【发布时间】：2017-12-17 05:34:15
【问题描述】：
我想打印“items”、“sn-p”中的每个“标题”，但我的 for 循环由于某种原因没有执行。如果有人可以帮助我，请提前致谢。
代码：
let url = URL(string: "https://www.googleapis.com/youtube/v3/search?key=\(key)&channelId=\(channelID)&part=snippet,id&order=date&maxResults=20")
let task = URLSession.shared.dataTask(with: url!) { (data, response, error) in
if error != nil {
print("ERROR")
} else {
if let content = data {
do {
let json = try JSONSerialization.jsonObject(with: content, options: JSONSerialization.ReadingOptions.mutableContainers) as AnyObject
print(json)
for _ in json as! [String: AnyObject] {
if let items = json["items"] as? NSDictionary {
print(items)
if let snippet = items["snippet"] as? NSDictionary {
print(snippet)
if let title = snippet["title"] as? NSDictionary {
print(title)
}
}
}
}
} catch {
print("ERROR")
}
}
}
}
task.resume()
JSON - 我把它缩短了很多，因为有一个限制 - 我从 Google 收到的是：
{
etag = "\"m2yskBQFythfE4irbTIeOgYYfBU/VCbtvQebUdRw3e7_zJbfxm0jID4\"";
items = (
{
etag = "\"m2yskBQFythfE4irbTIeOgYYfBU/LEyFeYOSX6YKSwwyN5aSWbiKNcA\"";
id = {
kind = "youtube#video";
videoId = YT6G4Cg60xE;
};
kind = "youtube#searchResult";
snippet = {
channelId = UCuP2vJ6kRutQBfRmdcI92mA;
channelTitle = "Lets Build That App";
description = "Facial detection is a new piece technology that's getting better and better over time. However, upon trying out Apple's new Vision API we can see that there is still ...";
liveBroadcastContent = none;
publishedAt = "2017-07-12T15:00:06.000Z";
thumbnails = {
default = {
height = 90;
url = "https://i.ytimg.com/vi/YT6G4Cg60xE/default.jpg";
width = 120;
};
high = {
height = 360;
url = "https://i.ytimg.com/vi/YT6G4Cg60xE/hqdefault.jpg";
width = 480;
};
medium = {
height = 180;
url = "https://i.ytimg.com/vi/YT6G4Cg60xE/mqdefault.jpg";
width = 320;
};
};
title = "Is Apple's Vision Racially Biased?";
};
},
{
etag = "\"m2yskBQFythfE4irbTIeOgYYfBU/zooINPhLwlR1Dm6MxGKbMzeFtMY\"";
id = {
kind = "youtube#video";
videoId = hPQIRIl977I;
};
kind = "youtube#searchResult";
snippet = {
channelId = UCuP2vJ6kRutQBfRmdcI92mA;
channelTitle = "Lets Build That App";
description = "I often get questions about how I got started in programming and what kind of portfolio projects to include in a resume. Well, let me show you a video I uploaded ...";
liveBroadcastContent = none;
publishedAt = "2017-07-10T15:00:06.000Z";
thumbnails = {
default = {
height = 90;
url = "https://i.ytimg.com/vi/hPQIRIl977I/default.jpg";
width = 120;
};
high = {
height = 360;
url = "https://i.ytimg.com/vi/hPQIRIl977I/hqdefault.jpg";
width = 480;
};
medium = {
height = 180;
url = "https://i.ytimg.com/vi/hPQIRIl977I/mqdefault.jpg";
width = 320;
};
};
title = "My First Portfolio Project when Applying for Software Jobs";
};
},
{
etag = "\"m2yskBQFythfE4irbTIeOgYYfBU/n313rK9YZDxF118LMEo6i4X_Oz4\"";
id = {
kind = "youtube#video";
videoId = ZVCMV4a3KRw;
};
kind = "youtube#searchResult";
snippet = {
channelId = UCuP2vJ6kRutQBfRmdcI92mA;
channelTitle = "Lets Build That App";
description = "Often times I take questions from you guys that watch the channel and today I wanted to flip the script and get some input. I'm genuinely curious about what you ...";
liveBroadcastContent = none;
publishedAt = "2017-07-09T19:42:59.000Z";
thumbnails = {
default = {
height = 90;
url = "https://i.ytimg.com/vi/ZVCMV4a3KRw/default.jpg";
width = 120;
};
high = {
height = 360;
url = "https://i.ytimg.com/vi/ZVCMV4a3KRw/hqdefault.jpg";
width = 480;
};
medium = {
height = 180;
url = "https://i.ytimg.com/vi/ZVCMV4a3KRw/mqdefault.jpg";
width = 320;
};
};
title = "Why do you guys watch the live stream?";
};
},
{
etag = "\"m2yskBQFythfE4irbTIeOgYYfBU/Q38Ub7-kDjTpoE407EG2kKc50xo\"";
id = {
kind = "youtube#video";
videoId = d0U5j89M6aI;
};
kind = "youtube#searchResult";
snippet = {
channelId = UCuP2vJ6kRutQBfRmdcI92mA;
channelTitle = "Lets Build That App";
description = "Face detection has been available through 3rd party APIs for a while now. Finally we have native support for this feature using Vision APIs with Xcode 9 and ...";
liveBroadcastContent = none;
publishedAt = "2017-07-08T15:00:06.000Z";
thumbnails = {
default = {
height = 90;
url = "https://i.ytimg.com/vi/d0U5j89M6aI/default.jpg";
width = 120;
};
high = {
height = 360;
url = "https://i.ytimg.com/vi/d0U5j89M6aI/hqdefault.jpg";
width = 480;
};
medium = {
height = 180;
url = "https://i.ytimg.com/vi/d0U5j89M6aI/mqdefault.jpg";
width = 320;
};
};
title = "Super Impressive and Easy Face Detection using Vision API in Swift 4";
};
},
{
etag = "\"m2yskBQFythfE4irbTIeOgYYfBU/ZADZ11_Ev4ItFjXj09gohLZCoMU\"";
id = {
kind = "youtube#video";
videoId = 1RMkGkL9L3U;
};
kind = "youtube#searchResult";
snippet = {
channelId = UCuP2vJ6kRutQBfRmdcI92mA;
channelTitle = "Lets Build That App";
description = "Today we answer a question on how helpful Udemy, Udacity, or formal education from colleges are when it comes to learning new skills required for contracting ...";
liveBroadcastContent = none;
publishedAt = "2017-07-05T15:00:01.000Z";
thumbnails = {
default = {
height = 90;
url = "https://i.ytimg.com/vi/1RMkGkL9L3U/default.jpg";
width = 120;
};
high = {
height = 360;
url = "https://i.ytimg.com/vi/1RMkGkL9L3U/hqdefault.jpg";
width = 480;
};
medium = {
height = 180;
url = "https://i.ytimg.com/vi/1RMkGkL9L3U/mqdefault.jpg";
width = 320;
};
};
title = "How I Learn New Skills for the Job - Udemy, Udacity, College, Google?";
};
},
【问题讨论】：
标签： ios swift youtube-api