iOS 一步一步带你实现引导页

直接上代码(简简单单)
创建一个控制器

.h
@protocol selectDelegate <NSObject>
- (void)click;
@end
@interface XTGuidePagesViewController : UIViewController
@property (nonatomic, strong) UIButton *btnEnter;
// 初始化引导页
- (void)initWithXTGuideView:(NSArray *)images;
// 版本信息判断
- (BOOL)isShow;
@property (nonatomic, assign) id<selectDelegate> delegate;
// 创建单利类
+ (instancetype)shareXTGuideVC;

.m
- (void)initWithXTGuideView:(NSArray *)images
{UIScrollView *gui = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, s_w, s_h)];gui.pagingEnabled = YES;// 隐藏滑动条gui.showsHorizontalScrollIndicator = NO;gui.showsVerticalScrollIndicator = NO;// 取消反弹gui.bounces = NO;for (NSInteger i = 0; i < images.count; i ++) {[gui addSubview:({self.btnEnter = [UIButton buttonWithType:UIButtonTypeCustom];self.btnEnter.frame = CGRectMake(s_w * i, 0, s_w, s_h);[self.btnEnter setImage:[UIImage imageNamed:images[i]] forState:UIControlStateNormal];;self.btnEnter;})];[self.btnEnter addSubview:({UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];[btn setTitle:@"点击进入" forState:UIControlStateNormal];btn.frame = CGRectMake(s_w * i, s_h - 60, 100, 40);btn.center = CGPointMake(s_w / 2, s_h - 60);btn.backgroundColor = [UIColor lightGrayColor];[btn addTarget:self action:@selector(clickEnter) forControlEvents:UIControlEventTouchUpInside];btn;})];}gui.contentSize = CGSizeMake(s_w * images.count, 0);[self.view addSubview:gui];// pageControlself.pageControl = [[UIPageControl alloc] initWithFrame:CGRectMake(0, 0, s_w / 2, 30)];self.pageControl.center = CGPointMake(s_w / 2, s_h - 95);[self.view addSubview:self.pageControl];self.pageControl.numberOfPages = images.count;
}

单利

+ (instancetype)shareXTGuideVC
{static XTGuidePagesViewController *x = nil;static dispatch_once_t onceToken;dispatch_once(&onceToken, ^{x = [[XTGuidePagesViewController alloc] init];});return x;
}

- (void)clickEnter
{if (self.delegate != nil && [self.delegate respondsToSelector:@selector(click)]) {[self.delegate click];}
}

- (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"];NSLog(@"L ===%@", localVersion);NSLog(@"C ===%@", currentVersion);if (localVersion == nil || ![currentVersion isEqualToString:localVersion]) {[self 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];
}

#pragma mark - ScrollerView Delegate
- (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollView
{self.pageControl.currentPage = scrollView.contentOffset.x / s_w;
}

在app delegate中调用

NSArray *images = @[@"1", @"2", @"3"];if ([[[XTGuidePagesViewController alloc] init] isShow]) {self.window.rootViewController = [XTGuidePagesViewController shareXTGuideVC];[[XTGuidePagesViewController shareXTGuideVC] initWithXTGuideView:images];[XTGuidePagesViewController shareXTGuideVC].delegate = self;}else{[self click];}

- (void)click
{ViewController *vc = [[ViewController alloc] init];self.window.rootViewController = vc;[self.window.layer transitionWithAnimType:TransitionAnimTypeRamdom subType:TransitionSubtypesFromRamdom curve:TransitionCurveRamdom duration:2.0f];
}

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