我目前有一个文件名列表,我从Youtube的JSON文件中插入Alamofire.request
以最终.append
"videoId"
。当我将搜索查询硬编码到我知道会导致视频结果的列表中时,它的效果非常好。但不幸的是,列表中的某些文件名找不到任何视频。这导致fatal error: Index out of range
我希望找到一种方法,以便在"videoId"
无效时继续使用列表中的下一个项目。我已尝试过else
,continue
等,但却永远无法做到。所以这个例子没有尝试迭代错误的搜索
我对编码很陌生,所以如果我完全离开,请随时改变。
这是我的代码。这是我的函数内部,它也获取我想要的文件名并将它们插入[String]
for i in testList {
Alamofire.request("https://www.googleapis.com/youtube/v3/search?key=\(API_Key)&part=snippet&q=\(i)%20Music%20Video&maxResults=1&type=video&order=relevance").responseJSON { (response) in
print("Result: \(response.result)")
var json = JSON(response.result.value as Any)
print(json)
if let _ = json["items"].array{
if json["items"].arrayValue[0]["id"].exists(){
let songPath = json["items"].arrayValue[0]["id"]
let videoIdPath = songPath["videoId"].stringValue
var arrayOfVideos = ""
arrayOfVideos.append(videoIdPath)
print(arrayOfVideos)
videoArray += [arrayOfVideos] }
这是关于上下文的YouTube请求回复
Result: SUCCESS
{
"items" : [
{
"etag" : "\"95M1zlW0txkV42I4OG1Zscxrg5A\/TwSmd4IGGf1uBi-y10rCaZ53JsU\"",
"kind" : "youtube#searchResult",
"id" : {
"kind" : "youtube#video",
"videoId" : "9jfhlttiQws"
},
"snippet" : {
"thumbnails" : {
"default" : {
"url" : "https:\/\/i.ytimg.com\/vi\/9jfhlttiQws\/default.jpg",
"width" : 120,
"height" : 90
},
"high" : {
"url" : "https:\/\/i.ytimg.com\/vi\/9jfhlttiQws\/hqdefault.jpg",
"width" : 480,
"height" : 360
},
"medium" : {
"url" : "https:\/\/i.ytimg.com\/vi\/9jfhlttiQws\/mqdefault.jpg",
"width" : 320,
"height" : 180
}
},
"channelId" : "UCdWVO7O7stk7MNKVARRV8rw",
"title" : "LUAM - Clockwork Indigo (The Flatbush ZOMBiES + The Underachievers) (LYRICS)",
"publishedAt" : "2014-10-19T01:37:31.000Z",
"description" : "LUAM by clockwork Indigo consisting of Beast Coast rap groups Flatbush ZOMBiES & The Underachiever off of their collaborative Debut Mixtape \"Clockwork ...",
"liveBroadcastContent" : "none",
"channelTitle" : "JayMendezTv"
}
}
],
"kind" : "youtube#searchListResponse",
"nextPageToken" : "CAEQAA",
"regionCode" : "US",
"pageInfo" : {
"resultsPerPage" : 1,
"totalResults" : 10073
},
"etag" : "\"95M1zlW0txkV42I4OG1Zscxrg5A\/KIryoSi8eZnM0UdfR0ZqyaHGB_k\""
}
9jfhlttiQws
答案 0 :(得分:0)
没有人回答我的问题,但幸运的是我自己找到了解决方案。如果未找到Youtube结果,"items"
数组将为空,因为找不到"videoId"
。所以我所要做的就是在代码中添加if
语句,如此
if let items = json["items"].array{
if items.isEmpty{
return
}
else {