From da4ca06f5f9131c6992264bb1cfacc93898189de Mon Sep 17 00:00:00 2001
From: Jesse Bounds <jesse@rebounds.net>
Date: Fri, 29 Apr 2016 11:43:43 -0600
Subject: [PATCH] [ios] Disable annotation view implicit animation

Like https://github.com/mapbox/mapbox-gl-native/pull/3683, this
change prevents Core Animation from implicitly animating changes to the
annotation's bounds. This is done to reduce lag during map interactions
like pan and drag.
---
 platform/ios/src/MGLAnnotationView.m | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/platform/ios/src/MGLAnnotationView.m b/platform/ios/src/MGLAnnotationView.m
index e02ac499883..9fd173aa12e 100644
--- a/platform/ios/src/MGLAnnotationView.m
+++ b/platform/ios/src/MGLAnnotationView.m
@@ -9,4 +9,14 @@ @interface MGLAnnotationView ()
 
 @implementation MGLAnnotationView
 
+- (id<CAAction>)actionForLayer:(CALayer *)layer forKey:(NSString *)event
+{
+    // Allow mbgl to drive animation of this view’s bounds.
+    if ([event isEqualToString:@"bounds"])
+    {
+        return [NSNull null];
+    }
+    return [super actionForLayer:layer forKey:event];
+}
+
 @end
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