**Answer valid through Xcode 7, 8, 9, 10, 11 and 12+**

----------

**You can not archive,** because from target you have not selected **device** or **Generic iOS device** or **Any iOS Device** , still there is a simulator.

Nothing generic or wrong with Xcode 7. This happens with all Xcode versions.

----------

- **Problem - Why archived button is grayed out?**

[![enter image description here][1]][1]

----------

- **Solution - Why archived button is not grayed out?**

[![enter image description here][2]][2]

In Xcode 12 it is named **Any iOS Device**

[![Xcode 12][3]][3]


  [1]: https://i.stack.imgur.com/qVfLV.png
  [2]: https://i.stack.imgur.com/2tJ0H.png
  [3]: https://i.stack.imgur.com/TAbEA.png

Why does

    ZonedDateTime now = ZonedDateTime.now();
    System.out.println(now.withZoneSameInstant(ZoneOffset.UTC)
    		.equals(now.withZoneSameInstant(ZoneId.of(&quot;UTC&quot;))));

print out `false`?

I would expect the both `ZonedDateTime` instances to be equal.

What is the difference between ZoneOffset.UTC and ZoneId.of(&quot;UTC&quot;)?

I am getting this error in the Google chrome developer console.

&gt; Failed to parse SourceMap:
&gt; http://localhost:15132/Scripts/_External/igniteui/css/themes/infragistics/infragistics.theme.css.map


How do I fix it?

ESRI : Failed to parse source map

Would you be able to help me understand the reason why Archive button is grayed out in Xcode?

[![screenshot][1]][1]

I have all developers profiles downloaded 

[![screenshot][2]][2]

Device type set to iPhone 6

 [![http://i.stack.imgur.com/fMkmN.png][3]][3]

And archive is checked in scheme.

[![http://i.stack.imgur.com/66pRt.png][4]][4]


  
  


  [1]: http://i.stack.imgur.com/gj9Sg.png
  [2]: http://i.stack.imgur.com/gXzqM.png
  [3]: http://i.stack.imgur.com/fMkmN.png
  [4]: http://i.stack.imgur.com/66pRt.png

Archive button grayed out in Xcode

Would you be able to help me understand the reason why Archive button is grayed out in Xcode?
<a href="http://i.stack.imgur.com/gj9Sg.png" target="_blank" rel="noopener noreferrer"><img src="http://i.stack.imgur.com/gj9Sg.png" alt="screenshot"></a>
I have all developers profiles downloaded
<a href="http://i.stack.imgur.com/gXzqM.png" target="_blank" rel="noopener noreferrer"><img src="http://i.stack.imgur.com/gXzqM.png" alt="screenshot"></a>
Device type set to iPhone 6
<a href="http://i.stack.imgur.com/fMkmN.png" target="_blank" rel="noopener noreferrer"><img src="http://i.stack.imgur.com/fMkmN.png" alt="http://i.stack.imgur.com/fMkmN.png"></a>
And archive is checked in scheme.
<a href="http://i.stack.imgur.com/66pRt.png" target="_blank" rel="noopener noreferrer"><img src="http://i.stack.imgur.com/66pRt.png" alt="http://i.stack.imgur.com/66pRt.png"></a>

I am trying to get desired color rendered in the background of Tab Bar however I am facing problems. 
These are the things that I tried :-
 
1. Changing the background color of tab bar object from storyboard. The color rendered is always lighter than the desired color.

2. Programmatically  changing the color of the tab bar using the following code inside `viewDidLoad()` method

            self.tabBar.translucent = false
            self.tabBar.backgroundColor = UIColor(hexString: &quot;323B61&quot;)

    It doesn&#39;t change the color. Instead , the color rendered is white. 


How can I get the desired color for Tab Bar?

 

Changing the background color of Tab Bar

I used UICollectionView (flowlayout) to build a simple layout.
the width for each cell is set to the width of screen using `self.view.frame.width`

but when I rotate the device, the cells don&#39;t get updated.

