React Native : How to get device Screen Brightness and render it

Question

I`m creating an React App to display device Info. I want to render Screen Brightness level, not in Console. How do I do it?

DeviceBrightness.getSystemBrightnessLevel().then(function(luminous) {
    console.log(luminous)
})

I expected to render the screen brightness level, not to display in console

Answer 1

import DeviceBrightness from 'react-native-device-brightness';
export default class App extends Component{
    constructor(props){
    super(props);
    this.state = {
  isLoaded: false,
  brightness: 0,
};

}
componentWillMount() {
DeviceBrightness.getSystemBrightnessLevel()
  .then((luminous) =>{
    this.setState({
      brightness: luminous,
      isLoaded: true,
    });
  });

}

render() {
return (
  <View style={styles.container}>
<Text style={styles.instructions}>{this.state.brightness}</Text>
 </View>
);

} }