Platform react native

                                    React Native is an open-source mobile application framework created by Facebook.

It is used to develop applications for Android, iOS, Web and UWP by enabling
developers to use React along with native platform capabilities.

                                    npx react-native init AwesomeProject

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                                    import { Platform, StyleSheet } from 'react-native';

const styles = StyleSheet.create({
  container: {
    flex: 1,
    ...Platform.select({
      ios: {
        backgroundColor: 'red'
      },
      android: {
        backgroundColor: 'green'
      },
      default: {
        // other platforms, web for example
        backgroundColor: 'blue'
      }
    })
  }
});

                                      const design = Platform.select({
    android: {
      header: true
    },
    ios: {
	  header: false
    },
  });