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Update React example to suggest useEffect listener and lifecycle #245

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Update React example to suggest useEffect listener and lifecycle #245

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25 changes: 18 additions & 7 deletions versioned_docs/version-v5/main/guides/deep-links.md
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Original file line number Diff line number Diff line change
Expand Up @@ -90,23 +90,34 @@ import { App, URLOpenListenerEvent } from '@capacitor/app';
Next, define the AppUrlListener component, listening for the `appUrlOpen` event then redirecting when a deep link is found:

```typescript
const AppUrlListener: React.FC<any> = () => {
let history = useHistory();
function AppUrlListener(): null {
const history = useHistory();

useEffect(() => {
App.addListener('appUrlOpen', (event: URLOpenListenerEvent) => {
const onAppUrlOpen = (event: URLOpenListenerEvent): void => {
// Example url: https://beerswift.app/tabs/tab2
// slug = /tabs/tab2
const slug = event.url.split('.app').pop();
const slug = event.url.split('.com').pop();
if (slug) {
history.push(slug);
navigate(slug);
}
// If no match, do nothing - let regular routing
// logic take over
};

App.addListener('appUrlOpen', onAppUrlOpen).catch((err) => {
console.log(err);
});
}, []);

return () => {
App.removeAllListeners().catch((err) => {
console.log(err);
});
};
}, [history]);

return null;
};
}

export default AppUrlListener;
```
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