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Getting error : Could not deserialize object. Failed to convert a value of type java.lang.String to long

enter image description hereI have tried changing values many times. Now I have the same values in Firebas. It's working if I give the values manually in code, but it's not working while I try to get the info from Firestore. But still, I'm getting this error continuously:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.luteraa.luteraaesports, PID: 8828
java.lang.RuntimeException: Could not deserialize object. Failed to convert a value of type java.lang.String to long (found in field 'matchNumber')
at com.google.firebase.firestore.util.CustomClassMapper.deserializeError(CustomClassMapper.java:563)
at com.google.firebase.firestore.util.CustomClassMapper.convertLong(CustomClassMapper.java:434)
at com.google.firebase.firestore.util.CustomClassMapper.deserializeToPrimitive(CustomClassMapper.java:326)
at com.google.firebase.firestore.util.CustomClassMapper.deserializeToClass(CustomClassMapper.java:226)
at com.google.firebase.firestore.util.CustomClassMapper.deserializeToType(CustomClassMapper.java:189)
at com.google.firebase.firestore.util.CustomClassMapper.access$300(CustomClassMapper.java:54)
at com.google.firebase.firestore.util.CustomClassMapper$BeanMapper.deserialize(CustomClassMapper.java:770)
at com.google.firebase.firestore.util.CustomClassMapper$BeanMapper.deserialize(CustomClassMapper.java:741)
at com.google.firebase.firestore.util.CustomClassMapper.convertBean(CustomClassMapper.java:542)
at com.google.firebase.firestore.util.CustomClassMapper.deserializeToClass(CustomClassMapper.java:253)
at com.google.firebase.firestore.util.CustomClassMapper.convertToCustomClass(CustomClassMapper.java:100)
at com.google.firebase.firestore.DocumentSnapshot.toObject(DocumentSnapshot.java:183)
at com.google.firebase.firestore.QueryDocumentSnapshot.toObject(QueryDocumentSnapshot.java:116)
at com.google.firebase.firestore.DocumentSnapshot.toObject(DocumentSnapshot.java:161)
at com.google.firebase.firestore.QueryDocumentSnapshot.toObject(QueryDocumentSnapshot.java:97)
at com.luteraa.luteraaesports.BgmiActivity$1.onEvent(BgmiActivity.java:39)
at com.luteraa.luteraaesports.BgmiActivity$1.onEvent(BgmiActivity.java:35)
at com.google.firebase.firestore.Query.lambda$addSnapshotListenerInternal$2$Query(Query.java:1133)
at com.google.firebase.firestore.-$$Lambda$Query$JWhMgzcsIac1Z-exZj1pTDRisJg.onEvent(Unknown Source:6)
at com.google.firebase.firestore.core.AsyncEventListener.lambda$onEvent$0$AsyncEventListener(AsyncEventListener.java:42)
at com.google.firebase.firestore.core.-$$Lambda$AsyncEventListener$DNkggu2LY54oguDvcp-QtRg6Sfg.run(Unknown Source:6)
at android.os.Handler.handleCallback(Handler.java:914)
at android.os.Handler.dispatchMessage(Handler.java:100)
at android.os.Looper.loop(Looper.java:224)
at android.app.ActivityThread.main(ActivityThread.java:7551)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:539)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:995)
That's my Model's code
public class BGMICategoryModel {
