react-native DatePicker日期选择组件的实现

import React, { Component } from ‘react‘;
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  TouchableHighlight,
  DatePickerIOS
} from ‘react-native‘;

//这是一个三方组件 github地址:https://github.com/eyaleizenberg/react-native-custom-action-sheet
var CustomActionSheet = require(‘react-native-custom-action-sheet‘);

class Demo extends Component {

  state = {
    datePickerModalVisible: false,  //选择器显隐标记
    chooseDate: new Date()  //选择的日期
  };

  _showDatePicker () { //切换显隐标记
    this.setState({datePickerModalVisible: !this.state.datePickerModalVisible});
  };

  _onDateChange (date) {  //改变日期state
    alert(date);  //弹出提示框: 显示你选择日期
    this.setState({
      chooseDate: date
    });
  };

  render() {

    let datePickerModal = (   //日期选择器组件 (根据标记赋值为 选择器 或 空)
      this.state.datePickerModalVisible ?
      <CustomActionSheet
        modalVisible={this.state.datePickerModalVisible}  //显隐标记
        onCancel={()=>this._showDatePicker()}>  //点击取消按钮 触发事件
          <View style={styles.datePickerContainer}>
            <DatePickerIOS
              mode={"datetime"}   //选择器模式: ‘date‘(日期), ‘time‘(时间), ‘datetime‘(日期和时间)
              minimumDate={new Date()}  //最小时间 (这里设置的是当前的时间)
              minuteInterval={30} //最小时间间隔 (这里设置的是30分钟)
              date={this.state.chooseDate}  //默认的时间
              onDateChange={this._onDateChange.bind(this)}  //日期被修改时回调此函数
            />
            </View>
       </CustomActionSheet> : null
    );

    return (
      <View style={styles.container}>
        <TouchableHighlight
          style={{backgroundColor:‘cyan‘, padding:5}}
          onPress={()=>this._showDatePicker()}  //按钮: 点击触发方法
          underlayColor=‘gray‘
          >
          <Text >show DatePick</Text>
        </TouchableHighlight>
        {datePickerModal}  //日期选择组件
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: ‘center‘,
    alignItems: ‘center‘,
    backgroundColor: ‘#F5FCFF‘,
  },
  datePickerContainer: {
    flex: 1,
    borderRadius: 5,
    justifyContent: ‘center‘,
    alignItems: ‘center‘,
    backgroundColor: ‘white‘,
    marginBottom: 10,
  },
});

AppRegistry.registerComponent(‘Demo‘, () => Demo);