protected override void Dispose(bool disposing)
{
if (disposing)
{
if (Map != null)
{
Map.OnSnapshot -= OnSnapshot;
foreach (var logic in _logics)
{
logic.Unregister(NativeMap, Map);
}
}
_cameraLogic.Unregister();
_uiSettingsLogic.Unregister();
var mkMapView = (MapView)Control;
if (mkMapView != null)
{
mkMapView.CoordinateLongPressed -= CoordinateLongPressed;
mkMapView.CoordinateTapped -= CoordinateTapped;
mkMapView.CameraPositionChanged -= CameraPositionChanged;
mkMapView.DidTapMyLocationButton = null;
}
}
base.Dispose(disposing);
}
protected override async void OnElementChanged(ElementChangedEventArgs <Map> e)
{
base.OnElementChanged(e);
var oldMapView = (MapControl)Control;
if (e.OldElement != null)
{
var mapModel = e.OldElement;
mapModel.OnSnapshot -= OnSnapshot;
_cameraLogic.Unregister();
_uiSettingsLogic.Unregister();
if (oldMapView != null)
{
oldMapView.ActualCameraChanged -= OnActualCameraChanged;
oldMapView.ZoomLevelChanged -= OnZoomLevelChanged;
oldMapView.CenterChanged -= Control_CenterChanged;
}
}
if (e.NewElement != null)
{
var mapModel = e.NewElement;
if (Control == null)
{
SetNativeControl(new MapControl());
Control.MapServiceToken = FormsGoogleMaps.AuthenticationToken;
Control.TrafficFlowVisible = Map.IsTrafficEnabled;
Control.ZoomLevelChanged += OnZoomLevelChanged;
Control.CenterChanged += Control_CenterChanged;
Control.ActualCameraChanged += OnActualCameraChanged;
}
_cameraLogic.Register(Map, NativeMap);
Map.OnSnapshot += OnSnapshot;
_uiSettingsLogic.Register(Map, NativeMap);
_uiSettingsLogic.Initialize();
UpdateMapType();
UpdateHasScrollEnabled();
UpdateHasZoomEnabled();
UpdateHasRotationEnabled();
await UpdateIsShowingUser(Element.MyLocationEnabled);
foreach (var logic in _logics)
{
logic.Register(oldMapView, e.OldElement, NativeMap, Map);
logic.RestoreItems();
logic.OnMapPropertyChanged(new PropertyChangedEventArgs(Map.SelectedPinProperty.PropertyName));
}
}
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
_cameraLogic.Unregister();
foreach (var logic in _logics)
{
logic.Unregister(NativeMap, Map);
}
var mkMapView = (MapView)Control;
mkMapView.CoordinateLongPressed -= CoordinateLongPressed;
mkMapView.CoordinateTapped -= CoordinateTapped;
mkMapView.CameraPositionChanged -= CameraPositionChanged;
mkMapView.DidTapMyLocationButton = null;
}
base.Dispose(disposing);
}
private void Uninitialize(Android.Gms.Maps.GoogleMap nativeMap, Map map)
{
try
{
if (nativeMap == null)
{
System.Diagnostics.Debug.WriteLine($"Uninitialize failed - {nameof(nativeMap)} is null");
return;
}
if (map == null)
{
System.Diagnostics.Debug.WriteLine($"Uninitialize failed - {nameof(map)} is null");
return;
}
_uiSettingsLogic.Unregister();
map.OnSnapshot -= OnSnapshot;
_cameraLogic.Unregister();
foreach (var logic in _logics)
{
logic.Unregister(nativeMap, map);
}
if (Map.IsUseCluster)
{
_clusterLogic.Unregister(nativeMap, map);
}
nativeMap.SetOnMapClickListener(null);
nativeMap.SetOnMapLongClickListener(null);
nativeMap.SetOnMyLocationButtonClickListener(null);
nativeMap.MyLocationEnabled = false;
nativeMap.Dispose();
}
catch (System.Exception ex)
{
var message = ex.Message;
System.Diagnostics.Debug.WriteLine($"Uninitialize failed. - {message}");
}
}
protected override async void OnElementChanged(ElementChangedEventArgs <View> e)
{
base.OnElementChanged(e);
// For XAML Previewer or FormsGoogleMaps.Init not called.
if (!FormsGoogleMaps.IsInitialized)
{
var tv = new TextView(Context)
{
Gravity = GravityFlags.Center,
Text = "Xamarin.Forms.GoogleMaps"
};
tv.SetBackgroundColor(Color.Teal.ToAndroid());
tv.SetTextColor(Color.Black.ToAndroid());
SetNativeControl(tv);
return;
}
var oldMapView = (MapView)Control;
var mapView = new MapView(Context);
mapView.OnCreate(s_bundle);
mapView.OnResume();
SetNativeControl(mapView);
var activity = Context as Activity;
if (activity != null)
{
var metrics = new DisplayMetrics();
activity.WindowManager.DefaultDisplay.GetMetrics(metrics);
foreach (var logic in _logics)
{
logic.ScaledDensity = metrics.ScaledDensity;
}
_cameraLogic.ScaledDensity = metrics.ScaledDensity;
}
if (e.OldElement != null)
{
var oldMapModel = (Map)e.OldElement;
_cameraLogic.Unregister();
var oldGoogleMap = await oldMapView.GetGoogleMapAsync();
if (oldGoogleMap != null)
{
oldGoogleMap.SetOnCameraChangeListener(null);
oldGoogleMap.SetOnMapClickListener(null);
oldGoogleMap.SetOnMapLongClickListener(null);
oldGoogleMap.SetOnMyLocationButtonClickListener(null);
}
oldMapView.Dispose();
}
if (oldMapView != null)
{
_oldNativeMap = await oldMapView.GetGoogleMapAsync();
_oldMap = (Map)e.OldElement;
}
NativeMap = await((MapView)Control).GetGoogleMapAsync();
_cameraLogic.Register(Map, NativeMap);
OnMapReady(NativeMap);
}