private String matchId;
private long matchNumber;
private String gameMode;
public BGMICategoryModel(String matchId, long matchNumber, String gameMode) {
this.matchId = matchId;
this.matchNumber = matchNumber;
this.gameMode = gameMode;
}
public BGMICategoryModel(){}
public String getMatchId() {
return matchId;
}
public void setMatchId(String matchId) {
this.matchId = matchId;
}
public long getMatchNumber() {
return matchNumber;
}
public void setMatchNumber(long matchNumber) {
this.matchNumber = matchNumber;
}
public String getGameMode() {
return gameMode;
}
public void setGameMode(String gameMode) {
this.gameMode = gameMode;
}
}
My adapter code
public class BGMICategoryAdapter extends RecyclerView.Adapter<BGMICategoryAdapter.BGMICategoryViewHolder> {
Context context;
ArrayList<BGMICategoryModel> bgmiCategoryModels;
public BGMICategoryAdapter(Context context, ArrayList<BGMICategoryModel> bgmiCategoryModels){
this.context = context;
this.bgmiCategoryModels = bgmiCategoryModels;
}
#NonNull
#NotNull
#Override
public BGMICategoryViewHolder onCreateViewHolder(#NonNull #NotNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.matches_bgmi,null);
return new BGMICategoryViewHolder(view);
}
#Override
public void onBindViewHolder(#NonNull #NotNull BGMICategoryAdapter.BGMICategoryViewHolder holder, int position) {
BGMICategoryModel model = bgmiCategoryModels.get(position);
holder.matchNumber.setText(String.valueOf(model.getMatchNumber()));
holder.gameMode.setText(model.getGameMode());
}
#Override
public int getItemCount() {
return bgmiCategoryModels.size();
}
public class BGMICategoryViewHolder extends RecyclerView.ViewHolder{
TextView matchNumber, gameMode;
public BGMICategoryViewHolder(#NonNull #NotNull View itemView) {
super(itemView);
matchNumber = itemView.findViewById(R.id.matchNumber);
gameMode = itemView.findViewById(R.id.gameMode);
}
}
}
Main Activity
public class BgmiActivity extends AppCompatActivity {
ActivityBgmiBinding activityBgmiBinding;
FirebaseFirestore fStore;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
activityBgmiBinding = ActivityBgmiBinding.inflate(getLayoutInflater());
setContentView(activityBgmiBinding.getRoot());
fStore = FirebaseFirestore.getInstance();
ArrayList<BGMICategoryModel> bgmiCategoryModels = new ArrayList<>();
//bgmiCategoryModels.add(new BGMICategoryModel("match1", 1, "PCM"));
BGMICategoryAdapter adapter = new BGMICategoryAdapter(this, bgmiCategoryModels);
fStore.collection("bgmiMatches").addSnapshotListener(new EventListener<QuerySnapshot>() {
#Override
public void onEvent(#Nullable #org.jetbrains.annotations.Nullable QuerySnapshot value, #Nullable #org.jetbrains.annotations.Nullable FirebaseFirestoreException error) {
for (DocumentSnapshot snapshot : value.getDocuments()){
BGMICategoryModel model = snapshot.toObject(BGMICategoryModel.class);
model.setMatchId(snapshot.getId());
bgmiCategoryModels.add(model);
}
adapter.notifyDataSetChanged();
}
});
activityBgmiBinding.bgmiContent.setLayoutManager(new LinearLayoutManager(this));
activityBgmiBinding.bgmiContent.setAdapter(adapter);
}
}
I cannot find a solution for this. Please help me fix this. Thank you.

