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Fixed behavior of ASControlNode when -touchesEnded:withEvent: sometimes firing twice.

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This commit is contained in:
Viet Hoa Dinh 2016-01-13 17:37:13 -08:00
parent 516e1f177d
commit dbe068c970
1 changed files with 8 additions and 0 deletions
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8
AsyncDisplayKit/ASControlNode.m
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@ -170,6 +170,14 @@ void _ASEnumerateControlEventsIncludedInMaskWithBlock(ASControlNodeEvent mask, v
if (!self.enabled)
return;
// On iPhone 6s, iOS 9.2 (and maybe other versions) sometimes calls -touchesEnded:withEvent:
// twice on the view for one call to -touchesBegan:withEvent:. On ASControlNode, it used to
// trigger an action twice unintentionally. Now, we ignore that event if we're not in a tracking
// state in order to have a correct behavior.
// It might be related to that issue: http://www.openradar.me/22910171
if (!self.tracking)
return;
NSParameterAssert([touches count] == 1);
UITouch *theTouch = [touches anyObject];
CGPoint touchLocation = [theTouch locationInView:self.view];