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android端native代码能监控到js页面渲染完成吗 #1

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qiandongw opened this issue Mar 6, 2018 · 2 comments
Open

android端native代码能监控到js页面渲染完成吗 #1

qiandongw opened this issue Mar 6, 2018 · 2 comments

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@qiandongw
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看了渲染机制，有个问题想请教一下，native端能监控到js页面渲染完成吗？ReactRootView中onAttachedToReactInstance只是rootView和ReactContext之间绑定了关系，这时候RN页面不一定渲染完成了吧。谢谢
@sucese
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sucese commented Mar 6, 2018

RN的渲染分为两部分：1. JS的解析与渲染。2. 将JS Widget转换为Android Native WIdget。第二步完成
以后js页面才算真正的展示到用户面前，可以用ViewTreeObserver.OnDrawListener监控。

@qiandongw
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ViewTreeObserver.OnDrawListener 这个方法的回调 native试图还没有画完吧

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@qiandongw @sucese