[![enter image description here][1]][1]

I have found a function, which is called upon orientation change :

    override func willRotateToInterfaceOrientation(toInterfaceOrientation: 
      UIInterfaceOrientation, duration: NSTimeInterval) {
        //code
    }
but I am unable to find a way to update the UICollectionView layout

The main code is here:

    class ViewController: UIViewController , UICollectionViewDelegate , UICollectionViewDataSource , UICollectionViewDelegateFlowLayout{
    
        @IBOutlet weak var myCollection: UICollectionView!
        
        var numOfItemsInSecOne: Int!
        override func viewDidLoad() {
            super.viewDidLoad()
            
            numOfItemsInSecOne = 8
            // Do any additional setup after loading the view, typically from a nib.
        }
    
        override func didReceiveMemoryWarning() {
            super.didReceiveMemoryWarning()
            // Dispose of any resources that can be recreated.
        }
        
        override func willRotateToInterfaceOrientation(toInterfaceOrientation: UIInterfaceOrientation, duration: NSTimeInterval) {
            
            //print(&quot;orientation Changed&quot;)
        }
    
        func numberOfSectionsInCollectionView(collectionView: UICollectionView) -&gt; Int {
            return 1
        }
        
        func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -&gt; Int {
            return numOfItemsInSecOne
        }
        
        func collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -&gt; UICollectionViewCell {
            let cell = collectionView.dequeueReusableCellWithReuseIdentifier(&quot;cellO&quot;, forIndexPath: indexPath)
            
            return cell
        }
        
        func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -&gt; CGSize{
        let itemSize = CGSize(width: self.view.frame.width, height: 100)
        return itemSize
        }}


  [1]: http://i.stack.imgur.com/yRtxh.jpg

Swift: How to refresh UICollectionView layout after rotation of the device

I downloaded a sample project to learn how to make a UIPageViewController, and I am trying to essentially fork that project and need to add a third-party library. Right now, it does not look like I have a .xcworkspace file in my project. When I try and install the cocoapods, I first run

`sudo gem install cocoapods` - in the specific project directory in my terminal

`pod install` - in that same directory

I am receiving an error in the terminal &quot;No podfile found in the project directory.&quot;

Is this happening because I don&#39;t have a .xcworkspace file? Am I installing the podfile correctly?

[![enter image description here][1]][1]


  [1]: http://i.stack.imgur.com/6wV1K.png

Cannot Install Cocoapods - No podfile found in the project directory

I&#39;m implementing `socket.io` in my swift ios app. 

Currently on several panels I&#39;m listening to the server and wait for incoming messages. I&#39;m doing so by calling the `getChatMessage` function in each panel:

    func getChatMessage(){
        SocketIOManager.sharedInstance.getChatMessage { (messageInfo) -&gt; Void in
            dispatch_async(dispatch_get_main_queue(), { () -&gt; Void in
                //do sth depending on which panel user is
            })
        }
    }

However I noticed it&#39;s a wrong approach and I need to change it - now I want to start listening for incoming messages only once and when any message comes - pass this message to any panel that listens to it.

So I want to pass the incoming message through the NSNotificationCenter. So far I was able to pass the information that something happened, but not pass the data itself. I was doing that by:

    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(ViewController.showSpinningWheel(_:)), name: showSpinner, object: nil)

then I had a function called: 

    func showSpinningWheel(notification: NSNotification) {
    }

and any time I wanted to call it I was doing:

    NSNotificationCenter.defaultCenter().postNotificationName(hideSpinner, object: self)

So how can I pass the object `messageInfo` and include it in the function that gets called?


How to pass data using NotificationCenter in swift 3.0 and NSNotificationCenter in swift 2.0?

When trying to push an update to my cocoapod framework to the repo with ```pod trunk push``` as mentioned in the title, I get the following error:

&gt; [!] Authentication token is invalid or unverified. Either verify it with the email that was sent or register a new session.

I&#39;ve updated the cocoapod before, how do I verify my email or session?

Edit: Sometimes I also get the error: `[!] You need to register a session first.`

Error when trying to run `pod trunk push [cocoapod].podspec`

The new Xcode 7.3 passing the parameter via addTarget usually works for me but in this case it&#39;s throwing the error in the title. Any ideas? It throws another when I try to change it to @objc

Thank you!

    cell.commentButton.addTarget(self, action: #selector(FeedViewController.didTapCommentButton(_:)), forControlEvents: UIControlEvents.TouchUpInside)

The selector it&#39;s calling

    func didTapCommentButton(post: Post) {
    }

&#39;#selector&#39; refers to a method that is not exposed to Objective-C

As you all know, Apple changed how Xcode works such that you can&#39;t ever create an app with a previously used app ID, even if you&#39;re just writing test apps to use locally. Up until now I&#39;ve just been typing in garbage IDs to get around this stupid antifeature, but today I was greeted with this gem:

[![Unable to add App ID because the &#39;10&#39; App ID limit in &#39;7&#39; days has been exceeded.][1]][1]


  [1]: http://i.stack.imgur.com/elDI0.png

So now I&#39;m blocked from creating any more test apps, effectively stopping my development dead in its tracks (I write libraries and frameworks, and need to test them in test apps).

