nav bar in react native code example

Example 1: react navigation react native

### ISNTALATION

npm install @react-navigation/native --save
yarn add @react-navigation/native

### core dependencies

expo install react-native-gesture-handler react-native-reanimated react-native-screens react-native-safe-area-context @react-native-community/masked-view

### stack navigation
yarn add @react-navigation/stack

Example 2: react native nav bars

$ npm install react-native-navbar --save

Example 3: react native nav bars

const styles = {
  container: {
    flex: 1,
  },
};

const rightButtonConfig = {
  title: 'Next',
  handler: () => alert('hello!'),
};

const titleConfig = {
  title: 'Hello, world',
};

function ComponentWithNavigationBar() {
  return (
    <View style={styles.container}>
      <NavigationBar
        title={titleConfig}
        rightButton={rightButtonConfig}
      />
    </View>
  );
}