ios 在 xcode 8 Swift 3 中键入“Any”没有下标成员
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Type 'Any' Has no Subscript Members in xcode 8 Swift 3
提问by DaVinci1223
My App is supposed to go to a specific location to pull down the website it needs to load. In 2.3 it worked like a charm, but since I've updated xcode (which I don't have a ton of experience in) it is giving me the error "type 'Any' has no subscript members" and highlighting the "json" right before line three
我的应用程序应该转到特定位置以下拉它需要加载的网站。在 2.3 中它就像一个魅力，但自从我更新了 xcode（我没有很多经验）它给了我错误“类型'Any'没有下标成员”并突出显示“json”就在第三行之前
...Retriever = json["WEB"]...
this is the code related to it.
这是与之相关的代码。
let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments)
if let Retriever = json["WEB"] as? [[String: AnyObject]] {
for website in Retriever {
if let name = website["URL"] as? String {
self.loadAddressURL(name)
I feel like I am missing something small. If there is a better way to do this, I would love suggestions. The URL returns this JSON
我觉得我错过了一些小事。如果有更好的方法来做到这一点，我希望得到建议。URL 返回此 JSON
{
"WEB" : [
{
"URL" : "http://www.google.com"
}
]
}
but I would love it if I could simplify it to just
但如果我能把它简化成这样，我会很喜欢的
{"URL":"http://www.google.com"}
回答by Bista
Try this:
尝试这个：
let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as! [String:AnyObject]
Safe way:
安全方式：
do {
if let json = try JSONSerialization.jsonObject(with: data!, options:.allowFragments) as? [String:Any] {
print(json)
}
} catch let err{
print(err.localizedDescription)
}
You have to cast type Anyto Swift dictionary type [String:AnyObject].
您必须将 type 转换Any为 Swift 字典 type [String:AnyObject]。
Edit: Swift 3
In swift 3 the purpose of AnyObjectis more clarified. So more favourable Swift Dictionary type will be [String:Any].
编辑：Swift 3
在Swift 3 中，目的AnyObject更加明确。所以更有利的 Swift 字典类型将是[String:Any].
Anyis an alias for any data type.AnyObjectis an alias for any data type derived from a class.
Any是任何数据类型的别名。AnyObject是从类派生的任何数据类型的别名。
For more info visit: https://craiggrummitt.com/2016/09/16/any-vs-anyobject-vs-nsobject-in-swift-3/
欲了解更多信息，请访问：https: //craiggrummitt.com/2016/09/16/any-vs-anyobject-vs-nsobject-in-swift-3/