You are getting the following error:
java.lang.RuntimeException: Could not deserialize object. Failed to convert a value of type java.lang.String to long (found in field 'matchNumber')
Because your matchNumber field is defined in your class as a long, while in database holds a String value. To get rid of this Exception, please change the type of the field to be a Number and not a String, for example:
matchNumber: 12 //Correct
matchNumber: "12" //Incorrect. See the quotation marks?

Represent firestore data into List view [duplicate]

I wanted to know how to load more data in recylcer view using firestore.
Query query = FirebaseFirestore.getInstance()
.collection("ie").limit(5);
adapter=new InterviewAdapter(this,query);
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
Adapter class looks like this:
public class InterviewAdapter extends FireStoreAdapter<InterviewAdapter.ViewHolder> {
public interface OnInterviewSelectedListener {
void onInterviewSelected(DocumentSnapshot interview);
}
private InterviewAdapter.OnInterviewSelectedListener mListener;
public InterviewAdapter(Query query, OnInterviewSelectedListener listener) {
super(query);
mListener = listener;
}
#Override
public InterviewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = LayoutInflater.from(parent.getContext());
return new InterviewAdapter.ViewHolder(inflater.inflate(R.layout.ie, parent, false));
}
#Override
public void onBindViewHolder(InterviewAdapter.ViewHolder holder, int position) {
holder.bind(getSnapshot(position), mListener);
}
static class ViewHolder extends RecyclerView.ViewHolder {
TextView title,companyName,username,views,isHired;
public ViewHolder(View itemView) {
super(itemView);
title= (TextView) itemView.findViewById(R.id.title);
companyName= (TextView) itemView.findViewById(R.id.companyName);
username= (TextView) itemView.findViewById(R.id.username);
views= (TextView) itemView.findViewById(R.id.views);
isHired= (TextView) itemView.findViewById(R.id.isHired);
}
public void bind(final DocumentSnapshot snapshot,
final OnInterviewSelectedListener listener) {
InterviewExperience experience;
String companyName=snapshot.getString("companyName");
boolean isHired=Boolean.valueOf(snapshot.getBoolean("isHired"));
String username=snapshot.getString("username");
long views=new Double(Double.valueOf(snapshot.getDouble("views"))).longValue();
String id=snapshot.getId();
String title=snapshot.getString("title");
experience=new InterviewExperience(id,title,companyName,username,isHired,views,null,null);
this.title.setText(experience.getTitle());
this.companyName.setText("Company Name: "+experience.getCompanyName());
this.isHired.setText("Hired: "+experience.isHired());
this.views.setText("Views: "+experience.getViews()+"");
this.username.setText("Created By: "+experience.getUsername());
// Click listener
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (listener != null) {
listener.onInterviewSelected(snapshot);
}
}
});
}
}
}
public abstract class FireStoreAdapter<VH extends RecyclerView.ViewHolder>
extends RecyclerView.Adapter<VH>
implements EventListener<QuerySnapshot> {
private static final String TAG = "FirestoreAdapter";
private Query mQuery;
private ListenerRegistration mRegistration;
private ArrayList<DocumentSnapshot> mSnapshots = new ArrayList<>();
public FireStoreAdapter(Query query) {
mQuery = query;
}
#Override
public void onEvent(QuerySnapshot documentSnapshots, FirebaseFirestoreException e) {
if (e != null) {
Log.w(TAG, "onEvent:error", e);
onError(e);
return;
}
// Dispatch the event
Log.d(TAG, "onEvent:numChanges:" + documentSnapshots.getDocumentChanges().size());
for (DocumentChange change : documentSnapshots.getDocumentChanges()) {
switch (change.getType()) {
case ADDED:
onDocumentAdded(change);
break;
case MODIFIED:
onDocumentModified(change);
break;
case REMOVED:
onDocumentRemoved(change);
break;
}
}
onDataChanged();
}
public void startListening() {
if (mQuery != null && mRegistration == null) {
mRegistration = mQuery.addSnapshotListener(this);
}
}
public void stopListening() {
if (mRegistration != null) {
mRegistration.remove();
mRegistration = null;
}
mSnapshots.clear();
notifyDataSetChanged();
}
public void setQuery(Query query) {
// Stop listening
stopListening();
// Clear existing data
mSnapshots.clear();
notifyDataSetChanged();
// Listen to new query
mQuery = query;
startListening();
}
#Override
public int getItemCount() {
return mSnapshots.size();
}
protected DocumentSnapshot getSnapshot(int index) {
return mSnapshots.get(index);
}
protected void onDocumentAdded(DocumentChange change) {
mSnapshots.add(change.getNewIndex(), change.getDocument());
notifyItemInserted(change.getNewIndex());
}
protected void onDocumentModified(DocumentChange change) {
if (change.getOldIndex() == change.getNewIndex()) {
// Item changed but remained in same position
mSnapshots.set(change.getOldIndex(), change.getDocument());
notifyItemChanged(change.getOldIndex());
} else {
// Item changed and changed position
mSnapshots.remove(change.getOldIndex());
mSnapshots.add(change.getNewIndex(), change.getDocument());
notifyItemMoved(change.getOldIndex(), change.getNewIndex());
}
}
protected void onDocumentRemoved(DocumentChange change) {
mSnapshots.remove(change.getOldIndex());
notifyItemRemoved(change.getOldIndex());
}
protected void onError(FirebaseFirestoreException e) {};
protected void onDataChanged() {}
}
I used Firestore Adapter code which was given in samples of firestore documentation. Can anyone tell how to use the query object to load more data?
How to load the next 5 items in the recycler view when users scrolls to the end of the list?

You can paginate your Query's result using Query's methods like, startAt(), startAfter(), endAt(), endBefore() with a specified DocumentSnapshot.
If I considered your collection is called "interviews", you can add a method to your FireStoreAdapter like this:
private void paginate(final DocumentSnapshot last, final int limit) {
final Query subset;
if (last == null) {
subset = db.collection("interviews")
.limit(limit);
} else {
subset = db.collection("interviews")
.startAfter(last)
.limit(limit);
}
setQuery(subset);
}
You can perserve the last DocumentSnapshot within onEvent():
final List<DocumentChange> changes = documentSnapshots.getDocumentChanges();
final DocumentSnapshot lastDocument = changes.get(changes.size() - 1).getDocument();
Finally, when users scrolls to the end of the list:
paginate(lastDocument, 5);
And onDocumentAdded() will take care of it. Be carfure NOT to use startAt() because it will not execlude the last one (that already at the end of your list, and will duplicate it).

