NotifyDataSetChanged在不同的片段上

Question

I'm using a Master / Detail flow (not the default one), so I have one fragment that contains the stuff of the RecyclerView and when I click on a item I see on other fragment the detail of that item, it works, but now I want to delete this item from the detail fragment, and when I click on delete it refreshes and then notifydatasetchanged.

What's the problem? I have the Adapter on my ListFragment and on my DetailFragment I only can delete the item from my SQLite nothing else, I'd like to refresh the list.

Activity -- Where I create the listFragment

Fragment1 -- ListFragment (RecyclerView, Adapter, Sqlite(For fetch products))

Fragment2 -- DetailFragment (Sqlite(to delete item))

Activity

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity);
    if(savedInstanceState == null){
        Fragment list = new ListFragment();
        FragmentManager fragmentManager = getSupportFragmentManager();
        fragmentManager.beginTransaction().add(R.id.list,list).commit();
    }
}

On my ListFragment I have those attributes

private SQLiteAdapter sqliteAdapter;
private Context mContext;
private Adapter adapter;
private RecyclerView recyclerView;
private List<Product> data;

Then I put the data with a method that open the sqliteAdapter and then fetch all products and then closses the connection.

On my DetailFragment I have the SQLite object to get the product sent from the adapter (id product) and then show info about this product. Now I can delete an object, but it's not refreshing from ListFragment, I'm wondering where to put this SQLite object on Activity or in both fragments is ok

Answer 1

It sounds like you are only deleting the item from your database. You also need to delete it from the adapter's list or other data structure.