android-recyclerview

问题 I am trying to load a map into RecyclerAdapter to use the values to populate recyclerView but in valueEventlistener the values are getting loaded into the map but adapter is not getting notified of these changes. I tried checking the size of map it is showing the values correctly but when i checked the getitemcount() inside adapter it is zero. private Map<String, OrderItem> convoModels = new HashMap<>(); protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState);

问题 I have this working perfectly with a ListView, but decided to update my code to use RecyclerView. I see there is no default implementation, and the responses to similar questions are quite old. Is using a sort of cursor the best way to go, or is there a better option? These are my code snippets for a working RecyclerView with hard-coded values: MainActivity recyclerView = (RecyclerView)findViewById(R.id.recycler_view); mLayoutmanager = new LinearLayoutManager(this); recyclerView

问题 public class RecyclerAdapter extends RecyclerView.Adapter<RecyclerViewHolder> { String [] name={ "Androidwarriors","Stackoverflow","Developer Android","AndroidHive","Slidenerd","TheNewBoston","Truiton","HmkCode","JavaTpoint","Javapeper"}; Context context; LayoutInflater inflater; public Recy clerAdapter(Context context) { this.context=context; inflater=LayoutInflater.from(context); } @Override public RecyclerViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View v=inflater

问题 I am trying to list text and images in a list format in the recyclerview and display in each row this my code and I know its wrong cause its only showing one row how must I edit the code. Still learning java ArrayList<DataList> dataList = new ArrayList<DataList>(); for (int i = 0; i < 1; i ++ ) { dataList.add(new DataList( "France", "Russia", R.drawable.lt1, "America", "Europe", R.drawable.lt2 )); } ArrayList<DataList2> dataList2 = new ArrayList<DataList2>(); for (int i = 0; i < 1; i ++ ) {

问题 I want to get list of images which I uploaded manually in web Firebase console. Is there any way I can get list of all files without using FirebaseRecyclerAdapter? 回答1: There is no existing method to extract the list of file name you have saved in Firestore. Instead you have to use some workaround to manually create a list. For example, maintaining a list of file and URL inside Firebase database. One possible solution is to write a trigger using cloud functions, listening to the changes made

问题 I'm using sectioned RecycleView library from here : https://github.com/luizgrp/SectionedRecyclerViewAdapter but what I try to do is when select some multi check box from section 1 and section two and hit remove button , the sectionAdapter.notifyItemRemoved(key); dose not do anything . the view or row is the same , it should be updated and remove the selected row what is the best implementation for this case to use? remove function code: private void getDishesIngredientsShoppingList() {

问题 I am using recyclerview with gridlayoutmanger with spancount 2 containing fixed 12 elements only in recyclerview .On tablets in landscape mode the empty space is remaining after the sixth element. I want to fill the empty space with the elements from second row. If space is there than then first row contain either 6, 7, 8 ,9 ... elements depends upon the remaining space. 回答1: Use FlexLayoutManger with recycler view : RecyclerView recyclerView = (RecyclerView) context.findViewById(R.id

问题 Closed. This question is off-topic. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed last year . * EASY PART * At the moment I have set up a CardView inside a RecyclerView. What i need to do is to change the color of the 2nd cardview to yellow, and the 3rd cardview to red (At the moment they are all green). Also i want the first cardview to remain green. * HARD PART * What i also need, is to be able to switch

问题 is it possible that when recyclerview load items just load one time and dont reload scrolling? I want to load all data before loading it to my recyclerView. 回答1: You can absolutely do that. Load all the data (through a web service call or by any other means). When data are retrieved, set them to the RecyclerView 's adapter and call notifyDatasetChanged() ). Use the RecyclerView normally (i.e. binding data objects to the views in onBindViewHolder() . This way you will get what you want (having

问题 I have created a simple Custom dialog class and I want to display it after clicking on a row in RecycleView . My dialog class looks: public class AddToQueueDialog extends Dialog implements View.OnClickListener { Activity mActivity; private TextView textView1; private TextView textView2; private Button save; public AddToQueueDialog(Activity activity){ super(activity); mActivity = activity; } @Override protected void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate