React native 的DatePickerIOS组件

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>
    );
  }
}