如何从标签中获取 ReactElement? [英] How can I get a ReactElement from a tag?

问题描述

PanResponder 方法被传递一个 ResponderSyntheticEvent，它的 nativeEvent.target 是一个 React 标签(它只是一个 Number代码>).这与 findNodeHandle 返回的标记相同.

The PanResponder methods are passed a ResponderSyntheticEvent whose nativeEvent.target is a React tag (which is just a Number). This is the same tag that is returned by findNodeHandle.

有没有办法从 React 标签中获取 ReactElement ?

Is there a way to get the ReactElement from the React tag?

我可以使用 ReactNativeTagHandles.tagToRootNodeID[tag] 来获取根节点 ID".现在我怎样才能从中获得 ReactElement ?

I can use ReactNativeTagHandles.tagToRootNodeID[tag] to get the "root node ID". Now how can I get a ReactElement from that?

推荐答案

var ReactNativeComponentTree = require('ReactNativeComponentTree');

var reactInstance = ReactNativeComponentTree.getInstanceFromNode(reactTag);

这仅在 facebook/react >= 15.0.2 版本中可用强>

This is only available in versions of facebook/react >= 15.0.2

您可以看到 ReactNativeComponentTree 定义的 这里.

You can see ReactNativeComponentTree defined here.

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