[ios] Check for valid superview to avoid crash on iOS 9 (#14529)

mapbox · Apr 30, 2019 · b15b783 · b15b783
1 parent 0fcab65
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diff --git a/platform/ios/CHANGELOG.md b/platform/ios/CHANGELOG.md
@@ -8,6 +8,7 @@ Mapbox welcomes participation and contributions from everyone. Please read [CONT
 * Fix a bug that wrong position of attribution dialog after rotation. ([#14185](https://github.com/mapbox/mapbox-gl-native/pull/14185))
 * Fixed a bug with jittery callout views when using sprite-based annotations. ([#14445](https://github.com/mapbox/mapbox-gl-native/pull/14445))
 * Improved `MGLLocationManager` optional protocol properties briding to Swift. ([#14477](https://github.com/mapbox/mapbox-gl-native/pull/14477))
+* Fixed a layout constraints crash on iOS 9 when a view is removed from its superview. ([#14529](https://github.com/mapbox/mapbox-gl-native/pull/14529))
 
 ## 4.10.0 - April 17, 2019
 

diff --git a/platform/ios/src/MGLMapView.mm b/platform/ios/src/MGLMapView.mm
@@ -1377,7 +1377,10 @@ - (void)didMoveToWindow
 - (void)didMoveToSuperview
 {
     [self validateDisplayLink];
-    [self installConstraints];
+    if (self.superview)
+    {
+        [self installConstraints];
+    }
     [super didMoveToSuperview];
 }