# 🎤 General Discussion **URL:** https://forums.kodeco.com/c/general/16.md?page=29 [Latest](https://forums.kodeco.com/latest.md) · [Categories](https://forums.kodeco.com/categories.md) · [Tags](https://forums.kodeco.com/tags.md) **Page:** 30 --- ## [Not Connecting: App Store on Simulator](https://forums.kodeco.com/t/not-connecting-app-store-on-simulator/102362)
**Author:** [@lganti](https://forums.kodeco.com/u/lganti)\ **Replies:** 2\ **Last updated:** [April 7, 2020, 6:37am UTC](https://forums.kodeco.com/t/not-connecting-app-store-on-simulator/102362 "2020-04-07T06:37:16Z")
I am trying to add a sandbox account and I repeatedly keep seeing this when I try to enable iTunes & App Store --- ## [CADisplayLink + Data from server](https://forums.kodeco.com/t/cadisplaylink-data-from-server/103039)
**Author:** [@lganti](https://forums.kodeco.com/u/lganti)\ **Replies:** 2\ **Last updated:** [April 7, 2020, 6:36am UTC](https://forums.kodeco.com/t/cadisplaylink-data-from-server/103039 "2020-04-07T06:36:33Z")
The value of a variable being used for UI changes on main thread is changed mid use due to a server call . . . https://gist.github.com/lahariganti/9dfa2e6485f22397ac9b2fd0fa47ef74 Line 26 in the gist is the problem, I … --- ## [Nestoria api not working for the react native app example](https://forums.kodeco.com/t/nestoria-api-not-working-for-the-react-native-app-example/103435)
**Author:** [@watthell234](https://forums.kodeco.com/u/watthell234)\ **Replies:** 2\ **Last updated:** [April 6, 2020, 3:03pm UTC](https://forums.kodeco.com/t/nestoria-api-not-working-for-the-react-native-app-example/103435 "2020-04-06T15:03:36Z")
Anyone else having issues with the react native tutorial because of the nestoria api? --- ## [Help with Collectionview Compositional layout](https://forums.kodeco.com/t/help-with-collectionview-compositional-layout/102784)
**Author:** [@cnbciosdevs](https://forums.kodeco.com/u/cnbciosdevs)\ **Replies:** 2\ **Last updated:** [April 6, 2020, 12:39pm UTC](https://forums.kodeco.com/t/help-with-collectionview-compositional-layout/102784 "2020-04-06T12:39:00Z")
Hi All, I’m re-writing some of my collection view flow layouts using compositional layouts, and I’m having a bit of trouble with achieving what I want. Basically, I have a 2 column layout, consisting of self-sizing cell… --- ## [Https://www.raywenderlich.com/4001741-swiftui/lessons/16](https://forums.kodeco.com/t/https-www-raywenderlich-com-4001741-swiftui-lessons-16/102435)
**Author:** [@webhunter](https://forums.kodeco.com/u/webhunter)\ **Replies:** 2\ **Last updated:** [April 6, 2020, 9:03am UTC](https://forums.kodeco.com/t/https-www-raywenderlich-com-4001741-swiftui-lessons-16/102435 "2020-04-06T09:03:44Z")
https://www.raywenderlich.com/4001741-swiftui/lessons/16 I have a problem with the Picker inside of NavigationView: I can’t replicate the behavior @4’45" The picker works only the first time: selected the item, the nav… --- ## [Preventing Man-in-the-Middle Attacks in iOS with SSL Pinning](https://forums.kodeco.com/t/preventing-man-in-the-middle-attacks-in-ios-with-ssl-pinning/101941)
**Author:** [@prenez01](https://forums.kodeco.com/u/prenez01)\ **Replies:** 1\ **Last updated:** [April 5, 2020, 10:05pm UTC](https://forums.kodeco.com/t/preventing-man-in-the-middle-attacks-in-ios-with-ssl-pinning/101941 "2020-04-05T22:05:32Z")
Charles doesn’t behave as described in the tutorial. Instead of an error condition, I get a successful connect. I built this up from the Starter, but then also tried with the Final, same result. @lorenzoboaro This is ch… --- ## [Bullseye Info button only working first time it is pressed](https://forums.kodeco.com/t/bullseye-info-button-only-working-first-time-it-is-pressed/100502)
