Detect Hardware back button presses in Android

suggest change

BackAndroid.addEventListener('hardwareBackPress', function() {
    if (!this.onMainScreen()) {
        this.goBack();
        return true;
    }
    return false;
});

Note: this.onMainScreen() and this.goBack() are not built in functions, you also need to implement those. (https://github.com/immidi/react-native/commit/ed7e0fb31d842c63e8b8dc77ce795fac86e0f712)

Found a mistake? Have a question or improvement idea? Let me know.

Android - Hardware back button:

*Android - Hardware Back Button

*Detect Hardware back button presses in Android

*Example of BackAndroid along with Navigator

*Example of Hardware back button detection using BackHandler

*Hardware back button handling using BackHandler and Navigation Properties without using deprecated BackAndroid deprecated Navigator

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