Retreive data from server onClick View

I have a server that I get data from and display on a RecyclerView, When I click on the view, it is expected to open another activity that will display the full detail of the specific view, therefore the Id of the post is used to get the full content. I passed the id by intent to the new Activity, am getting an error:
Caused by: java.lang.IndexOutOfBoundsException: Invalid index 34, size is 0
how do I make the Api call to get the content using id?
This is the full content for the item with id=34
{
"blog_id": "34",
"blog_title": "BLOG TITLE",
"blog_subtitle": "Inspiration for Article Intro Effects",
"blog_excerpt": "<p>Lorem ipsum dolor sit amet, veniam vidisse periculis ei mel, an nam malis nostrud euripidis. Ad invidunt explicari repudiandae qui, ut quo dolor sadipscing. Est laudem offendit ei. Id mentitum asse",
"blog_content": "<p>We may define a food to be any substance which will repair the functional waste of the body, increase its growth, or maintain the heat, muscular, and nervous energy.</p>\r\n<p>In its most comprehensive sense, the oxygen of the air is a food; as although it is admitted by the lungs, it passes into the blood, and there re-acts upon the other food which has passed through the stomach. It is usual, however, to restrict the term food to such nutriment as enters the body by the intestinal canal. Water is often spoken of as being distinct from food, but for this there is no sufficient reason.</p>\r\n<p>Many popular writers have divided foods into flesh-formers, heat-givers, and bone-formers. Although attractive from its simplicity, this classification will not
"blog_thumbnail": "https://watchnollywood.ml/app/templates/default/",
"blog_medimg": "https://watchnollywood.ml/app/templates/default/images/medium_57d4789461f8b.jpg",
"category_title": "General"
}
BlogAdapter:
public class MyBlogAdapter extends RecyclerView.Adapter<BlogViewHolder> {
List<BlogPost> postsList;
List<SingleBlogPost> singleBlogPosts;
Context context;
private LayoutInflater inflater;
static String blog_Id;
static String blogID;
public MyBlogAdapter(Context context, List<BlogPost> postsList){
this.context = context;
this.inflater = LayoutInflater.from(context);
this.postsList = postsList;
}
#Override
public BlogViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.blog_post_item,parent, false);
return new BlogViewHolder(view);
}
#Override
public void onBindViewHolder(BlogViewHolder holder, int position) {
BlogPost posts= postsList.get(position);
holder.summary.setText(posts.getBlogExcerpt().trim().toString());
holder.title.setText(posts.getBlogTitle().trim().toString());
Glide.with(context).load(posts.getBlogThumbnail()).into(holder.cover);
holder.blogHolder.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(context, AnotherSingleView.class);
blog_Id = posts.getBlogId();
intent.putExtra(blogID,blog_Id);
Log.d("MyblogAdapter","Please check blog Id: "+blog_Id);
context.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
Log.d("MyBlogAdapter,","getItemCount"+postsList.size());
return postsList == null ? (0) : postsList.size();
}
}
AnotherSingleView:
public class AnotherSingleView extends AppCompatActivity {
String postID;
int position = 0;
public TextView blogTitle,blogSub,blogContent;
public ImageView blogPic;
List<SingleBlogPost> singleBlogPosts;
SingleBlogPost singleBlogPost;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_another_single_view);
Intent intent = getIntent();
Bundle showBlogId = intent.getExtras();
postID = showBlogId.getString(blogID);
Log.d("AnotherSingleView","Please check blog Id: "+postID);
singleBlogPosts = new ArrayList<>();
blogContent = (TextView)findViewById(R.id.blog_content);
blogSub = (TextView) findViewById(R.id.blog_subtitle);
blogTitle =(TextView) findViewById(R.id.blog_title);
blogPic =(ImageView) findViewById(R.id.blog_pix);
singlePostDisplay();
}
private void singlePostDisplay() {
singleBlogPost = singleBlogPosts.get(Interger.parseInt(postID));
String post_id = singleBlogPost.getBlogId();
if (postID.matches(post_id)){
BlogaPI api = ApiClient.getBlogInterface();
Call<List<SingleBlogPost>> call = api.postResponse();
call.enqueue(new Callback<List<SingleBlogPost>>() {
#Override
public void onResponse(Call<List<SingleBlogPost>> call, Response<List<SingleBlogPost>> response) {
singleBlogPosts = response.body();
blogContent.setText(singleBlogPost.getBlogContent());
blogSub.setText(singleBlogPost.getBlogSubtitle());
blogTitle.setText(singleBlogPost.getBlogTitle());
Glide.with(AnotherSingleView.this).load(singleBlogPost.getBlogMedimg()).into(blogPic);
}
#Override
public void onFailure(Call<List<SingleBlogPost>> call, Throwable t) {
}
});
}
}
}
Interface:
public interface BlogRequestInterface {
#GET("blog")
Call<BlogApi> getMyBlog();
#GET("post/{id}")
Call<List<SingleBlogPost>> getSinglePost();
}
Pojo class:
public class SingleBlogPost {
#SerializedName("blog_id")
#Expose
private String blogId;
#SerializedName("blog_title")
#Expose
private String blogTitle;
#SerializedName("blog_subtitle")
#Expose
private String blogSubtitle;
#SerializedName("blog_excerpt")
#Expose
private String blogExcerpt;
#SerializedName("blog_content")
#Expose
private String blogContent;
#SerializedName("blog_thumbnail")
#Expose
private String blogThumbnail;
#SerializedName("blog_medimg")
#Expose
private String blogMedimg;
#SerializedName("category_title")
#Expose
private String categoryTitle;
public String getBlogId() {
return blogId;
}
public void setBlogId(String blogId) {
this.blogId = blogId;
}
public String getBlogTitle() {
return blogTitle;
}
public void setBlogTitle(String blogTitle) {
this.blogTitle = blogTitle;
}
public String getBlogSubtitle() {
return blogSubtitle;
}
public void setBlogSubtitle(String blogSubtitle) {
this.blogSubtitle = blogSubtitle;
}
public String getBlogExcerpt() {
return blogExcerpt;
}
public void setBlogExcerpt(String blogExcerpt) {
this.blogExcerpt = blogExcerpt;
}
public String getBlogContent() {
return blogContent;
}
public void setBlogContent(String blogContent) {
this.blogContent = blogContent;
}
public String getBlogThumbnail() {
return blogThumbnail;
}
public void setBlogThumbnail(String blogThumbnail) {
this.blogThumbnail = blogThumbnail;
}
public String getBlogMedimg() {
return blogMedimg;
}
public void setBlogMedimg(String blogMedimg) {
this.blogMedimg = blogMedimg;
}
public String getCategoryTitle() {
return categoryTitle;
}
public void setCategoryTitle(String categoryTitle) {
this.categoryTitle = categoryTitle;
}