**Author:** [@axeman](https://forums.kodeco.com/u/axeman)\ **Replies:** 4\ **Last updated:** [April 5, 2020, 2:40am UTC](https://forums.kodeco.com/t/bullseye-info-button-only-working-first-time-it-is-pressed/100502 "2020-04-05T02:40:35Z")
Bull’s Eye Info button only opens the About Window on it’s first click, subsequent presses do nothing. --- ## [\[Request tutorial\]: Validation receipt local (in keychain) or remote](https://forums.kodeco.com/t/request-tutorial-validation-receipt-local-in-keychain-or-remote/101253)
**Author:** [@neo999](https://forums.kodeco.com/u/neo999)\ **Replies:** 1\ **Last updated:** [April 5, 2020, 1:03am UTC](https://forums.kodeco.com/t/request-tutorial-validation-receipt-local-in-keychain-or-remote/101253 "2020-04-05T01:03:27Z")
Hi, I’ve been going crazy with this topic for days. There are 100 thousand different things. (which only create confusion) Storekit Pod for the keychain Pod for in-app validation (I don’t need to validate in-app purcha… --- ## [More Practice with Swift](https://forums.kodeco.com/t/more-practice-with-swift/104059)
**Author:** [@mitchellrobben](https://forums.kodeco.com/u/mitchellrobben)\ **Replies:** 1\ **Last updated:** [April 5, 2020, 12:28am UTC](https://forums.kodeco.com/t/more-practice-with-swift/104059 "2020-04-05T00:28:00Z")
Hi all, Can someone recommend a good workbook / website that has Swift practice exercises (like the challenges in the IOS & Swift path). I would like to get better at writing / creating some of the fundamental code I ha… --- ## [Custom UICollectionView pinterest layout question](https://forums.kodeco.com/t/custom-uicollectionview-pinterest-layout-question/90072)
**Author:** [@akashlal](https://forums.kodeco.com/u/akashlal)\ **Replies:** 8\ **Last updated:** [April 4, 2020, 11:39pm UTC](https://forums.kodeco.com/t/custom-uicollectionview-pinterest-layout-question/90072 "2020-04-04T23:39:45Z")
I made an iOS Application which shows 10 photos for a search result at a time, using unsplash.com’s API and lay it out in a pinterest like view - https://www.raywenderlich.com/4829472-uicollectionview-custom-layout-tutor… --- ## [Sprite disappears from canvas after restarting iPhone device](https://forums.kodeco.com/t/sprite-disappears-from-canvas-after-restarting-iphone-device/100692)
**Author:** [@cparker101](https://forums.kodeco.com/u/cparker101)\ **Replies:** 2\ **Last updated:** [April 4, 2020, 11:34pm UTC](https://forums.kodeco.com/t/sprite-disappears-from-canvas-after-restarting-iphone-device/100692 "2020-04-04T23:34:37Z")
For the GameLoop chapter of Beginning SpriteKit, the sprite appears on the canvas at the start as expected. If I restart the app in the simulator, it always appears there. However, once I install the app on an actual d… --- ## [Is there any objective-c content left?](https://forums.kodeco.com/t/is-there-any-objective-c-content-left/100717)
**Author:** [@elliotrodriguez](https://forums.kodeco.com/u/elliotrodriguez)\ **Replies:** 1\ **Last updated:** [April 4, 2020, 11:33pm UTC](https://forums.kodeco.com/t/is-there-any-objective-c-content-left/100717 "2020-04-04T23:33:57Z")
I am considering purchasing a subscription and wondering if the advanced/pro content contains any objective-c content. I am working in a react native app that requires a view be built with an SDK that is built in object… --- ## [Non complete sample source code](https://forums.kodeco.com/t/non-complete-sample-source-code/99975)
