Preface
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The Standard Way to Write HitTest
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- (UIView *)hitTest:(CGPoint)point withEvent:(UIEvent *)event
{
if (!self.isUserInteractionEnabled || self.isHidden || self.alpha <= 0.01)
{
return nil;
}
if ([self pointInside:point withEvent:event])
{
for (UIView *subview in [self.subviews reverseObjectEnumerator])
{
CGPoint convertedPoint = [subview convertPoint:point fromView:self];
UIView *hitTestView = [subview hitTest:convertedPoint withEvent:event];
if (hitTestView)
{
if (hitTestView.superview == self)
{
// None of self's subviews should respond to events
return nil;
}
return hitTestView;
}
}
return nil;
}
return nil;
}
Summary
Recorded a problem that came up during code review; this is the standard way to write hitTest.