I do not recommend adding ClickListeners on onBindViewHolder. My onCreateViewHolder does something like this.
#Override
public BlogViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.blog_post_item,parent, false);
view.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//do stuff
}
});
return new BlogViewHolder(view);
}
And if you need position or list object for that you can refer to this link http://androidshenanigans.blogspot.com.tr/2015/02/viewholder-pattern-common-mistakes.html
Hope it helps.

java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()' on a null object reference Retrofit

I'm trying to use blog id to get JSON object from server. At the moment I'm getting this error
java.lang.NullPointerException: Attempt to invoke interface method 'java.util.Iterator java.util.List.iterator()
on a null object reference`.How do I use the post Id to get the full content what am I doing wrong. Please help!!!
MyBlog Adapter:
public class MyBlogAdapter extends RecyclerView.Adapter<BlogViewHolder> {
List<BlogResponse> postsList;
Context context;
public static String blog_Id, blogID;
private LayoutInflater inflater;
public MyBlogAdapter(Context context, List<BlogResponse> postsList){
this.context = context;
this.inflater = LayoutInflater.from(context);
this.postsList = postsList;
}
#Override
public BlogViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = inflater.inflate(R.layout.custom_view,parent, false);
return new BlogViewHolder(view);
}
#Override
public void onBindViewHolder(BlogViewHolder holder, int position) {
final BlogResponse posts= postsList.get(position);
holder.summary.setText(posts.getBlogExcerpt().trim().toString());
holder.title.setText(posts.getBlogTitle().trim().toString());
// Glide.with(context).load(posts.getBlogThumbnail()).into(holder.cover);
holder.blogHolder.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(context, AnotherSingleView.class);
blog_Id = posts.getBlogId();
intent.putExtra(blogID,blog_Id);
Log.d("MyblogAdapter","Please check blog Id: "+blog_Id);
context.startActivity(intent);
}
});
}
#Override
public int getItemCount() {
Log.d("MyBlogAdapter,","getItemCount"+postsList.size());
return postsList == null ? (0) : postsList.size();
}
}
SecondActivity:
public class AnotherSingleView extends AppCompatActivity {
String postID;
int position;
public TextView blogTitle,blogSub,blogContent;
public ImageView blogPic;
List<SingleBlogPost> singleBlogPosts;
SingleBlogPost singleBlogPost;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_another_single_view);
Intent intent = getIntent();
Bundle showBlogId = intent.getExtras();
postID = showBlogId.getString(blogID);
Log.d("AnotherSingleView","Please check blog Id: "+postID);
singleBlogPosts = new ArrayList<>();
blogContent = (TextView)findViewById(R.id.blog_content);
blogSub = (TextView) findViewById(R.id.blog_subtitle);
blogTitle =(TextView) findViewById(R.id.blog_title);
blogPic =(ImageView) findViewById(R.id.blog_pix);
singlePostDisplay();
}
private void singlePostDisplay() {
BlogaPI api = ApiClient.getBlogInterface();
Call<List<SingleBlogPost>> call = api.postResponse(postID);
call.enqueue(new Callback<List<SingleBlogPost>>() {
#Override
public void onResponse(Call<List<SingleBlogPost>> call, Response<List<SingleBlogPost>> response) {
singleBlogPosts = response.body();
if (singleBlogPosts != null && !singleBlogPosts.isEmpty() ){
for (SingleBlogPost posts : singleBlogPosts){
Log.d("AnotherSingleView","Please check RESPONSE: "+response.body().toString());
blogTitle.setText(posts.getBlogTitle());
blogSub.setText(posts.getBlogSubtitle());
blogContent.setText(posts.getBlogContent());
// Glide.with(AnotherSingleView.this).load(singlepost.getBlogMedimg()).into(blogPic);
}
}
else{
Toast.makeText(AnotherSingleView.this, "Something is empty", Toast.LENGTH_SHORT).show();
} }
#Override
public void onFailure(Call<List<SingleBlogPost>> call, Throwable t) {
Toast.makeText(AnotherSingleView.this, "check again: "+t.toString(), Toast.LENGTH_SHORT).show();
}
});
}
}
Interface:
public interface BlogaPI {
#GET("blog")
Call<BlogList> response();
#GET("post/{blog_id}")
Call<List<SingleBlogPost>> postResponse(#Path("blog_id") String blog_id);
//Call<List<SingleBlogPost>> postResponse();
}
SingleBlogPost:
public class SingleBlogPost {
#SerializedName("blog_id")
#Expose
private String blogId;
#SerializedName("blog_title")
#Expose
private String blogTitle;
#SerializedName("blog_subtitle")
#Expose
private String blogSubtitle;
#SerializedName("blog_excerpt")
#Expose
private String blogExcerpt;
#SerializedName("blog_content")
#Expose
private String blogContent;
#SerializedName("blog_thumbnail")
#Expose
private String blogThumbnail;
#SerializedName("blog_medimg")
#Expose
private String blogMedimg;
#SerializedName("category_title")
#Expose
private String categoryTitle;
public SingleBlogPost(String blogId,String blogTitle, String blogSubtitle, String blogExcerpt,
String blogContent, String blogThumbnail, String blogMedimg, String categoryTitle){
this.blogId = blogId;
this.blogTitle = blogTitle;
this.blogSubtitle = blogSubtitle;
this.blogExcerpt = blogExcerpt;
this.blogContent = blogContent;
this.blogThumbnail = blogThumbnail;
this.blogMedimg = blogMedimg;
this.categoryTitle = categoryTitle;
}
public String getBlogId() {
return blogId;
}
public void setBlogId(String blogId) {
this.blogId = blogId;
}
public String getBlogTitle() {
return blogTitle;
}
public void setBlogTitle(String blogTitle) {
this.blogTitle = blogTitle;
}
public String getBlogSubtitle() {
return blogSubtitle;
}
public void setBlogSubtitle(String blogSubtitle) {
this.blogSubtitle = blogSubtitle;
}
public String getBlogExcerpt() {
return blogExcerpt;
}
public void setBlogExcerpt(String blogExcerpt) {
this.blogExcerpt = blogExcerpt;
}
public String getBlogContent() {
return blogContent;
}
public void setBlogContent(String blogContent) {
this.blogContent = blogContent;
}
public String getBlogThumbnail() {
return blogThumbnail;
}
public void setBlogThumbnail(String blogThumbnail) {
this.blogThumbnail = blogThumbnail;
}
public String getBlogMedimg() {
return blogMedimg;
}
public void setBlogMedimg(String blogMedimg) {
this.blogMedimg = blogMedimg;
}
public String getCategoryTitle() {
return categoryTitle;
}
public void setCategoryTitle(String categoryTitle) {
this.categoryTitle = categoryTitle;
}
}

