xcode

问题 I was building an iOS app for my hospital using collection view. However, I need to use multiple sections for the specialist clinic depends on the purpose. I already completed the code if it's just for 1 section. when I try to make it 2 sections, it always returns a nil value. please check my code below public func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell { let cell = collectionView.dequeueReusableCell(withReuseIdentifier:

问题 After upgrading Xcode I can not run the my iPhone on the Xcode. My Xcode waiting and waiting finally give a error like that and it stuck. Even though I unplugged the USB cable and delete derived data nothing changed. I faced same problem with upgrade Xcode to 12.0 12.1 and 12.2 Is there any thing missing? What should I do to solve this issue? iPhone is not available. Please reconnect the device. 回答1: Go to this Github repo for 14.2 click here to download the iOS 14.2 file or for 14.3 here 14

问题 In my Xcode 12.0 using Swift 5 and Catalina 10.15.5: When I tick Mac as deployable target (Apple Project Catalyst), and click Runs, it gives me an error showing: 'AppDelegate' is annotated with @main and must provide a main static function of type () -> Void or () throws -> Void. Can't find anything on Internet... I have checked my codes and nothing's wrong and it can be run on iOS devices and simulators. Debug log is empty (duhh...) Anyone facing this issue? 回答1: Change @main to

问题 In my Xcode 12.0 using Swift 5 and Catalina 10.15.5: When I tick Mac as deployable target (Apple Project Catalyst), and click Runs, it gives me an error showing: 'AppDelegate' is annotated with @main and must provide a main static function of type () -> Void or () throws -> Void. Can't find anything on Internet... I have checked my codes and nothing's wrong and it can be run on iOS devices and simulators. Debug log is empty (duhh...) Anyone facing this issue? 回答1: Change @main to

问题 Some times Xcode can not determine the module parameter in the Bundle. Type 'Bundle' has no member 'module' My investigations show that SPM generates an extension on the module (some times) for this property automatically in a file called resource_bundle_accessor like: import class Foundation.Bundle private class BundleFinder {} extension Foundation.Bundle { /// Returns the resource bundle associated with the current Swift module. static var module: Bundle = { let bundleName = "ABUIKit

问题 Some times Xcode can not determine the module parameter in the Bundle. Type 'Bundle' has no member 'module' My investigations show that SPM generates an extension on the module (some times) for this property automatically in a file called resource_bundle_accessor like: import class Foundation.Bundle private class BundleFinder {} extension Foundation.Bundle { /// Returns the resource bundle associated with the current Swift module. static var module: Bundle = { let bundleName = "ABUIKit

问题 Some times Xcode can not determine the module parameter in the Bundle. Type 'Bundle' has no member 'module' My investigations show that SPM generates an extension on the module (some times) for this property automatically in a file called resource_bundle_accessor like: import class Foundation.Bundle private class BundleFinder {} extension Foundation.Bundle { /// Returns the resource bundle associated with the current Swift module. static var module: Bundle = { let bundleName = "ABUIKit

问题 [TraitCollection] Class CKBrowserSwitcherViewController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API. I am getting this message in debugger since I am using MFMessageComposeViewController, MFMailComposeViewController, CNContactPickerViewController in my application, and presenting them with navigation controller. My navigation controller is customized on each view controller files individually. First I

问题 [TraitCollection] Class CKBrowserSwitcherViewController overrides the -traitCollection getter, which is not supported. If you're trying to override traits, you must use the appropriate API. I am getting this message in debugger since I am using MFMessageComposeViewController, MFMailComposeViewController, CNContactPickerViewController in my application, and presenting them with navigation controller. My navigation controller is customized on each view controller files individually. First I