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Version: 1.x

Screen tracking

This example shows how to do screen tracking and send to Google Analytics. The approach can be adapted to any other analytics SDK.

When using built-in navigation container, we can use onNavigationStateChange to track the screen.

import { GoogleAnalyticsTracker } from 'react-native-google-analytics-bridge';

const tracker = new GoogleAnalyticsTracker(GA_TRACKING_ID);

// gets the current screen from navigation state
function getCurrentRouteName(navigationState) {
if (!navigationState) {
return null;
}
const route = navigationState.routes[navigationState.index];
// dive into nested navigators
if (route.routes) {
return getCurrentRouteName(route);
}
return route.routeName;
}

const AppNavigator = StackNavigator(AppRouteConfigs);

export default () => (
<AppNavigator
onNavigationStateChange={(prevState, currentState) => {
const currentScreen = getCurrentRouteName(currentState);
const prevScreen = getCurrentRouteName(prevState);

if (prevScreen !== currentScreen) {
// the line below uses the Google Analytics tracker
// change the tracker here to use other Mobile analytics SDK.
tracker.trackScreenView(currentScreen);
}
}}
/>
);

Screen tracking with Redux

When using Redux, we can write a Redux middleware to track the screen. For this purpose, we will reuse getCurrentRouteName from the previous section.

import { NavigationActions } from 'react-navigation';
import { GoogleAnalyticsTracker } from 'react-native-google-analytics-bridge';

const tracker = new GoogleAnalyticsTracker(GA_TRACKING_ID);

const screenTracking =
({ getState }) =>
(next) =>
(action) => {
if (
action.type !== NavigationActions.NAVIGATE &&
action.type !== NavigationActions.BACK
) {
return next(action);
}

const currentScreen = getCurrentRouteName(getState().navigation);
const result = next(action);
const nextScreen = getCurrentRouteName(getState().navigation);
if (nextScreen !== currentScreen) {
// the line below uses the Google Analytics tracker
// change the tracker here to use other Mobile analytics SDK.
tracker.trackScreenView(nextScreen);
}
return result;
};

export default screenTracking;

Create Redux store and apply the above middleware

The screenTracking middleware can be applied to the store during its creation. See Redux Integration for details.

const store = createStore(
combineReducers({
navigation: navigationReducer,
...
}),
applyMiddleware(
screenTracking,
...
),
);