node_modules/react-native/Libraries/Lists/SectionList.js,代码格式化后大概在187行的位置，修改如下 class SectionList<SectionT: SectionBase<any>> extends React.PureComponent<DefaultProps, Props<SectionT>, void> { props: Props<SectionT>; static defaultProps: DefaultProps = defaultProps; render() { const List = this.props.legacyImplementation ? MetroListView : VirtualizedSectionList; return <List ref={this._captureRef} {...this.props} />; } _captureRef = (ref) => { this._listRef = ref; }; scrollToIndex = (params: { animated?: ?boolean, index: number, viewPosition?: number }) => { this._listRef.scrollToIndex(params); } }
2-:VirtualizedSectionList
路径在node_modules/react-native/Libraries/Lists/VirtualizedSectionList.js，大概253行处修改如下：