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相关 issue #251 #428 #435
大概原因是 RN 会使用 setBounds 设置控件宽高 https://github.com/facebook/react-native/blob/master/React/Views/UIView+React.m#L200
然后高德地图的 setBounds 可能被重写过了导致在动画过程中创建的 MapView 宽高会随机超出
解决方法是给 MapView 包一层 UIView 就好了
具体深入的原因我也不是很清楚,因为我是开发 Android 的...