fix: resolve "measureLayout must be called with a ref to a native component" warning#620
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…e handles Calling ref.measureLayout() directly on composite (JS) component refs triggers a React Native warning: "ref.measureLayout must be called with a ref to a native component." This happens because containerRef and viewRef point to wrapped/Animated components, not host views. Fix both call sites to use UIManager.measureLayout() with findNodeHandle() to first resolve refs to their underlying native node handles before measuring. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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Problem
When using
NestableDraggableFlatListinside aNestableScrollContainer, React Native logs the following warning on every layout:Warning: ref.measureLayout must be called with a ref to a native component.This fires from two places:
NestableDraggableFlatList.tsx..containerRef.current.measureLayout(...)CellRendererComponent.tsx..viewNode.measureLayout(...)Both call
.measureLayout()directly on composite (JS/Animated) component refs, not on host (native) views. React Native requires the caller ref to be a native component.Fix
Replace both call sites with
UIManager.measureLayout(), which accepts native node handles (numbers) resolved viafindNodeHandle(). This is the correct low-level API for measuring across arbitrary component trees.Note:
UIManager.measureLayouthas a different argument order thanref.measureLayout—(node, relativeToNode, onFail, onSuccess).Tested on