currentPage //当前页

numberOfPages //指定⻚页⾯面的个数

//

//  RootViewController.m

#define RandomColor [UIColor colorWithRed:arc4random()%256/255.0 green:arc4random()%256/255.0 blue:arc4random()%256/255.0 alpha:1.0]

#import "RootViewController.h"

@interface RootViewController ()<UIScrollViewDelegate>//当前类服从 UIScrollViewDelegate 

@end

@implementation RootViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    //1.创建对象

    //2配置属性

    UIScrollView * scorll = [[UIScrollView alloc]initWithFrame:CGRectMake(, , , )];//初始化大小

    scorll.backgroundColor = RandomColor;

    //2.1 容量大小

    scorll.contentSize = CGSizeMake(*, *);

    //2.2内容区域偏移量（默认的 是 （0，0）不偏移的）

    scorll.contentOffset = CGPointMake(, );//x 偏移300 y 不偏移

    //2.3滚动条的显示样式

    scorll.indicatorStyle = UIScrollViewIndicatorStyleWhite;

    //2.4是否显示滚动条

    scorll.showsHorizontalScrollIndicator = NO;//横向滚动条（隐藏，滚动条还在仅仅是隐藏了）

    scorll.showsVerticalScrollIndicator = YES;//纵向的滚动条

    //2.5是否可以滚动

//    scorll.scrollEnabled = NO;//默认是可以支持滚动的（我们一般使用默认值） 这里改为 NO 他就相当于一个 UIView 视图

    //2.6方向锁（设置控件是否支持单方向的滑动）

    scorll.directionalLockEnabled = YES;//在滑动的时候 在给定的范围去拖拽 在另外一个方向是无用的 ，如果是斜着拖动的时候，该属性就不会锁

    //2.7设置 反弹效果

//    scorll.bounces = NO;//默认是有反弹效果

    scorll.bounces = YES;

    //2.8当显示的内容区域小于scorll 的边界的时候，依然有回弹效果 (默认是有的 YES)

    scorll.alwaysBounceHorizontal = NO;//水平

    scorll.alwaysBounceVertical = NO;//竖直方向

    //2.9点击状态条的时候 是否偏移到最顶端 (显示手机的状态的区域 显示运营商 wifi 的区域 就是状态条) 默认是支持的

    scorll.scrollsToTop = YES;

    //2.10设置代理 检测 scrollView 的滚动过程

    scorll.delegate = self;//最早学的是 textfield 的协议

    //2.11滚动条视图在拖拽的时候 缩放的比例大小

    scorll.minimumZoomScale = 0.1;//最小的缩放比例 (默认是1.0 就是不缩小)

    scorll.maximumZoomScale = 2.5;//最大的缩放比例

    //3.添加到根视图

    [self.view addSubview:scorll];

    //4.释放所有权

    [scorll release];

//    UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0, 0, 600/2- 100, 400- 100)];

    UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(, ,, *)];

    [imageView initWithImage:[UIImage imageNamed:@"a1.jpg"]];

    imageView.tag  = ;

    [scorll addSubview:imageView];

    [imageView release];

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

}

#pragma MARK ----------UISCorllViewDelegate-------------------------------------------

- (void)scrollViewDidScroll:(UIScrollView *)scrollView{

    //scorllViewDidScroll 滚动条 ScrollView 发生滚动的时候触发

    NSLog(@"scorllViewDidScroll 滚动条 ScrollView 发生滚动的时候触发 获取位置%@ 获取偏移量 ",NSStringFromCGPoint(scrollView.frame.origin));

}// any offset changes

- (void)scrollViewDidZoom:(UIScrollView *)scrollView NS_AVAILABLE_IOS(3_2){

}// any zoom scale changes

// called on start of dragging (may require some time and or distance to move)

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{

}

// called on finger up if the user dragged. velocity is in points/millisecond. targetContentOffset may be changed to adjust where the scroll view comes to rest

- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset NS_AVAILABLE_IOS(5_0){

}

// called on finger up if the user dragged. decelerate is true if it will continue moving afterwards

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{

}

- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{

}// called on finger up as we are moving

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{

}// called when scroll view grinds to a halt

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{

}// called when setContentOffset/scrollRectVisible:animated: finishes. not called if not animating

