小賴的實戰記錄

 

替換目前Fragment

                FragmentManager fragmentManger =  getFragmentManager();
                final  FragmentTransaction fragmentTransaction = fragmentManger.beginTransaction();
                fragmentTransaction.replace(R.id.content_frame, fragment);
                fragmentTransaction.addToBackStack(fragment.getClass().getName());
                fragmentTransaction.commit();

 

按Back鍵時，回上個Fragment，實作在Activity

    @Override
    public void onBackPressed() {
        int count = getFragmentManager().getBackStackEntryCount();

        if (count == 0) {
            super.onBackPressed();
        } else {
            getFragmentManager().popBackStack();
        }
    }