React Navigation change Tab order programmatically - reactjs

Question

I'm creating an app with react-native with using react-navigation for routing. I know we can change tab order in react-navigation initially. But in my case, I need to change tab order programmatically. Is there any way to do that?

Answer 1

The following is an "almost pseudo code" example. It should at least drive you in the right direction. The trick is to use a "connected" main navigation component which reacts to changes in a redux store (in my case I stored the tabs order in a "settings" reducer) and force re-render of the tabs and their order, changing the screenProps property passed down by react-navigation to each navigator. Then there is a TabSelector component which returns the correct screen based on the props passed. I'm sorry if it's not totally clear what I mean but English is not my primary language :)
import Tab1 from 'app/components/Tab1';
import Tab2 from 'app/components/Tab2';
// ... all the imports for react-navigation
const TabSelector = (props) => {
switch(props.tab) {
case 1:
return <Tab1 {...props} />;
case 2:
return <Tab2 {...props} />;
}
};
const Tabs = {
PreferredTab: {
screen: ({ screenProps }) => (
<TabSelector tab={screenProps.firstTab} />
),
navigationOptions: ({ screenProps }) => ({
// write label and icon based on screenProps.firstTab
})
},
OtherTab: {
screen: ({ screenProps }) => (
<TabSelector tab={screenProps.otherTab} />
),
navigationOptions: ({ screenProps }) => ({
// write label and icon based on screenProps.otherTab
})
},
// other tabs...
};
const Navigator = createTabNavigator(Tabs, {
initialRouteName: 'PreferredTab',
// other options...
});
const WrappedNavigator = props => {
// fetch tab index from redux state, for example
const firstTab = useSelector(state => state.settings.firstTab);
const otherTab = useSelector(state => state.settings.otherTab);
return <Navigator screenProps={{ firstTab: firstTab, otherTab: otherTab }} {...props} />;
};
WrappedNavigator.router = Navigator.router;
export default createAppContainer(WrappedNavigator);