//设置 scrollView 的缩放视图 功能

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{

    //viewForZoomingInScrollview: 这个方法是在拖动的过程中可以被缩放

    UIImageView * View = (UIImageView *)[scrollView viewWithTag:];

    return View;

}// return a view that will be scaled. if delegate returns nil, nothing happens

- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view NS_AVAILABLE_IOS(3_2){

}// called before the scroll view begins zooming its content

- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale{

}// scale between minimum and maximum. called after any 'bounce' animations

- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView{

    return YES;

}// return a yes if you want to scroll to the top. if not defined, assumes YES

- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView{

}// called when scrolling animation finished. may be called immediately if already at top

@end

- (void)scrollViewDidScroll:(UIScrollView *)scrollView{

    //scorllViewDidScroll 滚动条 ScrollView 发生滚动的时候触发

    NSLog(@"scorllViewDidScroll 滚动条 ScrollView 发生滚动的时候触发 获取位置%@ 获取偏移量 %@ ",NSStringFromCGPoint(scrollView.frame.origin),NSStringFromCGPoint(scrollView.contentOffset));

}// any offset changes

// scrollView 缩放的图像发生缩放的时候触发

- (void)scrollViewDidZoom:(UIScrollView *)scrollView NS_AVAILABLE_IOS(3_2){

    //scrollViewDidZoom  缩放的图像发生缩放的时候触发

    NSLog(@"%s %d",__FUNCTION__,__LINE__);//注意是双下划线

}// any zoom scale changes

// called on start of dragging (may require some time and or distance to move)

// scrollView 将要进项拖拽的时候触发

- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{

    NSLog(@"scrollView 将要进项拖拽的时候触发 手指刚放上去，将要拖拽");

}

// called on finger up if the user dragged. velocity is in points/millisecond. targetContentOffset may be changed to adjust where the scroll view comes to rest

//scrollView 将要结束拖拽的时候触发

- (void)scrollViewWillEndDragging:(UIScrollView *)scrollView withVelocity:(CGPoint)velocity targetContentOffset:(inout CGPoint *)targetContentOffset NS_AVAILABLE_IOS(5_0){

    NSLog(@"scrollView 将要结束拖拽的时候触发");

    //

}

// called on finger up if the user dragged. decelerate is true if it will continue moving afterwards

// scrollView 已经结束拖拽的时候触发

- (void)scrollViewDidEndDragging:(UIScrollView *)scrollView willDecelerate:(BOOL)decelerate{

    NSLog(@"scrollView 已经结束拖拽的时候触发");

    //

}

// scrollView 触发时机：scrollView 将要减速 就是手指离开滚动条后

- (void)scrollViewWillBeginDecelerating:(UIScrollView *)scrollView{

    NSLog(@" scrollView 触发时机：scrollView 将要减速 就是手指离开滚动条后");

}// called on finger up as we are moving

//scrollView 已经结束减速

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{

    //当停止滑动的时候 让偏移量为（0，0）

//    scrollView.contentOffset = CGPointMake(0, 0);//不带动画效果

    NSLog(@"scrollView 已经结束减速");

    [scrollView setContentOffset:CGPointMake(, ) animated:YES];//带动画效果

    //scrollViewDidEndDecelerating:

}// called when scroll view grinds to a halt

// scrollView 已经结束滚动

- (void)scrollViewDidEndScrollingAnimation:(UIScrollView *)scrollView{

    //

}// called when setContentOffset/scrollRectVisible:animated: finishes. not called if not animating

//设置 scrollView 的缩放视图 功能

- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{

    //viewForZoomingInScrollview: 这个方法是在拖动的过程中可以被缩放

    UIImageView * View = (UIImageView *)[scrollView viewWithTag:];

    return View;

}// return a view that will be scaled. if delegate returns nil, nothing happens

// scrollView 将要开始缩放的时候

- (void)scrollViewWillBeginZooming:(UIScrollView *)scrollView withView:(UIView *)view NS_AVAILABLE_IOS(3_2){

}// called before the scroll view begins zooming its content

//scrollView 已经结束缩放

- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale{

    [scrollView setZoomScale:1.0]; //缩放后还原为1.0 原来的大小

    NSLog(@"scrollView 已经结束缩放");

}// scale between minimum and maximum. called after any 'bounce' animations

//对应上面点击状态条的时候 对应（设置）方法  scorll.scrollsToTop = YES; 在这个方法触发的时候会触发该方法

//该方法是否支持 点击状态条 偏移到最上端 该属性默认是 YES

- (BOOL)scrollViewShouldScrollToTop:(UIScrollView *)scrollView{

    return YES;

