close activity settings apps from another app

The problem is that I want to restrict the access to the desistalacion of an app, when the user goes into configuration-> application-> app, mediately displays an activity requesting passwors with two buttons, check and cancel, the objective is that when I press cancel the activity and the setting application activity, this is the code I use but only the password activity closes.

        cerrar.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            Intent startMain = new Intent(Intent.ACTION_MAIN);
            startMain.addCategory(Intent.CATEGORY_HOME);
            startMain.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
            startActivity(startMain);
            finish();
        }
    });