IOS 引导页

原

#import "AppDelegate.h"
//引导页
#import "GuidePageViewController.h"
//tabbar控制器
#import "GPTabBarViewController.h"
@interface AppDelegate ()
@property(nonatomic,assign) BOOL isExist;
@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
   
   
    if ([[[NSUserDefaults standardUserDefaults] objectForKey:@"YINDAOYE"] isEqualToString:@"YINDAOYE"]){//归档标记存在，直接进入主页面
              self.window=[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
       UIStoryboard *storyboard= [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
        GPTabBarViewController *gpVC=[storyboard instantiateViewControllerWithIdentifier:@"GPTabBarViewController"];
        self.window.backgroundColor=[UIColor whiteColor];
        self.window.rootViewController=gpVC;
        [self.window makeKeyAndVisible];
        //删除归档
        [[NSUserDefaults standardUserDefaults] removeObjectForKey:@"YINDAOYE"];
    }else{//归档标记不存在，归档标记后，进入进入引导页
        [[NSUserDefaults standardUserDefaults] setObject:@"YINDAOYE" forKey:@"YINDAOYE"];
        GuidePageViewController *guidePageVC=[[GuidePageViewController alloc]init];
        self.window=[[UIWindow alloc]initWithFrame:[UIScreen mainScreen].bounds];
        self.window.backgroundColor=[UIColor whiteColor];
        self.window.rootViewController=guidePageVC;
        [self.window makeKeyAndVisible];
    }

    return YES;
}



#import "GuidePageViewController.h"
#import "GPTabBarViewController.h"
@interface GuidePageViewController ()<UIScrollViewDelegate>

@end

@implementation GuidePageViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view.
     [self guldePage];
}

- (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.
}
*/
-(void)buttonClick:(UIButton *)button{
    UIStoryboard *storyboard= [UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]];
    GPTabBarViewController *gpVC=[storyboard instantiateViewControllerWithIdentifier:@"GPTabBarViewController"];
    UIWindow *window=[UIApplication sharedApplication].keyWindow;
    window.rootViewController=gpVC;
}
-(void)guldePage{
    NSArray *imgArray=@[[UIImage imageNamed:@"w1.jpg"],[UIImage imageNamed:@"w2.jpg"],[UIImage imageNamed:@"w3.jpg"]];
    UIScrollView *scrollView=[[UIScrollView alloc]initWithFrame:self.view.bounds];
    scrollView.tag=200;
    scrollView.pagingEnabled=YES;
    scrollView.showsHorizontalScrollIndicator=NO;
    scrollView.showsVerticalScrollIndicator=NO;
    scrollView.delegate=self;
    scrollView.contentSize=CGSizeMake(scrollView.bounds.size.width*3, scrollView.bounds.size.height);
    for (int i =0; i <3; i++) {
        UIImageView *imageView =[[UIImageView alloc]initWithFrame:CGRectMake(i*scrollView.bounds.size.width, 0, scrollView.bounds.size.width, scrollView.bounds.size.height)];
        imageView.image=imgArray[i];
        [scrollView addSubview:imageView];
        
        if(i==2){
            imageView.userInteractionEnabled=YES;
            UIButton *button=[[UIButton alloc]initWithFrame:CGRectMake((imageView.bounds.size.width-150)/2 , imageView.bounds.size.height-60, 150, 50)];
            [button setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
            [button setTitle:@"点击进入" forState:UIControlStateNormal];
            [button addTarget:self action:@selector(buttonClick:) forControlEvents:UIControlEventTouchUpInside];
            button.layer.masksToBounds=YES;
            button.layer.cornerRadius=25.0;
            button.backgroundColor=[UIColor redColor];
            [imageView addSubview:button];
        }
    }
    [self.view addSubview:scrollView];
    
    UIPageControl *pageC=[[UIPageControl alloc]initWithFrame:CGRectMake((self.view.bounds.size.width-80)/2, self.view.bounds.size.height-30-60, 80, 30)];
    pageC.tag=201;
    pageC.numberOfPages=3.0;
    [self.view addSubview:pageC];
}

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView{
    NSInteger index=scrollView.contentOffset.x/scrollView.bounds.size.width;
    UIPageControl *pageC=(UIPageControl *)[self.view viewWithTag:201];
    pageC.currentPage=index;
    
}