应用首次启动引入导图

#import "ViewController.h"

#import "FirstTimeLoadJudge.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

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

    //取对应的Key (记录用户打开app次数)的整型值，直接加1

    [FirstTimeLoadJudgerecordAppOpenTimes];

    //基本设置：先进入ViewController中

    self.window = [[UIWindowalloc]initWithFrame:[UIScreenmainScreen].bounds];

    self.window.backgroundColor = [UIColor whiteColor];

    ViewController *view = [[ViewControlleralloc]init];

    self.window.rootViewController = view;

    [self.windowmakeKeyWindow];

    returnYES;

}

//FirstTimeLoadJudge中的类方法

@interface FirstTimeLoadJudge :NSObject

// 记录应用程序的打开次数

+ (void)recordAppOpenTimes;

//返回应用程序的打开次数

+ (NSInteger)appOpenTimes;

//是否是第一次打开应用程序

+ (BOOL)isFirstTimeOpenAPP;

@end

#import "FirstTimeLoadJudge.h"

#define kAppOpenTimes @"kAppOpenTimes"

@implementation FirstTimeLoadJudge

//记录应用打开次数

+ (void)recordAppOpenTimes{

    //取出打开次数

    NSInteger times = [[NSUserDefaultsstandardUserDefaults]integerForKey:kAppOpenTimes];

    //每打开一次次数＋1

    times++;

    //将当前次数写入其中

    [[NSUserDefaultsstandardUserDefaults]setInteger:timesforKey:kAppOpenTimes];

}

//查看应用打开的次数

+ (NSInteger)appOpenTimes{

    return [[NSUserDefaultsstandardUserDefaults]integerForKey:kAppOpenTimes];

}

//是否是第一次打开应用程序

+ (BOOL)isFirstTimeOpenAPP{

    if ([FirstTimeLoadJudgeappOpenTimes] ==1) {

        returnYES;

    }else{

        returnNO;

    }

}

//ViewController中实现功能

#import "ViewController.h"

#import "FirstTimeLoadJudge.h"

#import "RootViewController.h"

#import "AppDelegate.h"

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

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

@interface ViewController ()

@property (nonatomic,strong)UIScrollView *scrollView;

@end

@implementation ViewController

- (void)viewDidLoad {

    [superviewDidLoad];

    // Do any additional setup after loading the view, typically from a nib.

    self.view.backgroundColor = [UIColorblueColor];

    

    //判断应用程序是否是第一次打开如果是第一次打开

    if ([FirstTimeLoadJudgeisFirstTimeOpenAPP]) {

        NSLog(@"用户第一次打开应用程序");

        //显示新特性界面

        [selfshowNewFunction];

    }else{//不是第一次打开

        //切换Window的根视图控制器

        RootViewController *root = [[RootViewControlleralloc]init];

        AppDelegate *appDelegate = (AppDelegate *)[UIApplicationsharedApplication].delegate;

        appDelegate.window.rootViewController = root;

    }

}

- (void)showNewFunction{

    NSLog(@"显示导图界面");

    //准备5张图片

    NSArray *imageArray =@[@"helpphoto_one",@"helpphoto_two",@"helpphoto_three",@"helpphoto_four",@"helpphoto_five"];

    self.scrollView = [[UIScrollViewalloc]initWithFrame:CGRectMake(0,0, VIEW_WIDTH,VIEW_HEIGHT)];

    [self.viewaddSubview:self.scrollView];

    //图片的个数

    NSInteger imageCount = imageArray.count;

    //内容尺寸

    self.scrollView.contentSize =CGSizeMake(VIEW_WIDTH * imageCount,VIEW_HEIGHT);

    //按页滚动

    self.scrollView.pagingEnabled = YES;

    self.scrollView.bounces =NO;

    self.scrollView.showsHorizontalScrollIndicator = NO;

    //往scrollView上添加图片

    for (NSInteger i =0; i < imageCount; i++ ) {

        UIImageView *imageView = [[UIImageViewalloc]initWithFrame:CGRectMake(i *VIEW_WIDTH, 0,VIEW_WIDTH, VIEW_HEIGHT)];

        NSString *imageName = imageArray[i];

        //如果是网络图片

        //[imageView sd_setImageWithURL:[NSURL URLWithString:imageName] placeholderImage:[UIImage imageNamed:@""]];

        //本地图片

        imageView.image = [UIImageimageNamed:imageName];

        if (i == imageCount -1) {

            imageView.userInteractionEnabled =YES;

           //在最后一张图片上添加一个进入主界面的按钮

            UIButton *btn = [UIButtonbuttonWithType:UIButtonTypeCustom];

            btn.frame =CGRectMake(120,50, 100,50);

            [btn setTitle:@"开始体验"forState:UIControlStateNormal];

            [btn setTitleColor:[UIColoryellowColor] forState:UIControlStateNormal];

            btn.backgroundColor = [UIColorpurpleColor];

            [btn addTarget:selfaction:@selector(btnPressed:)forControlEvents:UIControlEventTouchUpInside];

            [imageView addSubview:btn];

        }

        //滚动视图上添加imageView

        [self.scrollViewaddSubview:imageView];

    }

}

- (void)btnPressed:(UIButton *)btn{

    RootViewController *root = [[RootViewControlleralloc]init];

    AppDelegate *appDelegate = (AppDelegate *)[UIApplicationsharedApplication].delegate;

    //切换根视图控制器

    appDelegate.window.rootViewController = root;

}

// RootViewController为导图进入后的主界面内容