TYPagerController v2.0

CocoaPods

pod 'TYPagerController'

Requirements

ScreenShot

TYPagerBarStyle

API

Class

@interface TYPagerViewLayout<__covariant ItemType> : NSObject
@property (nonatomic, weak, nullable) id<TYPagerViewLayoutDataSource> dataSource;
@property (nonatomic, weak, nullable) id<TYPagerViewLayoutDelegate> delegate;
// strong,will control the delegate,don't set delegate on other place.
@property (nonatomic, strong, readonly) UIScrollView *scrollView;
// if viewcontroller's automaticallyAdjustsScrollViewInsets YES ,will cause frame problems, you can set YES, default YES
@property (nonatomic, assign) BOOL adjustScrollViewInset;
@property (nonatomic, assign, readonly) NSInteger countOfPagerItems;
@property (nonatomic, assign, readonly) NSInteger curIndex;// default -1
@property (nonatomic, strong, readonly) NSCache<NSNumber *,ItemType> *memoryCache;; // will cache pagerView,you can set countLimit
@property (nonatomic, assign) BOOL autoMemoryCache; // default YES
@property (nonatomic, assign) NSInteger prefetchItemCount;// preload left and right item's count , default 0
@property (nonatomic, assign, readonly) NSRange prefetchRange;
@property (nonatomic, assign, readonly) NSRange visibleRange;
@property (nonatomic, strong, nullable, readonly) NSArray<NSNumber *> * visibleIndexs;
@property (nonatomic, strong, nullable, readonly) NSArray<ItemType> * visibleItems;
// default YES, if NO,will not call delegate transitionFromIndex:toIndex:progress:,but will call transitionFromIndex:toIndex:
@property (nonatomic, assign) BOOL progressAnimateEnabel;
// default NO, when scroll visible range change will add item.If YES add item only when scroll animate end, suggest set prefetchItemCount 1 or more
@property (nonatomic, assign) BOOL addVisibleItemOnlyWhenScrollAnimatedEnd;
// default 0.5,when scroll progress percent will change index, only progressAnimateEnabel is NO or don't implement delegate transitionFromIndex: toIndex: progress:
@property (nonatomic, assign) CGFloat changeIndexWhenScrollProgress;

@interface TYPagerView : UIView
@property (nonatomic, weak, nullable) id<TYPagerViewDataSource> dataSource;
@property (nonatomic, weak, nullable) id<TYPagerViewDelegate> delegate;
// pagerView's layout,don't set layout's dataSource to other
@property (nonatomic, strong, readonly) TYPagerViewLayout<UIView *> *layout;
@property (nonatomic, strong, readonly) UIScrollView *scrollView;
@property (nonatomic, assign, readonly) NSInteger countOfPagerViews;
@property (nonatomic, assign, readonly) NSInteger curIndex;// default -1
@property (nonatomic, assign, nullable, readonly) NSArray<UIView *> *visibleViews;
@property (nonatomic, assign) UIEdgeInsets contentInset;
//if not visible, prefecth, cache view at index, return nil
- (UIView *_Nullable)viewForIndex:(NSInteger)index;
// register && dequeue's usage like tableView
- (void)registerClass:(Class)Class forViewWithReuseIdentifier:(NSString *)identifier;
- (void)registerNib:(UINib *)nib forViewWithReuseIdentifier:(NSString *)identifier;
- (UIView *)dequeueReusableViewWithReuseIdentifier:(NSString *)identifier forIndex:(NSInteger)index;
// scroll to index
- (void)scrollToViewAtIndex:(NSInteger)index animate:(BOOL)animate;
// update data and layout,but don't reset propertys(curIndex,visibleDatas,prefechDatas)
- (void)updateData;
// reload data and reset propertys
- (void)reloadData;

@protocol TYTabPagerControllerDelegate <TYPagerControllerDelegate>
// configre collectionview cell
- (void)pagerController:(TYTabPagerController *)pagerController configreCell:(UICollectionViewCell *)cell forItemTitle:(NSString *)title atIndexPath:(NSIndexPath *)indexPath;
// transition frome cell to cell with animated
- (void)pagerController:(TYTabPagerController *)pagerController transitionFromeCell:(UICollectionViewCell *)fromCell toCell:(UICollectionViewCell *)toCell animated:(BOOL)animated;
// transition frome cell to cell with progress
- (void)pagerController:(TYTabPagerController *)pagerController transitionFromeCell:(UICollectionViewCell *)fromCell toCell:(UICollectionViewCell *)toCell progress:(CGFloat)progress;
@end

@interface TYPagerController : UIViewController
@property (nonatomic, weak, nullable) id<TYPagerControllerDataSource> dataSource;
@property (nonatomic, weak, nullable) id<TYPagerControllerDelegate> delegate;
// pagerController's layout,don't set layout's dataSource to other
@property (nonatomic, strong, readonly) TYPagerViewLayout<UIViewController *> *layout;
@property (nonatomic, weak, readonly) UIScrollView *scrollView;
@property (nonatomic, assign, readonly) NSInteger countOfControllers;
@property (nonatomic, assign, readonly) NSInteger curIndex;// default -1
@property (nonatomic, strong, nullable, readonly) NSArray<UIViewController *> *visibleControllers;
@property (nonatomic, assign) UIEdgeInsets contentInset;
//if not visible, prefecth, cache view at index, return nil
- (UIViewController *_Nullable)controllerForIndex:(NSInteger)index;
// register && dequeue's usage like tableView
- (void)registerClass:(Class)Class forControllerWithReuseIdentifier:(NSString *)identifier;
- (void)registerNib:(UINib *)nib forControllerWithReuseIdentifier:(NSString *)identifier;
- (UIViewController *)dequeueReusableControllerWithReuseIdentifier:(NSString *)identifier forIndex:(NSInteger)index;
// scroll to index
- (void)scrollToControllerAtIndex:(NSInteger)index animate:(BOOL)animate;
// update data and layout,but don't reset propertys(curIndex,visibleDatas,prefechDatas)
- (void)updateData;
// reload data and reset propertys
- (void)reloadData;

- (void)addTabPagerView {
 TYTabPagerView *pagerView = [[TYTabPagerView alloc]init];
 pagerView.tabBar.layout.barStyle = TYPagerBarStyleCoverView;
 pagerView.tabBar.progressView.backgroundColor = [UIColor lightGrayColor];
 pagerView.dataSource = self;
 pagerView.delegate = self;
 [self.view addSubview:pagerView];
 _pagerView = pagerView;
}
#pragma mark - TYTabPagerViewDataSource
- (NSInteger)numberOfViewsInTabPagerView {
 return _datas.count;
}
- (UIView *)tabPagerView:(TYTabPagerView *)tabPagerView viewForIndex:(NSInteger)index prefetching:(BOOL)prefetching {
 UIView *view = [[UIView alloc]initWithFrame:[tabPagerView.layout frameForItemAtIndex:index]];
 view.backgroundColor = [UIColor colorWithRed:arc4random()%255/255.0 green:arc4random()%255/255.0 blue:arc4random()%255/255.0 alpha:arc4random()%255/255.0];
 //NSLog(@"viewForIndex:%ld prefetching:%d",index,prefetching);
 return view;
}
- (NSString *)tabPagerView:(TYTabPagerView *)tabPagerView titleForIndex:(NSInteger)index {
 NSString *title = _datas[index];
 return title;
}

@interface TabPagerControllerDemoController : TYTabPagerController
- (void)viewDidLoad {
 [super viewDidLoad];
 // Do any additional setup after loading the view.
 self.title = @"TabPagerControllerDemoController";
 self.tabBar.layout.barStyle = TYPagerBarStyleProgressView;
 self.dataSource = self;
 self.delegate = self;
 
 [self loadData];
}
- (void)loadData {
 _datas = [datas copy];
 // must call reloadData
 [self reloadData];
}
#pragma mark - TYTabPagerControllerDataSource
- (NSInteger)numberOfControllersInTabPagerController {
 return _datas.count;
}
- (UIViewController *)tabPagerController:(TYTabPagerController *)tabPagerController controllerForIndex:(NSInteger)index prefetching:(BOOL)prefetching {
 if (index%3 == 0) {
 CustomViewController *VC = [[CustomViewController alloc]init];
 VC.text = [@(index) stringValue];
 return VC;
 }else if (index%3 == 1) {
 ListViewController *VC = [[ListViewController alloc]init];
 VC.text = [@(index) stringValue];
 return VC;
 }else {
 CollectionViewController *VC = [[CollectionViewController alloc]init];
 VC.text = [@(index) stringValue];
 return VC;
 }
}
- (NSString *)tabPagerController:(TYTabPagerController *)tabPagerController titleForIndex:(NSInteger)index {
 NSString *title = _datas[index];
 return title;
}

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