Android Fragment Back Press Without Any Data Loss

I am creating an application with navigation drawer when I click each navigation list new fragments will load. One of the fragment have listView. When I click this list load anothe

Solution 1:

I think this may help

Just Do PopBackStack from Fragmentmanager

FragmentManagerfm= getFragmentManager();
        for (inti=0; i < fm.getBackStackEntryCount(); i++) {
            fm.popBackStack();
        }

And In that Fragment

View mView ; //this will be global@Nullable@OverridepublicViewonCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        try {
            if (mView == null) {
                // view will be initialize for the first time .. you can out condition for that if data is not null then do not initialize view again. 
                mView = inflater.inflate(R.layout.xml,container, false);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }

        return mView;
    }

Solution 2:

publicvoidaddFragment( final Fragment newFragment, final Fragment hideFragment) {
    finalFragmentManagerfragmentManager= getFragmentManager();
    finalFragmentTransactionfragmentTransaction= fragmentManager.beginTransaction();
    fragmentTransaction.hide(hideFragment);
    fragmentTransaction.add(R.id.container, newFragment, newFragment.getClass().getSimpleName());
    fragmentTransaction.addToBackStack(hideFragment.getClass().getSimpleName());
    fragmentTransaction.commitAllowingStateLoss();
}

Use this instead of replacing fragment.will solve your problem.