Passing Parameters
Passing data between screens is a common requirement, such as sending a product ID from a list screen to a details screen. React Navigation handles this using route parameters.
Passing Parameters to a Screen
Reading Parameters in the Destination Screen
Setting Initial Parameters
The initialParams prop on a Stack.Screen allows defining default parameters when a screen is first loaded, before any navigation action explicitly passes values.
Updating Parameters on the Current Screen
The setParams method allows updating the parameters of the currently active screen without triggering a new navigation action.
Passing Parameters Back to a Previous Screen
To send data back from a screen to its previous screen, developers often pass a callback function as a parameter or use setParams combined with a listener on the previous screen.
Type Safety with TypeScript
When using TypeScript, defining a param list type for your navigator helps catch parameter mismatches during development rather than at runtime.
Conclusion
Passing parameters through React Navigation allows screens to communicate effectively, enabling dynamic content such as product details, user profiles, or search results to be displayed based on data passed during navigation.
