Project 33: What's that Whistle?

Written by Paul Hudson    @twostraws

Description: Build a crowd-sourced song recognition app using Apple's free platform as a service: CloudKit.

• Setting up

• Recording from the microphone with AVAudioRecorder

• Animating UIStackView subview layout

• Writing to iCloud with CloudKit: CKRecord and CKAsset

• A hands-on guide to the CloudKit dashboard

• Reading from iCloud with CloudKit: CKQueryOperation and NSPredicate

• Working with CloudKit records: CKRecord.Reference, fetch(withRecordID:), and save()

• Delivering notifications with CloudKit push messages: CKQuerySubscription

• Wrap up

Need help?

I put together answers for over 600 of the most frequently asked questions I received from readers into one place: the Swift 5 Knowledge Base. It answers basic and advanced questions, and provides lots of free code you can re-use however you please. If you hit problems, try searching there first.

If you're still having problems, you can post to the Hacking with Swift subreddit where you can expect an answer fairly quickly, or you can find me on Twitter where I'll do my best to help.

Project files

The project files for Hacking with Swift are all available on GitHub, where you can view them, fork them, or download them: click here for the GitHub repo.

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