Check if the server response is different then null before you do a enhanced for like this:
if(singleBlogPosts!= null) {
for (SingleBlogPosts posts : singleBlogPosts){
Log.d("AnotherSingleView","Please check RESPONSE: "+response.body().toString());
blogTitle.setText(posts.getBlogTitle());
blogSub.setText(posts.getBlogSubtitle());
blogContent.setText(posts.getBlogContent());
// Glide.with(AnotherSingleView.this).load(singlepost.getBlogMedimg()).into(blogPic);
}
}

you question was list iterator,but we can`t see you list use on anywhere,i guess you may be use recyclerView on you data has not get,because get data was asynchronous.try to use data if you can sure it is existing.

How to set image from drawable into imageview in Android

I want show image into RecyclerView and i should use this images from drawable folder. I write below codes, but show me this error :
java.lang.IllegalArgumentException: Unknown type class [I. You must provide a Model of a type for which there is a registered ModelLoader, if you are using a custom model, you must first call Glide#register with a ModelLoaderFactory for your custom model class
at com.bumptech.glide.RequestManager.loadGeneric(RequestManager.java:629)
at com.bumptech.glide.RequestManager.load(RequestManager.java:598)
at com.tellfa.colony.Adapters.ColoniesAdapter.onBindViewHolder(ColoniesAdapter.java:66)
at com.tellfa.colony.Adapters.ColoniesAdapter.onBindViewHolder(ColoniesAdapter.java:29)
at android.support.v7.widget.RecyclerView$Adapter.onBindViewHolder(RecyclerView.java:5768)
at android.support.v7.widget.RecyclerView$Adapter.bindViewHolder(RecyclerView.java:5801)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:5037)
at android.support.v7.widget.RecyclerView$Recycler.getViewForPosition(RecyclerView.java:4913)
at android.support.v7.widget.LinearLayoutManager$LayoutState.next(LinearLayoutManager.java:2029)
at android.support.v7.widget.LinearLayoutManager.layoutChunk(LinearLayoutManager.java:1414)
at android.support.v7.widget.LinearLayoutManager.fill(LinearLayoutManager.java:1377)
at android.support.v7.widget.LinearLayoutManager.onLayoutChildren(LinearLayoutManager.java:578)
at android.support.v7.widget.RecyclerView.dispatchLayoutStep2(RecyclerView.java:3260)
at android.support.v7.widget.RecyclerView.dispatchLayout(RecyclerView.java:3069)
at android.support.v7.widget.RecyclerView.onLayout(RecyclerView.java:3518)
at android.view.View.layout(View.java:15631)
at android.view.ViewGroup.layout(ViewGroup.java:4966)
at android.widget.RelativeLayout.onLayout(RelativeLayout.java:1076)
at android.view.View.layout(View.java:15631)
at android.view.ViewGroup.layout(ViewGroup.java:4966)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:15631)
at android.view.ViewGroup.layout(ViewGroup.java:4966)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1705)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1559)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1468)
at android.view.View.layout(View.java:15631)
at android.view.ViewGroup.layout(ViewGroup.java:4966)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:15631)
at android.view.ViewGroup.layout(ViewGroup.java:4966)
at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1705)
at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1559)
at android.widget.LinearLayout.onLayout(LinearLayout.java:1468)
at android.view.View.layout(View.java:15631)
at android.view.ViewGroup.layout(ViewGroup.java:4966)
at android.widget.FrameLayout.layoutChildren(FrameLayout.java:573)
at android.widget.FrameLayout.onLayout(FrameLayout.java:508)
at android.view.View.layout(View.java:15631)
at android.view.ViewGroup.layout(ViewGroup.java:4966)
at android.view.ViewRootImpl.performLayout(ViewRootImpl.java:2101)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1858)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1077)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5845)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:767)
at android.view.Choreographer.doCallbacks(Choreographer.java:580)
at android.view.Choreographer.doFrame(Choreographer.java:550)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:753)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5272)
