the App Flashback #88

    I have git clone the code and built the project sucsussfully  and installed the app in my phone.
    In the MasterChooser interface,after I input the URI adress,it  jumped to the map control interface and and showed that it has connected. But then the App Flashed Back to Desktop.
   I have tryed make_a_map and map_nav,.That's the case with them.(I haven't changed the source code at all.)