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私はサーバーからデータを取得して表示するためにvolleyライブラリを使用しているアプリケーションを開発しています...ここでは、タブ。データはrecyclerviewには表示されませんが、電源を切ってから電源を入れた後にデータリストが表示されます
問題は、サーバーからデータを取得して表示する要素のリストを最初に実行すると、データがロードされてリストに追加されますが、RecyclerViewには表示されません。ディスプレイを消して戻すとデータが表示されますRecyclerView
誰かお手伝いしてください。
はここMyAdapter.java
public class MyAdapter extends RecyclerView.Adapter<MyAdapter.ViewHolder> {
private ImageLoader mImageLoader;
private Context context;
ArrayList<Coupon> couponArrayList = new ArrayList<>();
public MyAdapter(Context context,ArrayList<Coupon> couponArrayList)
{
this.couponArrayList=couponArrayList;
this.context=context;
}
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
final View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.offer_row,parent,false);
ViewHolder viewHolder = new ViewHolder(view);
viewHolder.relativeLayout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
TextView redUrl = (TextView)view.findViewById(R.id.offer_url);
String postUrl = redUrl.getText().toString();
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(postUrl));
Intent browserChooserIntent = Intent.createChooser(intent , "Choose browser of your choice");
context.startActivity(browserChooserIntent);
}
});
return viewHolder;
}
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Coupon coupon = couponArrayList.get(position);
holder.title.setText(coupon.getTitle());
holder.name.setText(coupon.getName());
holder.coupon.setText(coupon.getCoupon());
holder.expiry.setText(coupon.getExpiry());
holder.url.setText(coupon.getLink());
//Image loading using singleton class
mImageLoader = MySingleton.getInstance(context).getImageLoader();
holder.image.setImageUrl(coupon.getImage(),mImageLoader);
holder.image.setDefaultImageResId(R.drawable.placeholder_image);
}
@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
super.onAttachedToRecyclerView(recyclerView);
}
public void remove(ContactsContract.Contacts.Data data) {
int position = couponArrayList.indexOf(data);
couponArrayList.remove(position);
notifyItemRemoved(position);
}
@Override
public int getItemCount() {
return couponArrayList.size();
}
public static class ViewHolder extends RecyclerView.ViewHolder{
NetworkImageView image;
RelativeLayout relativeLayout;
TextView title,name,coupon,expiry,url;
public ViewHolder(View itemView) {
super(itemView);
this.image = (NetworkImageView)itemView.findViewById(R.id.offer_image);
this.title = (TextView)itemView.findViewById(R.id.offer_title);
this.name = (TextView)itemView.findViewById(R.id.offer_name);
this.coupon = (TextView)itemView.findViewById(R.id.coupon_code);
this.expiry = (TextView)itemView.findViewById(R.id.expiry_date);
this.url = (TextView)itemView.findViewById(R.id.offer_url);
this.relativeLayout = (RelativeLayout)itemView.findViewById(R.id.relLayout);
//make sure it is clickable
itemView.setClickable(true);
}
}
ここだのですAllOffers.java（Tab1を）
public class AllOffers extends Fragment {
RequestQueue queue;
RecyclerView recyclerView;
RecyclerView.Adapter adapter;
RecyclerView.LayoutManager layoutManager;
ArrayList<Coupon> arrayList = new ArrayList<>();
public AllOffers() {
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.alloffers, container, false);
recyclerView = (RecyclerView) view.findViewById(R.id.recyclerView);
layoutManager = new LinearLayoutManager(getContext());
recyclerView.setLayoutManager(layoutManager);
recyclerView.setHasFixedSize(true);
//creating object of BgT to get arraylist og offers & coupons &&asign to local arrayList
BackgroundTask backgroundTask = new BackgroundTask(getActivity());
arrayList = backgroundTask.getList();
adapter = new MyAdapter(getContext(), arrayList);
//adding horizontal line b/w rows
recyclerView.addItemDecoration(new DividerItemDecoration(getContext(), LinearLayoutManager.VERTICAL));
recyclerView.setAdapter(adapter);
// adapter.clearAdapter();
arrayList.clear();
return view;
}
}
Backgroundtask.java
public class BackgroundTask {
Context context;
RequestQueue queue;
public static final String KEY_TITLE="coupon_title";
public static final String KEY_NAME="offer_name";
public static final String KEY_CODE="coupon_code";
public static final String KEY_IMAGE="store_image";
public static final String KEY_EXPIRY="coupon_expiry";
public static final String KEY_POSTURL="store_link";
private ImageLoader mImageLoader;
ArrayList<Coupon> arrayList = new ArrayList<>();
public static final String json_url="https://tools.vcommission.com/api/coupons.php?apikey=xxxxxxxxxx";
public BackgroundTask(Context context) {
this.context = context;
}
public ArrayList<Coupon> getList()
{
final JsonArrayRequest jsonArrayRequest=new JsonArrayRequest(Request.Method.POST, json_url,null,
new Response.Listener<JSONArray>() {
@Override
public void onResponse(JSONArray response) {
int count=0;
while (count<response.length())
{
try {
JSONObject jsonObject= response.getJSONObject(count);
Coupon coupon = new Coupon(jsonObject.getString(KEY_TITLE),
jsonObject.getString(KEY_NAME),
jsonObject.getString(KEY_CODE),
jsonObject.getString(KEY_IMAGE),
jsonObject.getString(KEY_EXPIRY),
jsonObject.getString(KEY_POSTURL));
arrayList.add(coupon);
count++;
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Toast.makeText(context,"No internet connection...!!!",Toast.LENGTH_LONG).show();
error.printStackTrace();
}
});
MySingleton.getInstance(context).addToRequestQueue(jsonArrayRequest);
return arrayList;
}
}
OMG !!それは動作します...あなたの仲間に感謝 –