{"id":498,"date":"2023-02-25T14:16:31","date_gmt":"2023-02-25T06:16:31","guid":{"rendered":"https:\/\/www.appblog.cn\/?p=498"},"modified":"2023-04-29T20:49:19","modified_gmt":"2023-04-29T12:49:19","slug":"react-native-learning-listview-component","status":"publish","type":"post","link":"https:\/\/www.appblog.cn\/index.php\/2023\/02\/25\/react-native-learning-listview-component\/","title":{"rendered":"React Native\u5b66\u4e60\u4e4bListView\u7ec4\u4ef6"},"content":{"rendered":"<h2>ListView\u7ec4\u4ef6<\/h2>\n<ul>\n<li>Android \u539f\u751f ListView \u5b9e\u73b0\uff08MVC\u65b9\u5f0f\uff09\uff1a<code>ListView Adapter List<\/code>\u96c6\u5408\u6570\u636e<\/li>\n<li>iOS \u539f\u751f ListView \u5b9e\u73b0\uff1a<code>UITableView\uff08sectionId\u3001rowId\u3001rowData\uff09<\/code><\/li>\n<\/ul>\n<p><!-- more --><\/p>\n<p>ListView\u7ec4\u4ef6\u662fReact Native\u4e2d\u4e00\u4e2a\u6bd4\u8f83\u6838\u5fc3\u7684\u7ec4\u4ef6\uff0c\u7528\u9014\u975e\u5e38\u7684\u5e7f\u3002\u8be5\u7ec4\u4ef6\u8bbe\u8ba1\u7528\u6765\u9ad8\u6548\u7684\u5c55\u793a\u5782\u76f4\u6eda\u52a8\u7684\u6570\u636e\u5217\u8868\u3002<\/p>\n<p>ListView\u6700\u7b80\u5355\u7684API\u5c31\u662f\u521b\u5efa\u4e00\u4e2aListView.DataSource\u5bf9\u8c61\uff0c\u540c\u65f6\u7ed9\u8be5\u5bf9\u8c61\u4f20\u5165\u4e00\u4e2a\u7b80\u5355\u7684\u6570\u636e\u96c6\u5408\u3002\u5e76\u4e14\u4f7f\u7528\u6570\u636e\u6e90(data source)\u5b9e\u4f8b\u5316\u4e00\u4e2aListView\u7ec4\u4ef6\uff0c\u5b9a\u4e49\u4e00\u4e2arenderRow\u56de\u8c03\u65b9\u6cd5(\u8be5\u65b9\u6cd5\u7684\u53c2\u6570\u662f\u4e00\u4e2a\u6570\u7ec4)\uff0c\u8be5renderRow\u65b9\u6cd5\u4f1a\u8fd4\u56de\u4e00\u4e2a\u53ef\u6e32\u67d3\u7684\u7ec4\u4ef6(\u5373\u5217\u8868\u7684\u6bcf\u4e00\u884c\u7684item)\u3002<\/p>\n<p>\u7531\u4e8e\u5e73\u53f0\u5dee\u5f02\u6027\uff0cReact Native \u4e2d\u7684\u6eda\u52a8\u5217\u8868\u7ec4\u4ef6 ListView \u5e76\u6ca1\u6709\u76f4\u63a5\u6620\u5c04\u4e3a Android \u4e2d\u7684 ListView \u6216 iOS \u4e2d\u7684 UITableView\uff0c\u800c\u662f\u5728ScrollView \u7684\u57fa\u7840\u4e0a\u4f7f\u7528 JS \u505a\u4e86\u4e00\u6b21\u5c01\u88c5\u3002\u6eda\u52a8\u4f53\u9a8c\u90e8\u5206\u7531 Native \u8d1f\u8d23\uff0c\u800c React \u90e8\u5206\u5219\u4e13\u6ce8\u4e8e\u7ec4\u4ef6\u4f55\u65f6\u6e32\u67d3\u3001\u5982\u4f55\u6e32\u67d3\u7b49\u95ee\u9898\u3002<\/p>\n<h3>ListView \u6570\u636e\u6e90\u7ed3\u6784<\/h3>\n<p>\u6570\u636e\u6e90\u9ed8\u8ba4\u7684\u683c\u5f0f\u6709\u4e09\u4e2a\u7ef4\u5ea6\uff1a<\/p>\n<ul>\n<li>\u7b2c\u4e00\u4e2a\u7ef4\u5ea6\u662f sectionId \uff0c\u6807\u8bc6\u5c5e\u4e8e\u54ea\u4e00\u6bb5\uff0c \u53ef\u4ee5\u624b\u52a8\u6307\u5b9a\u6216\u9690\u5f0f\u5730\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u6216\u5bf9\u8c61\u7684 key \u503c\uff1b<\/li>\n<li>\u7b2c\u4e8c\u4e2a\u7ef4\u5ea6\u662f rowId \uff0c\u6807\u8bc6\u67d0\u4e2a\u6570\u636e\u6bb5\u4e0b\u7684\u67d0\u4e00\u4e2a\u884c\uff0c\u540c\u6837\u53ef\u4ee5\u624b\u52a8\u6307\u5b9a\u6216\u9690\u5f0f\u5730\u4f7f\u7528\u6570\u7ec4\u7d22\u5f15\u6216\u5bf9\u8c61\u7684 key \u503c\uff1b<\/li>\n<li>\u7b2c\u4e09\u4e2a\u7ef4\u5ea6\u662f\u5177\u4f53\u7684\u6570\u636e\u5bf9\u8c61\uff0c\u6839\u636e\u5b9e\u9645\u7684\u9700\u8981\u800c\u5b9a\u3002<\/li>\n<\/ul>\n<p>\u9700\u8981\u6ce8\u610f\u7684\u662f\uff0c\u4ee5\u4e0a\u53ea\u662f\u9ed8\u8ba4\u7684\u6570\u636e\u683c\u5f0f \uff0c\u5982\u679c\u4e0d\u7b26\u5408\u5b9e\u9645\u7684\u9700\u6c42\uff0c \u5b8c\u5168\u53ef\u4ee5\u4f7f\u7528\u81ea\u5b9a\u4e49\u7684\u6570\u636e\u7ed3\u6784\u3002\u552f\u4e00\u7684\u533a\u522b\u5c31\u662f\u9700\u8981\u989d\u5916\u6307\u5b9a\u7ed9 ListView \u6570\u636e\u6e90\u4e2d\u54ea\u4e9b\u662f id\uff0c\u54ea\u4e9b\u662f rowData\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.yezhou.me\/AppBlog\/images\/ReactNative\/ListView\u6570\u636e\u683c\u5f0f.png\" alt=\"ListView\u6570\u636e\u683c\u5f0f\" \/><\/p>\n<h3>DataSource \u6570\u636e\u6e90<\/h3>\n<p>DataSource \u7684\u6784\u9020\u51fd\u6570\u63a5\u6536\u4ee5\u4e0b4\u4e2a\u53c2\u6570\uff08\u90fd\u662f\u53ef\u9009\uff09\uff1a<\/p>\n<ul>\n<li>rowHasChanged\uff1a\u7528\u4e8e\u5728\u6570\u636e\u53d8\u5316\u7684\u65f6\u5019\uff0c\u8ba1\u7b97\u51fa\u53d8\u5316\u7684\u90e8\u5206\uff0c\u5728\u66f4\u65b0\u65f6\u53ea\u6e32\u67d3\u810f\u6570\u636e\uff1b<\/li>\n<li>sectionHeaderHasChanged\uff1a\u540c\u7406\uff0c\u5728\u5217\u8868\u5e26\u5206\u6bb5\u6807\u9898\u65f6\u9700\u8981\u5b9e\u73b0\uff1b<\/li>\n<li>getRowData\/getSectionHeaderData\uff1a \u5982\u679c\u9075\u5faa\u9ed8\u8ba4\u7684\u6570\u636e\u6e90\u683c\u5f0f\uff0c\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u5c31\u6ca1\u6709\u5fc5\u8981\u5b9e\u73b0\uff0c\u7528\u5185\u90e8\u9ed8\u8ba4\u7684\u5373\u53ef\uff1b\u800c\u5f53\u6570\u636e\u6e90\u683c\u5f0f\u662f\u81ea\u5b9a\u4e49\u65f6\uff0c\u9700\u8981\u624b\u52a8\u5b9e\u73b0\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u3002<\/li>\n<\/ul>\n<p>DataSource \u7684\u521d\u59cb\u5316\u4e00\u822c\u5728 constructor \u65b9\u6cd5\u4e2d<\/p>\n<p>\u6570\u636e\u6e90\u786e\u5b9a\u540e\uff0c\u4e0b\u4e00\u4e2a\u5de5\u4f5c\u5c31\u662f\u5217\u8868\u7684\u6e32\u67d3\u3002\u5728\u6e32\u67d3\u65f6\u53d1\u6325\u91cd\u8981\u4f5c\u7528\u7684\u662f renderRow \u5c5e\u6027\uff0c\u5b83\u63a5\u6536\u6570\u636e\u6e90\u4e2d\u4fdd\u5b58\u7684\u6570\u636e\u5bf9\u8c61\uff0c\u5e76\u901a\u8fc7\u8fd4\u56de\u503c\u786e\u5b9a\u8be5\u884c\u8be5\u5982\u4f55\u8fdb\u884c\u5c55\u73b0\u3002\u6211\u4eec\u53ef\u4ee5\u5bf9\u6240\u6709\u884c\u7edf\u4e00\u8fdb\u884c\u5c55\u73b0\uff0c\u4e5f\u53ef\u4ee5\u6839\u636e\u91cc\u9762\u7684\u5b57\u6bb5\u505a\u51fa\u4e0d\u540c\u7684\u5c55\u73b0\u3002\u5728\u5217\u8868\u5305\u542b