Question

我在正确访问从Flickr数据（flickr.photosets.getPhotos调用）构建的NSDictionary时遇到问题。它不仅仅显示描述标记的内容，而是读取描述标记...以及一些不必要的数据和引号。

例如：

NSLog (@"Item description readout: %@", itemDescriptionPre);

产生这种回应：

Item description readout: {
    "_content" = "This is a caption from a photo drawn through Flickr";
}

我试图用这个

修改NSString

NSString *descripTruncated = [itemDescriptionPre substringFromIndex:17];

但它并没有在运行时导致崩溃。它也没有解决项目末尾的项目。我很抱歉，因为NSString修改似乎在这里有很多讨论，但我找不到反映我的情况。

以下是我的代码的更多上下文：

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data 
{
NSString *jsonString = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];

NSLog(@"Storing incoming data");

NSDictionary *results = [jsonString JSONValue];

NSLog(@"Building NSDictionary.");

NSArray *photos = [[results objectForKey:@"photoset"] objectForKey:@"photo"];

NSLog(@"Building array from dictionary.");

// Loop through each entry in the dictionary...
for (NSDictionary *photo in photos)
{
NSString *title = [photo objectForKey:@"title"];

    NSString *description = [photo objectForKey:@"description"];

[photoTitles addObject:title];

    [photoDescriptions addObject:description];

}

NSLog(@"Nicer display for results: %@ First image title: %@ First image description: %@", results, [photoTitles objectAtIndex:0], [photoDescriptions objectAtIndex:0]);

[self updateDisplay];

}


-(void) updateDisplay{

NSString *capTitle = [[photoTitles objectAtIndex:0] uppercaseString];

photoTitleDisplay.text = capTitle;

NSString *itemDescriptionPre = [photoDescriptions objectAtIndex:0];

NSLog (@"Item description readout: %@", itemDescriptionPre);

}

Answer 1

itemDescriptionPre实际上是NSDictionary。这应该有效：

NSDictionary *itemDescriptionPre = [photoDescriptions objectAtIndex:0]; 
NSString *itemDescription = [itemDescriptionPre objectForKey:@"_content"];

处理从Flickr解析的NSDictionary内容

1 个答案: