I'm in the following situation:
I have a TabBar with 2 Fragments (ProductFragment and CartFragment). Within the ProductFragment I have a ListView with an add button that fires, adds an item in a ListView inside the CartFragment, and also changes 3 different TextViews with the sums of values of that same datasource that loads the list.
How can I reload the CartFragment so I can change my data? At the moment, it only loads if I exit the TabBar and back. Even using the notifyDataSetChanged ();
There are Libs for this work but at the moment I do not remember the names, other two forms are with Intents and Intents filters or the simpler way I will illustrate below.
In the CartFragment class, create the notifyMudancaCarrinho method ();
public void notificarMudancaCarrinho(){
//aqui sua logica para dar o refresh
//ex:
adapter.notifyDataSetChanged();
}
In the Activity class, create the notifyMudancaCarrinho method ();
public void notificarMudancaCarrinho(){
carrinhoFragment.notificarMudancaCarrinho();
}
In the ProductFragment where you add the product in the cart simply add the following line.
((SuaActivity) getActivity()).notificarMudancaCarrinho();