How to Implement Press Back Again in Fragment to Exit in Android |on BackPressed in Fragment
Back Press in Android Fragment to Exit in Android?
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The ‘Back’ button on Android devices has various uses across different apps. Some app developers use it to close their apps, while others use it to navigate back to the app’s previous screen or activity. Many apps ask users to press the ‘Back’ button twice within a short time interval to close the app, or they display a custom dialog asking the user to confirm before exiting. This is considered a best practice to prevent accidental exits.
Here’s how to handle the ‘Back’ button with a double-press exit and a confirmation dialog in both an Activity and a Fragment:
BackPress handling in method in Android Fragments
public void onAttach(Context context) {
super.onAttach(context);
OnBackPressedCallback callback = new OnBackPressedCallback(true) {
@Override
public void handleOnBackPressed() {
AppDelegate.showToast(context, "Back Button Pressed!!");
}
};
requireActivity().getOnBackPressedDispatcher().addCallback(this, callback);
}
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