I have a class Tweet with a get Mentions methods with it
But I don't know how to setText to the ArrayList<>.
Here is my code
public class Tweet {
public String body;
private long uid;
private String createAt;
private User user;
private String urlImageNews;
private static String url;
public ArrayList<User> mentions;
public ArrayList<User> getMentions()
{
return mentions;
}
public String getUrlImageNews()
{
return urlImageNews;
}
public String getBody() {
return body;
}
public long getUid() {
return uid;
}
public String getCreateAt() {
return createAt;
}
public User getUser() {
return user;
}
public String getUrl()
{
return url;
}
public String getRelativeTimeAgo() {
String twitterFormat = "EEE MMM dd HH:mm:ss ZZZZZ yyyy";
SimpleDateFormat sf = new SimpleDateFormat(twitterFormat, Locale.ENGLISH);
sf.setLenient(true);
String relativeDate = "";
try {
long dateMillis = sf.parse(getCreateAt()).getTime();
relativeDate = DateUtils.getRelativeTimeSpanString(dateMillis,
System.currentTimeMillis(), DateUtils.SECOND_IN_MILLIS).toString();
} catch (ParseException e) {
e.printStackTrace();
}
return relativeDate;
}
public static Tweet fromJSON(JSONObject jsonObject)
{
Tweet twt = new Tweet();
try {
twt.body = jsonObject.getString("text");
twt.uid = jsonObject.getLong("id");
twt.createAt = jsonObject.getString("created_at");
twt.user = User.fromJSON(jsonObject.getJSONObject("user"));
twt.mentions = LoadMentions(jsonObject);
JSONArray media = jsonObject.getJSONObject("entities").optJSONArray("media");
if (media != null) {
for (int i = 0; i < media.length(); i++) {
JSONObject a = media.getJSONObject(i);
if (a.getString("type").equals("photo")) {
twt.urlImageNews = a.getString("media_url_https");
}
}
}
} catch (JSONException e) {
e.printStackTrace();
}
return twt;
}
private static ArrayList<User> LoadMentions(JSONObject object) throws JSONException{
if (!object.getJSONObject("entities").has("user_mentions")) {
return null;
}
ArrayList<User> mentions = new ArrayList<User>();
JSONArray mentionsJSON = object.getJSONObject("entities").getJSONArray("user_mentions");
for (int i = 0; i < mentionsJSON.length(); i++) {
User user = User.fromJSON(mentionsJSON.getJSONObject(i));
mentions.add(user);
}
return mentions;
}
public static ArrayList<Tweet> fromJSONArray(JSONArray jsonArray)
{
ArrayList<Tweet> tweets = new ArrayList<>();
for ( int i = 0 ; i < jsonArray.length(); i++)
{
try {
JSONObject tweetjson = jsonArray.getJSONObject(i);
Tweet tweet = Tweet.fromJSON(tweetjson);
if(tweet != null)
{
tweets.add(tweet);
}
} catch (JSONException e) {
e.printStackTrace();
continue;
}
}
return tweets;
}
}
Here is my MentionsAdapter where I want to setText the Mentions Array
public class MentionsAdapter extends RecyclerView.Adapter<MentionsAdapter.ViewHolder> {
Context context;
View tweetView;
private List<Tweet> lTweets;
public MentionsAdapter(List<Tweet> tweets)
{
lTweets = tweets;
}
public void clear() {
lTweets.clear();
notifyDataSetChanged();
}
// Add a list of items
public void addAll(List<Tweet> list) {
lTweets.addAll(list);
notifyDataSetChanged();
}
public static class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private ImageView ivProfile;
private TextView tvUsername;
private TextView tvMentions;
private TextView tvMentionsDate;
public ViewHolder(View view) {
super(view);
ivProfile = (ImageView) view.findViewById(R.id.ivAva);
tvUsername = (TextView) view.findViewById(R.id.tvName);
tvMentions = (TextView) view.findViewById(R.id.tvMentions);
tvMentionsDate = (TextView) view.findViewById(R.id.tvMentionsDate);
view.setOnClickListener(this);
}
#Override
public void onClick(View v) {
}
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
context = parent.getContext();
LayoutInflater inflater = LayoutInflater.from(context);
tweetView = inflater.inflate(R.layout.item_metions, parent, false);
ViewHolder viewHolder = new ViewHolder(tweetView);
return viewHolder;
}
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Log.d("debug", "int:: " + position);
Tweet tweet = lTweets.get(position);
holder.tvMentionsDate.setText(tweet.getRelativeTimeAgo());
holder.tvUsername.setText(tweet.getUser().getName());
holder.tvMentions.setText(tweet)
holder.ivProfile.setImageResource(android.R.color.transparent);
Glide.with(context).load(tweet.getUser().getProfileImageUrl()).into(holder.ivProfile);
}
#Override
public int getItemCount() {
if(lTweets == null){
Log.d("debug", "null");
return 0;
}
else {
Log.d("debug", ":: " + lTweets.size());
return lTweets.size();
}
}
}
Thanks in advance.
