【移动应用开发技术】怎么在iOS中利用pageViewController实现多视图滑动切换

【移动应用开发技术】怎么在iOS中利用pageViewController实现多视图滑动切换

本篇文章为大家展示了怎么在iOS中利用pageViewController实现多视图滑动切换，内容简明扼要并且容易理解，绝对能使你眼前一亮，通过这篇文章的详细介绍希望你能有所收获。思路1：使用嵌套，collectionview嵌套，每个item中添加内容思路2：使用scrollview在上面创建一个一个的controller实现左右滑动当停留在第一页的时候，点击标题栏第五页，那么平移的过程就是第一页到第五页，所有的页面从屏幕快速闪过，并且看到现在很多APP都是这样的。在此之前我是用的思路2，为了避免跨页面切换出现的中间几个页面闪过的过程，直接把平移动画关闭了。直到使用了uipageViewController，赶紧把项目中的给换掉了代码不多150行以内#import

"ViewController.h"///

当前controller

#import

"MyViewController.h"

///

复用的controller

适用于每个控制器布局相同的情况下，，布局不同就创建不同的controller添加进来

#import

"TitleCollectionViewCell.h"///

标题栏使用的collectionviewcell

@interface

ViewController

()<UIPageViewControllerDelegate,UIPageViewControllerDataSource,UICollectionViewDelegate,UICollectionViewDataSource>{

////

记录当前页

当前标题位置

NSInteger

ld_currentIndex;

}

@property

(nonatomic,

strong)

UIPageViewController

*pageViewController;

@property

(nonatomic,

strong)

NSMutableArray

*controllersArr;///

控制器数组

@property

(nonatomic,

strong)

NSMutableArray

*titleArray;

///

标题数组

@property

(nonatomic,

strong)

UICollectionView

*titleCollectionView;

///

标题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布局相同则循环创建MyViewController

添加进数组，，如果controller

布局不同

那就创建多个不同controller依次添加数组

for

(int

i

=

0;

i

<

10;

i++)

{

MyViewController

*con

=

[[MyViewController

alloc]init];

[self.controllersArr

addObject:con];

NSString

*str

=

[NSString

stringWithFormat:@"第

%d

页",

i+1];

con.titlestring

=

str;

[self.titleArray

addObject:str];

}

[self

createCollectionView];

[self

createPageViewController];

[self

setTheFirstPage];

}

///

创建标题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];

}

////

标题collectionview的协议方法

-

(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;

}

////

点击标题左右切换视图控制器再也不用看到好几个中间页面从屏幕快速闪过了

-

(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];

}

///

创建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];

}

///

展示上一页

-

(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];

}

///

展示下一页

-

(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];

}

///

将要滑动切换的时候

-

(void)pageViewController:(UIPageViewController

*)pageViewController

willTransitionToViewControllers:(NSArray<UIViewController

*>

*)pendingViewControllers

{

UIViewController

*nextVC

=

[pendingViewControllers

firstObject];

NSInteger

index

=

[self.controllersArr

indexOfObject:nextVC];

ld_currentIndex

=

index;

}

///

滑动结束后

-

(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);

}

}

///

设置默认显示的是哪个页面（controller）

-

(void)setTheFirstPage{

UIViewController

*vc

=

[self.controllersArr

objectAtIndex:ld_currentIndex];

[self.