How to exit the activity in android in this case?-CodePudding

I'm creating a quiz app with SQL and Firebase. First screens are SignUp/in activities, and after user is signed he is redirected to a splash screen which automatically navigates to PlayActivity. In play activity I wanted to handle the onBackPressedMethod, so that the user will close the game with the following code:

@Override public void onBackPressed() {

    if (backPressedTime   2000 > System.currentTimeMillis()) {
        new AlertDialog.Builder(this)
                .setTitle("Do you  want to exit?")
                .setNegativeButton("No", null)
                .setPositiveButton("Yes", (dialog, which) -> {

                    setResult(RESULT_OK, new Intent().putExtra("Exit", true));
                    System.exit(0);
                }).create().show();

    }else  {

        Toast.makeText(this, "Press Again to Exit", Toast.LENGTH_SHORT).show();
    }
    backPressedTime = System.currentTimeMillis();
}

The problem is, that after pressing the Yes button in the alert dialog, user is redirected to a previous SignUp activity, instead of exiting the game? How can I fix this?

CodePudding user response：

You need to call finishAffinity() in your SignUpActivity before you navigate to PlayActivity. This will remove the first Activity (and any below it) from the stack.