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Layout Inspector Magic: How to Understand Your Jetpack Compose UI Like a Pro! 🕵️♂️ 📐
3 min readAug 20, 2024
Introduction
The Layout Inspector is a powerful tool that allows you to inspect Compose layouts within a running app, whether it’s on an emulator or a physical device. By using the Layout Inspector, you can gain insights into how often composables are recomposed or skipped, which is crucial for identifying potential issues in your app. Whether you’re a seasoned developer or just getting started with Compose, this tool is your trusty sidekick 🦸💥🦸🏻♀️👨🎤
for optimizing UI performance.
Why Use the Layout Inspector?
- Recomposition Insights: Ever wondered why your UI feels sluggish? The Layout Inspector shows you when composables in your layout hierarchy recompose or get skipped as you interact with your app. Excessive recompositions can lead to poor performance, while components that don’t recompose when expected can cause unexpected hiccups. With the Layout Inspector, you’ll pinpoint these bottlenecks and fine-tune your UI. In the screenshot above
HomeScreen+ShowHomeScreenComposables are recomposing, although not at an alarming rate alarming rate I am still not the biggest fan of this. So I need to do a deep-dive into the code on why this recomposition is happening.
