Мне нужно отобразить 100 данных в режиме рециркуляции.поэтому я хочу реализовать нагрузку больше, чтобы сделать ее эффективной.когда я пытался скомпилировать код, индикатор выполнения не работает и оставляет большое пространство внизу.и он просто загрузил 20 данных, не все из них.
это код моего адаптера
class LoadingViewHolder extends RecyclerView.ViewHolder{
public ProgressBar progressBar;
public LoadingViewHolder(@NonNull View itemView) {
super(itemView);
progressBar=(ProgressBar) itemView.findViewById(R.id.loadmore);
}
}
class herbalViewHolder extends RecyclerView.ViewHolder{
TextView namaHerbal,khasiatHerbal;
ImageView thumbnail;
public herbalViewHolder(@NonNull View itemView) {
super(itemView);
namaHerbal = itemView.findViewById(R.id.nama_herbal);
khasiatHerbal = itemView.findViewById(R.id.khasiat_herbal);
thumbnail = itemView.findViewById(R.id.gambar_herbal);
}
}
public class herbalAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>{
private final int VIEW_TYPE_ITEM=0,VIEW_TYPE_LOADING=1;
private loadMore loadMore;
boolean isLoading;
private Context mCtx;
List<herbalModel> herbalModelList;
int visibleThreshold=5;
int lastVisibleItem,totalItemCount;
public herbalAdapter(RecyclerView recyclerView,Context mCtx, List<herbalModel> herbalModelList) {
this.mCtx = mCtx;
this.herbalModelList = herbalModelList;
final LinearLayoutManager linearLayoutManager = (LinearLayoutManager)recyclerView.getLayoutManager();
recyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
@Override
public void onScrolled(@NonNull RecyclerView recyclerView, int dx, int dy) {
super.onScrolled(recyclerView, dx, dy);
totalItemCount = linearLayoutManager.getItemCount();
lastVisibleItem = linearLayoutManager.findLastVisibleItemPosition();
if (!isLoading && totalItemCount <= (lastVisibleItem+visibleThreshold))
{
if (loadMore != null)
loadMore.onLoadMore();
isLoading=true;
}
}
});
}
@Override
public int getItemViewType(int position) {
return herbalModelList.get(position) == null ? VIEW_TYPE_LOADING:VIEW_TYPE_ITEM;
}
public void setLoadMore(loadMore loadMore) {
this.loadMore = loadMore;
}
@NonNull
@Override
public RecyclerView.ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int i) {
if(i == VIEW_TYPE_ITEM)
{
CardView v = (CardView) LayoutInflater.from(parent.getContext())
.inflate(R.layout.cardview_herbal, parent,false);
// View view =inflater.inflate(R.layout.cardview_herbal,null);
return new herbalViewHolder(v);
}
else if(i == VIEW_TYPE_LOADING)
{
View view = LayoutInflater.from(mCtx).inflate(R.layout.item_loading,parent,false);
return new LoadingViewHolder(view);
}
return null;
}
@Override
public void onBindViewHolder(@NonNull RecyclerView.ViewHolder viewHolder, int i) {
if (viewHolder instanceof herbalViewHolder)
{
herbalModel detailherbal =herbalModelList.get(i);
herbalViewHolder herbalViewHolder = (herbalViewHolder) viewHolder;
herbalViewHolder.namaHerbal.setText(detailherbal.getNama());
herbalViewHolder.khasiatHerbal.setText(detailherbal.getKhasiat());
Glide.with(mCtx)
.load(detailherbal.getThumbnail())
.into(herbalViewHolder.thumbnail);
final String idHerbal =detailherbal.getId();
herbalViewHolder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent i = new Intent(mCtx, detailHerbal.class);
i.putExtra("idHerbal", idHerbal);
mCtx.startActivity(i);
}
});
}
else if(viewHolder instanceof LoadingViewHolder)
{
LoadingViewHolder loadingViewHolder = (LoadingViewHolder) viewHolder;
loadingViewHolder.progressBar.setIndeterminate(true);
}
}
@Override
public int getItemCount() {
return herbalModelList.size();
}
public void setLoaded() {
isLoading = false;
}
public void filterlist (ArrayList<herbalModel> filteredList)
{
herbalModelList =filteredList;
notifyDataSetChanged();
}
}
это основная деятельность для отображения переработчика
private void get10Data() {
String url ="https://jsonplaceholder.typicode.com/photos";
JsonArrayRequest request = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray jsonArray) {
Log.d(TAG,"Onresponse"+jsonArray.toString());
for(int i = 0; i < 10; i++) {
try {
JSONObject jsonObject = jsonArray.getJSONObject(i);
Log.d(TAG,"jsonobject"+jsonObject);
herbalModels.add(
new herbalModel(
jsonObject.getString("title"),
"Khasiat",
jsonObject.getString("albumId"),
jsonObject.getString("id"),
jsonObject.getString("thumbnailUrl")
)
);
}
catch(JSONException e) {
}
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
Log.d(TAG,"Onerror"+volleyError.toString());
}
});
MySingleton.getInstance(getActivity()).addToRequestQueue(request);
}
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View rootView = inflater.inflate(R.layout.fragment_herbal, container, false);
herbalModels = new ArrayList<>();
RequestQueue queue = MySingleton.getInstance(this.getActivity().getApplicationContext()).getRequestQueue();
get10Data();
sortData(rootView);
StartRecyclerView(rootView);
return rootView ;
}
private void StartRecyclerView(View rootView) {
recyclerView = (RecyclerView) rootView.findViewById(R.id.recyclerview_herbal);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
adapter = new herbalAdapter(recyclerView,getActivity(),herbalModels);
recyclerView.setAdapter(adapter);
//set loaded more event
adapter.setLoadMore(new loadMore() {
@Override
public void onLoadMore() {
if (herbalModels.size() <= 20)
{
herbalModels.add(null);
adapter.notifyItemInserted(herbalModels.size()-1);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
herbalModels.remove(herbalModels.size()-1);
adapter.notifyItemRemoved(herbalModels.size());
final int index = herbalModels.size();
final int end = index+10;
String url ="https://jsonplaceholder.typicode.com/photos";
JsonArrayRequest request = new JsonArrayRequest(url,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray jsonArray) {
Log.d(TAG,"Onresponse"+jsonArray.toString());
for(int i = index; i < end; i++) {
try {
JSONObject jsonObject = jsonArray.getJSONObject(i);
Log.d(TAG,"jsonobject"+jsonObject);
herbalModels.add(
new herbalModel(
jsonObject.getString("title"),
"Khasiat",
jsonObject.getString("albumId"),
jsonObject.getString("id"),
jsonObject.getString("thumbnailUrl")
)
);
}
catch(JSONException e) {
}
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError volleyError) {
Log.d(TAG,"Onerror"+volleyError.toString());
}
});
MySingleton.getInstance(getActivity()).addToRequestQueue(request);
adapter.notifyDataSetChanged();
adapter.setLoaded();
}
},5000);
}
}
});
}