Source : Handling Android Back Button Press in React Native
In this tutorial we are going to discuss how to make the App Quit When Hardware Back Button is pressed in React Native application. Unlike in iOS devices, Android devices have hardware back button which is used to navigate through previous screens. Sometimes, you may need to make the app quit when the back button is pressed. Hardware back button is a most important part of every android mobile phone. Back button gives us the functionality to going back in previous activity without any customization in application. If we would on the main home page activity screen then by default pressing back button would exit us from the app. In react native we can modify the android’s hardware back button behavior and override it according to our requirement.
Handling Android Back Button Press in React Native
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