protected override void OnElementChanged(ElementChangedEventArgs <MapView> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
e.OldElement.AnnotationChanged -= Element_AnnotationChanged;
e.OldElement.TakeSnapshotFunc -= TakeMapSnapshot;
e.OldElement.GetFeaturesAroundPointFunc -= GetFeaturesAroundPoint;
if (map != null)
{
RemoveMapEvents();
}
}
if (e.NewElement == null)
{
return;
}
e.NewElement.AnnotationChanged += Element_AnnotationChanged;
if (Control == null)
{
var activity = (AppCompatActivity)Context;
var view = new Android.Widget.FrameLayout(activity)
{
Id = GenerateViewId()
};
SetNativeControl(view);
fragment = new MapViewFragment();
activity.SupportFragmentManager.BeginTransaction()
.Replace(view.Id, fragment)
.CommitAllowingStateLoss();
fragment.GetMapAsync(this);
currentCamera = new Position();
if (mapReady)
{
if (Element.Annotations != null)
{
AddAnnotations(Element.Annotations.ToArray());
if (Element.Annotations is INotifyCollectionChanged notifyCollection)
{
notifyCollection.CollectionChanged -= OnAnnotationsCollectionChanged;
notifyCollection.CollectionChanged += OnAnnotationsCollectionChanged;
}
}
OnMapRegionChanged();
}
}
}
protected override void OnElementChanged(
ElementChangedEventArgs <MapView> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
if (e.OldElement?.TakeSnapshotFunc != null)
{
// ReSharper disable once DelegateSubtraction
e.OldElement.TakeSnapshotFunc -= TakeMapSnapshot;
}
if (e.OldElement?.GetFeaturesAroundPointFunc != null)
{
// ReSharper disable once DelegateSubtraction
e.OldElement.GetFeaturesAroundPointFunc -= GetFeaturesAroundPoint;
}
}
if (e.NewElement == null)
{
return;
}
if (Control != null)
{
return;
}
var activity = (AppCompatActivity)Context;
var view = new Android.Widget.FrameLayout(activity)
{
Id = GenerateViewId()
};
SetNativeControl(view);
_fragment = new MapViewFragment();
activity.SupportFragmentManager.BeginTransaction()
.Replace(view.Id, _fragment)
.Commit();
_fragment.GetMapAsync(this);
_currentCamera = new Position();
}
protected override void OnElementChanged(ElementChangedEventArgs <MapView> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
e.OldElement.AnnotationsChanged -= Element_AnnotationsChanged;
e.OldElement.Functions = null;
if (map != null)
{
RemoveMapEvents();
}
}
if (e.NewElement == null)
{
return;
}
if (Control == null)
{
var activity = (AppCompatActivity)Context.GetActivity();
var view = new Android.Widget.FrameLayout(activity)
{
Id = GenerateViewId()
};
SetNativeControl(view);
fragment = MapViewFragment.Create(Element, Context);
activity.SupportFragmentManager
.BeginTransaction()
.Replace(view.Id, fragment)
.CommitAllowingStateLoss();
fragment.GetMapAsync(this);
currentCamera = new NxLatLng();
}
}
protected override void OnElementChanged(ElementChangedEventArgs <MapView> e)
{
base.OnElementChanged(e);
if (e.OldElement != null)
{
e.OldElement.AnnotationChanged -= Element_AnnotationChanged;
e.OldElement.TakeSnapshotFunc -= TakeMapSnapshot;
e.OldElement.GetFeaturesAroundPointFunc -= GetFeaturesAroundPoint;
if (map != null)
{
RemoveMapEvents();
}
}
if (e.NewElement == null)
{
return;
}
e.NewElement.AnnotationChanged += Element_AnnotationChanged;
if (Control == null)
{
var activity = (AppCompatActivity)Context;
if (e.NewElement.InsideFragment)
{
var view = new Android.Widget.FrameLayout(activity)
{
Id = GenerateViewId()
};
SetNativeControl(view);
fragment = new MapViewFragment();
activity.SupportFragmentManager.BeginTransaction()
.Replace(view.Id, fragment)
.CommitAllowingStateLoss();
fragment.GetMapAsync(this);
currentCamera = new Position();
}
else
{
this.mapView = new Sdk.Maps.MapView(activity);
this.mapView.SetStyleUrl(this.GetDefaultStyle());
// TODO: Call these lifecycle events in the correct place. They should be called from the
// Activity's respective methods, not from here. Idk what problems this could cause.
// Note: this is why the renderer originally used Fragments. They have their own lifecycles
// that are not tied to the main activity (which we only have one of because of Forms).
this.mapView.OnCreate(null);
this.mapView.OnStart();
this.mapView.OnResume();
this.SetNativeControl(this.mapView);
this.mapView.AddOnMapChangedListener(this);
this.mapView.GetMapAsync(this);
}
if (mapReady)
{
if (Element.Annotations != null)
{
AddAnnotations(Element.Annotations.ToArray());
if (Element.Annotations is INotifyCollectionChanged notifyCollection)
{
notifyCollection.CollectionChanged -= OnAnnotationsCollectionChanged;
notifyCollection.CollectionChanged += OnAnnotationsCollectionChanged;
}
}
OnMapRegionChanged();
}
}
}