通常情况下,以下代码可以正常工作,但有时我认为,JSON 返回 nil 并遇到 fatal error 。如果数据为零我该如何处理。
我在以下行遇到 EXC_BAD_INSTRUCTION 错误:
let profileJsonArray = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSArray
感谢您的帮助。
do {
let profileJsonArray = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSArray
if let parseJSONArray = profileJsonArray {
self.myProfileinfo = parseJSONArray
let name: String? = self.myProfileinfo[0].valueForKey("fullname") as? String
let messsage: String? = self.myProfileinfo[0].valueForKey("message") as? String
let infourl: String! = self.myProfileinfo[0].valueForKey("thumb") as? String
let prourl: String! = self.myProfileinfo[0].valueForKey("prothumb") as? String
let email: String? = self.myProfileinfo[0].valueForKey("email") as? String ...
最佳答案
读取网络响应时,应先检查是否有错误。
NSSession
例如:
let task = session.dataTaskWithRequest(request, completionHandler: {data, response, error -> Void in
if error {
// Deal with error, e.g.
print(error)
}
else {
do {
// Use data or response
let profileJsonArray = try NSJSONSerialization.JSONObjectWithData(data!, options: .MutableContainers) as? NSArray
// ....
}
catch {
// Deal with error
}
}
})
task.resume();
关于ios - NSJSON序列化: unexpectedly found nil while unwrapping an Optional value,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/36279034/