ios - Accessing Data Outside of Closure -

-

i have array in class i'm trying fill within closure. however, when try access/print array contents, seems empty outside of closure. how store data use outside of closure?

for index in 0..<6 {         let picnumber = index + 1         if let pica = currentuser.objectforkey("pic\(picnumber)") as? pffile {             pica.getdatainbackgroundwithblock({ (data:nsdata!, error:nserror!) -> void in                 if error == nil {                     self.pic1 = uiimage(data: data)                     var images = scaleimage(self.pic1!, and: 200)                     self.imagesforsection0.append(images)                 }             })             println(self.imagesforsection0)         }     }

it not empty outside closure

the method getdatainbackgroundwithblock async,it means return first.so,you see nothing in print function.

document

asynchronously gets data cache if available or fetches contents network.

edit

for index in 0..<6 {     let picnumber = index + 1     if let pica = currentuser.objectforkey("pic\(picnumber)") as? pffile {         pica.getdatainbackgroundwithblock({ (data:nsdata!, error:nserror!) -> void in             if error == nil {                 self.pic1 = uiimage(data: data)                 var images = scaleimage(self.pic1!, and: 200)                 self.imagesforsection0.append(images)             }         println(self.imagesforsection0)         //then call reload data         })     } }

Comments

Post a Comment

Popular posts from this blog

qt - Using float or double for own QML classes -

-
i've created components , helper methods using c++ , qt used in qml gui. of methods calculate gui elements (size, transformations, scene graph items creation). target arm 32 bit using opengl / eglfs render output. opengl using float , qml using real (defined double ). what should use in c++ do not lose precision? if use qreal ( double ) shouldn't lose precision. if git grep float in qtbase.git , can find out bit more: dist/changes-5.2.0-**************************************************************************** dist/changes-5.2.0-* important behavior changes * dist/changes-5.2.0-**************************************************************************** dist/changes-5.2.0- dist/changes-5.2.0- - qt compiled qreal typedef'ed double on dist/changes-5.2.0: platforms. qreal float on arm chipsets before. guarantees more dist/changes-5.2.0- consistent behavior between platforms qt supports, binary dist/chan...
Read more

Create Outlook appointment via C# .Net -

-
i need create outlook appointment using microsoft.office.interop.outlook , while can work locally on own workstation , works if run web application via server's browser, not work when connect server externally. hence, think might permission issue. i changed application pool identity " localsystem " don't access denied error. unfortunately, doesn't work. the app behaves if appointment created, appointment doesn't appear in outlook. here include file on top of aspx.cs page using outlook = microsoft.office.interop.outlook; here code using pop appointment. outlook.application apptapp = new outlook.application(); outlook.appointmentitem appt = apptapp.createitem(outlook.olitemtype.olappointmentitem) outlook.appointmentitem; appt.subject = txtfirstname.text + " " + txtlastname.text; appt.body = txtcomment.text; appt.alldayevent = false; appt.start = datetime.parse(txtreminderdate.text + " 8:00 am"); appt.end = datetime.p...
Read more

ios - Swift Array Resetting Itself -

-
i have 2 arrays: pointhistory , datehistory . have nstimer , , when timer runs out, action called. in action appending int pointhistory , , current date string datehistory . here timer action: func timeraction() { let steppervalue = int(stepper.value) employee.numberofpoints = steppervalue networking.saveemployee(employee, completion: { (error) -> void in if error != nil { let alert = uialertcontroller(title: "error", message: "there error updating \(self.employee.name)'s points", preferredstyle: .alert) let alertaction = uialertaction(title: "ok", style: .cancel, handler: nil) alert.addaction(alertaction) self.presentviewcontroller(alert, animated: true, completion: nil) } }) var dateformatter = nsdateformatter() dateformatter.dateformat = "mm-dd-yyyy" dateformatter.timezone = nstimezone.localtimezone() var date = nsdate() var ...
Read more