React native power button long press listener when app is running in background

Question

I want to call a SOS function when user long press the power button. If there is no library to do this, is there any native method to do so?

Answer 1

You can use this library to run a code when the home button is pressed

react-native-home-pressed

You can change the keycode creating a fork of the repository

and, check the long press with a timer.

UPDATE:

You can use this library to get a keycode event of key up and key down event.

Example:

componentDidMount() {
    KeyEvent.onKeyDownListener((keyEvent) => {
        if (keyEvent.keyCode === 'Keycode of the power button'){
            this.timeout = setTimeout(() => {
                //Your SOS Function here
            }, 1000)
        }
    });

    KeyEvent.onKeyUpListener((keyEvent) => {
        if (keyEvent.keyCode === 'Keycode of the power button'){
            clearTimeout(this.timeout)
        }
    })
}

componentWillUnmount() {
    KeyEvent.removeKeyDownListener();
    KeyEvent.removeKeyUpListener();
}