at java.lang.reflect.Method.invoke(Native Method)
at jav
Model codes:
public class MainDataModel implements Serializable {
private static final long serialVersionUID = 1L;
private String category;
private String categoryID;
private String categoryDescription;
private int[] categoryImages;
private TimeInterpolator interpolator;
public MainDataModel(String categoryID, String category, String categoryDescription, int[] categoryImages,
TimeInterpolator interpolator) {
this.categoryID = categoryID;
this.category = category;
this.categoryDescription = categoryDescription;
this.categoryImages = categoryImages;
this.interpolator = interpolator;
}
public String getCategory() {
return category;
}
public void setCategory(String category) {
this.category = category;
}
public String getCategoryID() {
return categoryID;
}
public void setCategoryID(String caategoryID) {
this.categoryID = caategoryID;
}
public String getCategoryDescription() {
return categoryDescription;
}
public void setCategoryDescription(String categoryDescription) {
this.categoryDescription = categoryDescription;
}
public TimeInterpolator getInterpolator() {
return interpolator;
}
public void setInterpolator(TimeInterpolator interpolator) {
this.interpolator = interpolator;
}
public int[] getCategoryImages() {
return categoryImages;
}
public void setCategoryImages(int[] categoryImages) {
this.categoryImages = categoryImages;
}
}
AsyncTask codes and set image :
public class ColoniesDataInfo {
private static Context mContext;
private String ServerAddress = ServerIP_colonies.getColoniesIP();
public void getColoniesDataInfo(Context context) {
mContext = context;
new getInfo().execute(ServerAddress);
}
private class getInfo extends AsyncTask<String, Void, String> {
EventBus bus = EventBus.getDefault();
private String ou_response;
private List<MainDataModel> infoModels;
#Override
protected void onPreExecute() {
CustomProcessDialog.createAndShow(mContext);
infoModels = new ArrayList<>();
}
#Override
protected String doInBackground(String... params) {
OkHttpClient client = new OkHttpClient();
//String url = (String) params[0];
Request request = new Request.Builder()
.url(ServerAddress)
//.cacheControl(CacheControl.FORCE_NETWORK)
.build();
Response response;
try {
response = client.newCall(request).execute();
ou_response = response.body().string();
response.body().close();
if (ou_response != null) {
try {
JSONObject postObj = new JSONObject(ou_response);
JSONArray postsArray = postObj.optJSONArray("categories");
infoModels = new ArrayList<>();
for (int i = 0; i <= infoModels.size(); i++) {
JSONObject postObject = (JSONObject) postsArray.get(i);
String colID = postObject.getString("id");
String colTitle = postObject.getString("title");
String colDescription = postObject.getString("description");
final int[] colImages = {
R.drawable.colonies_image_food,
R.drawable.colonies_image_medical,
R.drawable.colonies_image_tecgnolegy,
R.drawable.colonies_image_entertenement,
R.drawable.colonies_image_car,
R.drawable.colonies_image_model,
R.drawable.colonies_image_sport,
};
Log.d("Data", "Colonies ID: " + colID);
Log.d("Data", "Colonies title: " + colTitle);
Log.d("Data", "Colonies Desc: " + colDescription);
Log.d("Data", "---------------------------------");
//Use the title and id as per your requirement
infoModels.add(new MainDataModel(colID, colTitle, colDescription, colImages,
Utils.createInterpolator(Utils.BOUNCE_INTERPOLATOR)));
}
} catch (JSONException e) {
e.printStackTrace();
}
}
} catch (IOException e) {
e.printStackTrace();
}
return ou_response;
}
#Override
protected void onPostExecute(String result) {
CustomProcessDialog.dissmis();
if (result != null) {
bus.post(infoModels);
} else {
Toast.makeText(mContext, "Empty", Toast.LENGTH_SHORT).show();
}
}
}
}
Adapter codes and set image into adapter :
public class ColoniesAdapter extends RecyclerView.Adapter<ColoniesAdapter.ViewHolder> {
private List<MainDataModel> mDateSet;
private Context mContext;
private SparseBooleanArray expandState = new SparseBooleanArray();
public ColoniesAdapter(Context context, List<MainDataModel> dataSet) {
this.mContext = context;
