export default class AlertDemo extends Component {

  render() {

    return (

      <View style={styles.container}>

          <DatePickerIOS date={new Date()} mode="time"/>

      </View>

    );

  }

}

export default class AlertDemo extends Component {

  static defaultprops ={

    date:new Date()    //初始化静态当前时间

  }

  constructor(props){

    super(props);

    this.state={         //动态state

    date:this.props.date

    }

  }

  render() {

    return (

      <View style={styles.container}>

        <DatePickerIOS

             date={this.state.date}

              onDateChange={(date)=>this.setState({date})} //当内容改变的时候出发此函数

             mode='time'/>

       </View>

    );

  }

}