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fix: adjust segment position after layout #24

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fix: adjust segment position after layout #24

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8 changes: 7 additions & 1 deletion LUNSegmentedControl/LUNSegmentedControl/LUNSegmentedControl/LUNSegmentedControl.m
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Original file line number Diff line number Diff line change
Expand Up @@ -32,6 +32,7 @@ @interface LUNSegmentedControl() <UIScrollViewDelegate, UIGestureRecognizerDeleg
@property (nonatomic, strong) NSMutableArray <NSLayoutConstraint *> *addedConstraintsToRemove;
@property (nonatomic, assign) BOOL viewWasLayoutSubviews;
@property (nonatomic, assign) BOOL layoutDependentValuesWasUpdated;
@property (nonatomic, assign) BOOL layoutAfterScrolling;

@end

Expand Down Expand Up @@ -68,9 +69,10 @@ - (void)layoutSubviews {
[super layoutSubviews];
[self layoutIfNeeded];
self.viewWasLayoutSubviews = YES;
if (!self.layoutDependentValuesWasUpdated) {
if (!self.layoutDependentValuesWasUpdated || self.layoutAfterScrolling) {
[self updateLayoutDependentValues];
}
self.layoutAfterScrolling = YES;
}

#pragma mark - Init defaults
Expand Down Expand Up @@ -727,7 +729,10 @@ - (void)reloadData {
}
}
- (void)updateLayoutDependentValues {
int state = self.currentState;
self.currentState = 0;
self.currentState = self.statesCount-1;
self.currentState = state;
self.layoutDependentValuesWasUpdated = YES;
}

Expand Down Expand Up @@ -787,6 +792,7 @@ - (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView {
self.userInteractionEnabled = YES;
}
- (void)scrollViewDidScroll:(UIScrollView *)scrollView {
self.layoutAfterScrolling = NO;
if ([self.delegate respondsToSelector:@selector(segmentedControl:didScrollWithXOffset:)]) {
[self.delegate segmentedControl:self didScrollWithXOffset:self.frame.size.width - self.scrollView.contentOffset.x - self.selectorView.frame.size.width];
}
Expand Down