如果存储在Realm中，则无法转换Int64

Question

I need to save 11 digits number in Realm, for that am using Int64 . When am reading it I need to convert it's datatype to String

let icnStr = employeeObj["icn"] as! String

but it is showing following error.

Could not cast value of type '__NSCFNumber' (0x186d21c) to 'NSString' (0xefd5e4).

Answer 1

尝试使用String(employeeObj["icn"]) ，希望对您有所帮助，不要向下转换，而是创建一个Int值的String实例。

Answer 2

You need to do following otherwise you'll be not able to unwrap it.

Use following code.

let icnStr = String(describing: employeeObj["icn"]!)

It'll unwrap Optional value, because when it becomes String you can't unwrap it. It'll give the following error.

cannot force unwrap value of non-optional type string