轮播图判断是否第一次进入

//  AppDelegate.m

倒入头文件

//轮播图

#import "stareViewController.h"

//直接跳入标签控制器

#import "ViewController.h"

=========括号内

//判断是不是第一次打开 如果不是就不显示

//判断是否是第一次不是就没有启动动画

BOOL show=[[NSUserDefaults standardUserDefaults] objectForKey:@"show"];

if(show==NO)

{

[[NSUserDefaults standardUserDefaults]setBool:YES forKey:@"show"];

stareViewController *st=[stareViewController new];

self.window.rootViewController=st;

}

else

{

ViewController *vc = [[ViewController alloc] init];

self.window.rootViewController = vc;

}

=======括号外


//  ViewController.m  继承    UITabBarController


//标签控制器的头文件

#import "OneViewController.h"

#import "fenLeiViewController.h"

#import "goouWuViewController.h"

#import "GoeuViewController.h"


OneViewController *one = [[OneViewController alloc]init];

fenLeiViewController *fenLei = [[fenLeiViewController alloc] init];

goouWuViewController *gouWuChe = [[goouWuViewController alloc]init];

GoeuViewController *myKuaiF = [[GoeuViewController alloc]init];

UINavigationController *navo = [[UINavigationController alloc]initWithRootViewController:one];

UINavigationController *navf = [[UINavigationController alloc]initWithRootViewController:fenLei];

UINavigationController *navg = [[UINavigationController alloc]initWithRootViewController:gouWuChe];

UINavigationController *navm = [[UINavigationController alloc]initWithRootViewController:myKuaiF];

UITabBarItem *item1 = [[UITabBarItem alloc]initWithTitle:@"首页" image:[UIImage imageNamed:@"2.png"] tag:1];

UITabBarItem *item2 = [[UITabBarItem alloc]initWithTitle:@"分类" image:[UIImage imageNamed:@"分类.png"] tag:1];

UITabBarItem *item3 = [[UITabBarItem alloc]initWithTitle:@"购物车" image:[UIImage imageNamed:@"3.png"] tag:1];

UITabBarItem *item4 = [[UITabBarItem alloc]initWithTitle:@"我的快方" image:[UIImage imageNamed:@"4.png"] tag:1];

navo.tabBarItem = item1;

navf.tabBarItem = item2;

navg.tabBarItem = item3;

navm.tabBarItem = item4;

self.viewControllers = @[navo,navf,navg,myKuaiF];


//  stareViewController.m

倒入头文件

#import "OneViewController.h"

#import "ViewController.h"


{

//创建滑动控件

UIScrollView *theScroll;

//分页控件

UIPageControl *thePage;

//创建整型类

NSInteger tegPageTime;

//创建数组;

NSArray *theArray;

//计数器

NSTimer *theTime;

}


///=================================括号内

//获取屏幕的宽

float width = self.view.frame.size.width;

//获取屏幕的高

float height = self.view.frame.size.height;

//代替 初始化滚动控件

theScroll = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, width, height)];

//获取屏幕X轴

float X = 0.0;

//一共四张图片

for (int i = 0; i < 4; i++)

{

//图片初始化

UIImageView *theImg = [[UIImageView alloc] initWithFrame:CGRectMake(X, 0, width, height)];

//将图片添加到视图里

theArray = @[[UIImage imageNamed:@"q1"],[UIImage imageNamed:@"q2"],[UIImage imageNamed:@"q3"],[UIImage imageNamed:@"q4"],];

//将图片与数组下标绑定

theImg.image = theArray[i];

//将图片添加到滚动视图中

[theScroll addSubview:theImg];

//设置滚动视图的坐标 原代码

//(width=self.view.frame.size.width+self.view.frame.size.width+self.view.frame.size.width+self.view.frame.size.width,)

X += width;

}

//设置滚动视图的大小

theScroll.contentSize = CGSizeMake(width * 4, height);

// 设置滚动视图按页滚动

theScroll.pagingEnabled = YES;

//滚动条隐藏

theScroll.showsHorizontalScrollIndicator = NO;

//设置代理

theScroll.delegate = self;

//初始化页码

thePage = [[UIPageControl alloc]initWithFrame:CGRectMake(width /2-50, 570, 100, 30)];

//页数

thePage.numberOfPages = 4;

//初始页第一页

thePage.currentPage = 0;

//清除原来颜色

thePage.backgroundColor = [UIColor clearColor];

//没动原来

thePage.pageIndicatorTintColor = [UIColor greenColor];

//当前翻页显示的颜色

thePage.currentPageIndicatorTintColor = [UIColor redColor];

//顺序不能乱

[self.view addSubview:theScroll];

[self.view addSubview:thePage];

//记录当前图片

tegPageTime = thePage.currentPage;

//第一个几秒钟换一下 事件

theTime = [NSTimer scheduledTimerWithTimeInterval:3 target:self selector:@selector(scroll) userInfo:nil repeats:YES];

//=========括号外=============

//事件

-(void)scroll

{

tegPageTime ++;

if (tegPageTime>=theArray.count)

{

tegPageTime = 0;

}

[theScroll setContentOffset:CGPointMake(tegPageTime*theScroll.frame.size.width, 0) animated:YES];

}

//表示在滑动滚动视图的时候调用此方法

- (void)scrollViewDidScroll:(UIScrollView *)scrollView

{

CGPoint point=scrollView.contentOffset;//偏移

//获得所在位置

thePage.currentPage=point.x / scrollView.frame.size.width;

UIButton *theBtn = [[UIButton alloc]init];

if (thePage.currentPage == 3)

{

//停止图片滚动

[theTime setFireDate:[NSDate distantFuture]];

theBtn.frame = CGRectMake(133, 653, 150, 50);

theBtn.backgroundColor = [UIColor orangeColor];

theBtn.layer.cornerRadius = 26;

[theBtn setTitle:@"立即登录" forState:UIControlStateNormal];

//添加按钮触发事件:必须要用(UIControlEventTouchUpInside)

[theBtn addTarget:self action:@selector(TiaoZh) forControlEvents:UIControlEventTouchUpInside];

[self.view addSubview:theBtn];

//设置与用户无法交互(这样即可解决按钮在前面的那页中显示)

//  scrollView.userInteractionEnabled = NO;

}

}

//实现页码和滚动视图的关联

- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollVie

{

thePage.currentPage = theScroll.contentOffset.x / self.view.frame.size.width;

}

//跳转

-(void)TiaoZh

{

ViewController *VC = [[ViewController alloc]init];

[self presentViewController:VC animated:YES completion:nil];

}

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