you can get mentions data from tweet by following
User user = tweet.getMentions();
so that you can get user object from that.same way you can get all user instances from here by using
user.getMethodName()
just update the above code in onBindViewHolder().
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Log.d("debug", "int:: " + position);
Tweet tweet = lTweets.get(position);
User user = tweet.getMentions();
holder.tvMentionsDate.setText(tweet.getRelativeTimeAgo());
holder.tvUsername.setText(tweet.getUser().getName());
holder.tvMentions.setText(tweet)
holder.ivProfile.setImageResource(android.R.color.transparent);
Glide.with(context).load(tweet.getUser().getProfileImageUrl()).into(holder.ivProfile);
}
If i am not wrong u want to add data to your ArrayList which is of type Tweet this can be done like this
yourArrayList.add(new Tweet ("Parameters goes here");
hope this helps
if I understand correctly you just want to display the number of mentions.
you can do this:
holder.tvMentions.setText(Integer.toString(tweet.getMentions().size()));
Ahh Well I fix with my answer just by adding some line :
twt.textMentions = jsonObject.getString("text");
Anyway thanks everyone for the answers
Related
The above image is a simple design that I want to develop.
I have four type of different data with different view type like the below image enter image description here. but that is not a problem. problem is the data will come from different API with lazy loading like when user scroll the list from recycle view it will grab the data from the server. My question is how to combine them in a single adapter because I need to use lazy loading .so I can't load whole data at a time so I need to call the different type of API like goal-list API, appraisal API, post API etc. When user scroll. anyone can give me an idea with example. How can I handle that? Also when user will scroll it will call another api likeCount and comment count also. Currently, In my, I am calling single API and show that in the single recycle view. Currently, I am using android architecture component LiveData
Fragment :
public class NewsFeedFragment extends FcaFragment {
private View view;
private RecyclerView postRecyclerView;
private PostsAdapter postsAdapter;
private List<Post> posts;
private TimelineViewModel timelineViewModel;
private ImageView addPostView;
private View addPostPanel;
private long lastApiCallTime;
private SwipyRefreshLayout swipeRefresh;
private long lastScroolItemInPost= 0;
public NewsFeedFragment() {
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
if(lastScroolItemInPost < 1) {
initViewModel(1 , 0 , true);
lastScroolItemInPost = 1;
}else {
initViewModel(((int) lastScroolItemInPost + 5), lastScroolItemInPost , true);
lastScroolItemInPost += 5;
}
final LinearLayoutManager linearLayoutManager = new LinearLayoutManager(ownerActivity);
view = inflater.inflate(R.layout.fragment_news_feed, container, false);
postRecyclerView = (RecyclerView) view.findViewById(R.id.postRecyclerView);
postRecyclerView.addOnScrollListener(new RecyclerView.OnScrollListener() {
#Override
public void onScrollStateChanged(RecyclerView recyclerView, int newState) {
super.onScrollStateChanged(recyclerView, newState);
}
#Override
public void onScrolled(RecyclerView postRecyclerView, int dx, int dy) {
super.onScrolled(postRecyclerView, dx, dy);
int lastVisiableItemInPostList = linearLayoutManager.findLastVisibleItemPosition();
