React Native - Picker

In this chapter, we will create simple Picker with two available options.

Step 1: Create File

Here, the App.js folder will be used as a presentational component.

App.js

import React from  react 
import PickerExample from  ./PickerExample.js 

const App = () => {
   return (
      <PickerExample />
   )
}
export default App

Step 2: Logic

this.state.user is used for picker control.

The updateUser function will be triggered when a user is picked.

PickerExample.js

import React, { Component } from  react ;
import { View, Text, Picker, StyleSheet } from  react-native 

class PickerExample extends Component {
   state = {user:   }
   updateUser = (user) => {
      this.setState({ user: user })
   }
   render() {
      return (
         <View>
            <Picker selectedValue = {this.state.user} onValueChange = {this.updateUser}>
               <Picker.Item label = "Steve" value = "steve" />
               <Picker.Item label = "Ellen" value = "ellen" />
               <Picker.Item label = "Maria" value = "maria" />
            </Picker>
            <Text style = {styles.text}>{this.state.user}</Text>
         </View>
      )
   }
}
export default PickerExample

const styles = StyleSheet.create({
   text: {
      fontSize: 30,
      apgnSelf:  center ,
      color:  red 
   }
})

Output

If you cpck on the name it prompts you all three options as −

And you can pick one of them and the output will be pke.