Wonder
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Wonder
https://www.cnblogs.com/padding1015/p/9717845.html 结合echarts-wordcloud的源码和这篇文章分析，找到了原因是drawImage的时机不对
找到这个解决方案，目前可行https://stackoverflow.com/questions/33426760/react-native-listview-not-updating-on-data-change/