Fixed a race condition in which the access token alert controller would fail to present because the view controller hadn’t yet entered the view hierarchy, plus a downstream crash caused by the access token being missing.
Copyedited installation documentation to make sense to less experienced Xcode users, ensure consistency, remove redundant language, and reflect recent build changes.
If a subclass of MGLMapView registers itself as an observer of a non-multipoint annotation’s coordinate key path but fails to handle the change in its -observeValueForKeyPath:ofObject:change:context: implementation, the context would likely be a value other than the annotation’s tag. In that case, avoid doing anything in response to the coordinate changing. Even if the context in that case happens to match the annotation’s tag – say, because the developer passed in NULL (which is equal to 0) for the first added annotation (which would have a tag of 0) – the result would be an unnecessary but harmless update.
There’s no point observing the coordinate key path on MGLMultiPoint, since that property is immutable. Use the observation context instead of performing an annotation tag lookup when a coordinate has changed.
Fixed a crash removing a polyline or polygon by observing the coordinate key path on all annotations, not just non-MGLMultiPoints.
Pass in the annotation tag as the observation context. This fixes a crash when an annotation is added to the map view more than once, then removed more than once.
Replaced Markdown syntax with HTML syntax for hyperlinks in documentation comments. HTML links work both inside Xcode (whether Objective-C or Swift) and on the Web (via jazzy).
Fixes#3961.
MGLMapView observes changes to the coordinate property of each MGLAnnotation added to it. Changing the coordinate property in a KVO-compliant way causes the annotation to be relocated and its callout view, if present, to be dismissed. To avoid observing the same annotation twice yet also avoid expensive lookups when adding or removing annotations, MGLMapView indexes added point annotations in an NSMutableSet.
