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Learn how Android’s Rect.intersect() simplifies hit‑testing for UI and games. A step‑by‑step Kotlin example, performance trade‑offs, and when to switch to a custom collision system.
Learn how to reuse android.graphics.Rect for efficient hit‑testing and layout work, with a code example and pitfalls to avoid.
Use Flutter’s Rect class to build precise, high‑performance hit‑testing logic in custom widgets. Learn how to override RenderBox.hitTest, cache Rects, and validate the approach with a draggable square example.
android
kotlin
flutter