sectionHeader \u65f6\uff0c\u8fd8\u9700\u8981\u5b9e\u73b0 renderSectionHeader \u65b9\u6cd5\u3002<\/p>\n<blockquote>\n<p>\u6ce8\u610f\uff1a\u8981\u66f4\u65b0datasource\u4e2d\u7684\u6570\u636e\uff0c\u8bf7\uff08\u6bcf\u6b21\u90fd\u91cd\u65b0\uff09\u8c03\u7528cloneWithRows\u65b9\u6cd5\uff08\u5982\u679c\u7528\u5230\u4e86section\uff0c\u5219\u5bf9\u5e94\u8c03\u7528cloneWithRowsAndSections\u65b9\u6cd5\uff09\u3002\u6570\u636e\u6e90\u4e2d\u7684\u6570\u636e\u672c\u8eab\u662f\u4e0d\u53ef\u4fee\u6539\u7684\uff0c\u6240\u4ee5\u8bf7\u52ff\u76f4\u63a5\u5c1d\u8bd5\u4fee\u6539\u3002clone\u65b9\u6cd5\u4f1a\u81ea\u52a8\u63d0\u53d6\u65b0\u6570\u636e\u5e76\u8fdb\u884c\u9010\u884c\u5bf9\u6bd4\uff08\u4f7f\u7528rowHasChanged\u65b9\u6cd5\u4e2d\u7684\u7b56\u7565\uff09\uff0c\u8fd9\u6837ListView\u5c31\u4f1a\u77e5\u9053\u54ea\u4e9b\u884c\u9700\u8981\u91cd\u65b0\u6e32\u67d3\u3002<\/p>\n<\/blockquote>\n<h3>ListView\u7ec4\u4ef6\u57fa\u7840\u8303\u4f8b<\/h3>\n<p>\u8303\u4f8b1\uff1a\u521b\u5efa\u5e76\u521d\u59cb\u5316ListView\u65b9\u5f0f\u4e00<\/p>\n<pre><code class=\"language-javascript\">\/**\n * Sample React Native App\n * https:\/\/github.com\/facebook\/react-native\n * @flow\n *\/\n\nimport React, { Component } from &#039;react&#039;;\nimport {\n    AppRegistry,\n    StyleSheet,\n    Text,\n    ListView,\n    Image,\n    View\n} from &#039;react-native&#039;;\n\nclass RNAPP extends Component {\n    \/\/ \u521d\u59cb\u5316\u6a21\u62df\u6570\u636e\n    constructor(props) {\n        super(props);\n        const dataSource = new ListView.DataSource({rowHasChanged: (row1, row2) =&gt; row1 !== row2});\n        this.state = {\n            dataSource: dataSource.cloneWithRows([\n                &#039;John&#039;, &#039;Joel&#039;, &#039;James&#039;, &#039;Jimmy&#039;, &#039;Jackson&#039;, &#039;Jillian&#039;, &#039;Julie&#039;, &#039;Devin&#039;\n            ])\n        };\n    }\n\n    render() {\n        return (\n            &lt;View style={{paddingTop: 22}}&gt;\n                &lt;ListView\n                    dataSource = {this.state.dataSource}\n                    renderRow = {(rowData) =&gt; &lt;Text&gt;{rowData}&lt;\/Text&gt;}\n                    \/&gt;\n            &lt;\/View&gt;\n        );\n    }\n}\n\nAppRegistry.registerComponent(&#039;RNAPP&#039;, () =&gt; RNAPP);<\/code><\/pre>\n<p>\u8303\u4f8b2\uff1a\u521b\u5efa\u5e76\u521d\u59cb\u5316ListView\u65b9\u5f0f\u4e8c<\/p>\n<pre><code class=\"language-javascript\">\/**\n * Sample React Native App\n * https:\/\/github.com\/facebook\/react-native\n *\/\n\nimport React, { Component } from &#039;react&#039;;\nimport {\n    AppRegistry,\n    StyleSheet,\n    Text,\n    ScrollView,\n    Image,\n    ListView,\n    TouchableHighlight,\n    RecyclerViewBackedScrollView,\n    View,\n} from &#039;react-native&#039;;\n\nexport default class RNAPP extends Component {\n    constructor(props) {\n        super(props);\n        this.state = {\n            dataSource:new ListView.DataSource({\n                rowHasChanged:(row1,row2)=&gt; row1 !== row2,\n            }),\n        };\n    }\n\n    componentWillMount() {\n        this.dsfetchData();\n    }\n\n    render() {\n        return(\n            &lt;ListView\n                dataSource = {this.state.dataSource}\n                renderRow = {(rowData) =&gt; &lt;Text&gt;{rowData}&lt;\/Text&gt;}\n                style = {styles.listView}\n                \/&gt;\n        );\n    }\n\n    dsfetchData(){\n        this.setState({\n            dataSource: this.state.dataSource.cloneWithRows([&#039;John&#039;, &#039;Joel&#039;, &#039;James&#039;, &#039;Jimmy&#039;, &#039;Jackson&#039;, &#039;Jillian&#039;, &#039;Julie&#039;, &#039;Devin&#039;]),\n        });\n    }\n}\n\nconst styles = StyleSheet.create({\n    listView: {\n        paddingTop: 20,\n        backgroundColor: &#039;#F5FCFF&#039;,\n    },\n});\n\nAppRegistry.registerComponent(&#039;RNAPP&#039;, () =&gt; RNAPP);<\/code><\/pre>\n<p>\u8303\u4f8b3\uff1aListView\u6570\u636e\u6e90\u7ed3\u6784<\/p>\n<pre><code class=\"language-javascript\">\/**\n * Sample React Native App\n * https:\/\/github.com\/facebook\/react-native\n *\/\n\nimport React, { Component } from &#039;react&#039;;\nimport {\n    AppRegistry,\n    StyleSheet,\n    Text,\n    ScrollView,\n    Image,\n    ListView,\n    TouchableHighlight,\n    RecyclerViewBackedScrollView,\n    View,\n} from &#039;react-native&#039;;\n\nexport default class RNAPP extends Component{\n    constructor(props) {\n        super(props);\n        this.state = {\n            dataSource:new ListView.DataSource({\n                rowHasChanged:(row1,row2)=&gt; row1 !== row2,\n            }),\n        };\n    }\n\n    render() {\n        return(\n            &lt;ListView\n                dataSource = {this.state.dataSource}\n                renderRow = {this._renderRow}\n                style = {styles.listView}\n                \/&gt;\n        );\n    }\n\n    _renderRow(rowData, sectionID, rowID) {\n        return (\n            &lt;View&gt;\n                &lt;Text&gt;sectionID: {sectionID}&lt;\/Text&gt;\n                &lt;Text&gt;rowID: {rowID}&lt;\/Text&gt;\n                &lt;Text&gt;rowData: {rowData}&lt;\/Text&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    componentDidMount() {\n        this.dsfetchData();\n    }\n\n    dsfetchData() {\n        this.setState({\n            dataSource: this.state.dataSource.cloneWithRows([&#039;John&#039;, &#039;Joel&#039;, &#039;James&#039;, &#039;Jimmy&#039;, &#039;Jackson&#039;, &#039;Jillian&#039;, &#039;Julie&#039;, &#039;Devin&#039;]),\n        });\n    }\n}\n\nconst styles = StyleSheet.create({\n    listView: {\n        paddingTop: 20,\n        backgroundColor: &#039;#F5FCFF&#039;,\n    },\n});\n\nAppRegistry.registerComponent(&#039;RNAPP&#039;, () =&gt; RNAPP);<\/code><\/pre>\n<p>\u8303\u4f8b4\uff1aListView\u6570\u636e\u586b\u5145<\/p>\n<pre><code class=\"language-javascript\">\/**\n * Sample React Native App\n * https:\/\/github.com\/facebook\/react-native\n *\/\n\nimport React, { Component } from &#039;react&#039;;\nimport {\n    AppRegistry,\n    StyleSheet,\n    Text,\n    ScrollView,\n    Image,\n    ListView,\n    TouchableHighlight,\n    RecyclerViewBackedScrollView,\n    View,\n} from &#039;react-native&#039;;\n\n\/\/var MOCKED_MOVIES_DATA = [\n\/\/    {title: &#039;\u6807\u9898&#039;, year: &#039;2015&#039;, posters: {thumbnail: &#039;http:\/\/i.imgur.com\/UePbdph.jpg&#039;}},\n\/\/];\n\n\/**\n * \u4e3a\u4e86\u907f\u514d\u9a9a\u6270\uff0c\u4f7f\u7528\u4e00\u4e2a\u6837\u4f8b\u6570\u636e\u6765\u66ff\u4ee3Rotten Tomatoes\u7684API\u8bf7\u6c42\uff0c\u8fd9\u4e2a\u6837\u4f8b\u6570\u636e\u653e\u5728React Native\u7684Github\u5e93\u4e2d\u3002\n *\/\nvar REQUEST_URL = &#039;https:\/\/raw.githubusercontent.com\/facebook\/react-native\/master\/docs\/MoviesExample.json&#039;;\n\nclass RNAPP extends Component{\n\n    constructor(props) {\n        super(props);\n        this.state = {\n            loaded: false,\n            dataSource: new ListView.DataSource({\n                rowHasChanged: (row1,row2) =&gt; row1 !== row2,\n            }),\n        };\n    }\n\n    render() {\n        if (!this.state.loaded) {\n            \/\/\u5982\u679cmovies==null\uff0c\u5373\u521d\u59cb\u60c5\u51b5\uff0c\u5219\u6e32\u67d3\u52a0\u8f7d\u89c6\u56fe\n            return this.renderLoadingView();\n        }\n\n        \/\/\u4ece\u7f51\u7edc\u4e0a\u83b7\u53d6\u6570\u636e\u7684\u60c5\u51b5\n        \/\/var movie = this.state.movies[0];\n        \/\/return this.renderMovie(movie);\n\n        return(\n            &lt;ListView\n                dataSource = {this.state.dataSource}\n                renderRow = {this.renderMovie}\n                style = {styles.listView}\n                \/&gt;\n        );\n    }\n\n    renderLoadingView() {\n        return (\n            &lt;View style={styles.container}&gt;\n                &lt;Text&gt;\n                    \u6b63\u5728\u7f51\u7edc\u4e0a\u83b7\u53d6\u7535\u5f71\u6570\u636e\u2026\u2026\n                &lt;\/Text&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    \/\/\u6e32\u67d3\u4e00\u4e2a\u7535\u5f71\u4fe1\u606f\n    renderMovie(movie) {\n        return (\n            &lt;View style={styles.container}&gt;\n                &lt;Image\n                    source={{uri: movie.posters.thumbnail}}\n                    style={styles.thumbnail}\n                    \/&gt;\n                &lt;View style={styles.rightContainer}&gt;\n                    &lt;Text style={styles.title}&gt;{movie.title}&lt;\/Text&gt;\n                    &lt;Text style={styles.year}&gt;{movie.year}&lt;\/Text&gt;\n                &lt;\/View&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    componentDidMount() {\n        this.fetchData();\n    }\n\n    \/\/\u5728React\u7684\u5de5\u4f5c\u673a\u5236\u4e0b\uff0csetState\u5b9e\u9645\u4e0a\u4f1a\u89e6\u53d1\u4e00\u6b21\u91cd\u65b0\u6e32\u67d3\u7684\u6d41\u7a0b\uff0c\u6b64\u65f6render\u51fd\u6570\u88ab\u89e6\u53d1\uff0c\u53d1\u73b0this.state.movies\u4e0d\u518d\u662fnull\n    fetchData() {\n        fetch(REQUEST_URL)\n            .then((response) =&gt; response.json())\n            .then((responseData) =&gt; {\n                this.setState({\n                    dataSource: this.state.dataSource.cloneWithRows(responseData.movies),\n                    loaded: true,\n                });\n            })\n            .done();\n        \/\/\u8c03\u7528done()\uff0c\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\u800c\u4e0d\u662f\u7b80\u5355\u5ffd\u7565\n    }\n}\n\nconst styles = StyleSheet.create({\n    container: {\n        flex: 1,\n        flexDirection: &#039;row&#039;,\n        justifyContent: &#039;center&#039;,\n        alignItems: &#039;center&#039;,\n        backgroundColor: &#039;#F5FCFF&#039;,\n    },\n    listView: {\n        paddingTop: 20,\n        backgroundColor: &#039;#F5FCFF&#039;,\n    },\n    thumbnail: {\n        width: 53,\n        height: 81,\n    },\n    \/\/\u4f7frightContainer\u5728\u7236\u5bb9\u5668\u4e2d\u5360\u636eImage\u4e4b\u5916\u5269\u4e0b\u7684\u5168\u90e8\u7a7a\u95f4\n    rightContainer: {\n        flex: 1,\n    },\n    title: {\n        fontSize: 20,\n        marginBottom: 8,\n        textAlign: &#039;left&#039;,\n    },\n    year: {\n        textAlign: &#039;left&#039;,\n    },\n});\n\nAppRegistry.registerComponent(&#039;RNAPP&#039;, () =&gt; RNAPP);<\/code><\/pre>\n<h2>ListView\u7ec4\u4ef6\u81ea\u5b9a\u4e49\u6570\u636e\u7ed3\u6784<\/h2>\n<h3>dataBlob \u6570\u636e<\/h3>\n<p><code>dataBlob<\/code>\uff1aThe dataBlob is a data structure (generally an object) that holds all the data powering the ListView<\/p>\n<p>dataBlob \u5305\u542bListView\u6240\u9700\u7684\u6240\u6709\u6570\u636e\uff08section header \u548c rows\uff09\uff0c\u5728ListView\u6e32\u67d3\u6570\u636e\u65f6\uff0c\u4f7f\u7528 getSectionData \u548c getRowData \u6765\u6e32\u67d3\u6bcf\u4e00\u884c\u6570\u636e\u3002dataBlob \u7684 key \u503c\u5305\u542b sectionID \u548c rowId\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.yezhou.me\/AppBlog\/images\/ReactNative\/DataBlob.png\" alt=\"DataBlob\" \/><\/p>\n<p><code>sectionIDs[]<\/code>\uff1a\u7528\u4e8e\u6807\u8bc6\u6bcf\u7ec4section<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.yezhou.me\/AppBlog\/images\/ReactNative\/sectionIDs.png\" alt=\"sectionIDs\" \/><\/p>\n<p><code>rowIDs[]<\/code>\uff1a\u7528\u4e8e\u63cf\u8ff0\u6bcf\u4e2a section \u91cc\u7684\u6bcf\u884c\u6570\u636e\u7684\u4f4d\u7f6e\u53ca\u662f\u5426\u9700\u8981\u6e32\u67d3\u3002\u5728ListView\u6e32\u67d3\u65f6\uff0c\u4f1a\u5148\u904d\u5386 rowIDs \u83b7\u53d6\u5230\u5bf9\u5e94\u7684 dataBlob \u6570\u636e\u3002<\/p>\n<p>rowData \u7684\u7d22\u5f15\u65b9\u5f0f\uff1a<code>dataBlob[sectionId:rowId]<\/code><\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.yezhou.me\/AppBlog\/images\/ReactNative\/rowIDs.png\" alt=\"rowIDs\" \/><\/p>\n<h3>React Native ListView sticky\u6548\u679c\u5b9e\u73b0<\/h3>\n<p>Android \u7247\u6bb5\u5934sticky\u5931\u6548\u539f\u56e0\uff1a<\/p>\n<ul>\n<li>1) Found this out by accident, but if you put your ListView inside a ScrollView, the headers will not be sticky<\/li>\n<li>2) iOS RCTScrollView implements sticky headers\uff0c\u800cAndroid\u6ca1\u6709<\/li>\n<li>3) ListView\u7684Android\u7248\u672c\u4e0d\u652f\u6301sticky-header\u7279\u6027<\/li>\n<li>4) Android \u539f\u751fsticky\u6548\u679c\u63a7\u4ef6\u53ef\u4f7f\u7528StickyScrollViewItems\u66ff\u4ee3\uff1a<a target=\"_blank\" rel=\"noopener\" href=\"https:\/\/github.com\/emilsjolander\/StickyScrollViewItems\">https:\/\/github.com\/emilsjolander\/StickyScrollViewItems<\/a><\/li>\n<\/ul>\n<pre><code class=\"language-javascript\">\/**\n * Sample React Native App\n * https:\/\/github.com\/facebook\/react-native\n *\/\n\nimport React, { Component } from &#039;react&#039;;\nimport {\n    AppRegistry,\n    StyleSheet,\n    Text,\n    ScrollView,\n    Image,\n    ListView,\n    TouchableHighlight,\n    RecyclerViewBackedScrollView,\n    View,\n} from &#039;react-native&#039;;\n\nclass RNAPP extends Component{\n    constructor(props) {\n        super(props);\n        var getSectionData = (dataBlob, sectionID) =&gt; {\n            return dataBlob[sectionID];\n        };\n\n        var getRowData = (dataBlob, sectionID, rowID) =&gt; {\n            return dataBlob[sectionID + &#039;:&#039; + rowID];\n        };\n\n        this.state = {\n            loaded: false,\n            dataSource: new ListView.DataSource({\n                getSectionData: getSectionData,\n                getRowData: getRowData,\n                rowHasChanged: (row1,row2)=&gt; row1 !== row2,\n                sectionHeaderHasChanged: (s1, s2) =&gt; s1 !== s2\n            }),\n        };\n    }\n\n    render() {\n        if (!this.state.loaded) {\n            return this.renderLoadingView();\n        }\n\n        return(\n            &lt;View style={styles.container}&gt;\n                &lt;View style={styles.header}&gt;\n                    &lt;Text style={styles.headerText}&gt;User List&lt;\/Text&gt;\n                &lt;\/View&gt;\n\n                &lt;ListView\n                    dataSource = {this.state.dataSource}\n                    style = {styles.listview}\n                    renderRow = {this.renderRow}\n                    renderSectionHeader = {this.renderSectionHeader}\n                    \/&gt;\n            &lt;\/View&gt;\n        );\n\n    }\n\n    renderSectionHeader(sectionData, sectionID) {\n        return (\n            &lt;View style={styles.section}&gt;\n                &lt;Text style={styles.text}&gt;\u7247\u5934-\u516c\u53f8\u540d:{sectionData}&lt;\/Text&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    renderRow (rowData, sectionID, rowID) {\n        return (\n            &lt;View style={styles.rowStyle}&gt;\n                &lt;Text style={styles.rowText}&gt;{rowData.name.title} {rowData.name.first} {rowData.name.last}-{sectionID}-{rowID}&lt;\/Text&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    renderLoadingView() {\n        return (\n            &lt;View style={styles.loadingpage}&gt;\n                &lt;Text&gt;\n                    \u6b63\u5728\u7f51\u7edc\u4e0a\u83b7\u53d6\u7535\u5f71\u6570\u636e\u2026\u2026\n                &lt;\/Text&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    componentDidMount() {\n        this.fetchData();\n    }\n\n    fetchData () {\n        var responseData={\n            &quot;results&quot; : [\n                {\n                    &quot;organization&quot;:&quot;\u963f\u91cc\u5df4\u5df4&quot;,\n                    &quot;id&quot;: 1234812,\n                    &quot;users&quot;: [{&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title1&quot;,&quot;first&quot;:&quot;marga&quot;,&quot;last&quot;:&quot;seegers&quot;},&quot;md5&quot;:&quot;589a574553250be33f3b1170624ad2d1&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title2&quot;,&quot;first&quot;:&quot;kanne&quot;,&quot;last&quot;:&quot;telar&quot;},&quot;md5&quot;:&quot;5cbc80332e3523dd9d90cc116daf9d8e&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title3&quot;,&quot;first&quot;:&quot;livia&quot;,&quot;last&quot;:&quot;stout&quot;},&quot;md5&quot;:&quot;7d8c37997f09c122794651b1ec841491&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title4&quot;,&quot;first&quot;:&quot;dian&quot;,&quot;last&quot;:&quot;grinwis&quot;},&quot;md5&quot;:&quot;3956e950cbbf896533aef74c2c82cd89&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title5&quot;,&quot;first&quot;:&quot;sky&quot;,&quot;last&quot;:&quot;vander&quot;},&quot;md5&quot;:&quot;8d3c0c7c2338280d383815eeb93509f6&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title6&quot;,&quot;first&quot;:&quot;davi&quot;,&quot;last&quot;:&quot;kero&quot;},&quot;md5&quot;:&quot;c84ceab40f165ace6d8e91232a6905ce&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title7&quot;,&quot;first&quot;:&quot;jurren&quot;,&quot;last&quot;:&quot;kempen&quot;},&quot;md5&quot;:&quot;c56b46820b77e86cbfb7aaa519e9c4dc&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title8&quot;,&quot;first&quot;:&quot;alfons&quot;,&quot;last&quot;:&quot;opden&quot;},&quot;md5&quot;:&quot;8ad86f9082ffc5d59d97ad65da740b76&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title9&quot;,&quot;first&quot;:&quot;oene&quot;,&quot;last&quot;:&quot;stroo&quot;},&quot;md5&quot;:&quot;e756d75093bb3a65e5a6561eb04e11a1&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title10&quot;,&quot;first&quot;:&quot;yanick&quot;,&quot;last&quot;:&quot;leuveren&quot;},&quot;md5&quot;:&quot;dbcdaf6a92e48e2dd0b87053a6c0a460&quot;}}]\n                },\n                {\n                    &quot;organization&quot;: &quot;\u817e\u8baf&quot;,\n                    &quot;id&quot;: 1235513,\n                    &quot;users&quot;: [{&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title1&quot;,&quot;first&quot;:&quot;nicole&quot;,&quot;last&quot;:&quot;sullivan&quot;},&quot;md5&quot;:&quot;9bc08bb89d4b7163734e5a82bc1c913f&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title2&quot;,&quot;first&quot;:&quot;danny&quot;,&quot;last&quot;:&quot;ellis&quot;},&quot;md5&quot;:&quot;5084736a5dc54b3d01ab466cbe5a2bfd&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title3&quot;,&quot;first&quot;:&quot;richard&quot;,&quot;last&quot;:&quot;morgan&quot;},&quot;md5&quot;:&quot;5cf586edf1c296d439fc8c760ce0da78&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title4&quot;,&quot;first&quot;:&quot;adrian&quot;,&quot;last&quot;:&quot;davies&quot;},&quot;md5&quot;:&quot;17ae93548bf33c9fa6765339802eb9f7&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title5&quot;,&quot;first&quot;:&quot;charlie&quot;,&quot;last&quot;:&quot;snyder&quot;},&quot;md5&quot;:&quot;62bfb188b82a370c81d70c41b08f44fa&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title6&quot;,&quot;first&quot;:&quot;donald&quot;,&quot;last&quot;:&quot;fitzpatrick&quot;},&quot;md5&quot;:&quot;9ee42fe6081031aa5d798a1afcfeee19&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title7&quot;,&quot;first&quot;:&quot;adrian&quot;,&quot;last&quot;:&quot;hawkins&quot;},&quot;md5&quot;:&quot;f466f40834aa260d6ab86bee912fc443&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title8&quot;,&quot;first&quot;:&quot;caitlin&quot;,&quot;last&quot;:&quot;robertson&quot;},&quot;md5&quot;:&quot;10eaa195e29753ca6686755fceddef53&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title9&quot;,&quot;first&quot;:&quot;grace&quot;,&quot;last&quot;:&quot;johnston&quot;},&quot;md5&quot;:&quot;d91f66fe034218a2975ebd7db4738a12&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title10&quot;,&quot;first&quot;:&quot;rosie&quot;,&quot;last&quot;:&quot;douglas&quot;},&quot;md5&quot;:&quot;648b75b00311daa164439d898be76cf1&quot;}}]\n                },\n                {\n                    &quot;organization&quot;: &quot;\u767e\u5ea6&quot;,\n                    &quot;id&quot;: 1237141,\n                    &quot;users&quot;: [{&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title1&quot;,&quot;first&quot;:&quot;joyce&quot;,&quot;last&quot;:&quot;little&quot;},&quot;md5&quot;:&quot;5b3318e717934073039028c9e5125896&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title2&quot;,&quot;first&quot;:&quot;ann&quot;,&quot;last&quot;:&quot;gonzales&quot;},&quot;md5&quot;:&quot;bc7a5338eb89da8b3044326277e7a9f1&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title3&quot;,&quot;first&quot;:&quot;genesis&quot;,&quot;last&quot;:&quot;olson&quot;},&quot;md5&quot;:&quot;f296f1cdcf1a901fc0d819e87f9db287&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title4&quot;,&quot;first&quot;:&quot;peyton&quot;,&quot;last&quot;:&quot;simmmons&quot;},&quot;md5&quot;:&quot;9835af99ec882eb8f29a5620d12181d6&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title5&quot;,&quot;first&quot;:&quot;ruby&quot;,&quot;last&quot;:&quot;palmer&quot;},&quot;md5&quot;:&quot;752c778c0f0b6d68cd61b636c75d1ddd&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title6&quot;,&quot;first&quot;:&quot;robin&quot;,&quot;last&quot;:&quot;perkins&quot;},&quot;md5&quot;:&quot;343d690344f146b8b9b0fecd0470e8bc&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title7&quot;,&quot;first&quot;:&quot;steve&quot;,&quot;last&quot;:&quot;dean&quot;},&quot;md5&quot;:&quot;353ec55e24648680ee30caeb32a8eb82&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title8&quot;,&quot;first&quot;:&quot;jessie&quot;,&quot;last&quot;:&quot;barnett&quot;},&quot;md5&quot;:&quot;8405ec6770a49f42fa00f94c2938d963&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title9&quot;,&quot;first&quot;:&quot;ann&quot;,&quot;last&quot;:&quot;berry&quot;},&quot;md5&quot;:&quot;140c33a7c143de515466ae0d6ff08b3a&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title10&quot;,&quot;first&quot;:&quot;hailey&quot;,&quot;last&quot;:&quot;cunningham&quot;},&quot;md5&quot;:&quot;7b8d57609043dc4947d1a65993ae6833&quot;}}]\n                },\n                {\n                    &quot;organization&quot;: &quot;\u5c0f\u7c73&quot;,\n                    &quot;id&quot;: 1727272,\n                    &quot;users&quot;: [{&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title1&quot;,&quot;first&quot;:&quot;tommy&quot;,&quot;last&quot;:&quot;stanley&quot;},&quot;md5&quot;:&quot;2155c170ed25a160f6202289bbb26aa5&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title2&quot;,&quot;first&quot;:&quot;rose&quot;,&quot;last&quot;:&quot;gregory&quot;},&quot;md5&quot;:&quot;ea3043ea9b36202218760e1e20c1a698&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title3&quot;,&quot;first&quot;:&quot;gilbert&quot;,&quot;last&quot;:&quot;jennings&quot;},&quot;md5&quot;:&quot;b9cec0adf70102f2f2864babd802c52c&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title4&quot;,&quot;first&quot;:&quot;alexander&quot;,&quot;last&quot;:&quot;howell&quot;},&quot;md5&quot;:&quot;1e27d0c330372b8dc2e88dc6f34d9ebf&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title5&quot;,&quot;first&quot;:&quot;eliza&quot;,&quot;last&quot;:&quot;perry&quot;},&quot;md5&quot;:&quot;c9b82b35a31e2b117fd8fe296af9a436&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title6&quot;,&quot;first&quot;:&quot;leah&quot;,&quot;last&quot;:&quot;gregory&quot;},&quot;md5&quot;:&quot;99561739ed756ef2bd633f7c22d5db77&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title7&quot;,&quot;first&quot;:&quot;catherine&quot;,&quot;last&quot;:&quot;lee&quot;},&quot;md5&quot;:&quot;78a29d0a21a66bb3e816d96ddb896c47&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title8&quot;,&quot;first&quot;:&quot;amelia&quot;,&quot;last&quot;:&quot;obrien&quot;},&quot;md5&quot;:&quot;76111906ba52da4ef50ac73871fa0da1&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;female&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title9&quot;,&quot;first&quot;:&quot;fiona&quot;,&quot;last&quot;:&quot;may&quot;},&quot;md5&quot;:&quot;9a35923e434be652e5441a2c49509dc6&quot;}},\n                              {&quot;user&quot;:{&quot;gender&quot;:&quot;male&quot;,&quot;name&quot;:{&quot;title&quot;:&quot;title10&quot;,&quot;first&quot;:&quot;earl&quot;,&quot;last&quot;:&quot;banks&quot;},&quot;md5&quot;:&quot;8071292ec92ad705c6be09b573d8bd8c&quot;}}]\n                }\n            ]\n        };\n\n        var organizations = responseData.results,\n            length = organizations.length,\n            dataBlob = {},\n            sectionIDs = [],\n            rowIDs = [],\n            organization,\n            users,\n            userLength,\n            user,\n            i,\n            j;\n\n        for (i = 0; i &lt; length; i++) {\n            organization = organizations[i];\n            sectionIDs.push(organization.id);\n\n            dataBlob[organization.id] = organization.organization;\n\n            users = organization.users;\n            userLength = users.length;\n\n            rowIDs[i] = [];  \/\/rowIDs\u662f\u4e00\u4e2a\u4e8c\u7ef4\u6570\u7ec4\n\n            for(j = 0; j &lt; userLength; j++) {\n                user = users[j].user;\n                rowIDs[i].push(user.md5);  \/\/\u4e8c\u7ef4\u6570\u7ec4\u653e\u7684\u90fd\u662f md5\n                dataBlob[organization.id + &#039;:&#039; + user.md5] = user;\n            }\n        }\n\n        this.setState({\n            dataSource: this.state.dataSource.cloneWithRowsAndSections(dataBlob, sectionIDs, rowIDs),\n            loaded: true\n        });\n    }\n}\n\nconst styles = StyleSheet.create({\n    loadingpage:{\n        flex: 1,\n        flexDirection: &#039;row&#039;,\n        justifyContent: &#039;center&#039;,\n        alignItems: &#039;center&#039;,\n        backgroundColor: &#039;#F5FCFF&#039;,\n    },\n    container: {\n        flex: 1\n    },\n    header: {\n        height: 60,\n        justifyContent: &#039;center&#039;,\n        alignItems: &#039;center&#039;,\n        backgroundColor: &#039;#3F51B5&#039;,\n        flexDirection: &#039;column&#039;,\n        paddingTop: 25\n    },\n    headerText: {\n        fontWeight: &#039;bold&#039;,\n        fontSize: 20,\n        color: &#039;white&#039;\n    },\n    text: {\n        color: &#039;white&#039;,\n        paddingHorizontal: 8,\n        fontSize: 16\n    },\n    rowStyle: {\n        paddingVertical: 20,\n        paddingLeft: 16,\n        borderTopColor: &#039;white&#039;,\n        borderLeftColor: &#039;white&#039;,\n        borderRightColor: &#039;white&#039;,\n        borderBottomColor: &#039;#E0E0E0&#039;,\n        borderWidth: 1\n    },\n    rowText: {\n        color: &#039;#212121&#039;,\n        fontSize: 16\n    },\n    subText: {\n        fontSize: 14,\n        color: &#039;#757575&#039;\n    },\n    section: {\n        flexDirection: &#039;column&#039;,\n        justifyContent: &#039;center&#039;,\n        alignItems: &#039;flex-start&#039;,\n        padding: 6,\n        backgroundColor: &#039;#2196F3&#039;\n    }\n});\n\nAppRegistry.registerComponent(&#039;RNAPP&#039;, () =&gt; RNAPP);<\/code><\/pre>\n<h2>ListView\u7ec4\u4ef6\u9ad8\u7ea7\u7279\u6027<\/h2>\n<h3>\u5206\u9875<\/h3>\n<p>\u5f53\u6570\u636e\u91cf\u5f88\u5927\u7684\u65f6\u5019\u5982\u4f55\u5206\u9875\u52a0\u8f7d\uff0c\u8fd9\u79cd\u60c5\u5f62\u5206\u4e24\u79cd\u60c5\u51b5\u8003\u8651\uff1a<\/p>\n<ul>\n<li>\u6570\u636e\u4e00\u6b21\u6027\u62ff\u5230\uff0c\u8fb9\u6eda\u52a8\u8fb9\u52a0\u8f7d<\/li>\n<li>\u6570\u636e\u4e0d\u662f\u4e00\u6b21\u6027\u62ff\u5230\uff0c\u800c\u662f\u6709\u53ef\u80fd\u5206\u5c4f\u53d6\u6570\u636e<\/li>\n<\/ul>\n<p>\u5bf9\u4e8e\u7b2c\u4e00\u79cd\u60c5\u51b5\uff0c\u5728 ListView \u5185\u90e8\u5176\u5b9e\u5df2\u7ecf\u505a\u4e86\u5206\u9875\u7684\u5904\u7406\uff1a<\/p>\n<p>ListView \u5185\u90e8\u901a\u8fc7 curRenderedRowsCount \u72b6\u6001\u4fdd\u5b58\u5df2\u6e32\u67d3\u7684\u884c\u6570\uff1b\u521d\u59cb\u72b6\u6001\u4e0b\uff0c\u8981\u52a0\u8f7d\u7684\u6570\u636e\u6761\u6570\u7b49\u4e8e initialListSize (\u9ed8\u8ba4\u4e3a 10 \u6761)\uff1b\u5728\u6eda\u52a8\u65f6\u68c0\u6d4b\u5f53\u524d\u6eda\u52a8\u7684\u4f4d\u7f6e\u548c\u6700\u5e95\u90e8\u7684\u8ddd\u79bb\uff0c\u5982\u679c\u5c0f\u4e8e scrollRenderAheadDistance (\u9ed8\u8ba4\u4e3a 1000)\uff0c\u5c31\u66f4\u65b0 curRenderedRowsCount\uff0c\u5728\u5b83\u539f\u6709\u503c\u57fa\u7840\u4e0a\u52a0 pageSize \u4e2a(\u9ed8\u8ba4\u4e3a 1 \u6761)\uff1b\u7531\u4e8e\u5c5e\u6027\u53d8\u5316\uff0c\u89e6\u53d1 ListView \u91cd\u65b0 render\u3002\u5728\u6e32\u67d3\u8fc7\u7a0b\u4e2d\uff0ccurRenderedRowsCount \u8d77\u5230\u622a\u65ad\u6570\u636e\u7684\u4f5c\u7528\uff0cReact \u7684 diff \u7b97\u6cd5\u4f7f\u5f97\u53ea\u6709\u65b0\u52a0\u5165\u7684\u6570\u636e\u624d\u4f1a\u6e32\u67d3\u5230\u4e86\u754c\u9762\u4e0a\u3002\u6574\u4e2a\u8fc7\u7a0b\u7c7b\u4f3c\u4e8e Web \u7aef\u61d2\u52a0\u8f7d\u673a\u5236\uff0c\u5373 \u6bcf\u6b21\u5728\u548c\u5e95\u90e8\u7684\u8ddd\u79bb\u8fbe\u5230\u4e00\u4e2a\u9608\u503c\u65f6\uff0c\u52a0\u8f7d\u63a5\u4e0b\u6765\u7684 pageSize \u4e2a\u6570\u636e \u3002<\/p>\n<p>\u5bf9\u4e8e\u7b2c\u4e8c\u79cd\u60c5\u51b5\uff0cListView \u63d0\u4f9b\u4e86\u76f8\u5173\u7684\u5c5e\u6027\uff1a<\/p>\n<p><code>onEndReachedThreshold<\/code>\uff1a\u5728\u6eda\u52a8\u5373\u5c06\u5230\u8fbe\u5e95\u90e8\u65f6\u89e6\u53d1\uff1b<br \/>\n<code>onEndReached<\/code>\uff1a\u5728\u5df2\u7ecf\u5230\u8fbe\u5e95\u90e8\u65f6\u89e6\u53d1\uff1b<\/p>\n<p>\u6211\u4eec\u53ef\u4ee5\u5728\u8fd9\u4e24\u4e2a\u65b9\u6cd5\u4e2d\u8c03\u7528\u63a5\u53e3\u53bb\u62ff\u6570\u636e\uff0c\u53d6\u5230\u6570\u636e\u540e\u518d\u66f4\u65b0\u6570\u636e\u6e90\u3002<\/p>\n<h3>\u591a\u5217 (Grid \u6548\u679c)<\/h3>\n<p>\u5f88\u591a\u9875\u9762\u4e2d\u7684\u5217\u8868\u5e76\u975e\u5355\u5217\u7684\uff0c\u901a\u8fc7\u5e03\u5c40\u5373\u53ef\u8fbe\u5230\u7f51\u683c\u6548\u679c\u3002ListView \u5e76\u6ca1\u6709\u5f3a\u5236\u8981\u6c42\u4e00\u4e2a rowData \u5728\u5c55\u793a\u65f6\u4e00\u5b9a\u8981\u5360\u6ee1\u4e00\u884c\uff0c\u5728\u591a\u5217\u7684\u60c5\u51b5\u4e0b\uff0c\u6211\u4eec\u9002\u65f6\u8c03\u6574\u6bcf\u4e2a rowData \u5360\u636e\u7684\u5bbd\u5ea6\u5373\u53ef\u3002<\/p>\n<p>\u7531\u4e8e React Native \u4f7f\u7528 Flexbox \u8fdb\u884c\u5e03\u5c40\uff0c\u7ed9ListView\u8bbe\u7f6e\u5c5e\u6027contentContainerStyle\uff1b\u5728\u5b9e\u73b0\u591a\u5217\u65f6\uff0c\u4e3b\u8981\u7528\u5230\u7684\u662f flexWrap: wrap \u5c5e\u6027\uff1a\u5b83\u7684\u6548\u679c\u7c7b\u4f3c\u4e8e float\uff0c\u5373\u6c34\u5e73\u5730\u6392\u5217\u6bcf\u4e00\u9879\uff0c\u5f53\u653e\u4e0d\u4e0b\u65f6\u8fdb\u884c\u6298\u884c\u5904\u7406\u3002\u5728\u8bbe\u7f6e\u6bcf\u884c\u89c6\u56fe\u5360\u636e\u4e00\u534a\u5bbd\u5ea6\u540e\u5373\u53ef\u8fbe\u5230\u4e24\u5217\u7684\u6548\u679c\uff0c\u591a\u5217\u7684\u7c7b\u4f3c\u3002<\/p>\n<p><img decoding=\"async\" src=\"http:\/\/www.yezhou.me\/AppBlog\/images\/ReactNative\/ListView\u591a\u5217-Grid\u6548\u679c.png\" alt=\"ListView\u591a\u5217-Grid\u6548\u679c\" \/><\/p>\n<p>Grid \u6548\u679c\u8303\u4f8b\uff1a<\/p>\n<pre><code class=\"language-javascript\">\/**\n * Sample React Native App\n * https:\/\/github.com\/facebook\/react-native\n *\/\n\nimport React, { Component } from &#039;react&#039;;\nimport {\n    AppRegistry,\n    StyleSheet,\n    Text,\n    ScrollView,\n    Image,\n    ListView,\n    TouchableHighlight,\n    RecyclerViewBackedScrollView,\n    View,\n} from &#039;react-native&#039;;\n\n\/**\n * \u4e3a\u4e86\u907f\u514d\u9a9a\u6270\uff0c\u4f7f\u7528\u4e00\u4e2a\u6837\u4f8b\u6570\u636e\u6765\u66ff\u4ee3Rotten Tomatoes\u7684API\u8bf7\u6c42\uff0c\u8fd9\u4e2a\u6837\u4f8b\u6570\u636e\u653e\u5728React Native\u7684Github\u5e93\u4e2d\u3002\n *\/\nvar REQUEST_URL = &#039;https:\/\/raw.githubusercontent.com\/facebook\/react-native\/master\/docs\/MoviesExample.json&#039;;\n\nclass HomeUI extends Component{\n    constructor(props) {\n        super(props);\n        this.state = {\n            loaded: false,\n            dataSource: new ListView.DataSource({\n                rowHasChanged: (row1,row2) =&gt; row1 !== row2,\n            }),\n        };\n    }\n\n    render() {\n        if (!this.state.loaded) {\n            return this.renderLoadingView();\n        }\n\n        \/\/\u4ece\u7f51\u7edc\u4e0a\u83b7\u53d6\u6570\u636e\u7684\u60c5\u51b5\n        \/\/var movie = this.state.movies[0];\n        \/\/return this.renderMovie(movie);\n\n        return(\n            &lt;ListView\n                dataSource = {this.state.dataSource}\n                renderRow = {this.renderMovie}\n                contentContainerStyle = {styles.list}\n                style = {styles.listView}\n                \/&gt;\n        );\n    }\n\n    renderLoadingView() {\n        return (\n            &lt;View style={styles.container1}&gt;\n                &lt;Text&gt;\n                    \u6b63\u5728\u7f51\u7edc\u4e0a\u83b7\u53d6\u7535\u5f71\u6570\u636e\u2026\u2026\n                &lt;\/Text&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    _pressText() {\n        alert(&#039;\u70b9\u51fb\u65f6\u95f4&#039;);\n    }\n\n    \/\/\u6e32\u67d3\u4e00\u4e2a\u7535\u5f71\u4fe1\u606f\n    renderMovie(movie) {\n        return (\n            &lt;View style={styles.container}&gt;\n                &lt;Image\n                    source={{uri: movie.posters.thumbnail}}\n                    style={styles.thumbnail}\n                    \/&gt;\n                &lt;Text style={styles.year} onPress={this._pressText}&gt;\u5e74\u4efd{movie.year}&lt;\/Text&gt;\n            &lt;\/View&gt;\n        );\n    }\n\n    componentDidMount() {\n        this.fetchData();\n    }\n\n    \/\/\u5728React\u7684\u5de5\u4f5c\u673a\u5236\u4e0b\uff0csetState\u5b9e\u9645\u4e0a\u4f1a\u89e6\u53d1\u4e00\u6b21\u91cd\u65b0\u6e32\u67d3\u7684\u6d41\u7a0b\uff0c\u6b64\u65f6render\u51fd\u6570\u88ab\u89e6\u53d1\uff0c\u53d1\u73b0this.state.movies\u4e0d\u518d\u662fnull\n    fetchData() {\n        fetch(REQUEST_URL)\n            .then((response) =&gt; response.json())\n            .then((responseData) =&gt; {\n                this.setState({\n                    dataSource: this.state.dataSource.cloneWithRows(responseData.movies),\n                    loaded: true,\n                });\n            })\n            .done();\n        \/\/\u8c03\u7528done()\uff0c\u53ef\u4ee5\u629b\u51fa\u5f02\u5e38\u800c\u4e0d\u662f\u7b80\u5355\u5ffd\u7565\n    }\n}\n\nconst styles = StyleSheet.create({\n    list: {\n        justifyContent: &#039;flex-start&#039;,\n        flexDirection: &#039;row&#039;,\n        flexWrap: &#039;wrap&#039;\n    },\n    container: {\n        width: 100,\n        height: 100,\n        backgroundColor: &#039;#F5FCFF&#039;,\n        margin:5,\n        alignItems:&#039;center&#039;,\n    },\n    listView: {\n        paddingTop: 20,\n        backgroundColor: &#039;#F5FCFF&#039;,\n    },\n    thumbnail: {\n        width: 80,\n        height: 80,\n        borderRadius:16,\n    },\n    \/\/\u4f7frightContainer\u5728\u7236\u5bb9\u5668\u4e2d\u5360\u636eImage\u4e4b\u5916\u5269\u4e0b\u7684\u5168\u90e8\u7a7a\u95f4\n    container1: {\n        flex: 1,\n        justifyContent:&#039;center&#039;,\n        alignItems:&#039;center&#039;,\n    },\n    title: {\n        fontSize: 14,\n        marginBottom: 8,\n    },\n    year: {\n        fontSize: 14,\n    },\n});\n\nAppRegistry.registerComponent(&#039;RNAPP&#039;, () =&gt; RNAPP);<\/code><\/pre>\n<h3>\u6eda\u52a8<\/h3>\n<p>ListView \u53ea\u662f\u6574\u5408\u4e86\u6570\u636e\u548c\u5c55\u73b0\uff0c\u4f46\u5b9e\u9645\u6eda\u52a8\u7684\u529f\u80fd\u8fd8\u662f\u7531 ScrollView \u5168\u6743\u8d1f\u8d23\u3002ScrollView \u5b9e\u73b0\u5b8c\u5168\u548c\u5e73\u53f0\u76f8\u5173\uff1a\u5728 iOS \u4e0a\uff0c\u5b83\u6620\u5c04\u4e3a RCTScrollView \uff1b\u5728 Android \u4e0a\uff0c\u5b83\u6620\u5c04\u4e3a RCTScrollView \u548c AndroidHorizontalScrollView \u3002<\/p>\n<p>React Native \u4f7f\u4e0d\u540c\u5e73\u53f0\u7684\u6280\u672f\u878d\u5408\u5728\u4e00\u8d77\uff0c\u540c\u65f6\u4e5f\u7ed9\u5f00\u53d1\u4eba\u5458\u63d0\u51fa\u4e86\u66f4\u9ad8\u7684\u8981\u6c42\u3002\u4ee5 ScrollView \u4e3a\u4f8b\uff0c\u5927\u91cf\u7684\u5c5e\u6027\u5176\u5b9e\u539f\u5c01\u4e0d\u52a8\u6620\u5c04\u7ed9\u4e86 UIScrollView \uff0c\u8fd9\u5c31\u610f\u5473\u7740\u5982\u679c\u60f3\u518d\u6df1\u5165\u5730\u7814\u7a76\u4e0b\u53bb\uff0c\u5fc5\u987b\u5bf9\u5ba2\u6237\u7aef\u76f8\u5173\u6280\u672f\u6709\u8db3\u591f\u4e86\u89e3\u3002\u65e0\u8bba\u662f\u524d\u7aef\u8fd8\u662f\u5ba2\u6237\u7aef\uff0c\u8df3\u51fa\u81ea\u5df1\u719f\u6089\u7684\u90a3\u7247\u9886\u57df\u4e5f\u8bb8\u624d\u662f\u66f4\u8fdb\u4e00\u6b65\u7684\u5173\u952e\u3002<\/p>\n<p>\u8c08\u5230\u6eda\u52a8\uff0c\u6709\u4e00\u70b9\u4e0d\u5f97\u4e0d\u8bf4\u7684\u5c31\u662f \u5217\u8868\u7684\u65e0\u9650\u52a0\u8f7d \uff0c\u8fd9\u7275\u6d89\u5230\u6eda\u52a8\u7684\u6027\u80fd\u3002<\/p>\n<p>Github \u4e0a\u7684\u8fd9\u4e2a issue \u5bf9\u6b64\u5c55\u5f00\u4e86\u70ed\u70c8\u7684\u8ba8\u8bba\u3002\u5176\u4e2d\u6709\u4eba\u5c31\u63d0\u5230\uff0c\u6570\u636e\u91cf\u5f88\u5927\u60c5\u51b5\u4e0b\uff0cListView \u5728\u52a0\u8f7d\u65f6\u6240\u5360\u7528\u7684 CPU \u548c\u5185\u5b58\u4f1a\u5927\u5927\u589e\u52a0\uff0c\u6eda\u52a8\u5230\u6700\u540e\u5c31\u4f1a\u5bfc\u81f4\u5e94\u7528 crash\u3002<\/p>\n<p>\u4e3a\u6b64\uff0cListView \u4e2d\u65b0\u6dfb\u52a0\u4e86\u4e00\u4e2a\u5b9e\u9a8c\u6027\u7684\u5c5e\u6027\uff1aremoveClippedSubviews \uff0c\u5b83\u80fd\u5728\u6eda\u52a8\u65f6\u53ca\u65f6\u5220\u6389\u5217\u8868\u4e2d\u5904\u4e8e\u89c6\u7a97\u7684\u4e4b\u5916\u7684\u884c\uff0c\u4ee5\u6b64\u8fbe\u5230\u964d\u4f4e\u5185\u5b58\u6d88\u8017\u7684\u76ee\u7684\u3002\u4e0d\u5e78\u7684\u662f\uff0c\u5373\u4f7f\u8bbe\u7f6e\u4e86\u8fd9\u4e2a\u5c5e\u6027\uff0c\u7a0b\u5e8f\u867d\u7136\u5404\u9879\u6307\u6807\u5360\u7528\u51cf\u5c11\u4e86\u4e0d\u5c11\uff0c\u4f46\u8fd8\u662f\u6ca1\u907f\u514d\u5d29\u6e83\u7684\u547d\u8fd0\u3002\u5904\u4e8e\u597d\u5947\uff0c\u6211\u4e5f\u5728\u6700\u65b0\u7248\u7684 ListView \u57fa\u7840\u4e0a\u505a\u4e86\u7b80\u5355\u5c1d\u8bd5\uff0c\u4e0d\u65ad\u52a0\u8f7d\u4e00\u4e2a\u65e0\u9650\u5927\u7684\u5217\u8868\uff0c\u4f46\u5e76\u6ca1\u6709\u51fa\u73b0\u5d29\u6e83\u7684\u60c5\u51b5\uff1a<\/p>\n<p>\u5373\u4f7f\u52a0\u8f7d\u4e86 3000\u30014000 \u884c\uff0cAndroid \u771f\u673a\u3001iOS \u771f\u673a\u548c iOS \u6a21\u62df\u5668\u4e0a\u90fd\u6ca1\u6709\u5d29\u6e83\uff1b<br \/>\nAndroid 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