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本篇文章為大家展示了怎么在iOS中利用pageViewController實現多視圖滑動切換，內容簡明扼要并且容易理解，絕對能使你眼前一亮，通過這篇文章的詳細介紹希望你能有所收獲。
思路1：使用嵌套，collectionview嵌套，每個item中添加內容
思路2：使用scrollview 在上面創建一個一個的controller 實現左右滑動
當停留在第一頁的時候，點擊標題欄第五頁，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的中間幾個頁面閃過的過程，直接把平移動畫關閉了。直到使用了uipageViewController，趕緊把項目中的給換掉了
代碼不多150行以內
#import "ViewController.h"/// 當前controller
#import "MyViewController.h" /// 復用的controller 適用于每個控制器布局相同的情況下，，布局不同就創建不同的controller添加進來
#import "TitleCollectionViewCell.h"/// 標題欄使用的collectionviewcell
@interface ViewController ()<UIPageViewControllerDelegate,UIPageViewControllerDataSource,UICollectionViewDelegate,UICollectionViewDataSource>{
//// 記錄當前頁 當前標題位置
NSInteger ld_currentIndex;
}
@property (nonatomic, strong) UIPageViewController *pageViewController;
@property (nonatomic, strong) NSMutableArray *controllersArr;/// 控制器數組
@property (nonatomic, strong) NSMutableArray *titleArray; /// 標題數組
@property (nonatomic, strong) UICollectionView *titleCollectionView; /// 標題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布局相同則循環創建MyViewController 添加進數組，，如果controller 布局不同 那就創建多個不同controller依次添加數組
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];
}
/// 創建標題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];
}
//// 標題collectionview的協議方法
- (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;
}
//// 點擊標題左右切換視圖控制器------------再也不用看到好幾個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];
}
/// 將要滑動切換的時候
- (void)pageViewController:(UIPageViewController *)pageViewController willTransitionToViewControllers:(NSArray<UIViewController *> *)pendingViewControllers {
UIViewController *nextVC = [pendingViewControllers firstObject];
NSInteger index = [self.controllersArr indexOfObject:nextVC];
ld_currentIndex = index;
}
/// 滑動結束后
- (void)pageViewController:(UIPageViewController *)pageViewController didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray<UIViewController *> *)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);
}
}
/// 設置默認顯示的是哪個頁面（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上述內容就是怎么在iOS中利用pageViewController實現多視圖滑動切換，你們學到知識或技能了嗎？如果還想學到更多技能或者豐富自己的知識儲備，歡迎關注億速云行業資訊頻道。
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