图片轮播

    //本地图片4
    NSArray *images = @[[UIImage imageNamed:@"h1.jpg"],
                        [UIImage imageNamed:@"h2.jpg"],
                        [UIImage imageNamed:@"h3.jpg"],
                        [UIImage imageNamed:@"h4.jpg"]
                        ];
    // 文字4
    NSArray *titles = @[@"感谢您的支持，如果下载的",
                        @"如果代码在使用过程中出现问题",
                        @"您可以发邮件到MJLios@126.com",
                        @"感谢您的支持"
                        ];
    
    //网络图片，url4
    NSArray *imagesURLStrings = @[
                           @"https://ss2.baidu.com/-vo3dSag_xI4khGko9WTAnF6hhy/super/whfpf%3D425%2C260%2C50/sign=a4b3d7085dee3d6d2293d48b252b5910/0e2442a7d933c89524cd5cd4d51373f0830200ea.jpg",
                           @"https://ss0.baidu.com/-Po3dSag_xI4khGko9WTAnF6hhy/super/whfpf%3D425%2C260%2C50/sign=a41eb338dd33c895a62bcb3bb72e47c2/5fdf8db1cb134954a2192ccb524e9258d1094a1e.jpg",
                           @"http://c.hiphotos.baidu.com/image/w%3D400/sign=c2318ff84334970a4773112fa5c8d1c0/b7fd5266d0160924c1fae5ccd60735fae7cd340d.jpg"
                           ];