How to close Android application?

Question

I want to close my application, so that it no longer runs in the background.

How to do that? Is this good practice on Android platform?

If I rely on the \"ba

Answer 1

Simply write the following code in onBackPressed:

@Override
public void onBackPressed() {
    // super.onBackPressed();

    //Creating an alert dialog to logout
    AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(this);
    alertDialogBuilder.setMessage("Do you want to Exit?");
    alertDialogBuilder.setPositiveButton("Yes",
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface arg0, int arg1) {
                    Intent intent = new Intent(Intent.ACTION_MAIN);
                    intent.addCategory(Intent.CATEGORY_HOME);
                    startActivity(intent);
                }
            });

    alertDialogBuilder.setNegativeButton("No",
            new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface arg0, int arg1) {

                }
            });

    //Showing the alert dialog
    AlertDialog alertDialog = alertDialogBuilder.create();
    alertDialog.show();
}