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Shadow
9 سال پیش
با سلام دوستان من می خوام لیست بی پایان بسازم یه مقداری از راه رو رفتم ولی نمی دونم درسته یا نه لطفا راهنمایی کنید؟! من کدها ر می زارم :
getComment();
recyclerView.addOnScrollListener(new EndlessRecyclerOnScrollListener(linearLayoutManager) {
@Override
public void onLoadMore(int current_page) {
int lastFirstVisiblePosition = ((LinearLayoutManager) recyclerView.getLayoutManager()).findFirstVisibleItemPosition();
((LinearLayoutManager) recyclerView.getLayoutManager()).scrollToPosition(lastFirstVisiblePosition);
loadMore();
}
});
public void getComment() {
counter = 0;
G.apiService.getListComment(new ApiService.onCommentReceived() {
@Override
public void onReceived(List<Comment> comments) {
adapterComment = new AdapterComment(comments);
recyclerView.setAdapter(adapterComment);
recyclerView.setLayoutManager(linearLayoutManager);
}
}, id);
}
public void loadMore(){
counter = counter + 20;
G.apiService.getListComment(new ApiService.onCommentReceived() {
@Override
public void onReceived(List<Comment> comments) {
adapterComment = new AdapterComment(comments);
recyclerView.setAdapter(adapterComment);
recyclerView.setLayoutManager(linearLayoutManager);
}
}, id);
}
public abstract class EndlessRecyclerOnScrollListener extends RecyclerView.OnScrollListener {
public static String TAG = EndlessRecyclerOnScrollListener.class.getSimpleName();
private int previousTotal = 0; // The total number of items in the dataset after the last load
private boolean loading = true; // True if we are still waiting for the last set of data to load.
private int visibleThreshold = 5; // The minimum amount of items to have below your current scroll position before loading more.
int firstVisibleItem, visibleItemCount, totalItemCount;
private int current_page = 1;
private LinearLayoutManager mLinearLayoutManager;
public EndlessRecyclerOnScrollListener(LinearLayoutManager linearLayoutManager) {
this.mLinearLayoutManager = linearLayoutManager;
}
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
visibleItemCount = recyclerView.getChildCount();
totalItemCount = mLinearLayoutManager.getItemCount();
firstVisibleItem = mLinearLayoutManager.findFirstVisibleItemPosition();
if (loading) {
if (totalItemCount > previousTotal) {
loading = false;
previousTotal = totalItemCount;
}
}
if (!loading && (totalItemCount - visibleItemCount)
<= (firstVisibleItem + visibleThreshold)) {
// End has been reached
// Do something
current_page++;
onLoadMore(current_page);
loading = true;
}
}
public abstract void onLoadMore(int current_page);
}
من هر بار که اجرا می کنم دوباره همونای قبلی رو از سرور می گیره!!!!!
Shadow
9 سال پیش
خوب تا اینجا پیش رفتم و درست کار می کنه ولی دوتا مشکل داره اونم اینکه :
1 - ریسایکلر توی همه آیتم هاش فقط یه چیز رو نشون میده
2- وقتی از اکتیویتی خارج می شم و دوباره شروع می کنم هیچی نشون نمیده
کدها رو می زارم لطفا راهنمایی کنید؟!
public class ApiService {
int counter=0;
public ApiService() {
}
AdapterComment adapterComment;
List<Comment> comments = new ArrayList<>();
public void getListComment(final onCommentReceived onCommentReceived, int id, final RecyclerView recyclerView) {
Map<String, String> map = new HashMap<>();
final VolleyRequestHelper helper = new VolleyRequestHelper(Request.Method.POST, G.URL_ADDRESS2+counter, map, new Response.Listener<String>() {
@Override
public void onResponse(String response) {
counter++;
try {
JSONObject jsonObject = new JSONObject(response);
JSONArray jsonArray = jsonObject.getJSONArray("response");
for (int i = 0; i < jsonArray.length(); i++) {
Comment comment = new Comment();
JSONObject jsonObjec = (JSONObject) jsonArray.get(i);
//int id = jsonObjec.getInt("id");
String name = jsonObjec.getString("name");
String body = jsonObjec.getString("body");
comment.setName(name);
comment.setBody(body);
if(comments.size()>0){
adapterComment.setData(comments);
adapterComment.notifyDataSetChanged();
recyclerView.setAdapter(adapterComment);
}else {
adapterComment = new AdapterComment();
comments=new ArrayList<>();
comments.add(comment);
}
}
onCommentReceived.onReceived(comments);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
Volley.newRequestQueue(G.context).add(helper);
}
public class AdapterComment extends RecyclerView.Adapter<AdapterComment.CommentViewHolder> {
private List<Comment> comments = new ArrayList<>();
Comment comment;
public AdapterComment(){
}
public void setData(List<Comment> comments){
this.comments.addAll(comments);
notifyDataSetChanged();
}
InfiniteScrollProvider infiniteScrollProvider = new InfiniteScrollProvider();
infiniteScrollProvider.attach(recyclerView, new OnLoadMoreListener() {
@Override
public void onLoadMore() {
counter += 1;
progressBar.setVisibility(View.VISIBLE);
getComment();
//progressBar.setVisibility(View.GONE);
}
});
public void getComment() {
G.apiService.getListComment(new ApiService.onCommentReceived() {
@Override
public void onReceived(List<Comment> comments) {
}
}, id, recyclerView);
}
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