我用自定义的CollectionView作为tabPagerBar的item,里面有一个button,但是永远只能显示当前index的那个CollectionCell,另外两个frame为0

[shenguanjiejie]

配置代码如下: `_tabBar = [[TYTabPagerBar alloc]init]; _tabBar.layout.barStyle = TYPagerBarStyleNoneView; _tabBar.dataSource = self; _tabBar.delegate = self; _tabBar.layout.cellWidth = kScreenWidth / 3; _tabBar.layout.progressHeight = 0; _tabBar.layout.cellSpacing = 0; [_tabBar registerClass:[RJButtonCCell class] forCellWithReuseIdentifier:@"CELL"]; [self.view addSubview:_tabBar];

_pageController = [[TYPagerController alloc]init];
_pageController.layout.prefetchItemCount = 5;
_pageController.layout.progressAnimateEnabel = YES;

// pagerController.layout.autoMemoryCache = NO; // 只有当scroll滚动动画停止时才加载pagerview，用于优化滚动时性能 _pageController.layout.addVisibleItemOnlyWhenScrollAnimatedEnd = NO; _pageController.dataSource = self; _pageController.delegate = self; [self addChildViewController:_pageController]; [self.view addSubview:_pageController.view];

• (void)viewWillLayoutSubviews { [super viewWillLayoutSubviews]; _tabBar.frame = CGRectMake(0, 0, kScreenWidth, 70); _pageController.view.frame = CGRectMake(0, 70, kScreenWidth, kScreenHeight - 70); } 代理方法如下:

  pragma mark - TYTabPagerBarDataSource

• (NSInteger)numberOfItemsInPagerTabBar { return 3; }

• (UICollectionViewCell )pagerTabBar:(TYTabPagerBar )pagerTabBar cellForItemAtIndex:(NSInteger)index { UICollectionViewCell cell = [pagerTabBar dequeueReusableCellWithReuseIdentifier:@"CELL" forIndex:index]; RJButtonCCell buttonCell = (RJButtonCCell *)cell;

  if (index == 0) { [buttonCell.button setImage:kImageNamed(icon_main_personal_un) forState:UIControlStateNormal]; [buttonCell.button setImage:kImageNamed(icon_main_personal_se) forState:UIControlStateSelected]; }else if (index == 1){ [buttonCell.button setImage:kImageNamed(icon_main_people_un) forState:UIControlStateNormal]; [buttonCell.button setImage:kImageNamed(icon_main_people_se) forState:UIControlStateSelected]; }else{ [buttonCell.button setImage:kImageNamed(icon_main_chat_un) forState:UIControlStateNormal]; [buttonCell.button setImage:kImageNamed(icon_main_chat_se) forState:UIControlStateSelected]; }

  return cell; }

  pragma mark - TYPagerControllerDataSource

• (NSInteger)numberOfControllersInPagerController { return 3; }

• (UIViewController )pagerController:(TYPagerController )pagerController controllerForIndex:(NSInteger)index prefetching:(BOOL)prefetching { if (index%3 == 0) { SettingVC VC = [[SettingVC alloc]init]; VC.view.backgroundColor = [UIColor whiteColor]; return VC; }else if (index%3 == 1) { SettingVC VC = [[SettingVC alloc]init]; VC.view.backgroundColor = [UIColor redColor]; return VC; }else { SettingVC *VC = [[SettingVC alloc]init]; VC.view.backgroundColor = [UIColor blueColor]; return VC; } }

pragma mark - TYPagerControllerDelegate

• (void)pagerController:(TYPagerController *)pagerController transitionFromIndex:(NSInteger)fromIndex toIndex:(NSInteger)toIndex animated:(BOOL)animated { [_tabBar scrollToItemFromIndex:fromIndex toIndex:toIndex animate:animated]; }

-(void)pagerController:(TYPagerController *)pagerController transitionFromIndex:(NSInteger)fromIndex toIndex:(NSInteger)toIndex progress:(CGFloat)progress { [_tabBar scrollToItemFromIndex:fromIndex toIndex:toIndex progress:progress]; } `