Swift3 Questions

I want to add an extra image on the uibutton if my condition is true. this means that if the result of my condition is: 1) "false", then

I am new to swift and am in the learning phase. i have to basically make a request using urlsession but the api does not allow any

I have 2 records in my users table

Why ever function return nil?! i try add dispathque but i don't understand how it should be right! pls help func

I am beginner, working with firebase i loaded a dictionary from firebase database which is as follow:

My problem is pretty simple: i have a lot of user scores in my database (i'm using firebase by the way) i would like to get

When user login done successfully, it takes to home screen. when user taps on user icon button will take to user account details page. here i have

This questions has been asked and answered many times before, yet i can't figure out what i am doing wrong. sending notifications to the whole app

I am making the chat app using jsqmessage library and firebase back-end service. i got the problem when user send a lot of media messages like

Can i add long press event for alert controller in action sheet mode. if user long pressed want show one more pop in normal alert

Please see the video for animation issue in uitableview. when i get the data from the api and refresh cell than the first cell animation issue

I am facing issue with parsing response from server side. i get response in this format 1.)

Please, i need help with are problem, i changing the syntax swift 3 for swift 4 and now i have many problems for identification of all my bugs.the

I already have a polyline in swift4, how can i make the style of it to dashed/dotted line ?? let path = gmsmutablepath(path:

My app functions correctly, but when i enable an "all exception" breakpoint it fails during this segue (gotohome). if i

App configuration this is my configuration with

I have a variable declared as such: private var thetext = string() private var aid = string() i then do a fetch

I got html string from api like this: let a: string = "<a href="https://www.google.com.tw">https://www.google.com.tw

I'm using kilabel for my swift project, in order to transform hashtags to links. my problem is that the regex function that i did is capturing

I want to achieve this type of animation.please check this url

So i've implemented universal link in my app and when pressing on a button i open my second app with :

I'm getting values of string in my response to whom i'm storing in an array. its is storing properly.now i want to get that values out of my array

I am creating an music player ios app and getting data from firebase. i can able to control play, pause, next and previous in simulator or iphone.

Using xcode 9.1 i am trying to create to start level simple framework in swift and use the same in objective c or swift proj. but i am getting a

Ok, this is only happening with one part of my text, with 1 set of labels - i explicitly set, many times, my custom uilabel's line break style to

I am working on rest api's in ios application. i have tested server url and parameters

How do i set a horizontal orientation to a collection view in swift? i need want the row layout to be like the picture below.

I want to give condition on pickerview row, but it just giving me error. binary operator cannot be applied to operands.

Basically the task is to load new api response as the user scrolls to down in uitableview without stopping user interaction and

Here i just placed one search bar controller which default design in xcode. can any will help me to make search bar likes the second one?

I want to set the datepicker date from string.i have a multiple date in view and i am using date picker via iboutlet for different string date

In all devices the table view needs to be display only 70% of the screen irrespective of all devices and it should need to display only from

So i have a list of friends coming from the api and i've tried to implement also the search functionality. so far, so good, the filtering is good,

I have to show a view on the current view controller that is being displayed on recieving a push notification. i want that i make one view that

I want to parse a json file using unbox library. the json is an array of dictionary array. how can we do that? i tried using keypath and all but

I converted my code from swift 3 to swift 4 but getting this error: type 'nsattributedstringkey' has no member

I am trying to synchronize the actual measurement value from measurement characteristic uuid of and ble weight scale model no:

So i have 2 view controllers that i want to pass values in between and have the following code @ibaction func analysisbutton(_

Here i have

I integrated waze into my swift app, but when i click on the button, waze opens but nothing happens with the navigation. i juste see the app and

I have implemented push-notifications into my project and everything works fine so far. i've tried sending notifications through pusher and this

I'm kinda new to uicollectionviewflowlayout sophisticated topics, and yes!! i have checked all topic-related questions but still i'm

I am new to ios development.i want to toggle (hide/visible) a subview from parent view.in android there is a way to hide the visibility to

I added a scroll view to my view which is hover the status bar (i hid it). the scroll view is working fine, but when i'm scrolling to the top, i

I would display a view in my ios app, but when i try to use scrollview, even if i put stack views, it doesn't work. here is a screenshot

I have an array of dictionaries that i get as a json response to a url jsonresponse1 = [{"id":"100", "name":"matt",

I created a uilabel and synced its font size with a seekbar and loaded my html formatted text onto the uilabel. unfortunately, the format gets

