apps including those for iOS have a single entry point (main or similar). An Android application is closer to a mashup. There is no main. Your manifest declares the various components provided, and a normal Android app combines both them and external ones together to provide whatever it is you intend for the user. For iOS Apple provides a simulator where your app is compiled against substantially similar APIs provided by the Mac host. That provides quick startup, debugging etc as iOS apps are islands. For Android a majority of the system has to be provided because your code could be inter-operating with numerous other components, hence the emulator approach they took.