ReactNative Pass data from components

LoginButton.js

export default class LoginButton extends Component {
  changeText = () => {
    this.props.buttonClicked(this.props.title);
  }
  render() {
    return (
      <View style={styles.container}>
        <TouchableOpacity onPress={this.changeText}>
            <Text style = {styles.text}>
               {this.props.title}
            </Text>
         </TouchableOpacity>
      </View>
    );
  }
}