**Author:** [@lusp](https://forums.kodeco.com/u/lusp)\ **Replies:** 3\ **Last updated:** [April 3, 2020, 3:04pm UTC](https://forums.kodeco.com/t/non-complete-sample-source-code/99975 "2020-04-03T15:04:44Z")
I downloaded the sample source code of https://www.raywenderlich.com/6620276-sqlite-with-swift-tutorial-getting-started But the in the folder “end” the code of the sample were missing. Did I look wrong? Thanks for any… --- ## [Building a Museum App with ARKit 2 image recognised i play gif on top of it, After that it leads to my app UI freeze issue. i](https://forums.kodeco.com/t/building-a-museum-app-with-arkit-2-image-recognised-i-play-gif-on-top-of-it-after-that-it-leads-to-my-app-ui-freeze-issue-i/100537)
**Author:** [@iosyogi41](https://forums.kodeco.com/u/iosyogi41)\ **Replies:** 1\ **Last updated:** [April 3, 2020, 6:22am UTC](https://forums.kodeco.com/t/building-a-museum-app-with-arkit-2-image-recognised-i-play-gif-on-top-of-it-after-that-it-leads-to-my-app-ui-freeze-issue-i/100537 "2020-04-03T06:22:53Z")
I followed this tutorial to build AR app which recognises image and on top of it plays gif. https://www.raywenderlich.com/6957-building-a-museum-app-with-arkit-2 I’m successfully able to play gif but once if i go back … --- ## [SwiftUI don't update scrollview content via API](https://forums.kodeco.com/t/swiftui-dont-update-scrollview-content-via-api/88875)
**Author:** [@selcukyucel](https://forums.kodeco.com/u/selcukyucel)\ **Replies:** 7\ **Last updated:** [April 3, 2020, 5:48am UTC](https://forums.kodeco.com/t/swiftui-dont-update-scrollview-content-via-api/88875 "2020-04-03T05:48:40Z")
Hi, I have been working one thing for whole day, and figured out something odd. I am fetching my data via API. then wanna show in a horizontal scroll view. Using ObservableObject and ObservedObject. Problem: View does… --- ## [Read core data. The basic simple code](https://forums.kodeco.com/t/read-core-data-the-basic-simple-code/100274)
**Author:** [@narcis](https://forums.kodeco.com/u/narcis)\ **Replies:** 1\ **Last updated:** [April 3, 2020, 5:12am UTC](https://forums.kodeco.com/t/read-core-data-the-basic-simple-code/100274 "2020-04-03T05:12:11Z")
I have created some data from UITextField name and password. It works well. I have problems to make the same with Read. For instance select from Core Data the Attribute name of John and Read (print) its password. I just … --- ## [SwiftUI SF Symbols Button in NavigationBar not working!](https://forums.kodeco.com/t/swiftui-sf-symbols-button-in-navigationbar-not-working/99811)
**Author:** [@t11s](https://forums.kodeco.com/u/t11s)\ **Replies:** 2\ **Last updated:** [April 2, 2020, 4:15am UTC](https://forums.kodeco.com/t/swiftui-sf-symbols-button-in-navigationbar-not-working/99811 "2020-04-02T04:15:58Z")
I’m trying to use a button that is a SF Symbol Image as the trailing navigation bar item, however, when clicking the button on a REAL IPHONE, it’s very very unreliable and I end up clicking it 30+ to only get 1 click reg… --- ## [Books Should be Catered to an Audience based on Experience](https://forums.kodeco.com/t/books-should-be-catered-to-an-audience-based-on-experience/100015)
