如何显示来自 JSON 的图像的水平滚动视图

Posted 2023-03-11

【中文标题】如何显示来自 JSON 的图像的水平滚动视图

【英文标题】：how to display horizontal scrollview of images from the JSON

【发布时间】：2017-01-24 10:22:35

【问题描述】：

我的 JSON 响应

 "result":0,"data":["bannerslider_id":"1","img":"http:\/\/whatsinthestreet.com\/media\/bannerslider\/images\/slider1.jpg","bannerslider_id":"2","img":"http:\/\/whatsinthestreet.com\/media\/bannerslider\/images\/slider2.jpg","bannerslider_id":"3","img":"http:\/\/whatsinthestreet.com\/media\/bannerslider\/images\/slider3.jpg","bannerslider_id":"4","img":"http:\/\/whatsinthestreet.com\/media\/bannerslider\/images\/slider4.jpg"]

我写了这样的代码

(void)viewDidAppear:(BOOL)animated
    [[[NSURLSession sharedSession] dataTaskWithURL:[NSURL URLWithString:@"http://whatsinthestreet.com/allbanners.php"] completionHandler:^(NSData * _Nullable data ,NSURLResponse * _Nullable response,NSError * _Nullable error)
        NSLog(@"response %@",response);
        NSLog(@"data %@",data);
        NSDictionary *dict=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
        NSLog(@"dict%@",dict);
       NSArray *array;
        array=[dict valueForKey:@"data"];
       NSLog(@"%@",array);

我得到的回应是

 dict
    data =     (
                
            "bannerslider_id" = 1;
            img = "http://whatsinthestreet.com/media/bannerslider/images/slider1.jpg";
        ,
                
            "bannerslider_id" = 2;
            img = "http://whatsinthestreet.com/media/bannerslider/images/slider2.jpg";
        ,
                
            "bannerslider_id" = 3;
            img = "http://whatsinthestreet.com/media/bannerslider/images/slider3.jpg";
        ,
                
            "bannerslider_id" = 4;
            img = "http://whatsinthestreet.com/media/bannerslider/images/slider4.jpg";
        
    );
    result = 0;

如何从这些值访问图像以获取图像的水平滚动视图？

【问题讨论】：

[array valueforkey:@"img"] objectAtIndex:0] 你得到了第一个横幅图片

您的滚动视图代码在哪里？你在哪里创建图像？

【参考方案1】：

这应该适合你。

-(void)viewDidAppear:(BOOL)animated
    [[[NSURLSession sharedSession] dataTaskWithURL:[NSURL URLWithString:@"http://whatsinthestreet.com/allbanners.php"] completionHandler:^(NSData * _Nullable data ,NSURLResponse * _Nullable response,NSError * _Nullable error)
        NSLog(@"response %@",response);
        NSLog(@"data %@",data);
        NSDictionary *dict=[NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableLeaves error:nil];
        NSLog(@"dict%@",dict);
       NSArray *array;
        array=[dict objectForKey:@"data"];
       NSLog(@"%@",array);
       for(id obj in array)
       
            NSString *urlStr=[obj objectForKey:@"img"];
        

【讨论】：

@Bhavani chada 现在您必须将 urlsrt 转换为 NSURL 对象，然后您可以继续前进.... 干杯