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一、引言
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UIPageViewController是iOS中少见的动画视图控制器之一,通过它既可以创建类似UIScrollView与UIPageControl结合的滚屏视图,也可以创建类似图书效果的炫酷翻页视图。
UIPageViewController在iOS 5 SDK中首次引入,它使得开发者可以使用这个ViewController创建分页视图。在iOS 6中,这个类有了更新,支持滚动过渡效果。使用Page View,用户可以方便的通过手势在多个页面之间导航。UIPageViewController并不仅仅用于引导页,很多游戏,例如:愤怒的小鸟,就是用Page View来展示关卡选择的页面,还有有关书籍的应用,用这个类来显示书的页面。
UIPageViewController是个高度可配置的类,你可以进行如下配置:
分页的方向——水平或垂直 翻页的样式——书卷翻页或者滑动翻页 书脊位置——只有书卷翻页样式有效 页面间距——只有滑动翻页样式有效,用来定义页面间距(inter-page spacing)
UIPageViewController类似一个视图容器,其中每个具体的视图由各自的ViewController进行维护管理,UIPageViewController只进行协调与动画布置。下图可以很好的展现出UIPageViewControlelr的使用结构:
上图中,UIPageViewControllerDataSource协议为UIPageViewController提供数据支持,DataSource协议提供的数据来自各个ViewContoller自行维护,UIPageViewControllerDelegate中的回调可以对翻页动作,屏幕旋转动作等进行监听。UIPageViewController把从DataSource中获取到的视图数据渲染给View用于当前视图控制器的展示。
为了演示,我们会一起创建一个简单的app。当然,我们不会演示所有的UIPageViewController的配置细节,我们会演示到使用滑动翻页样式来创建一个引导页。不过别担心,有了对UIPageViewController的基本理解,我相信你能够去探索其他的特性。
开始吧!
二、创建一个UIPageViewController
首先新建一个类作为翻页视图控制器中具体每一页视图的控制器,使其继承于UIViewController:
ModelViewController.h
#import
@interface ModelViewController : UIViewController
+(ModelViewController *)creatWithIndex:(int)index;
@property(nonatomic,strong)UILabel * indexLabel;
@end
ModelViewController.m
#import "ModelViewController.h"
@interface ModelViewController ()
@end
@implementation ModelViewController
+(ModelViewController *)creatWithIndex:(int)index{
ModelViewController * con = [[ModelViewController alloc]init];
con.indexLabel = [[UILabel alloc]initWithFrame:CGRectMake(110, 200, 100, 30)];
con.indexLabel.text = [NSString stringWithFormat:@"第%d页",index];
[con.view addSubview:con.indexLabel];
return con;
}
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor redColor];
}
@end
在工程模板自带的ViewController.m文件中实现如下代码:
#import "ViewController.h"
#import "ModelViewController.h"
//遵守协议
@interface ViewController ()
{
//翻页视图控制器对象
UIPageViewController * _pageViewControl;
//数据源数组
NSMutableArray * _dataArray;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
//进行初始化
_pageViewControl = [[UIPageViewController alloc]initWithTransitionStyle:UIPageViewControllerTransitionStyleScroll navigationOrientation:UIPageViewControllerNavigationOrientationHorizontal options:@{UIPageViewControllerOptionSpineLocationKey:@0,UIPageViewControllerOptionInterPageSpacingKey:@10}];
self.view.backgroundColor = [UIColor greenColor];
//设置翻页视图的尺寸
_pageViewControl.view.bounds=self.view.bounds;
//设置数据源与代理
_pageViewControl.dataSource=self;
_pageViewControl.delegate=self;
//创建初始界面
ModelViewController * model = [ModelViewController creatWithIndex:1];
//设置初始界面
[_pageViewControl setViewControllers:@[model] direction:UIPageViewControllerNavigationDirectionReverse animated:YES completion:nil];
//设置是否双面展示
_pageViewControl.doubleSided = NO;
_dataArray = [[NSMutableArray alloc]init];
[_dataArray addObject:model];
[self.view addSubview:_pageViewControl.view];
}
//翻页控制器进行向前翻页动作 这个数据源方法返回的视图控制器为要显示视图的视图控制器
- (nullable UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController{
