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Trello Apple Watch App Development

1 post · Apr 2015

What this trail covers

This post details the initial development of Trello for Apple Watch, focusing on leveraging ReactiveCocoa for UI updates and state management, managing context objects for navigation, and optimizing performance for the constrained environment of the Apple Watch. It highlights strategies for image compression, efficient data updates, and the use of groups for complex layouts.

All Atlassian trails
  1. Like Trello, but on a watchThis post introduces custom Objective-C categories for WKInterfaceController to expose RACSignals for activation and deactivation states, enabling reactive UI updates based on controller lifecycle events. It also details the use of RACCommand for managing task completion and auto-dismissal of child interface controllers. The post discusses context object patterns for navigation and the use of nested WKInterfaceGroups for complex UI layouts. Performance optimizations include compressing images to JPEG with quality 0 and using `distinctUntilChanged` with ReactiveCocoa to reduce unnecessary UI updates.