import {
  WheelPicker,
  TimePicker,
  DatePicker
} from "react-native-wheel-picker-android";
import React, { Component } from "react";
import { AppRegistry, StyleSheet, Text, View, Button } from "react-native";
 
const wheelPickerData = [
  "sunday",
  "monday",
  "tuesday",
  "wednesday",
  "thursday",
  "friday"
];
 
class MyPicker extends Component {
  state = {
    selectedItem: 0
  };
 
  onItemSelected = selectedItem => {
    this.setState({ selectedItem });
  };
 
  onPress = () => {
    this.setState({ selectedItem: 3 });
  };
 
  render() {
    return (
      <View style={styles.container}>
        <Button title={"Select third element"} onPress={this.onPress} />
        <Text>Selected position: {this.state.selectedItem}</Text>
        <WheelPicker
          selectedItem={this.state.selectedItem}
          data={wheelPickerData}
          onItemSelected={this.onItemSelected}
        />
      </View>
    );
  }
}
 
module.exports = MyPicker;

onTimeSelected = date => {}
...
<TimePicker onTimeSelected={this.onTimeSelected}/>
 

onDateSelected = date => {}
...
<DatePicker onDateSelected={this.onDateSelected}/>