本篇文章為大家展示了怎么在iOS中利用pageViewController實(shí)現(xiàn)多視圖滑動(dòng)切換,內(nèi)容簡明扼要并且容易理解,絕對(duì)能使你眼前一亮,通過這篇文章的詳細(xì)介紹希望你能有所收獲。
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思路1:使用嵌套,collectionview嵌套,每個(gè)item中添加內(nèi)容
思路2:使用scrollview 在上面創(chuàng)建一個(gè)一個(gè)的controller 實(shí)現(xiàn)左右滑動(dòng)
當(dāng)停留在第一頁的時(shí)候,點(diǎn)擊標(biāo)題欄第五頁,那么平移的過程就是第一頁到第五頁,所有的頁面從屏幕快速閃過,并且看到現(xiàn)在很多APP都是這樣的。在此之前我是用的思路2,為了避免跨頁面切換出現(xiàn)的中間幾個(gè)頁面閃過的過程,直接把平移動(dòng)畫關(guān)閉了。直到使用了uipageViewController,趕緊把項(xiàng)目中的給換掉了
代碼不多150行以內(nèi)
#import "ViewController.h"http:/// 當(dāng)前controller #import "MyViewController.h" /// 復(fù)用的controller 適用于每個(gè)控制器布局相同的情況下,,布局不同就創(chuàng)建不同的controller添加進(jìn)來 #import "TitleCollectionViewCell.h"http:/// 標(biāo)題欄使用的collectionviewcell @interface ViewController (){ //// 記錄當(dāng)前頁 當(dāng)前標(biāo)題位置 NSInteger ld_currentIndex; } @property (nonatomic, strong) UIPageViewController *pageViewController; @property (nonatomic, strong) NSMutableArray *controllersArr;/// 控制器數(shù)組 @property (nonatomic, strong) NSMutableArray *titleArray; /// 標(biāo)題數(shù)組 @property (nonatomic, strong) UICollectionView *titleCollectionView; /// 標(biāo)題collectionview @end @implementation ViewController - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor whiteColor]; self.navigationController.navigationBar.translucent = NO; self.controllersArr = [NSMutableArray array]; self.titleArray = [NSMutableArray array]; //// 如果controller布局相同則循環(huán)創(chuàng)建MyViewController 添加進(jìn)數(shù)組,,如果controller 布局不同 那就創(chuàng)建多個(gè)不同controller依次添加數(shù)組 for (int i = 0; i < 10; i++) { MyViewController *con = [[MyViewController alloc]init]; [self.controllersArr addObject:con]; NSString *str = [NSString stringWithFormat:@"第 %d 頁", i+1]; con.titlestring = str; [self.titleArray addObject:str]; } [self createCollectionView]; [self createPageViewController]; [self setTheFirstPage]; } /// 創(chuàng)建標(biāo)題collectionview - (void)createCollectionView{ UICollectionViewFlowLayout *lay = [[UICollectionViewFlowLayout alloc] init]; lay.itemSize = CGSizeMake(60, 30); lay.minimumLineSpacing = 0; lay.minimumInteritemSpacing = 0; lay.scrollDirection = UICollectionViewScrollDirectionHorizontal; self.titleCollectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 34, 375, 30) collectionViewLayout:lay]; self.titleCollectionView.showsHorizontalScrollIndicator = NO; self.titleCollectionView.backgroundColor = [UIColor whiteColor]; self.titleCollectionView.delegate = self; self.titleCollectionView.dataSource = self; [self.titleCollectionView registerClass:[TitleCollectionViewCell class] forCellWithReuseIdentifier:@"titleReuse"]; [self.navigationController.view addSubview:self.titleCollectionView]; } //// 標(biāo)題collectionview的協(xié)議方法 - (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{ return self.titleArray.count; } - (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath { TitleCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:@"titleReuse" forIndexPath:indexPath]; cell.titleLabel.text = self.titleArray[indexPath.row]; if (indexPath.row == ld_currentIndex) { cell.titleLabel.textColor = [UIColor orangeColor]; }else{ cell.titleLabel.textColor = [UIColor blackColor]; } return cell; } //// 點(diǎn)擊標(biāo)題左右切換視圖控制器------------再也不用看到好幾個(gè)中間頁面從屏幕快速閃過了------ - (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{ UIViewController *vc = [self.controllersArr objectAtIndex:indexPath.row]; if (indexPath.row > ld_currentIndex) { [self.pageViewController setViewControllers:@[vc] direction:UIPageViewControllerNavigationDirectionForward animated:YES completion:^(BOOL finished) { }]; } else { [self.pageViewController setViewControllers:@[vc] direction:UIPageViewControllerNavigationDirectionReverse animated:YES completion:^(BOOL finished) { }]; } ld_currentIndex = indexPath.row; NSIndexPath *path = [NSIndexPath indexPathForRow:ld_currentIndex inSection:0]; [self.titleCollectionView scrollToItemAtIndexPath:path atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:YES]; [self.titleCollectionView reloadData]; } /// 創(chuàng)建pageViewController - (void)createPageViewController { NSDictionary *option = [NSDictionary dictionaryWithObject:[NSNumber numberWithInteger:0] forKey:UIPageViewControllerOptionInterPageSpacingKey]; _pageViewController = [[UIPageViewController alloc]initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:option]; _pageViewController.delegate = self; _pageViewController.dataSource = self; [self addChildViewController:_pageViewController]; [self.view addSubview:_pageViewController.view]; } /// 展示上一頁 - (nullable UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController { NSInteger index = [self.controllersArr indexOfObject:viewController]; if (index == 0 || (index == NSNotFound)) { return nil; } index--; return [self.controllersArr objectAtIndex:index]; } /// 展示下一頁 - (nullable UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController { NSInteger index = [self.controllersArr indexOfObject:viewController]; if (index == self.controllersArr.count - 1 || (index == NSNotFound)) { return nil; } index++; return [self.controllersArr objectAtIndex:index]; } /// 將要滑動(dòng)切換的時(shí)候 - (void)pageViewController:(UIPageViewController *)pageViewController willTransitionToViewControllers:(NSArray *)pendingViewControllers { UIViewController *nextVC = [pendingViewControllers firstObject]; NSInteger index = [self.controllersArr indexOfObject:nextVC]; ld_currentIndex = index; } /// 滑動(dòng)結(jié)束后 - (void)pageViewController:(UIPageViewController *)pageViewController didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray *)previousViewControllers transitionCompleted:(BOOL)completed { if (completed) { NSIndexPath *path = [NSIndexPath indexPathForRow:ld_currentIndex inSection:0]; [self.titleCollectionView scrollToItemAtIndexPath:path atScrollPosition:UICollectionViewScrollPositionCenteredHorizontally animated:YES]; [self.titleCollectionView reloadData]; NSLog(@">>>>>>>>> %ld", (long)ld_currentIndex); } } /// 設(shè)置默認(rèn)顯示的是哪個(gè)頁面(controller) - (void)setTheFirstPage{ UIViewController *vc = [self.controllersArr objectAtIndex:ld_currentIndex]; [self.pageViewController setViewControllers:@[vc] direction:UIPageViewControllerNavigationDirectionReverse animated:YES completion:nil]; } - (void)didReceiveMemoryWarning { [super didReceiveMemoryWarning]; // Dispose of any resources that can be recreated. } TitleCollectionViewCell @implementation TitleCollectionViewCell - (instancetype)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { [self createView]; } return self; } - (void)createView{ self.titleLabel = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, self.contentView.frame.size.width, self.contentView.frame.size.height)]; [self.contentView addSubview:self.titleLabel]; self.titleLabel.font = [UIFont systemFontOfSize:14]; } @end
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