Question

I am looking to alert the user if they hit the back button while in the application.. for instance, if the user is half way through using the application and they hit the back arrow, right now it just closes and they would lose all data if they accidentally hit it.

I would like to be able to alert the user with “Do you really want to exit?” so that if it was accidental, they can choose no and continue, and not lose any data.

I’m guessing I will need to implement some sort of listener??

Answer 1

Override onbackpressed() something like…

    @Override
    public void onBackPressed() {
        AlertDialog.Builder builder = new AlertDialog.Builder(YourActivity.this);
        builder.setMessage("Do you really want to exit?.").setCancelable(
                false).setPositiveButton("Quit",
                        new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                                            YourActivity.this.finish();

                    }
                }).setNegativeButton("Cancel",
                        new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {

                    }
                });
        AlertDialog alert = builder.create();
        alert.show();

    }