我正在学习swift的过程。我在我的swift代码中使用了ANetworking(Obj C中的库)。我已经成功地返回了解析的JSON。但是我想查找返回的json项的计数。这是我到目前为止所做的:
//in viewDidAppear function
manager.GET(url,
parameters: nil,
success: { (operation: AFHTTPRequestOperation!, responseObject: AnyObject!) in
self.jsonFunc(responseObject.description)
我在stackoverflow中做了以上这样的问题:AFNetworking and Swift - Save json response
现在,在函数jsonFunc中,我试图获取json数据的计数如下:
func jsonFunc(data: AnyObject) {
let count: Int? = data.count // I understand that data is AnyObject. How to typecast and get the number of data items here?
if let ct = count {
println(ct)
for index in 0...ct-1 {
if let parsedData = data[index] as? [String: AnyObject] {
println(parsedData)
}
}
}
}
我在做什么/在这里失踪的转换错误是什么?
答案 0 :(得分:0)
默认情况下,AFHTTPRequestOperationManager将responseSerializer设置为AFJSONResponseSerializer实例,因此responseObject已经将您解析的JSON设置为Dictionary。这是代码(重构为在转换和输入时删除一些冗余):
func jsonLoaded(responseObject: AnyObject) {
if let data = responseObject as? NSDictionary {
let count = data.count
print(count)
for index in 0..<count {
//data -- urls for the apps that the user has (for the current logged in user)
if let parsedData = data[index] as? [String: AnyObject] {
print(parsedData)
}
}
}
}