Question

这是我的JSON回复，

 {
        "AppConfig": {
            "store_logo": "url",
            "deal_status": "A",
            "see_the_menu_btn": "A",
            "store_id": "3",
            "store_name": "  Pizza Restaurant",
            "bg_image": "www.my image.png"
        }
    }

 NSString *localwthr = [NSString stringWithFormat:@"my url"];
    NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:localwthr]];
    [[NSURLConnection alloc] initWithRequest:request delegate:self];
- (void)connectionDidFinishLoading:(NSURLConnection *)connection{
    if (responsedata) {
        NSDictionary *Dictionarydetails = [NSJSONSerialization
                                           JSONObjectWithData:responsedata
                                           options:kNilOptions
                                           error:nil];
        NSLog(@"The return data is: %@",Dictionarydetails);

        NSString *imgURL=[[Dictionarydetails objectForKey:@"AppConfig"]objectForKey:@"bg_image"];
        UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0,0,100,100)];
        imageView.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: imgURL]]];
    }
}

我需要获取密钥bg_image的网址值，下载图片并在UIImageView中设置。我怎么能这样做？

Answer 1

imageUrl永远不会像“www.my image.png”， imageUrl就像“http://www.serverName.com/directory/..../imageName.png”

如果您的网址中有空格，则必须将其转换为UTF8格式，这是webURL的标准格式。所以你应该使用，

imgURL = [imgURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

//Use it as it shown in below code.

NSString *imgURL=[[jsonDict objectForKey:@"AppConfig"]objectForKey:@"bg_image"];
    imgURL = [imgURL stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]
    UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: imgURL]]];

喝彩！

Answer 2

从网址加载图片，然后

NSString *imgURL=[[jsonDict objectForKey:@"AppConfig"]objectForKey:@"bg_image"];
UIImage *image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: imgURL]]];

Answer 3

查看此代码，这是否是您需要的，因为rmaddy告诉您已完成的代码到目前为止

NSString *imageName=[[jsonDict objectForKey:@"AppConfig"]objectForKey:@"bg_image"];
imageview.image=[UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: imageName]]];

Answer 4

试试这个：

NSString *imgURL=[[jsonDict objectForKey:@"AppConfig"]objectForKey:@"bg_image"];
UIImageView *imageView = [[UIImageView alloc]initWithFrame:CGRectMake(0,0,100,100)];
imageView.image = [UIImage imageWithData:[NSData dataWithContentsOfURL:[NSURL URLWithString: imgURL]]];

将json数据图像解析为图像视图

4 个答案: