I have a fragment that shows a Map, and in the app has a registration screen, the first fragment to be created is the Map, if the user wants to register will start another Fragment, after he signs up I want to return to the Fragment of Map without needing to instantiate it again.
Return to Fragment without having to re-create it
-1
asked by anonymous 11.03.2015 / 17:27
2 answers
1
If you are working with Fragments , then you have a manager for them, so in fact you only need to instantiate these Fragments and replace container as needed.
When creating your Activity , you can have these two next blocks, with the manager:
FragmentManager fragmentManager = getFragmentManager()
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
And the two Fragments :
CadastroFragment cadastro = new CadastroFragment();
MapaFragment mapa = new MapaFragment();
So just do the transaction when you need it. To register, for example:
fragmentTransaction.replace(R.id.fragment_container, cadastro);
fragmentTransaction.addToBackStack(null);
fragmentTransaction.commit();
11.03.2015 / 17:41
0
To solve this problem you can solve creating the fragment and adding it and do not put in any container doing:
public static final String FRAG_A_TAG="fragmentA";
FragmentManager mFragManager = getSupportFragmentManager();
FragmentTransaction mTransaction = mFragManager.beginTransaction();
//criar um fragment
FragmentA fragA= new FragmentA();
//adicionar o fragment pelo tag
mTransaction.add(fragA,FRAG_A_TAG).commit();
In this way the fragment was added but it was not placed in any container, at the time of reusing the fragment just do:
FragA = mFragManager.findFragmentByTag(FRAG_A_TAG);
And from here you can put the fragment in the container as it normally does.
11.03.2015 / 19:36