How to prevent custom MKAnnotationViews from reverting back to using the default color and glyph image?
I have a few MKMapViews on separate tabs of a UITabBarController. Each map uses custom MKAnnotationViews for MKAnnotations and MKClusterAnnotations. The custom MKAnnotationViews are green with star glyph or green with a number if it's for a cluster.
The problem is that my custom MKAnnotationViews are randomly reverting back to the default appearance of red with a pin glyph. When I zoom in, the views will start to redraw and be right. I haven't been able to consistently reproduce the issue, but it seems to occur when I navigate away from a tab then return.
Is there a way to force a reload on map view similar to reloadData() on a collection view? My viewForAnnotation func shouldn't ever return nil so I don't know how this could be happening.
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
var view = mapView.dequeueReusableAnnotationView(withIdentifier: "CustomAnnotationView") as? CustomAnnotationView
if view == nil {
view = CustomAnnotationView(annotation: annotation, reuseIdentifier: "CustomAnnotationView")
} else {
view?.annotation = annotation
}
return view
// code for the cluster annotations redacted
}
ios mapkit mkmapview mkannotation mkannotationview
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
add a comment |
I have a few MKMapViews on separate tabs of a UITabBarController. Each map uses custom MKAnnotationViews for MKAnnotations and MKClusterAnnotations. The custom MKAnnotationViews are green with star glyph or green with a number if it's for a cluster.
The problem is that my custom MKAnnotationViews are randomly reverting back to the default appearance of red with a pin glyph. When I zoom in, the views will start to redraw and be right. I haven't been able to consistently reproduce the issue, but it seems to occur when I navigate away from a tab then return.
Is there a way to force a reload on map view similar to reloadData() on a collection view? My viewForAnnotation func shouldn't ever return nil so I don't know how this could be happening.
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
var view = mapView.dequeueReusableAnnotationView(withIdentifier: "CustomAnnotationView") as? CustomAnnotationView
if view == nil {
view = CustomAnnotationView(annotation: annotation, reuseIdentifier: "CustomAnnotationView")
} else {
view?.annotation = annotation
}
return view
// code for the cluster annotations redacted
}
ios mapkit mkmapview mkannotation mkannotationview
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
Addif annotation is MKUserLocation { return nil }toviewFor annotationmethod.
– Kosuke Ogawa
Nov 14 '18 at 4:01
@KosukeOgawa thanks for the response! However, the problem persists even with that line included.
– Camden Gaba
Nov 14 '18 at 19:02
add a comment |
I have a few MKMapViews on separate tabs of a UITabBarController. Each map uses custom MKAnnotationViews for MKAnnotations and MKClusterAnnotations. The custom MKAnnotationViews are green with star glyph or green with a number if it's for a cluster.
The problem is that my custom MKAnnotationViews are randomly reverting back to the default appearance of red with a pin glyph. When I zoom in, the views will start to redraw and be right. I haven't been able to consistently reproduce the issue, but it seems to occur when I navigate away from a tab then return.
Is there a way to force a reload on map view similar to reloadData() on a collection view? My viewForAnnotation func shouldn't ever return nil so I don't know how this could be happening.
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
var view = mapView.dequeueReusableAnnotationView(withIdentifier: "CustomAnnotationView") as? CustomAnnotationView
if view == nil {
view = CustomAnnotationView(annotation: annotation, reuseIdentifier: "CustomAnnotationView")
} else {
view?.annotation = annotation
}
return view
// code for the cluster annotations redacted
}
ios mapkit mkmapview mkannotation mkannotationview
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
I have a few MKMapViews on separate tabs of a UITabBarController. Each map uses custom MKAnnotationViews for MKAnnotations and MKClusterAnnotations. The custom MKAnnotationViews are green with star glyph or green with a number if it's for a cluster.
The problem is that my custom MKAnnotationViews are randomly reverting back to the default appearance of red with a pin glyph. When I zoom in, the views will start to redraw and be right. I haven't been able to consistently reproduce the issue, but it seems to occur when I navigate away from a tab then return.
Is there a way to force a reload on map view similar to reloadData() on a collection view? My viewForAnnotation func shouldn't ever return nil so I don't know how this could be happening.
func mapView(_ mapView: MKMapView, viewFor annotation: MKAnnotation) -> MKAnnotationView? {
var view = mapView.dequeueReusableAnnotationView(withIdentifier: "CustomAnnotationView") as? CustomAnnotationView
if view == nil {
view = CustomAnnotationView(annotation: annotation, reuseIdentifier: "CustomAnnotationView")
} else {
view?.annotation = annotation
}
return view
// code for the cluster annotations redacted
}
ios mapkit mkmapview mkannotation mkannotationview
ios mapkit mkmapview mkannotation mkannotationview
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
edited Nov 14 '18 at 19:03
Camden Gaba
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
asked Nov 13 '18 at 20:49
Camden GabaCamden Gaba
814
814
Addif annotation is MKUserLocation { return nil }toviewFor annotationmethod.
– Kosuke Ogawa
Nov 14 '18 at 4:01
@KosukeOgawa thanks for the response! However, the problem persists even with that line included.
– Camden Gaba
Nov 14 '18 at 19:02
add a comment |
Addif annotation is MKUserLocation { return nil }toviewFor annotationmethod.
– Kosuke Ogawa
Nov 14 '18 at 4:01
@KosukeOgawa thanks for the response! However, the problem persists even with that line included.
– Camden Gaba
Nov 14 '18 at 19:02
Add
if annotation is MKUserLocation { return nil } to viewFor annotation method.– Kosuke Ogawa
Nov 14 '18 at 4:01
Add
if annotation is MKUserLocation { return nil } to viewFor annotation method.– Kosuke Ogawa
Nov 14 '18 at 4:01
@KosukeOgawa thanks for the response! However, the problem persists even with that line included.
– Camden Gaba
Nov 14 '18 at 19:02
@KosukeOgawa thanks for the response! However, the problem persists even with that line included.
– Camden Gaba
Nov 14 '18 at 19:02
add a comment |
1 Answer
1
active
oldest
votes
Problem solved. I, apparently, needed to style the markers in the prepareForReuse function on the cluster subclasses.
override func prepareForReuse() {
super.prepareForReuse()
style()
}
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
add a comment |
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1 Answer
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votes
1 Answer
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active
oldest
votes
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oldest
votes
active
oldest
votes
Problem solved. I, apparently, needed to style the markers in the prepareForReuse function on the cluster subclasses.
override func prepareForReuse() {
super.prepareForReuse()
style()
}
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
add a comment |
Problem solved. I, apparently, needed to style the markers in the prepareForReuse function on the cluster subclasses.
override func prepareForReuse() {
super.prepareForReuse()
style()
}
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
add a comment |
Problem solved. I, apparently, needed to style the markers in the prepareForReuse function on the cluster subclasses.
override func prepareForReuse() {
super.prepareForReuse()
style()
}
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
Problem solved. I, apparently, needed to style the markers in the prepareForReuse function on the cluster subclasses.
override func prepareForReuse() {
super.prepareForReuse()
style()
}
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
edited Nov 16 '18 at 17:42
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
answered Nov 14 '18 at 20:25
Camden GabaCamden Gaba
814
814
add a comment |
add a comment |
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Add
if annotation is MKUserLocation { return nil }toviewFor annotationmethod.– Kosuke Ogawa
Nov 14 '18 at 4:01
@KosukeOgawa thanks for the response! However, the problem persists even with that line included.
– Camden Gaba
Nov 14 '18 at 19:02