神坑react native之Cannot Add a child that doesn't have a YogaNode to a parent with out a measure function
在react native最新版 0.50，遍历数据时在组件标签中插入数据，写法大致如下：
...<View style={[styles.flitem,{}]}>{item.key}</View>...
会报错：
Cannot Add a child that doesn't have a YogaNode to a parent with out a measure function
react native的一贯作风，凡是升级，必定整点幺蛾子（但升级也别太频繁了好不好~~~手动哭脸）
react native在国内刚火起来，没那么多资料可以查，百度就别指望了。搭梯子去谷歌，搜到了这里:https://github.com/facebook/react-native/issues/13243，里面网友parthgandhi7说的靠谱。解决方法是将变量放到Text组件中：
...<View style={[styles.flitem,{}]}><Text>{item.key}</Text></View>...
