App 启动优化 | Ask WWDC

To optimize app launch times, you can utilize several tools and techniques discussed in the WWDC sessions. Here are some key points:

Xcode Organizer: The Organizer in Xcode provides diagnostics for slow app launches. It shows the slowest code path signatures, helping you prioritize fixes that have the largest impact on performance. This feature is part of the updates in Xcode 16, which also includes diagnostics for excessive disk writes and main thread hangs. You can find more about this in the session What's new in Xcode 16.
Instruments and Flame Graphs: Instruments in Xcode is a powerful tool for diagnosing performance issues. The Time Profiler instrument can visualize CPU usage and help identify long hangs during app launch. The new flame graph feature provides a high-level overview of trace execution, which can be useful for narrowing down performance bottlenecks. This is also covered in the session What's new in Xcode 16.
App Intents and Spotlight: While not directly related to launch optimization, integrating App Intents with Spotlight can improve user experience by allowing quick access to app features without needing to fully launch the app. This can be particularly useful for frequently accessed features. More details can be found in the session Bring your app’s core features to users with App Intents.

By leveraging these tools and techniques, you can effectively diagnose and optimize your app's launch performance.