override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)

        setContentView(R.layout.activity_exercise_chooser)
        val toolbar = findViewById(R.id.toolbar) as Toolbar
        setSupportActionBar(toolbar)

        val fab = findViewById(R.id.fab) as FloatingActionButton
        fab.setOnClickListener { view ->
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show()
        }

        Logger.getLogger("loloof64").info("has been launched ? $hasBeenLaunched")
        if (!hasBeenLaunched) {
            uciStart()
            uciSetup()
            hasBeenLaunched = true
        }
        Logger.getLogger("loloof64").info("has been launched (2) ? $hasBeenLaunched")
    }

...

private var hasBeenLaunched = false