**Author:** [@psyaryu](https://forums.kodeco.com/u/psyaryu)\ **Replies:** 4\ **Last updated:** [April 2, 2020, 12:20am UTC](https://forums.kodeco.com/t/books-should-be-catered-to-an-audience-based-on-experience/100015 "2020-04-02T00:20:12Z")
I have a proposition for book writers of wenderlich. The books released generally focus on 1 topic which given there is only so much you can write in a book before wenderlich is unhappy or your reader loses motivation t… --- ## [Container Help Needed](https://forums.kodeco.com/t/container-help-needed/103500)
**Author:** [@joelcyyz](https://forums.kodeco.com/u/joelcyyz)\ **Replies:** 5\ **Last updated:** [April 1, 2020, 10:55pm UTC](https://forums.kodeco.com/t/container-help-needed/103500 "2020-04-01T22:55:54Z")
I am trying to learn the Contacts Framework and would very much appreciate someone explaining the following: What a container is; and What a container id is and how they work. Specifically, in the following code… --- ## [Working with Fragments, Part 4, 10 Episodes](https://forums.kodeco.com/t/working-with-fragments-part-4-10-episodes/96960)
**Author:** [@bury](https://forums.kodeco.com/u/bury)\ **Replies:** 2\ **Last updated:** [April 1, 2020, 2:41pm UTC](https://forums.kodeco.com/t/working-with-fragments-part-4-10-episodes/96960 "2020-04-01T14:41:06Z")
content\_main.xml xlarge - @layout/activity\_list is red didnt include "Materials to 32 and 33 lessons i need help. have crash on Tablet --- ## [I need help with quering cloudkit](https://forums.kodeco.com/t/i-need-help-with-quering-cloudkit/101256)
**Author:** [@nixxe](https://forums.kodeco.com/u/nixxe)\ **Replies:** 3\ **Last updated:** [April 1, 2020, 7:41am UTC](https://forums.kodeco.com/t/i-need-help-with-quering-cloudkit/101256 "2020-04-01T07:41:00Z")
I am running four queries on cloudkit, one after the other. Sometimes however, I only get 3 correct records. I am doing something wrong, but I don’t see it. All help is appreciated. // THis is the function which incl… --- ## [How to use Neo4j with Server Side Swift (Vapor/Fluent/Theo)](https://forums.kodeco.com/t/how-to-use-neo4j-with-server-side-swift-vapor-fluent-theo/94262)
**Author:** [@rob256](https://forums.kodeco.com/u/rob256)\ **Replies:** 8\ **Last updated:** [March 31, 2020, 1:27pm UTC](https://forums.kodeco.com/t/how-to-use-neo4j-with-server-side-swift-vapor-fluent-theo/94262 "2020-03-31T13:27:26Z")
I am interested in developing an application using the Neo4j graph database but I can’t find much documentation on how to leverage it with Vapor, Fluent, Theo etc… Does anyone no where I might find additional documentati… --- ## [MVVM Clean Architecture with network Calls](https://forums.kodeco.com/t/mvvm-clean-architecture-with-network-calls/97938)
**Author:** [@jayesh\_hifx](https://forums.kodeco.com/u/jayesh_hifx)\ **Replies:** 1\ **Last updated:** [March 31, 2020, 3:19am UTC](https://forums.kodeco.com/t/mvvm-clean-architecture-with-network-calls/97938 "2020-03-31T03:19:49Z")
Hi, I have seen your MVVM with clean architecture in your blog and its quite good to read and understand. I have download the source code and run it. Everything was fine But I just need additional thing like, the projec… --- ## [Place multiple scn objects in touches began func](https://forums.kodeco.com/t/place-multiple-scn-objects-in-touches-began-func/97301)
**Author:** [@timswift](https://forums.kodeco.com/u/timswift)\ **Replies:** 1\ **Last updated:** [March 31, 2020, 1:43am UTC](https://forums.kodeco.com/t/place-multiple-scn-objects-in-touches-began-func/97301 "2020-03-31T01:43:28Z")
My swift code below uses func touchesBegan to place a scn object in the ARKit view. The problem is that it is only placing the object one time. I would like to create the code in a way that the user can select any area t… --- ## [Use fileOutput to save video to photo gallery](https://forums.kodeco.com/t/use-fileoutput-to-save-video-to-photo-gallery/96802)
