UPDATE There’s actually a very convenient way to silence certain logs for a specific simulator: xcrun simctl spawn booted log config –subsystem com.apple.network –category boringssl –mode level:off It is also recommended to silence other common non-important logs as well: xcrun simctl spawn booted log config –subsystem com.apple.CoreBluetooth –mode level:off xcrun simctl spawn booted log config … Read more
I figured it out but Apple didn’t make it so obvious. The callback function from the delegate AVCaptureMetadataOutputObjectsDelegate has been renamed and the parameter names are different! So, replace func captureOutput(_ captureOutput: AVCaptureOutput!, didOutputMetadataObjects metadataObjects: [Any]!, from connection: AVCaptureConnection!) to func metadataOutput(_ output: AVCaptureMetadataOutput, didOutput metadataObjects: [AVMetadataObject], from connection: AVCaptureConnection) My view controller is now … Read more
I think this ‘bug’ may be a Swift 4 “feature”, specifically something they call “Exclusive access to Memory”. Check out this WWDC video. Around the 50-minute mark, the long-haired speaker explains it. https://developer.apple.com/videos/play/wwdc2017/402/?time=233 You could try turning the thread sanitizer off in your scheme settings if you’re happy to ignore it. However, the debugger is … Read more
The only change done to UINavigationBar API for iOS 11 is prefersLargeTitles. Documentation here: https://developer.apple.com/documentation/uikit/uinavigationbar/ You can do it to your own apps with one small change: check “Prefers Large Titles” for your navigation bar in IB, or if you prefer to do it in code using: navigationController?.navigationBar.prefersLargeTitles = true If you need to change … Read more
Ashish and Ghulam’s answers were great but it still kinda bugged me that things had changed and I couldn’t jump to definition as before. Then I found this… Xcode9Beta2-Preferences->Navigation->Command-click on Code:->Jump To Definition:
Update: Solution also tested and working in Swift 5 and Xcode 11. Original: I would like to add that if you are using Carthage to compile a module in Swift 3.2 you should go to a terminal and run: sudo xcode-select –switch /Applications/Xcode-beta.app/Contents/Developer To use the Xcode 9 command line tools, then you can run: … Read more
Reason The problem appears because from ios 11 UIBarButtonItem uses autolayout instead of dealing with frames. Solution You should add width constraint for this image-button if you use Xcode 9. button.widthAnchor.constraint(equalToConstant: 32.0).isActive = true button.heightAnchor.constraint(equalToConstant: 32.0).isActive = true PS button is not UIBarButtonItem, it is UIButton inside UIBarButtonItem. You should set constraint not for UIBarButtonItem, … Read more
UIColor(named: “myColor”) Source: WWDC 2017 Session 237 —— What’s New in MapKit Caveat: Your project’s Deployment Target needs to be set to iOS 11.0.
Press ⌘2 to open the new Source Control Navigator. Right-click on the master icon. To switch to a different branch Right-click on a non-current branch Choose Checkout… Press ↩ or click on the Checkout button.
The block declaration with empty parenthesis: void (^)() has the same semantics as a function pointer with empty parenthesis: void (*)() It does not mean that there are no arguments. It means the arguments are not specified, therefore it opens the way to bugs since you can call it in the following ways: void (^block)() … Read more