Does anyone know of a way to bypass or disable Apple&#39;s restrictions?


How to get around Apple app ID insanity

Im trying to follow the following https://stackoverflow.com/questions/28585821/none-of-the-valid-provisioning-profiles-include-the-devices as I&#39;m trying to run an application on my iPhone 5 and getting the error &quot;No matching provisioning profiles found&quot;. which is odd as it runs on my iPhone 6 fine...

when i log into developer.apple.com and click on &#39;Certificates, IDs &amp; Profiles&#39;  it takes me to &#39;https://developer.apple.com/account/#/welcome&#39; where it doesn&#39;t give me any option to add a device as all i can see is: 

[![enter image description here][1]][1]


Is there another way of fixing the error?

Any help would be appreciated.


  [1]: http://i.stack.imgur.com/8AQkM.png

Can&#39;t Access Certificates, Identifiers &amp; profiles within developer.apple.com

After looking at CocoaPods&#39; own example (from https://guides.cocoapods.org/syntax/podfile.html#abstract_target)

    # Note: There are no targets called &quot;Shows&quot; in any of this workspace&#39;s Xcode projects
    abstract_target &#39;Shows&#39; do
      pod &#39;ShowsKit&#39;
    
      # The target ShowsiOS has its own copy of ShowsKit (inherited) + ShowWebAuth (added here)
      target &#39;ShowsiOS&#39; do
        pod &#39;ShowWebAuth&#39;
      end
    
      # The target ShowsTV has its own copy of ShowsKit (inherited) + ShowTVAuth (added here)
      target &#39;ShowsTV&#39; do
        pod &#39;ShowTVAuth&#39;
      end
    
      # Our tests target has its own copy of
      # our testing frameworks, and has access
      # to ShowsKit as well because it is
      # a child of the abstract target &#39;Shows&#39;
    
      target &#39;ShowsTests&#39; do
        inherit! :search_paths
        pod &#39;Specta&#39;
        pod &#39;Expecta&#39;
      end
    end

I don&#39;t see why `inherit! :search_paths` is necessary? All 3 targets, `ShowsiOS`, `ShowsTV` and `ShowsTests` have access to `ShowsKit` from their parent target.

The specific example for `inherit!` (from https://guides.cocoapods.org/syntax/podfile.html#inherit_bang) doesn&#39;t add any clarity

    target &#39;App&#39; do
      target &#39;AppTests&#39; do
        inherit! :search_paths
      end
    end

Can you help me understand what `inherit! :search_paths` is for?

What does inherit! :search_paths do?

The situation goes a little something like this:

1. I am programming Xcode whilst concurrently listening to music on my Bluetooth headphones... you know to block out the world.

2. Then, I go to launch my app in the iOS simulator and BOOM all of a sudden my crystal clear music becomes garbled and super low quality like it is playing in a bathtub 2 blocks away... in the 1940s. 

3. Note: the quality deterioration does NOT occur if I am playing music on my laptop or cinema display and I launch the sim. It seems to be exclusively a Sim -&gt; Bluetooth issue. 

The problem is more than just annoying. Because often after stopping the simulator the crappy bathtub quality music continues. To fix it I have to open sound preferences in OSX and briefly toggle back to my laptop sound and then back to my Bluetooth headphones. 

This is a big deal because I launch the simulator 50x a day and have to do this toggle thing every time as well as suffer listening to 40s era mono ham radio quality music. 

For your information, the headphones I am using are Plantronics BackBeat Pro and I am up to date on firmware. I am on OSX 10.11.4 and Xcode 7.3... but this problem has persisted through all versions for 2+ years now. Can you save me from the 1940s?