}// return a yes if you want to scroll to the top. if not defined, assumes YES

// scrollVIew 已经偏移到最上端 时候触发 效果 是刷新一下当页面前的数据 (前提是 已经设置过 scrollToTop 属性为 YES 的时候)

- (void)scrollViewDidScrollToTop:(UIScrollView *)scrollView{

    NSLog(@"scrollVIew 已经偏移到最上端 时候触发 效果 是刷新一下当页面前的数据 (前提是 已经设置过 scrollToTop 属性为 YES 的时候)");

}// called when scrolling animation finished. may be called immediately if already at top

#import "AppDelegate.h"

#import "RootViewController.h"

#import "FirstLaunViewController.h"

#import "MacroHeader.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];

    // Override point for customization after application launch.

    self.window.backgroundColor = [UIColor whiteColor];

    [self.window makeKeyAndVisible];

    //判断是否是第一次安装启动

    //NSUserDefaults 类 是用来存储用户的偏好设置 （数据 持久化 轻量级）单例模式 单例（就是程序里面只有一个）

    NSUserDefaults * user = [NSUserDefaults standardUserDefaults];//这个变量的生命周期就是软件的生命周期 存一些用户名，密码 是否第一次加载

    BOOL isFirstLaunch = [user boolForKey:FIRST];//如果没有在查找出来，置为 NO   "这里并不存入Key 数据"

    if (!isFirstLaunch) {

        //一旦发现为 NO 说明程序是第一次启动，之前没有存储过，指定 lanch 为window 的根视图控制器

        //程序第一次安装需要加载用户引导界面

        FirstLaunViewController * RootVC =[[FirstLaunViewController alloc]init];

        self.window.rootViewController = RootVC;

        [RootVC release];

    }else{

        //如果不是第一次安装运行，就指定主界面试图控制器为 window 的根视图

        RootViewController * RootVC = [[RootViewController alloc]init];

        self.window.rootViewController = RootVC;

        [RootVC release];

    }

    self.window.backgroundColor = [UIColor orangeColor];

    return YES;

}

//

//  FirstLaunViewController.m

#import "FirstLaunViewController.h"

#import "RootViewController.h"//本程序的 根视图控制器

#import "MacroHeader.h"

@interface FirstLaunViewController ()<UIScrollViewDelegate>

@end

@implementation FirstLaunViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    // 第一次加载的用户引导页面

    //布剧子视图

    [self layoutSubViews];

}

-(void)layoutSubViews{

    [self setUpScrollView];//布局 scroll

    [self setUpPageControl];

}

-(void)setUpScrollView{

    UIScrollView * scroll = [[UIScrollView alloc]initWithFrame:[[UIScreen mainScreen]bounds]];//[UIScreen mainScreen].bounds 就不要再加 [] le

    scroll.tag = ;

//    scroll.contentOffset = CGPointMake(self.view.frame.size.width,0);

    //正页滑动

    scroll.pagingEnabled = YES;

    scroll.delegate = self;//设置代理

    scroll.contentSize = CGSizeMake(kScreenWidth * kImageCount, kScreenHeight);

    scroll.showsHorizontalScrollIndicator = NO;//不让横向的滚动条显示

    //放图片

    for (int i = ; i < kImageCount; i++) {

//        UIImageView * imageView = [[UIImageView alloc]initWithFrame:[[UIScreen mainScreen]bounds]];

                UIImageView * imageView = [[UIImageView alloc]initWithFrame: CGRectMake(kScreenWidth * i, , kScreenWidth, kScreenHeight)];

        NSString * imageName = [NSString stringWithFormat:kPictureName,i+];

        NSString * imagePath = [[NSBundle mainBundle]pathForResource:imageName ofType:kPictureType];

        UIImage * image  = (UIImage *)[UIImage imageWithContentsOfFile:imagePath];

//        [imageView addSubview:image];

        [imageView setImage:image];

        imageView.tag =  + i;

//        imageView.frame = CGRectMake(kScreenWidth * i, 0, kScreenWidth, kScreenHeight);

//        [self.view addSubview:imageView];

        [scroll addSubview:imageView];//注意是添加到 scroll

        [imageView release];

