notifydatasetchanged

问题 I want to disply list of items using Custom ArrayAdapter . I will insert data by clicking a button. MainFragment.java @Override public void onClick(View v) { DatabaseClass feed = new DatabaseClass(getActivity()); new DatabaseClass(getActivity()).getList(); new MyFragment().updateList(); } My layout file is as follows. main.xml <LinearLayout android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <fragment android:id="@+id/update" android:name=

问题 I am trying to follow a set of statements after the execution of notifyDataSetChanged on a recyclerview. But when I am debugging my application, the debugger reaches the next few lines after my notifyDataSetChanged before going to the onBindViewHolder of the recyclerview's adapter. So my question is- Is the notifyDataSetChanged an asynchronous call? If yes do we get a callback? PS: I have already googled this answer and I couldn't find a suitable answer that's why I am asking the community.

问题 I am trying to follow a set of statements after the execution of notifyDataSetChanged on a recyclerview. But when I am debugging my application, the debugger reaches the next few lines after my notifyDataSetChanged before going to the onBindViewHolder of the recyclerview's adapter. So my question is- Is the notifyDataSetChanged an asynchronous call? If yes do we get a callback? PS: I have already googled this answer and I couldn't find a suitable answer that's why I am asking the community.

问题 I'm trying to create a ListView with a list of downloading tasks. The downloading tasks are managed in a Service (DownloadService). Everytime a chunk of data is received, the task sends the progress via a Broadcast , received by the Fragment containing the ListView (SavedShowListFragment). On receiving the Broadcast message, the SavedShowListFragment updates the progress of the downloading tasks in the adapter and triggers notifyDataSetChanged() . Every row in the list contains a ProgressBar

问题 When I repopulate my ListView , I call a specific method from my Adapter . Problem : When I call updateReceiptsList from my Adapter , the data is refreshed, but my ListView doesn't reflect the change. Question : Why doesn't my ListView show the new data when I call notifyDataSetChanged ? Adapter : public class ReceiptListAdapter extends BaseAdapter { public List<Receipt> receiptlist; private Context context; private LayoutInflater inflater; private DateHelpers dateH; public ReceiptListAdapter

问题 Can I notify the adapter to change the query? As now it does nothing... anyone? 05-28 17:04:07.358 15585-15674/com.example.rasmusjosefsson.rjcar D/OpenGLRenderer: endAllStagingAnimators on 0x7ff46e405c00 (ListPopupWindow$DropDownListView) with handle 0x7ff46f3d1b00 onCreate() private DatabaseReference mUserRef; private String mTravelTypeSelected; private Query queryRefSelected; private FirebaseRecyclerAdapter<MyWaypoint, LatLngViewHolder> mFirebaseRecyclerViewAdapter; @Override protected void

问题 Hi i have an issue where only 1 result is being shown when i call a notifydataSetChanged function. I have read in this forum that the Array list needs to be cleared, then the data needs to be added for the notifydataSetChanged to work properly. I have followed that, but the problem is when the new data arrives it clears all the other data and only shows the latest item from the list. I know its a clear() issue, but i cant work out how to fix it. Any suggestions would be gratefully appreciated

问题 This question is very similar to many other questions on StackOverflow, but I think it merits its own post due to a difference in approach compared to other questions here. I have a custom adapter that extends CursorAdapter . I'm updating the data and calling notifyChange on the appropriate URI in order to refresh the cursor. In debugging, I can see that this is working properly. Unfortunately, my list views are not being recreated. The reason that I need them to be recreated is because of my

问题 I know that this question is asked many times but i can't seem to make it work in my app I create custom adapter that extends BaseAdapter, and inside it I put listener of drag and drop function to rearrange the order of the items on the list. so I need to call notifydatasetchanged when drop action is performed, and I did, but don't seem to reorder the data even though when I print out the data to LogCat is already sorted the way I want it. I try recommendation like using asyncTask, Activity

问题 I have RecyclerView, single row includes text, image. After loading data, in a button click i want to change text without reloading image of the row. I tried using notifyItemChanged(position). But it makes image reloading.. Am using glide for loading images, so when i use notifyItemChanged(position), row flickering occurs 回答1: Whole row will be reloaded once you call notifyItemChanged() Two options: 1) Disable default recyclerview item animation ItemAnimator animator = recyclerView