if(lastScroolItemInPost < lastVisiableItemInPostList)
{
if(lastScroolItemInPost == 1)
{
initViewModel((int) (lastScroolItemInPost + 2), ( lastScroolItemInPost - 2 ) , false);
lastScroolItemInPost += 2;
}else{
initViewModel((int) (lastScroolItemInPost + 2), ( lastScroolItemInPost - 2 ) , false );
lastScroolItemInPost += 2;
}
}
}
});
posts = new ArrayList<>();
postRecyclerView.setLayoutManager(linearLayoutManager);
postsAdapter = new PostsAdapter(ownerActivity,posts,timelineViewModel);
postRecyclerView.setAdapter(postsAdapter);
swipeRefresh = (SwipyRefreshLayout) view.findViewById(R.id.swipeRefresh);
swipeRefresh.setOnRefreshListener(new SwipyRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh(SwipyRefreshLayoutDirection direction) {
if(direction == SwipyRefreshLayoutDirection.TOP){
timelineViewModel.fetchPosts2();
}
if(direction == SwipyRefreshLayoutDirection.BOTTOM){
timelineViewModel.fetchPosts();
}
}
});
return view;
}
private void initViewModel(int lastVisiableItemInPostList , long lastScroolItemInPost , boolean isFirstTimeOpenFeedFragment) {
TimelineViewModel.Factory factory = new TimelineViewModel.Factory(UserPreferences.getToken(ownerActivity), TaskUtils.getMySelfContact(ownerActivity));
timelineViewModel = ViewModelProviders.of(this,factory).get(TimelineViewModel.class);
timelineViewModel.getPostList().observe(this, new Observer<List<Post>>() {
#Override
public void onChanged(#Nullable List<Post> posts) {
postsAdapter.setPostList(posts);
swipeRefresh.setRefreshing(false);
}
});
timelineViewModel.getPostDeleted().observe(this, new Observer<Boolean>() {
#Override
public void onChanged(#Nullable Boolean aBoolean) {
if(aBoolean){
postsAdapter.setPostList(Post.getAll());
}
}
});
timelineViewModel.init( lastVisiableItemInPostList , lastScroolItemInPost ,isFirstTimeOpenFeedFragment);
}
}
ViewModel :
public class TimelineViewModel extends FCViewModel implements PostDetailsDownloadManager.PostDetailDownloadedListener,OnContactReceivedListner{
public TimelineViewModel(String token,Contact user){
super(token);
this.user = user;
post = new MutableLiveData<>();
postDeleted = new MutableLiveData<>();
}
public void init(int lastVisiableItemInPostList , long lastScroolItemInPost , boolean isFirstTimeOpenFeedFragment){
repository =
//postDetailsDownloadManager = ServiceLocator.getServiceLocator().postDetailsDownloadManager;
likePostDownloadManager = ServiceLocator.getServiceLocator().likePostDownloadManager;
likePostDownloadManager.setPostDetailDownloadedListener(new DataDownloadManager.DataDownloadedListener<LikePostTouple>() {
#Override
public void onDataDownloaded(List<LikePostTouple> dataTouple) {
TimelineViewModel.this.post.setValue(Post.getAll());
}
#Override
public void onSingleDataDownloaded(LikePostTouple dataTouple) {
}
});
postDetailDownloadManager = ServiceLocator.getServiceLocator().postDetailDownloadManager;
postDetailDownloadManager.setPostDetailDownloadedListener(new DataDownloadManager.DataDownloadedListener<PostTouple>() {
#Override
public void onDataDownloaded(List<PostTouple> dataTouple) {
TimelineViewModel.this.post.setValue(Post.getAll());
}
#Override
public void onSingleDataDownloaded(PostTouple dataTouple) {
}
});
post.setValue(Post.getAll());
if(isFirstTimeOpenFeedFragment)
{
fetchPosts2();
}
try {
if(Post.getAll().size() > 0)
{
List<Post> tempPosts = Post.getAll();
List<Post> passList = tempPosts.subList( (int) lastScroolItemInPost ,lastVisiableItemInPostList);
