简单的手动轮播图

先在点h初始化一个方法+ (BOOL)isShow;

。。。。MMM
#import "ViewController.h"
#import "ViewController1.h"
@interface ViewController ()<UIScrollViewDelegate>

@property (nonatomic , strong) UIScrollView *scrollView;

@end

@implementation ViewController
-(void)viewWillAppear:(BOOL)animated
{
    self.navigationController.navigationBar.hidden = YES;
}

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.view.backgroundColor = [UIColor whiteColor];
    
    [self scrollViewItem];
    
}
-(void)scrollViewItem
{
    self.scrollView = [[UIScrollView alloc]initWithFrame:self.view.frame];
    self.scrollView.delegate = self;
    self.scrollView.contentSize = CGSizeMake(3 * self.view.frame.size.width, self.view.frame.size.height);
    self.scrollView.bounces = NO;
    self.scrollView.pagingEnabled = YES;
    self.scrollView.showsVerticalScrollIndicator = NO;
    for (int i = 0; i < 3; i++){
        UIImageView *imgV = [[UIImageView alloc]initWithFrame:CGRectMake(i*self.view.frame.size.width, 0, self.view.frame.size.width, self.view.frame.size.height)];
        NSArray *arr = @[@"Lun1", @"Lun2", @"Lun3"];
        imgV.image = [UIImage imageNamed:arr[i]];
        if (i == 2){
            UIButton *btn = [[UIButton alloc]initWithFrame:CGRectMake(150, 400, 100, 40)];
            [imgV addSubview:btn];
//            btn.sd_layout.topSpaceToView(self 20).leftSpaceToView(self, 300).widthIs(90).heightIs(30);
            [btn setTitle:@"立即体验" forState:(UIControlStateNormal)];
            [btn setTitleColor:[UIColor whiteColor] forState:(UIControlStateNormal)];
            btn.backgroundColor = [UIColor blueColor];
            [btn addTarget:self action:@selector(btnClick) forControlEvents:(UIControlEventTouchUpInside)];
            imgV.userInteractionEnabled = YES;
        }
        [ self.scrollView addSubview:imgV];
    }
    [self.view addSubview: self.scrollView];
}
-(void)btnClick{
    ViewController1 *v1 = [[ViewController1 alloc]init];
    [self presentViewController:v1 animated:YES completion:nil];
    NSLog(@"点击了");
}

- (void) btnClick{
    if (self.delegate != nil && [self.delegate respondsToSelector:@selector(btnClick)]) {
        [self.delegate btnClick];
    }
}
+ (BOOL)isShow{
    // 读取版本信息
    NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
    NSString *localVersion = [user objectForKey:VERSION_INFO_CURRENT];
    NSString *currentVersion =[[NSBundle mainBundle].infoDictionary objectForKey:@"CFBundleShortVersionString"];
    if (localVersion == nil || ![currentVersion isEqualToString:localVersion]) {
        [XTGuidePagesViewController saveCurrentVersion];
        return YES;
    }else{
        return NO;
    }
}
// 保存版本信息
+ (void)saveCurrentVersion{
    NSString *version =[[NSBundle mainBundle].infoDictionary objectForKey:@"CFBundleShortVersionString"];
    NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
    [user setObject:version forKey:VERSION_INFO_CURRENT];
    [user synchronize];
}
然后在到AppDelegate.m
- (void) btnClick{
    ViewController *vc = [[ViewController alloc] init];
    self.window.rootViewController = vc;
    [self.window.layer transitionWithAnimType:TransitionAnimTypeRamdom subType:TransitionSubtypesFromRamdom curve:TransitionCurveRamdom duration:1.0f];
}