this.mDateSet = dataSet;
for (int i = 0; i < mDateSet.size(); i++) {
expandState.append(i, false);
}
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(mContext).inflate(R.layout.colonies_row, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
holder.colonies_title.setText(mDateSet.get(position).getCategory());
holder.colonies_title.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
int pos = holder.getPosition();
MainDataModel model = mDateSet.get(pos);
v.getContext().startActivity(new Intent(v.getContext(), Category_page.class)
.putExtra("categoryTitle", model.getCategory())
.putExtra("categoryID", model.getCategoryID()));
}
});
Glide.with(mContext)
.load(mDateSet.get(position).getCategoryImages())
.placeholder(R.drawable.post_image)
.crossFade()
.override(700, 400)
.into(holder.colonies_image);
holder.colonies_description.setText(mDateSet.get(position).getCategoryDescription());
holder.expandableLayout.setInterpolator(mDateSet.get(position).getInterpolator());
holder.expandableLayout.setExpanded(expandState.get(position));
holder.expandableLayout.setListener(new ExpandableLayoutListenerAdapter() {
#Override
public void onPreOpen() {
createRotateAnimator(holder.buttonLayout, 0f, 180f).start();
expandState.put(position, true);
}
#Override
public void onPreClose() {
createRotateAnimator(holder.buttonLayout, 180f, 0f).start();
expandState.put(position, false);
}
});
holder.buttonLayout.setRotation(expandState.get(position) ? 180f : 0f);
holder.buttonLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(final View v) {
onClickButton(holder.expandableLayout);
}
});
}
private void onClickButton(final ExpandableLayout expandableLayout) {
expandableLayout.toggle();
}
#Override
public int getItemCount() {
return mDateSet.size();
}
public void remove(int position) {
mDateSet.remove(position);
notifyItemRemoved(position);
}
public void clear() {
mDateSet.clear();
notifyDataSetChanged();
}
public void add(List<MainDataModel> models) {
mDateSet.addAll(models);
notifyDataSetChanged();
}
public void update(List<MainDataModel> models) {
mDateSet.clear();
mDateSet.addAll(models);
notifyDataSetChanged();
}
public static class ViewHolder extends RecyclerView.ViewHolder {
private TextView colonies_title, colonies_description;
private ImageView colonies_image;
private ExpandableLinearLayout expandableLayout;
private RelativeLayout buttonLayout;
public ViewHolder(View itemView) {
super(itemView);
colonies_title = (TextView) itemView.findViewById(R.id.colonies_colony_title_text);
colonies_image = (ImageView) itemView.findViewById(R.id.colonies_cover_image);
colonies_description = (TextView) itemView.findViewById(R.id.colonies_expandable_description_text);
buttonLayout = (RelativeLayout) itemView.findViewById(R.id.colonies_expandable_button);
expandableLayout = (ExpandableLinearLayout) itemView.findViewById(R.id.colonies_expandable_layout);
itemView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
/* v.getContext().startActivity(new Intent(v.getContext(), PostShow_page.class)
.putExtra("title", model.getTitle())
.putExtra("image", model.getThumbnail()));*/
}
});
}
}
public ObjectAnimator createRotateAnimator(final View target, final float from, final float to) {
ObjectAnimator animator = ObjectAnimator.ofFloat(target, "rotation", from, to);
animator.setDuration(300);
animator.setInterpolator(Utils.createInterpolator(Utils.LINEAR_INTERPOLATOR));
return animator;
}
}
How can i fix it?

First of all why are you loading all the array of images into a single imageView? Your method getCategoryImages() gives you an integer array of images. retrieve one by one corresponding to the position.
If the problem still persists you can refer to the below link with the same issue
https://github.com/bumptech/glide/issues/588
Glide.with(mContext)
.load(mDateSet.get(position).getCategoryImages()[position])
.placeholder(R.drawable.post_image)
.crossFade()
.override(700, 400)
.into(holder.colonies_image);

You are trying to load a list of ints and that is why Glide isn't working.
As you gave one ImageView as destination, only one image can be loaded there.
What you need to do is extract the image you wish to load and then pass it to Glide.