        //最后一张需要轻怕手势（浏览最后一张图片轻拍后进入页面）

        if(i == kImageCount - ){

            UITapGestureRecognizer * tap  = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(handleTap:)];

            [imageView addGestureRecognizer:tap];//这里不能少了这一步，给 imageView 指定轻拍对象

            //打开用户交互

            imageView.userInteractionEnabled = YES;

            [tap release];

        }

    }

    [self.view addSubview:scroll];

    [scroll release];

}

-(void)setUpPageControl{

    UIPageControl * page = [[UIPageControl alloc]initWithFrame:CGRectMake((kScreenWidth- )/, kScreenHeight - , , )];//先确定控件的 宽 高 xy 就相应的确定了

    page.tag = ;

    //设置其余页的颜色

    page.pageIndicatorTintColor = [UIColor orangeColor];

//    page.currentPage = kImageCount;//页面总页数不是这样写的  page.currentPage 是什么？

    page.numberOfPages = kImageCount;

    //当前页面的颜色

    page.currentPageIndicatorTintColor = [UIColor lightGrayColor];

//    page.currentPageIndicatorTintColor = [UIColor redColor];

//    UIScrollView * scroll = (UIScrollView *)[self.view viewWithTag:101];

//    [scroll addSubview:page];

//    page.backgroundColor = [UIColor redColor];//测试一下位置

    [self.view addSubview:page];

    [page release];

    //添加响应的触发方法 (使用协议 这里就不需要了)

//    [page addTarget:self action:@selector(handlePage:) forControlEvents:UIControlEventValueChanged];

}

#pragma mark -------Page页面的点与页面下标一致---------

//UIPageControl

//-(void)handlePage:(UIPageControl *)page{

//    UIPageControl * pageview = [[UIPageControl alloc]init];

//    pageview = (UIPageControl *)[self.view viewWithTag:102];

//

//    UIScrollView * scrollview = [[UIScrollView alloc]init];

//    scrollview = (UIScrollView *)[self.view viewWithTag:101];

//

//}

#pragma mark -------轻拍进入程序主页面---------

//轻怕手势

-(void)handleTap:(UITapGestureRecognizer *)tap{

    //当点击最后一张的时候，就意味着用户引导页已经结束，要进入到程序的主界面，这时候要将对应的 key 保存到轻量级的 NSUserDefaults

    NSUserDefaults * user = [NSUserDefaults standardUserDefaults];//整个程序运行期间程序不会被回收

   //    [user boolForKey:@"first"]==YES;

    [user setBool:YES forKey:FIRST];//当点击最后一张的时候，就意味着用户引导页已经结束，要进入到程序的主界面

    //立即更新立即保存 同步,立即修改 存入到本地内存的字符串的值  这个方法是系统每隔一段时间去调用的方法（系统自己去保存）

    [user synchronize];

    //进入程序主界面（就是重新指定根视图控制器）

    RootViewController * mainVC = [[RootViewController alloc]init];

    //更改 wiindow 的根视图控制器 为主界面的视图控制器 mainVC

    [UIApplication sharedApplication].keyWindow.rootViewController = mainVC;//UIApplication 也是一个单例对象

    [mainVC release];

}

#pragma mark -------UIScrollViewDelegate 协议实现---------

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView;{

    UIPageControl *  page = (UIPageControl *)[self.view viewWithTag:];

    page.currentPage = scrollView.contentOffset.x/kScreenWidth;

//    NSLog(@"%f %f",scrollView.contentOffset.x,scrollView.contentOffset.y);

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

/*

#pragma mark - Navigation

// In a storyboard-based application, you will often want to do a little preparation before navigation

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {

    // Get the new view controller using [segue destinationViewController].

    // Pass the selected object to the new view controller.

}

*/

@end

#ifndef UseDemo_MacroHeader_h

#define UseDemo_MacroHeader_h

//该文件可以定义工程里所有用到的宏 在需要的时候直接 导入该文件即可

//定义在 FirstLaunViewController.m里定义的 宏

#define kScreenWidth [[UIScreen mainScreen]bounds].size.width

#define kScreenHeight  [[UIScreen mainScreen]bounds].size.height

#define kImageCount 6   //好处是方便每次修改图片的张数

#define kPictureName   @"v6_guide_%d"

#define kPictureType   @"png"

#define FIRST @"firstLaunch"

#endif