How to set Text Input focus in React Native

In this React Native source code example, the source code below illustrate how to set Text Input focus in React Native.

You can copy and adopt this source code example to your React Native project without reinventing the wheel.

import React, {Component} from 'react';
import { View,StyleSheet,TextInput,Alert} from 'react-native';

export default class App extends Component {
myFunction(){
  Alert.alert('You started typing')
}
    render() {
     return (
       <View style={styles.container}>
          <TextInput
            onFocus={()=>this.myFunction()}
            style={{backgroundColor: 'white',width: '90%'}}
          />
       </View>
       );
   }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,
    justifyContent: 'center',
    alignItems: 'center',
    backgroundColor: '#8ee3ab',
  },
});

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