listadapter

问题 I have a very simple Firebase Database which looks like this: This is my model: public class ShoppingListModel { private String shoppingListName; private Map<String, String> usersMap; public ShoppingListModel() {} public void setShoppingListName(String shoppingListName) {this.shoppingListName = shoppingListName;} public String getShoppingListName() {return shoppingListName;} public void setUsersMap(Map<String, String> usersMap) {this.usersMap = usersMap;} public Map<String, String>

问题 I have an issue with my RecyclerView and ListAdapter. Through an API, I receive items in a ascending order from older to newer. My list is then being refreshed by calling the submitList(items) method. However, since everything is asynchronous, after receiving the first item, the RecyclerView remains on the position of the first item received and showed. Since in the ListAdapter class there is no callback when the submitList() method completed, I cannot find a way to scroll after the updates

问题 i am using a BaseExpandableListAdapter as follows. where instead of passing a list, i am directly passing a View to be a child data. and the child count is always returned as 1. as there is only one view per heading. public class TaxAdapter extends BaseExpandableListAdapter{ private Context _context; private ArrayList<String> _listDataHeader; private HashMap<String, View> _listDataChild; public TaxAdapter(Context context, ArrayList<String> taxListDataHeader, HashMap<String, View>

问题 i am using a BaseExpandableListAdapter as follows. where instead of passing a list, i am directly passing a View to be a child data. and the child count is always returned as 1. as there is only one view per heading. public class TaxAdapter extends BaseExpandableListAdapter{ private Context _context; private ArrayList<String> _listDataHeader; private HashMap<String, View> _listDataChild; public TaxAdapter(Context context, ArrayList<String> taxListDataHeader, HashMap<String, View>

问题 While using a ListAdapter I noticed that after updating an item the DiffUtil.ItemCallback areContentsTheSame() method was always returning true. Debugging the code I realized that the old and the new item were exactly the same (the old state disappeared). Therefore the ListAdapter onBindViewHolder() method wasn't being called to update the respective row on the list (only the order of the items changed with a nice animation). Checking other questions on Stackoverflow looks like it's a common

问题 While using a ListAdapter I noticed that after updating an item the DiffUtil.ItemCallback areContentsTheSame() method was always returning true. Debugging the code I realized that the old and the new item were exactly the same (the old state disappeared). Therefore the ListAdapter onBindViewHolder() method wasn't being called to update the respective row on the list (only the order of the items changed with a nice animation). Checking other questions on Stackoverflow looks like it's a common

问题 I have a ListAdapter as shown below: setListAdapter(new ArrayAdapter<String>(DeleteMenu.this, android.R.layout.simple_list_item_1, classes)); I am trying to call notifyDataSetChanged() on it within an onListItemClick() function. I've tried a few different ways and looked at similar questions here on StackOverFlow but I still can't figure it out. Can someone please help? Edit: I should be more clear, I'm not getting an error, I simply don't know what to call the function notifyDataSetChanged()

问题 I have a ListAdapter as shown below: setListAdapter(new ArrayAdapter<String>(DeleteMenu.this, android.R.layout.simple_list_item_1, classes)); I am trying to call notifyDataSetChanged() on it within an onListItemClick() function. I've tried a few different ways and looked at similar questions here on StackOverFlow but I still can't figure it out. Can someone please help? Edit: I should be more clear, I'm not getting an error, I simply don't know what to call the function notifyDataSetChanged()

问题 I need to make a ListAdapter that presents data from multiple ContentProviders. The ContentProviders themselves represent one table each from relational database. I want to use the CursorLoader system to retrieve aggregate data into ListView. Is this possible to do with 1 loader or do I need to use multiple loaders? I'd prefer to use one. I'm not sure how I can have 2 ContentProviders interact with each other beyond doing the join manually in code which doesn't seem like a great option either

问题 I need to make a ListAdapter that presents data from multiple ContentProviders. The ContentProviders themselves represent one table each from relational database. I want to use the CursorLoader system to retrieve aggregate data into ListView. Is this possible to do with 1 loader or do I need to use multiple loaders? I'd prefer to use one. I'm not sure how I can have 2 ContentProviders interact with each other beyond doing the join manually in code which doesn't seem like a great option either