MainActivity.scala

class MainActivity
    extends BaseActivity
    with LoaderCallbacks[SharedPreferences] {
      
    private var dbOnly         : Boolean           = false
    private var enableDebug    : Boolean           = false
    private var filteredSignals: Array[String]     = null
    private var fudgeSignal    : Boolean           = true
    private var preferences    : SharedPreferences = null
    private var sigInfoIds     : TypedArray        = null
    private val signalTextViewMap                  = new Emap[Signal, TextView](classOf[Signal])
    private var tm             : TelephonyManager  = null

    class SignalStr(funct: (SignalStrength) ⇒ Unit) extends PhoneStateListener {
        override def onSignalStrengthsChanged(signalStr: SignalStrength) = funct(signalStr)
    }

    /**
     * Initialize the app.
     *
     * @param savedInstanceState - umm... the saved instance state
     */
    override def onCreate(savedInstanceState: Bundle) {
        super.onCreate(R.layout.radio_signal_fragment, savedInstanceState)

        val ss = new SignalStr((signalStrength: SignalStrength) ⇒ {
            if (signalStrength != null) {
                lazy val signalWrapper = new SignalArrayWrapper(signalStrength.toString)
                filteredSignals = signalWrapper.filterSignals(signalStrength.toString)
                displayDebugInfo(signalWrapper)
                displaySignalInfo(filteredSignals)
            }
        })
        
        tm = this.getSysService[TelephonyManager](Context.TELEPHONY_SERVICE)
        tm.listen(ss, PhoneStateListener.LISTEN_SIGNAL_STRENGTHS)
        sigInfoIds = getResources.obtainTypedArray(R.array.sigInfoIds)
        getSupportLoaderManager.initLoader(0, null, this)
        
        initClickEvents()
        setPhoneInfo()
    }
}