ios - NSNumber? to a value of type String? in CoreData -

so can't figure out, supposed change '.text' else or have go converting string double?

here code

if item != nil {     // errors keep getting each 1     unitcost.text = item?.unitcost //cannot assign value 'nsnumber?' value of type 'string?'     total.text = item?.total  //cannot assign value 'nsnumber?' value of type 'string?'     date.text = item?.date //cannot assign value 'nsdate?' value of type 'string?' } 

you trying assign invalid type text property. text property of type string? stated compiler error. trying assign nsnumber or nsdate. expected type string or nil , must ensure provide only 2 possibilities. result, need convert numbers , dates strings.

in swift, there no need use format specifiers. instead, best practice use string interpolation simple types numbers:

unitcost.text = "\(item?.unitcost!)" total.text    = "\(item?.total!)" 

for dates, can use nsdateformatter produce human-friendly date in desired format:

let formatter       = nsdateformatter() formatter.datestyle = .mediumstyle  date.text           = "\(formatter.stringfromdate(date))" 

while we're @ it, why not use optional binding instead of nil comparison:

if let item = item {     // set properties here }