**Author:** [@timswift](https://forums.kodeco.com/u/timswift)\ **Replies:** 1\ **Last updated:** [March 30, 2020, 6:40pm UTC](https://forums.kodeco.com/t/use-fileoutput-to-save-video-to-photo-gallery/96802 "2020-03-30T18:40:26Z")
My swift code below goal is to record a 5 second video automatically and save it to the photo gallery when the code is built. In func fileOut I assume that is where you save the video to the photo gallery. I dont know wh… --- ## [How to use Particles and physicsbody?](https://forums.kodeco.com/t/how-to-use-particles-and-physicsbody/103259)
**Author:** [@philport](https://forums.kodeco.com/u/philport)\ **Replies:** 2\ **Last updated:** [March 30, 2020, 11:47am UTC](https://forums.kodeco.com/t/how-to-use-particles-and-physicsbody/103259 "2020-03-30T11:47:09Z")
Hi, I have created an asteroid field with a particles.sks and I can’t find how to make each of these asteroid particle have actual physicsbodies to make them bounce one against the other. Is it possible to do that? An… --- ## [Assign jpegData to Binary Core Data](https://forums.kodeco.com/t/assign-jpegdata-to-binary-core-data/96034)
**Author:** [@timswift](https://forums.kodeco.com/u/timswift)\ **Replies:** 2\ **Last updated:** [March 29, 2020, 9:29am UTC](https://forums.kodeco.com/t/assign-jpegdata-to-binary-core-data/96034 "2020-03-29T09:29:32Z")
My swift code below is trying to save a image litteral to binary core data pic. A image litteral is a image located locally within the xcode project. I am getting a complie error at object.pic = newUser stating Cannot as… --- ## [Launchscreen storyboard mandate](https://forums.kodeco.com/t/launchscreen-storyboard-mandate/93244)
**Author:** [@adithyaram](https://forums.kodeco.com/u/adithyaram)\ **Replies:** 2\ **Last updated:** [March 28, 2020, 8:33pm UTC](https://forums.kodeco.com/t/launchscreen-storyboard-mandate/93244 "2020-03-28T20:33:35Z")
Apple has made it mandatory to use launch screen storyboards by April 2020. If not done so, the app store submissions would get rejected. This is not a big deal. We can create a storyboard and use the same as the launch… --- ## [Is SwiftUI ready for production level apps](https://forums.kodeco.com/t/is-swiftui-ready-for-production-level-apps/102803)
**Author:** [@psuranas](https://forums.kodeco.com/u/psuranas)\ **Replies:** 1\ **Last updated:** [March 28, 2020, 8:23pm UTC](https://forums.kodeco.com/t/is-swiftui-ready-for-production-level-apps/102803 "2020-03-28T20:23:36Z")
I finished the first and second iOS and SwiftUI app tutorials, and was wondering if we can start building production level apps in SwiftUI. --- ## [Does your app need a privacy policy?](https://forums.kodeco.com/t/does-your-app-need-a-privacy-policy/93911)
**Author:** [@sebastian\_zimmeck](https://forums.kodeco.com/u/sebastian_zimmeck)\ **Replies:** 2\ **Last updated:** [March 28, 2020, 8:08pm UTC](https://forums.kodeco.com/t/does-your-app-need-a-privacy-policy/93911 "2020-03-28T20:08:01Z")
Does your app need a privacy policy? Generate it directly from your app’s code and earn a $5 Amazon gift card. We are computer science researchers at Wesleyan University. We developed PrivacyFlash Pro, an automatic g… [Previous page](https://forums.kodeco.com/c/general/16.md?page=28) [Next page](https://forums.kodeco.com/c/general/16.md?page=30)