Where do we need to put the code

[bondanherumurti]

So where do we need to put the code

var Analytics = require('react-native-firebase-analytics');

componentWillMount() {
  if (environment === 'staging') {
    Analytics.setEnabled(false);
  }

  Analytics.setUserId('11111');
  Analytics.setUserProperty('propertyName', 'propertyValue');

  Analytics.logEvent('view_item', {
    'item_id': 'login'
  });

}

on every screen.js / index.ios.js ? and what is UserID? is that custom property or property defined from Google?

[alexHlebnikov]

You need to add it onlue in your App.js (or something) - in your root component.

[alexHlebnikov]

UersID is the same thing as Device ID, you can get it with this package https://github.com/rebeccahughes/react-native-device-info

[evollu]

looks like solved