Questions tagged as 'xcode'

Tagged questions
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Big icon in storyboard (xcode 10)

I just updated my Xcode to 10.0, suddenly all UIImageView and UIButton icons take the biggest one (2x). How can I go back to see a "REAL" preview when designing on the storyboard? On the Storyboard: In the emulator: thank yo...
asked by 14.10.2018 / 05:58
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Error trying to pass data with segue

I am trying to send an Url to a Webkid View depending on the button that is pressed on the main screen however I get the error Fatal error: Unexpectedly found nil while unwrapping an Optional value , and no I find a solution, I am very new to t...
asked by 10.10.2018 / 16:55
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Problem Xcode 10 program App PDF reader

I wanted to know if you can help me with this problem. I am creating a pdf reader app but it gives me an error that I can not move forward with. "Value of type 'ViewController2' has no member 'namePdfReceived' The error is this and I do not know...
asked by 07.10.2018 / 12:53
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Thread 1: signal SIGABRT

Problem in Xcode10 I get this error, how to fix it ???? thread 1 queue com.apple.main-thread (serial)     
asked by 08.10.2018 / 21:09
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error: Multiple commands produces Xcode 10

Hi, I just updated my Xcode 9.4 to version 10 and now when I try to compile an application that was running very well, it gives me this error.    error: Multiple commands produce   '/ Users / ericksilva / Library /.../ InstallationBuildProduc...
asked by 09.10.2018 / 02:23
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Signing certificate "XXX", serial number "XXX", is not valid for code signing

I was recently given a code in ionic to fix some bugs. The problem is to upload the application to the appstore. In Xcode in Signing (Debug) and in Signing (Release) I get the following error:    Signing certificate "XXX", serial number "XXX"...
asked by 27.09.2018 / 03:28
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When the app is suspended a long time after it does not start, swift xcode

I am developing an app in swift and Xcode , I use Core Data . Already in tests, when I leave the app in the background normally nothing happens but sometimes (a long time inactive: 18 - 24 hours) it does not start neither the app in the b...
asked by 23.08.2018 / 11:38
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React-native release build error on iOS: ld: library not found for -lReact

I'm doing a build with react-native in Xcode with the Release schema and it gives me the following error:    ld: warning: directory not found for option   '-L / Users / username / Library / Developer / Xcode / DerivedData / ProjectName-...
asked by 31.07.2018 / 13:45
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Thread 1: Fatal error: Unexpectedly found nil while unwrapping an Optional value Xcode

Hi, I have an error in my Xcode project. I am trying to integrate the WebView logic to integrate the following code: import UIKit import WebKit class ViewController: UIViewController { @IBOutlet weak var reser: WKWebView! @IBOutlet...
asked by 21.07.2018 / 01:41
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Problem Swift with Webservice

Hi, I'm doing a simple app to learn how to use WebService but I have a problem. On the line where I initialize task I get the following error when I execute it and I give the button to call the service .    Thread 1: Fatal error:...
asked by 17.07.2018 / 23:33