Hi i want to cache my images coming from json. i have made a networkservice which downloads and parse the json and i use the func downloadimage()

I have a project (xcode 9) that uses a lots of 3rd party libraries. some of them are written in swift 3 (only) and some other in swift 4

I just created an application to notify the task in a specific time.and it's working perfectly on time. if i click on the notification bar it

My first array is arr1 = [1, 2, 3, 4 , 5] my second array is arr2 = [2, 3, 4]

I am working on an app which fetches data from firebase. the code i am going to show you works just fine but even as a rookie i know that

I am creating extension of uifont, it gives an error. i am attaching a screenshot of it. this error goes away when import

Say i have view controllers a, b, c, d & e all embedded in a navigation controller. in view controller b, i have a custom uiimageview object.

I want to use private database of cloudkit for my app, so for designing i was looking for something which would easily map my model classes to

I just launched the app and i have an issue with iphone 5 and 5c and ios 10.3.3 (only).

I have two view controllers, the first one has two buttons, signup and login, the second vc does the function of signup and login stuff (i wrote

This is the workflow of my app: user can select a default printer from app's settings page and will use this default printer to print

I want to make a tableview with a button in the section. i want the button to add one more row to a tableview like this

So i've taken my bundle version and save it in an array but it s of type string. i ve tried and .map it to be int but i receive cannot

I have been battling to get this to work. i have written a function to try and check if the user is logged in or not and if they are not they will

I have two controller, one controller is controllerone.swift, in this i receive notifications and i need when one notification arrive, show a

I know that there is much question about this problem on so, but none of them was helpful for me. i want to set array of students to each

I have data coming from json and populating it inside an uiimage using alamofireimage. one of those elements that i am getting back from json is a

Code:- let addedtime = dictmessage?.object(forkey: "added_time") as? string let timeinterval : timeinterval = (addedtime as

I have an app which shows a screensaver when it detects that there is no user action. currently, it is working as the images for the screensaver

I not find what is my problem. i need to give space between one cell and another. i wrote self.tableview storyline.delegate = self because

I've converted my ios project from swift 2.x to swift 3.x there are now more then 50 errors in my code. one of the most common is this one "cannot

I have no idea where i'm wrong. the text is always aligned from the left . func tableview(_ tableview: uitableview,

We see a sporadic crash in our user base, during a routine read from nsuserdefaults. the overwhelming majority of users don't

I know there is only minimum spacing between items and you can achieve that via size inspector or func collectionview(_

I have two buttons which are on different cells from the table and i want them aligned . the first cell is consisted from 3 buttons and i

i need an explanation about for in loops in swift. let's consider the following example. public struct person { let

I'm looking for a way to convert swift3 list var mylist = [myobject](); to json. i used:

I want to create like this ( done through storyboard )

I have been reading similar questions and until now neither has solved this error or i have not found it. i have a tableview and i need

I am using rncryptor in my application. i generated an encrypted string for a plain text using a password and when i try to

I have implemented custom uitabbarcontroller first and second uitabbaritem is a

I am having an issue regarding closure escaping.the closure is defined as escaping but somehow the compiler always gives an error. the

How to get selected index of uitabbar item in swift i am not talking about uitabbarcontroller. i know i can get using

I want to use autocompleteviewcontroller in a special area with this lat and long let southwest_latitude = 35.60; let

I am converting old swift 2 code to swift 3 and i am facing difficulty in converting following for loop for (var nsize =

I am trying set size programmatically of left button bar item but i can't it. this is my code: let backbutton =

I'm trying to loop through array and get the coordinates but it's giving me an error and i can't access my array. the data is passed through a

I'm trying to store the drop pin destination coordinates and pass them back through the delegate? i have the below drop pin function.

I am new to couchbase as well as nosql. i can upload data on couchbase db and retrieve them through enumerator and show them in a table view. but

I am passing "01/12/2017" in the fromdate.text(textfield), but receiving unexpected output. let formatter =

I'm currently trying to add an animation to the user's xp bar. if i had the animation in the collectionviewcontroller, the animation is

I'm trying to create tableview where the arrays are being sorted and put in there respective sections. i followed this tutorial:

Though till swift 3 we used didreceiveremotenotification userinfo: [anyhashable : any] method its working fine, but in swift 4 its

I have 2 entities one customers and other is cases, the relationship is one to many one customer had many cases and the relation names tocustomers