道友，懂中文的是吧？不能为dropdownStyle指定高度，指定后报错，dropdownStyle
dropdownStyle={StyleSheet.flatten([styles.dropdownStyle, {height:64}])}
(197行)这一行代码写错了：

let dropdownHeight = (this.props.dropdownStyle && StyleSheet.flatten(this.props.dropdownStyle.height)) || StyleSheet.flatten(styles.dropdown).height; // 应该是: .height) => ).height let dropdownHeight = (this.props.dropdownStyle && StyleSheet.flatten(this.props.dropdownStyle).height) || StyleSheet.flatten(styles.dropdown).height;