fetchLikesOfPosts(passList);
}else{
fetchLikesOfPosts(Post.getAll());
}
} catch (Exception e) {
e.printStackTrace();
}
Log.d("Testing Injecting", repository.toString());
}
public LiveData<List<Post>> getPostList() {
return post;
}
public MutableLiveData<Boolean> getPostDeleted() {
return postDeleted;
}
boolean isContactFetched = false;
public void fetchPosts(){
if(Contact.getAll().size() < 1){
fetchContacts();
return;
}
Map<String,Object> requestData = new HashMap<>();
requestData.put("type",1);
requestData.put("cpid",Post.getLastPid());
isDataLoading = true;
repository.getData(new Repository.DataFetchedListener<List<Post>>() {
#Override
public void onDataFetched(List<Post> posts) {
isDataLoading = false;
Log.d("fetched posts",""+posts.size());
post.setValue(Post.getAll());
fetchPostDetails(posts);
if(posts.size() > 0){
fetchLikesOfPosts(posts);
}
}
},requestData);
}
private boolean isDataLoading = false;
public void fetchPosts2(){
if(Contact.getAll().size() < 1){
fetchContacts();
return;
}
Map<String,Object> requestData = new HashMap<>();
requestData.put("type",2);
requestData.put("cpid", Post.getFirstPid()); // cpid means cursor pid
isDataLoading = true;
repository.getData(new Repository.DataFetchedListener<List<Post>>() {
#Override
public void onDataFetched(List<Post> posts) {
isDataLoading = false;
Log.d("fetched posts",""+posts.size());
post.setValue(Post.getAll());
fetchPostDetails(posts);
if(posts.size() > 0){
fetchLikesOfPosts(posts);
}
}
},requestData);
}
public boolean isDataLoading() {
return isDataLoading;
}
private void fetchContacts() {
contactRepository.getData(new Repository.DataFetchedListener<List<Contact>>() {
#Override
public void onDataFetched(List<Contact> data) {
if(data.size()>0 && !isContactFetched) {
fetchPosts2();
isContactFetched = true;
}
}
},null);
}
#NonNull
private PostTouple getPostToubleFromPost(Post post) throws JSONException {
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();
String json = gson.toJson(post);
JSONObject postJson = new JSONObject(json);
return new PostTouple(postJson,post.getPid());
}
#NonNull
private LikePostTouple getLkePostToupleFromPost(Post post) throws JSONException {
Gson gson = new GsonBuilder().excludeFieldsWithoutExposeAnnotation().create();
String json = gson.toJson(post);
JSONObject postJson = new JSONObject(json);
return new LikePostTouple(postJson,post.getPid());
}
public void giveLike(String token, final long pid){
Map<String,Object> requestData = new HashMap<>();
requestData.put("token",token);
requestData.put("pid",Long.toString(pid));
likeRepository.postData(new Repository.DataFetchedListener<Post>() {
#Override
public void onDataFetched(Post data) {
Log.d("Like post", data.toString());
Post post = getPostById(pid);
post.setLikes(data.getLikes());
post.setComments(data.getComments());
TimelineViewModel.this.post.setValue(TimelineViewModel.this.post.getValue());
fetchLikesOfLikedPost(data);
}
},requestData);
}
private void fetchLikesOfLikedPost(Post data) {
try {
likePostDownloadManager.addItemInQueue(getLkePostToupleFromPost(data));
likePostDownloadManager.startDownload();
} catch (JSONException e) {
e.printStackTrace();
}
}
private Post getPostById(long pid){
List<Post> posts = post.getValue();
for(Post post : posts){
if(post.getPid()==pid){
return post;
}
}
return null;
}
public Contact getSenderContactFromComment(Post post) {
if(post.getPqrc().equals(user.getUserId())){
return user;
}
