Recording Blood Pressure Data in HealthKit
We're currently in the process of expanding the capabilities of one our Apple Watch apps, HealthFace. One of the challenges we faced was figuring out how »
Accessing Activity Rings Data from HealthKit
In the most recent updates to Streaks and HealthFace, we've added the ability to see your current Activity Rings data. Although on iOS/watchOS the activity »
How to Process Today Extension Data In Real-Time
In the next version of Streaks, we are adding a "Today Extension" (also known as a widget) so users can mark tasks as done without even »
Working With Hex Colors in Swift 3
One of the best features of Swift is how easy it is to create extensions to existing classes. For example, to extend the functionality of UIColor »
Making Your App Searchable With CoreSpotlight in iOS 9
When you're on the Springboard screen in iOS, you can swipe down or left to search your device. As of iOS 9, it's possible for developers »
Formatting a Duration with NSDateComponentsFormatter
Recently I have been adding extra translations to Streaks Workout, which means ensuring that in addition to everything being translated for each language, dates and numbers »
Swift Extension to Add Two Colours Together
The following extension makes it really simple to blend two colours together into a non-transparent colour. For example, if you have a red colour (UIColor.redColor( »
Accessing Pedometer Data in watchOS 2
One of the features that makes the Apple Watch a compelling fitness-tracking device is the fact that is has a built-in pedometer. This means it tracks »
Automatically Generating Warnings for TODOs in Xcode
When using Objective-C in Xcode, it is possible to generate a compile time warning by using the #warning preprocessor directive in your code. This can be »
Recording Workouts in HealthKit
One of the types of data that can be stored in the Apple Health app (or HealthKit, as the developer framework is known), is workout data. »