int index = (int)[_dataArray indexOfObject:viewController];
if (index==0) {
return nil;
}else{
return _dataArray[index-1];
}
}
//翻页控制器进行向后翻页动作 这个数据源方法返回的视图控制器为要显示视图的视图控制器
- (nullable UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController{
int index = (int)[_dataArray indexOfObject:viewController];
if (index==9) {
return nil;
}else{
if (_dataArray.count-1=(index+1)) {
return _dataArray[index+1];
}else{
ModelViewController * model = [ModelViewController creatWithIndex:index+2];
[_dataArray addObject:model];
return model;
}
}
}
//屏幕旋转触发的代理方法
- (UIPageViewControllerSpineLocation) pageViewController:(UIPageViewController *)pageViewController spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation{
return UIPageViewControllerSpineLocationMin;
}
//设置分页控制器的分页数
- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController {
return 10;
}
//设置初始的分页点
- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController{
return 0;
}
@end
上面创建了最简单的翻页视图控制器示例,效果如下图:
三、UIPageViewController中方法使用解析
//创建翻页视图控制器对象
- (instancetype)initWithTransitionStyle:(UIPageViewControllerTransitionStyle)style navigationOrientation:(UIPageViewControllerNavigationOrientation)navigationOrientation options:(nullable NSDictionary*)options;
上面方法用于创建视图控制器对象,其中UIPageViewControllerTransitionStyle参数设置翻页控制器的风格,枚举如下:
typedef NS_ENUM(NSInteger, UIPageViewControllerTransitionStyle) {
UIPageViewControllerTransitionStylePageCurl = 0, //类似于书本翻页效果
UIPageViewControllerTransitionStyleScroll = 1 // 类似于ScrollView的滑动效果
};
如果设置为UIPageViewControllerTransitionStyleCurl,翻页效果如下图所示:
上面初始化方法中的UIPageViewControllerNavigationOrientation属性设置翻页的方向,枚举如下:
typedef NS_ENUM(NSInteger, UIPageViewControllerNavigationOrientation) {
UIPageViewControllerNavigationOrientationHorizontal = 0,//水平翻页
UIPageViewControllerNavigationOrientationVertical = 1//竖直翻页
};
options参数用于设置翻页视图控制器的配置字典,其可以设置的配置键值如下:
//这个键需要设置为UIPageViewControllerOptionSpineLocationKey枚举值对应的`NSNumber对象 设置翻页控制器的书轴 后面会介绍
NSString * const UIPageViewControllerOptionSpineLocationKey;
//这个键需要设置为NSNumber类型 设置每页视图的间距 用于滚动视图风格的
NSString * const UIPageViewControllerOptionInterPageSpacingKey;
下面是UIPageViewController的一些常用属性与方法:
//设置数据源
@property (nullable, nonatomic, weak) iddelegate;
//设置代理
@property (nullable, nonatomic, weak) iddataSource;
//获取翻页风格
@property (nonatomic, readonly) UIPageViewControllerTransitionStyle transitionStyle;
//获取翻页方向
@property (nonatomic, readonly) UIPageViewControllerNavigationOrientation navigationOrientation;
//获取书轴类型
@property (nonatomic, readonly) UIPageViewControllerSpineLocation spineLocation;
//设置是否双面显示
@property (nonatomic, getter=isDoubleSided) BOOL doubleSided;
//设置要显示的视图控制器
- (void)setViewControllers:(nullable NSArray*)viewControllers direction:(UIPageViewControllerNavigationDirection)direction animated:(BOOL)animated completion:(void (^ __nullable)(BOOL finished))completion;
上面只有spineLocation属性有些难于理解,其枚举如下:
typedef NS_ENUM(NSInteger, UIPageViewControllerSpineLocation) {
//对于SCrollView类型的滑动效果 没有书轴 会返回下面这个枚举值
UIPageViewControllerSpineLocationNone = 0,
//以左边或者上边为轴进行翻转 界面同一时间只显示一个View
