// 判断是否加载过新手指南
NSUserDefaults *user = [NSUserDefaults standardUserDefaults];
    BOOL isADD = [user objectForKey:@"secondCouponBoard_iPhone"];
    if (isADD != YES) {
        
        [self newUserGuide];
        
    }


#pragma mark - ===== 新手指引 =====

/**
 *  新手指引
 */

- (void)newUserGuide
{
    
    // 这里创建指引在这个视图在window上
    CGRect frame = [UIScreen mainScreen].bounds;
   // 把背景view添加到window上边
    UIView * bgView = [[UIView alloc] initWithFrame:frame];
    [bgView setBackgroundColor:[UIColor clearColor]];
    [[UIApplication sharedApplication].keyWindow addSubview:bgView];
    
    // 添加背景图片 并在背景图片上边添加轨迹 
    UIImageView * bgImg = [[UIImageView alloc] initWithFrame:frame];
    [bgImg setBackgroundColor:[UIColor blackColor]];
    bgImg.alpha = 0.6;
    [bgView addSubview:bgImg];
    
    //create path 重点来了（**这里需要添加第一个路径）
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:frame];
    // 这里添加第二个路径 （这个是圆）
    [path appendPath:[[UIBezierPath bezierPathWithRoundedRect:CGRectMake(13, 33, kWidth - 13* 2, 94) cornerRadius:5] bezierPathByReversingPath]];
  
    CAShapeLayer *shapeLayer = [CAShapeLayer layer];
    shapeLayer.path = path.CGPath;
    [bgImg.layer setMask: shapeLayer];
    
 // 添加指引图片
    UIImageView * img = [[UIImageView alloc] init];
    [img setFrame:CGRectMake((kWidth - 290) /2, 100, 290, 180)];
    [img setImage:[UIImage imageNamed:@"guide_04"]];
    [img setContentMode:UIViewContentModeScaleToFill];
    [bgView addSubview:img];
    
    // 添加点击事件
    UIButton * newGuidBtn = [UIButton buttonWithType:UIButtonTypeCustom];
    [newGuidBtn setFrame:frame];
    [newGuidBtn addTarget:self action:@selector(clickBtnToGuid:) forControlEvents:UIControlEventTouchUpInside];
    [bgView addSubview:newGuidBtn];

    

}
- (void)clickBtnToGuid:(UIButton *)sender
{
   // 点击之后移除到父类view
    [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"secondCouponBoard_iPhone"];
    [sender.superview removeFromSuperview];
   
}