implement map overlay logic

src/MapAct.scala

@@ -36,6 +36,8 @@ class MapAct extends MapActivity {
 		mapview.setBuiltInZoomControls(true)
 
 		locReceiver.startTask(null)
+		showObjects = prefs.getShowObjects()
+		mapview.setSatellite(prefs.getShowSatellite())
 		mapview.getOverlays().add(staoverlay)
 
 		// listen for new positions
@@ -58,15 +60,16 @@ class MapAct extends MapActivity {
 	override def onOptionsItemSelected(mi : MenuItem) : Boolean = {
 		mi.getItemId match {
 		case R.id.objects =>
-			mi.setChecked(!mi.isChecked())
-			showObjects = mi.isChecked()
+			val newState = prefs.toggleBoolean("show_objects", false)
+			mi.setChecked(newState)
+			showObjects = newState
 			loading.setVisibility(View.VISIBLE)
 			locReceiver.startTask(null)
-			mapview.invalidate()
 			true
 		case R.id.satellite =>
-			mi.setChecked(!mi.isChecked())
-			mapview.setSatellite(mi.isChecked())
+			val newState = prefs.toggleBoolean("show_satellite", false)
+			mi.setChecked(newState)
+			mapview.setSatellite(newState)
 			true
 		case _ => uihelper.optionsItemAction(mi)
 		}

src/PrefsWrapper.scala

@@ -24,6 +24,15 @@ class PrefsWrapper(val context : Context) {
 	}
 	def getCallSsid() = AprsPacket.formatCallSsid(getCallsign(), getString("ssid", ""))
 
+	def toggleBoolean(name : String, default : Boolean) = {
+		val new_val = !prefs.getBoolean(name, default)
+		android.util.Log.d("toggleBoolean", name + "=" + new_val)
+		prefs.edit().putBoolean(name, new_val).commit()
+		new_val
+	}
+	def getShowObjects() = prefs.getBoolean("show_objects", false)
+	def getShowSatellite() = prefs.getBoolean("show_satellite", false)
+	
 	// this is actually a hack!
 	def getVersion() = context.getString(R.string.build_version).split(" ").take(2).mkString(" ")
 

src/UIHelper.scala

@@ -128,6 +128,8 @@ class UIHelper(ctx : Activity, menu_id : Int, prefs : PrefsWrapper)
 			menu.findItem(id).setVisible(id != menu_id)
 		})
 		menu.findItem(R.id.overlays).setVisible(R.id.map == menu_id)
+		menu.findItem(R.id.objects).setChecked(prefs.getShowObjects())
+		menu.findItem(R.id.satellite).setChecked(prefs.getShowSatellite())
 		true
 	}