define BOOLFORKEY @"GuidePage"

@interface GuidePageView ()<UIScrollViewDelegate>

@property (nonatomic, strong) UIScrollView *scrollView;
@property (nonatomic, strong) UIPageControl *pageControl;

@end

@implementation GuidePageView

• (instancetype)initWithFrame:(CGRect)frame
  {
  if (self = [super initWithFrame:frame]) {

    [self show];
  

  }

  return self;
  }

• (void)show
  {

  if (![[NSUserDefaults standardUserDefaults] boolForKey:BOOLFORKEY]) {

    [[NSUserDefaults standardUserDefaults] setBool:YES forKey:BOOLFORKEY];
    // 自定义引导界面
    [self pushGuideView];
  

  }

}

// 加载视图

• (void)pushGuideView
  {
  UIWindow *window = [UIApplication sharedApplication].keyWindow;
  self.frame = window.bounds;
  [window addSubview:self];

  _scrollView = [[UIScrollView alloc]initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, SCREEN_HEIGHT)];
  [self addSubview:_scrollView];
  _scrollView.backgroundColor = [UIColor whiteColor];
  _scrollView.delegate = self;
  _scrollView.contentSize = CGSizeMake(SCREEN_WIDTH * 4, SCREEN_HEIGHT);
  _scrollView.bounces = NO;
  _scrollView.pagingEnabled = YES;
  _scrollView.showsHorizontalScrollIndicator = NO;

  for (NSInteger i = 0; i < 4; i++) {

    UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(SCREEN_WIDTH * i, 0, SCREEN_WIDTH, SCREEN_HEIGHT)];
    NSString *imageName = [NSString stringWithFormat:@"start_%ld",i + 1];
    imageView.image = [UIImage imageNamed:imageName];
    imageView.userInteractionEnabled = YES;
    
    if (i == 3) {
        
        UIButton *startBtn = [UIButton buttonWithType:UIButtonTypeSystem];
        [startBtn setTitle:@"开始体验" forState:UIControlStateNormal];
        startBtn.layer.masksToBounds = YES;
        [startBtn setTitleColor:[UIColor colorWithHex:@"722b04"] forState:UIControlStateNormal];
        startBtn.titleLabel.font = [UIFont systemFontOfSize:19];
        startBtn.layer.cornerRadius = 20;
        startBtn.backgroundColor = [UIColor colorWithHex:kAppDefaultColor_yellow];
        [startBtn addTarget:self action:@selector(buttonClick) forControlEvents:UIControlEventTouchUpInside];
        [imageView addSubview:startBtn];
  
        [startBtn mas_makeConstraints:^(MASConstraintMaker *make) {
            make.bottom.equalTo(imageView.mas_bottom).offset(-50);
            make.centerX.equalTo(imageView.mas_centerX);
            make.width.equalTo(@170);
            make.height.equalTo(@40);
        }];
        
    }
    
    [_scrollView addSubview:imageView];
  

  }

  _pageControl = [[UIPageControl alloc]initWithFrame:CGRectMake(SCREEN_WIDTH * 0.0, SCREEN_HEIGHT * 0.9, SCREEN_WIDTH * 1.0, SCREEN_HEIGHT * 0.1)];
  _pageControl.currentPage = 0;
  _pageControl.numberOfPages = 4;
  _pageControl.pageIndicatorTintColor = [UIColor grayColor];
  _pageControl.currentPageIndicatorTintColor = [UIColor colorWithHex:kAppDefaultColor_yellow];
  [self addSubview:_pageControl];
  }

• (void)scrollViewDidEndDecelerating:(UIScrollView *)scrollview
  {
  int page = scrollview.contentOffset.x / scrollview.frame.size.width;
  [_pageControl setCurrentPage:page];
  }

• (void)buttonClick
  {
  [UIView animateWithDuration:1.5 animations:^{

    self.alpha = 0;
  

  } completion:^(BOOL finished) {

    [self removeFromSuperview];
  

  }];
  }

@end