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@ivanstnsk
Created July 22, 2020 10:15
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Save ivanstnsk/4525294c1fb7ada32dbf8bcccf9676ad to your computer and use it in GitHub Desktop.
use Android Back navigation effect hook React Native in Typescript
import { useCallback } from 'react';
import { BackHandler } from 'react-native';
import { useFocusEffect } from '@react-navigation/native';
export const useAndroidBackNavigationEffect = (callback: any): void => {
useFocusEffect(
useCallback(() => {
const onBackPress = () => {
if (callback) {
callback();
}
return true;
};
BackHandler.addEventListener('hardwareBackPress', onBackPress);
return () => BackHandler.removeEventListener('hardwareBackPress', onBackPress);
}, []),
);
};
// Example of usage
// const printMessage = () => console.log('back button pressed');
// useAndroidBackNavigationEffect(printMessage);
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