UIPageViewControllerSpineLocationMin = 1,
//以中间为轴进行翻转 界面同时可以显示两个View
UIPageViewControllerSpineLocationMid = 2,
//以下边或者右边为轴进行翻转 界面同一时间只显示一个View
UIPageViewControllerSpineLocationMax = 3
};
将上面的示例代码修改几个地方如下:
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
_pageViewControl = [[UIPageViewController alloc]initWithTransitionStyle:UIPageViewControllerTransitionStylePageCurl navigationOrientation:UIPageViewControllerNavigationOrientationVertical options:@{UIPageViewControllerOptionSpineLocationKey:@2,UIPageViewControllerOptionInterPageSpacingKey:@10}];
self.view.backgroundColor = [UIColor greenColor];
_pageViewControl.view.bounds=self.view.bounds;
_pageViewControl.dataSource=self;
_pageViewControl.delegate=self;
ModelViewController * model = [ModelViewController creatWithIndex:1];
ModelViewController * model2 = [ModelViewController creatWithIndex:2];
[_pageViewControl setViewControllers:@[model,model2] direction:UIPageViewControllerNavigationDirectionReverse animated:YES completion:nil];
_pageViewControl.doubleSided = YES;
_dataArray = [[NSMutableArray alloc]init];
[_dataArray addObject:model];
[self.view addSubview:_pageViewControl.view];
}
- (UIPageViewControllerSpineLocation) pageViewController:(UIPageViewController *)pageViewController spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation{
return UIPageViewControllerSpineLocationMid;
}
运行效果如下图所示:
四、UIPageViewControllerDataSource中方法解析
//向前翻页展示的ViewController
- (nullable UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerBeforeViewController:(UIViewController *)viewController;
//向后翻页展示的ViewController
- (nullable UIViewController *)pageViewController:(UIPageViewController *)pageViewController viewControllerAfterViewController:(UIViewController *)viewController;
//设置分页控制器的分页点数
- (NSInteger)presentationCountForPageViewController:(UIPageViewController *)pageViewController NS_AVAILABLE_IOS(6_0);
//设置当前分页控制器所高亮的点
- (NSInteger)presentationIndexForPageViewController:(UIPageViewController *)pageViewController NS_AVAILABLE_IOS(6_0);
五、UIPageViewControllerDelegate中方法解析
//翻页视图控制器将要翻页时执行的方法
- (void)pageViewController:(UIPageViewController *)pageViewController willTransitionToViewControllers:(NSArray*)pendingViewControllers NS_AVAILABLE_IOS(6_0);
//翻页动画执行完成后回调的方法
- (void)pageViewController:(UIPageViewController *)pageViewController didFinishAnimating:(BOOL)finished previousViewControllers:(NSArray*)previousViewControllers transitionCompleted:(BOOL)completed;
//屏幕防线改变时回到的方法,可以通过返回值重设书轴类型枚举
- (UIPageViewControllerSpineLocation)pageViewController:(UIPageViewController *)pageViewController spineLocationForInterfaceOrientation:(UIInterfaceOrientation)orientation;
需越狱,安装一个插件叫做Barrel实现旋转3D
翻页,具体操作方法如下:
第一步,添加源:apt.weiPad.com;
第二步,在搜索框中输入barrel,安装完毕后重启手机;
第三步,开机后,手机设置会有barrel的选项,进入选择一个效果即可。
就是简单的js特效,明白了分页的原理,一切都好做
DataGridView 后台数据绑定 前台不要用自带的分页,用js去做分页控制
比如: 页面加个 Label控件, Label值就是如你图中所示的分页的数据,这里的text值要在后台绑定好,
当点击每个数字时,调用一下js函数,后数字传给后台,后台再根据传入的数字进行数据绑定,然后再绑定下text值
1、先把四张素材照片放到同一个文件里,这里用小狗四张照片。 2、把第一个图层复制一个拖到最下面。 3、把前四个图层分别建立一个组。 4、将第一个图层复制再次,先处理第一个副本图层,点击“编辑”-“变换”-“变形”,拖动鼠标制作第一下翻页的效果...
