iOS 引导页

//  GuideViewController.h
//  Created by l.h on 14-5-6.

#import <UIKit/UIKit.h>
@interface GuideViewController : UIViewController<UIScrollViewDelegate>

@end

　　

//
//  GuideViewController.m
//  Created by l.h on 14-5-6.

#import "GuideViewController.h"
#import "YHomeViewController.h"
#import "YCustomTabBarViewController.h"
#define iPhone5 ([UIScreen instancesRespondToSelector:@selector(currentMode)] ? CGSizeEqualToSize(CGSizeMake(640, 1136), [[UIScreen mainScreen] currentMode].size) : NO)

@interface GuideViewController ()

@end

@implementation GuideViewController
{
    UIPageControl *pageControl;
    UIScrollView  *dyScrollView;
}


- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view.
    self.view.backgroundColor = [UIColor redColor];
    [[UIApplication sharedApplication] setStatusBarHidden:YES];
    
    [self initGuide];   //加载新用户指导页面
    [self  initpagecontrol];
}



-(void)initpagecontrol
{
    pageControl = [[UIPageControl alloc] init];
    pageControl.frame=CGRectMake(110, 400, 100, 30) ;
    pageControl.numberOfPages = 4; // 一共显示多少个圆点（多少页）
    // 设置非选中页的圆点颜色
    pageControl.pageIndicatorTintColor = [UIColor redColor];
    // 设置选中页的圆点颜色
    pageControl.currentPageIndicatorTintColor = [UIColor blueColor];
    // 禁止默认的点击功能
    pageControl.enabled = NO;
    pageControl.backgroundColor=[UIColor  clearColor];
    [self.view addSubview:pageControl];
    
    
}


-(void)initGuide
{
    NSArray *IMGarray=@[@"1136yd.png",@"1136yd1.png",@"1136yd2.png",@"1136yd3.png"];
    NSArray *IMGarray2=@[@"960yd.png",@"960yd1.png",@"960yd2.png",@"960yd3.png"];
    dyScrollView=[[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, self.view.frame.size.height)];
    dyScrollView.delegate=self;
    dyScrollView.backgroundColor=[UIColor greenColor];
    dyScrollView.contentSize=CGSizeMake(320*[IMGarray count], 460);
    dyScrollView.showsVerticalScrollIndicator=NO;
    dyScrollView.pagingEnabled=YES;
    dyScrollView.bounces=NO;       //取消弹性
    
    dyScrollView.showsHorizontalScrollIndicator=NO;
    [self.view addSubview:dyScrollView];
    for (int i=0; i<[IMGarray  count]; i++)
    {
        UIImageView *imgView=[[UIImageView alloc] initWithFrame:CGRectMake(i*320, 0, 320, self.view.frame.size.height)];
        imgView.image=[UIImage imageNamed:(iPhone5?[IMGarray objectAtIndex:i]:[IMGarray2 objectAtIndex:i])];
        imgView.contentMode = UIViewContentModeScaleAspectFit;
        //        imgView.autoresizesSubviews = YES;
        //        imgView.autoresizingMask =
        //        UIViewAutoresizingFlexibleLeftMargin | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleWidth;
        [dyScrollView addSubview:imgView];
        if (i==[IMGarray  count]-1)
        {
            [imgView setUserInteractionEnabled:YES];
            UIButton *button=[UIButton buttonWithType:UIButtonTypeRoundedRect];
            button.frame=CGRectMake(110, 300, 100, 40);
            [button  setBackgroundImage:[UIImage imageNamed:@"ksty"] forState:UIControlStateNormal];
            //             [button setTitle:@"立即体验" forState:UIControlStateNormal];
            [button addTarget:self action:@selector(firstpressed)  forControlEvents:UIControlEventTouchUpInside];
            [imgView addSubview:button];
        }
    }
}


- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{
    //更新UIPageControl的当前页
    CGPoint offset = scrollView.contentOffset;
    CGRect bounds = scrollView.frame;
    [pageControl setCurrentPage:offset.x / bounds.size.width];
}

-(void) scrollViewDidScroll:(UIScrollView *)scrollView
{
    CGFloat pageWidth = self.view.frame.size.width;
    // 在滚动超过页面宽度的50%的时候，切换到新的页面
    int page = floor((dyScrollView.contentOffset.x + pageWidth/2)/pageWidth) ;
    pageControl.currentPage = page;
}

//点击button跳转到根视图
- (void)firstpressed
{
   [self.view  removeFromSuperview];
   [[UIApplication sharedApplication] setStatusBarHidden:NO];
}

-(void)viewWillDisappear:(BOOL)animated
{
    self.view=nil;
}

@end

//  YAppDelegate.m

#import "YAppDelegate.h"
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
[self  isFirstLuachtheApp];
}

////判断是不是第一次启动应用
-(void)isFirstLuachtheApp
{
   
    
//如果不是第一次启动的话,使用LoginViewController作为根视图
 
      [self  navigationController];
    
//判断是不是第一次启动应用   先覆盖根视图之后移除
if(![[NSUserDefaults standardUserDefaults] boolForKey:@"firstLaunch"])
{
    [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"firstLaunch"];
    NSLog(@"第一次启动");
    //如果是第一次启动的话,使用UserGuideViewController (用户引导页面) 作为根视图
   _gvc=[[GuideViewController  alloc]init];;
    [self.window  addSubview:self.gvc.view];

}
}


-(void)navigationController
{
    YHomeViewController *HomeVC = [[YHomeViewController alloc] init];
    YJobSearchViewController *JobSearchVC = [[YJobSearchViewController alloc] init];
    YMyLifeViewController  *LifeVC = [[YMyLifeViewController alloc] init];
    YChangeViewController  *ChangeVC = [[YChangeViewController alloc] init];

    UINavigationController *navController1 = [[UINavigationController alloc] initWithRootViewController:HomeVC];
    UINavigationController *navController2 = [[UINavigationController alloc] initWithRootViewController:JobSearchVC];
    UINavigationController *navController3 = [[UINavigationController alloc] initWithRootViewController:LifeVC];
    UINavigationController *navController4 = [[UINavigationController alloc] initWithRootViewController:ChangeVC];


    NSArray *array = [NSArray arrayWithObjects:navController1,navController2,navController4,navController3,HomeVC,JobSearchVC,ChangeVC,LifeVC,nil];


    YCustomTabBarViewController *tabBarViewController = [[YCustomTabBarViewController alloc] init];
    tabBarViewController.viewControllers = array;
    tabBarViewController.seletedIndex = 0;
    self.window.rootViewController = tabBarViewController;

}