Contact contact = Contact.getByUserId(post.getPqrc());
return contact;
}
public String getDescriptionForType5(Post post,String message){
try {
PostDetail postDetail = PostDetail.getByPostId(post.getPid());
if(postDetail!=null) {
String qrc = JSonUtils.qrcFromCntOfPostDetails(postDetail.getContent());
int sid = JSonUtils.skillidFromCntOfPostDetails(postDetail.getContent());
if (qrc == null || sid == 0) {
return "";
}
SkillDb skill = SkillDb.getBySId(Integer.toString(sid));
Contact contact = getPosterContact(post.getPqrc());
return contact.getName() + " " + message + " " + skill.getSkillName() + ".";
}
return "";
} catch (Exception e) {
e.printStackTrace();
}
return "";
}
public String getDescriptionForPost(Post post, String message){
if(post.getCtype()==1){
return post.getDescr();
}
if(post.getCtype() == 2){
String postDetail = getContent(post);
if (postDetail != null) return Html.fromHtml(""+postDetail+"").toString();
}
if(post.getCtype()==5){
return getDescriptionForType5(post, message);
}
return "";
}
#Nullable
public String getContent(Post post) {
PostDetail postDetail = PostDetail.getByPostId(post.getPid());
if(postDetail!=null){
return postDetail.getContent();
}
return null;
}
public Contact getPosterContact(String qrc){
try {
String userqrc = user.getUserId();
if (userqrc.equals(qrc)) {
return user;
}
}catch (Exception e){
e.printStackTrace();
}
try {
return Contact.getByUserId(qrc);
}catch (Exception e){
e.printStackTrace();
}
return null;
}
public void fetchUrlPreview(String url, final UrlMetaDataFetchListener metaDataFetchListener){
String modifiedUrl = !url.contains("http://")&&!url.contains("https://")? "http://"+url : url;
TextCrawler textCrawler = new TextCrawler();
LinkPreviewCallback linkPreviewCallback = new LinkPreviewCallback() {
#Override
public void onPre() {
}
#Override
public void onPos(SourceContent sourceContent, boolean b) {
String imageUrl = sourceContent.getImages().isEmpty()? "" : sourceContent.getImages().get(0);
metaDataFetchListener.onMetaDataFetched(sourceContent.getTitle(),sourceContent.getDescription(), imageUrl);
}
};
textCrawler.makePreview(linkPreviewCallback, modifiedUrl,1);
}
public interface UrlMetaDataFetchListener{
void onMetaDataFetched(String title, String description, String imageUrl);
}
#Override
public void onPostDownloaded(PostTouple postTouple) {
this.post.setValue(Post.getAll());
}
#Override
public void onContactsReceived() {
fetchPosts();
}
public void deletePost(long pid) {
Map<String, Object> requestData = new HashMap<>();
requestData.put("token",token);
requestData.put("pid",pid);
repository.postData(new Repository.DataFetchedListener<Post>() {
#Override
public void onDataFetched(Post data) {
postDeleted.setValue(data!=null);
}
},requestData);
}
public boolean isMyPost(Post post){
return user.getUserId().equals(post.getPqrc());
}
public static class Factory extends ViewModelProvider.NewInstanceFactory {
private String token;
private Contact user;
public Factory(String token,Contact user) {
this.token = token;
this.user = user;
}
#Override
public <T extends ViewModel> T create(Class<T> modelClass) {
return (T) new TimelineViewModel(token,user);
}
}
}
Adapter :
public class PostsAdapter extends RecyclerView.Adapter {
private Context context;
private List<Post> postList;
private int[] badges = {R.drawable.badge1, R.drawable.badge2, R.drawable.badge3};
private List<Integer> randomNumbers = Utils.getRandomNumberList(2,true);