项目当中要实现一个电子档案,效果呢是类似小说翻页的效果。很简单,先来说一下实现思路
写一个用来接收你想展示信息的控件,如果只是文字展示,那就label,如果带图片什么的,那就自定义一个view
然后就是左右滑动的手势,在左右手势实现方法中做数据判断展示,加上动画效果就ok 了
1、在self.view 上创建label
2、添加左右手势
3、根据左右手势实现方法,给 label.text 数组判断赋值
4、执行翻页动画
- ( void )viewDidLoad {
[ super viewDidLoad];
self .view.backgroundColor = [UIColor whiteColor];
_arr = @[@"11111", @"22222", @"33333",@"44444",@"55555"];
[ self buildLable];
[ self configTapGes];
_count=0;
}
#pragma mark - label
- ( void )buildLable {
_labelView= [[UIViewalloc]init];
[ self .view addSubview:_labelView];
[_labelView mas_makeConstraints:^(MASConstraintMaker *make) {
make.centerX.equalTo( self .view.mas_centerX);
make.centerY.equalTo( self .view.mas_centerY);
make.width.mas_offset(WIDTH-40);
make.height.mas_offset(500);
}];
_labelView.backgroundColor = [UIColor orangeColor];
_label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, WIDTH-40, 500)];
_label.backgroundColor = [UIColor grayColor];
_label.numberOfLines = 0;
_label.text = [_arr objectAtIndex:0];
[ self .labelView addSubview:_label];
}
#pragma mark - 手势
- ( void )configTapGes {
_fromRightSwip= [[UISwipeGestureRecognizeralloc]initWithTarget: self action: @selector (nextPage:)];
_fromRightSwip.direction = UISwipeGestureRecognizerDirectionLeft;
[ self .view addGestureRecognizer:_fromRightSwip];
_fromLeftSwip= [[UISwipeGestureRecognizeralloc]initWithTarget: self action: @selector (forwardPage:)];
_fromLeftSwip.direction = UISwipeGestureRecognizerDirectionRight;
[ self .view addGestureRecognizer:_fromLeftSwip];
}
#pragma mark - 下一页按钮响应事件
- ( void )nextPage:(UIButton*)btn {
if (_count_arr.count-1) {
_label.text= [_arrobjectAtIndex:_count+1];
NSString*subtypeString;
subtypeString =kCATransitionFromRight;
[ self transitionWithType:@"pageCurl" WithSubtype:subtypeString ForView:_labelView];
_count=_count+1;
} else {
_count=_arr.count-1;
// [self showAlert:@"已经是最后一页"];
}
NSLog(@"下一页:%ld", ( long )_count);
}
#pragma mark - 上一页按钮响应事件
- ( void )forwardPage:(UIButton*)btn {
if (_count0) {
_label.text= [_arrobjectAtIndex:_count-1];
NSString*subtypeString;
subtypeString =kCATransitionFromLeft;
[ self transitionWithType:@"pageCurl" WithSubtype:subtypeString ForView:_labelView];
_count=_count-1;
} else {
_count=0;
// [self showAlert:@"已经是第一页"];
}
NSLog(@"上一页:%ld", ( long )_count);
}
#pragma CATransition动画实现
/**
* 动画效果实现
*
* @param type 动画的类型 在开头的枚举中有列举,比如 CurlDown//下翻页,CurlUp//上翻页
,FlipFromLeft//左翻转,FlipFromRight//右翻转 等...
* @param subtype 动画执行的起始位置,上下左右
* @param view 哪个view执行的动画
*/
- ( void )transitionWithType:(NSString*) typeWithSubtype:(NSString*) subtypeForView: (UIView*) view {
CATransition *animation = [CATransition animation];
animation.duration=0.7f;
animation.type= type;
if (subtype != nil ) {
animation.subtype= subtype;
}
animation.timingFunction = UIViewAnimationOptionCurveEaseInOut;
[view.layeraddAnimation:animationforKey:@"animation"];
}