ReactNativeListview的各个属性解释?

开发者账号

Android

ListView

人懒

ListView

rowHasChanged

布尔值

s1

如下

class Yes extends Component {



  constructor(){

    super();

    var ds = new ListView.DataSource({

      rowHasChanged: (r1, r2) => r1 !== r2

    });

    this.state = {

      dataSource: ds.cloneWithRows(['row 1', 'row 2']),

    }

  }



  componentDidMount(){

    var that = this;



    setTimeout(()=>{

      that.setState({

        dataSource: this.state.dataSource.cloneWithRows(['row 1', 'row 2','row 3'])

      });

    },1000);

  }



  render() {

    return (

   
      dataSource={this.state.dataSource}

      renderRow={(rowData,rowHasChanged) => {rowData +':'+ rowHasChanged}}

    />

    );

  }

}

!===

===

1秒后变为由于`setTimeout(...)`,

rowHasChanged: (r1, r2) => r1 !== r2

!==

===

rowHasChanged

ListView

另外想请教如何学习 react-native 的相关组件,总觉得官方文档看起来生涩.

setTimeout()

this

that

ES2015

that

_this