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disable UIPageViewController's bounce #135

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disable UIPageViewController's bounce #135

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6 changes: 6 additions & 0 deletions Source/OnboardingViewController.h
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Original file line number Diff line number Diff line change
Expand Up @@ -102,6 +102,12 @@
@property (nonatomic) CGFloat underPageControlPadding;


/**
* @brief Determines whether or not disable UIPageViewController's bounce. The default value of this property is NO.
*/
@property (nonatomic) BOOL disableBounce;


/**
* @brief Convenience class initializer for onboarding with a backround image.
* @return An instance of OnboardingViewController with the provided background image and content view controllers.
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19 changes: 19 additions & 0 deletions Source/OnboardingViewController.m
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Original file line number Diff line number Diff line change
Expand Up @@ -94,6 +94,7 @@ - (instancetype)initWithContents:(NSArray *)contents {
self.fadePageControlOnLastPage = NO;
self.fadeSkipButtonOnLastPage = NO;
self.swipingEnabled = YES;
self.disableBounce = NO;

self.allowSkipping = NO;
self.skipHandler = ^{};
Expand Down Expand Up @@ -467,6 +468,24 @@ - (void)scrollViewDidScroll:(UIScrollView *)scrollView {
_skipButton.alpha = percentComplete;
}
}

if (self.disableBounce) {
if (_currentPage == self.viewControllers.firstObject && scrollView.contentOffset.x <= scrollView.bounds.size.width) {
scrollView.contentOffset = CGPointMake(scrollView.bounds.size.width, 0);
} else if (_currentPage == self.viewControllers.lastObject && scrollView.contentOffset.x >= scrollView.bounds.size.width) {
scrollView.contentOffset = CGPointMake(scrollView.bounds.size.width, 0);
}
}
}

- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset {
if (self.disableBounce) {
if (_currentPage == self.viewControllers.firstObject && scrollView.contentOffset.x <= scrollView.bounds.size.width) {
*targetContentOffset = CGPointMake(scrollView.bounds.size.width, 0);
} else if (_currentPage == self.viewControllers.lastObject && scrollView.contentOffset.x >= scrollView.bounds.size.width) {
*targetContentOffset = CGPointMake(scrollView.bounds.size.width, 0);
}
}
}


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