Bluetooth headphone music quality deteriorates when launching iOS simulator

Just in case, we can delete apps by resetting contents and settings but an individual app could also be deleted from simulator in Xcode 7. This is not the case in Xcode 8. How can this be achieved? I have a forced touch trackpad, does it affect deleting the app from simulator?


How to delete an app from iOS Xcode Simulator?

I have been only recently working with Xcode 8 beta 4 but it has been working fine up until now. The list of simulators is not showing for any of my projects. I already tried Creating a new Scheme and it did not work. How do I fix this?

xcode8 list of simulators not showing

While I am try to run an app in the **iOS 10 simulator** using `xcode8` I get these alerts frequently. They randomly appear two at a time and it is not apparent what is triggering them.

Below is Image for Error I got. 

[![Error Screen shot.][1]][1]

I tried Following things. 

 - Clean &amp; Rebuild an app
 - Restart xcode &amp; Simulator
 - Clear Derived Data &amp; Rebuild application.

  [1]: http://i.stack.imgur.com/hauBO.png

Xcode 8 | iOS 10 simulator &quot;Error returned in reply: Connection invalid&quot;

I am following the tutorial on the official React Native website.

Using the following to build my project:

    react-native run-ios

I get the error:

    Found Xcode project TestProject.xcodeproj
    xcrun: error: unable to find utility &quot;instruments&quot;, not a developer   
    tool or in PATH

    Command failed: xcrun instruments -s
    xcrun: error: unable to find utility &quot;instruments&quot;, not a developer 
    tool or in PATH

Although, when I run the app from the .xcodeproj, everything works fine.

Any suggestions?

Error Running React Native App From Terminal (iOS)

Trying to run a build on simulator and I get this error:

&gt; The request to open &quot;com.companyname.appname&quot; failed.
&gt;
&gt; The request was denied by service delegate (SBMainWorkspace) for
&gt; reason: Security (&quot;Entitlement
&gt; &quot;com.apple.frontboard.debugapplications&quot; required to launch
&gt; applications for debugging&quot;).

This was not there when using the GM of `Xcode 8`, but started soon as I downloaded it again form the mac app store.
Google is no help neither is the Apple developers forum.

Any help or suggestions?

xcode 8 error denied by service delegate (SBMainWorkspace)

I am facing this error, i am done with research on that.

I conclude the result, i need one file for device support 10.2(14C92)

Please share that file.

GoTo: 

 - Right click on Xcode 8 or Newer version of your Xcode, select &quot;Show
   Package Contents&quot;, &quot;Contents&quot;, &quot;Developer&quot;, &quot;Platforms&quot;,
   &quot;iPhoneOS.Platform&quot;, &quot;Device Support&quot;
 - Copy the **10.2(14C92)** folder (or above for later version).

I need that folder.

Thanks.

Model is running iOS 10.2 (14C92), which may not be supported by this version of Xcode

Apple announced a new Dark Mode for Xcode 10. I&#39;ve downloaded the beta but now I can&#39;t find any option to turn it on. I&#39;m currently on macOS 10.13 High Sierra.

[![enter image description here][1]][1]


  [1]: https://i.stack.imgur.com/jtJOQ.png

How to enable Dark Mode for Xcode

What is &#39;Multi-cursor editing&#39; in Xcode 10 editor. (more information about the same is mentioned in [release notes][1] but unable to understand.)

How exactly does it work?


  [1]: https://download.developer.apple.com/Documentation/Xcode_10_beta_Release_Notes/Xcode_10_Beta_Release_Notes.pdf

Multi-cursor editing in Xcode 10

    error: Unable to resolve build file: XCBCore.BuildFile (missingTargetProductReference(&quot;3bf83096e50de72a94699e9afc1133ebe3512682230d04680075c283a974e273&quot;)) (in target &#39;MyTarget&#39;)

Xcode 10 is giving this error immediately when trying to build our project. It&#39;s not immediately clear what is causing it. 

How can I resolve it?

Content Type	Original Author	Original Content on Stackoverflow
Question	Andy	View Question on Stackoverflow
Solution 1 - Ios	Hasya	View Answer on Stackoverflow

Archive button grayed out in Xcode

Ios Problem Overview

Ios Solutions

Solution 1 - Ios

ESRI : Failed to parse source map

What is the difference between ZoneOffset.UTC and ZoneId.of("UTC")?

Attributions