private ArrayDeque<Integer> randomQueue = new ArrayDeque<>(randomNumbers);
private static Map<Long,URLPreview> urlPreviewMap = new HashMap<>();
private TimelineViewModel timelineViewModel;
public PostsAdapter(Context context, List<Post> postList, TimelineViewModel timelineViewModel){
super();
this.context = context;
this.postList = postList;
this.timelineViewModel = timelineViewModel;
}
#Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.post_item_layout, null);
PostViewHolder postViewHolder = new PostViewHolder(view);
postViewHolder.setIsRecyclable(false);
return postViewHolder;
}
#Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, final int position) {
final Post post = postList.get(position);
final PostViewHolder postViewHolder = (PostViewHolder) holder;
final String postDetail = timelineViewModel.getDescriptionForPost(post,context.getResources().getString(R.string.postType5message));
setPostDescription(post, postViewHolder, postDetail);
handlePreviewVisibility(post, postViewHolder);
postViewHolder.setLikes(""+post.getLikes()+" Likes");
postViewHolder.setCommentCount("" + post.getComments() + " Comments");
postViewHolder.setSupDescription("Posted By System");
int randomNumber = getRandomNumber();
postViewHolder.setBadgeIcon(badges[randomNumber]);
setPostLikedIndicator(post, postViewHolder);
postViewHolder.getLikeButtonWrapper().setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
giveLikeToPost(post);
if(post.getIsLiked() == 0) {
post.setLikes(post.getLikes() + 1);
postViewHolder.setLikes("" + post.getLikes() + " Likes");
post.setIsLiked(1);
setPostLikedIndicator(post, postViewHolder);
}
}
});
postViewHolder.getCommentPanel().setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
CommentPostFragment fragment = CommentPostFragment.GetInstance(post.getPid());
ViewUtils.launchFragmentKeepingInBackStack(context,fragment);
}
});
Contact contact = timelineViewModel.getPosterContact(post.getPqrc());
if(contact!=null && TaskUtils.isNotEmpty(contact.getImageToken())){
Utils.setImageToImageView(postViewHolder.getPosterImage(),timelineViewModel.getToken(),contact.getImageToken());
postViewHolder.getPosterNameTextView().setText(contact.getName());
}
postViewHolder.getPostingDate().setText(Utils.getDateFromMilliseconds(post.getdC()));
if(post.getCtype() != 3)
{
postViewHolder.contentImage.setVisibility(View.GONE);
postViewHolder.fullScreenIndicatorIcon.setVisibility(View.GONE);
}
if(post.getCtype() == 3){
setContentOfType3(post, postViewHolder);
}
}
#Override
public void onViewRecycled(RecyclerView.ViewHolder holder) {
super.onViewRecycled(holder);
PostViewHolder viewHolder = (PostViewHolder) holder;
viewHolder.pTitle.setText("");
viewHolder.pDescription.setText("");
viewHolder.pImage.setImageDrawable(null);
}
private void handlePreviewVisibility(Post post, PostViewHolder postViewHolder) {
if(post.getCtype()==2){
postViewHolder.preview.setVisibility(View.VISIBLE);
}else{
postViewHolder.preview.setVisibility(View.GONE);
}
}
private void handleShowingOptionsIcon(Post post, PostViewHolder postViewHolder) {
if(post.getCtype()!=5 && timelineViewModel.isMyPost(post)){
postViewHolder.options.setVisibility(View.VISIBLE);
}else{
postViewHolder.options.setVisibility(View.GONE);
}
}
private void giveLikeToPost(Post post) {
post.setLikes(post.getLikes()+1);
post.setIsLiked(1);
//notifyDataSetChanged();
timelineViewModel.giveLike(UserPreferences.getToken(context),post.getPid());
}
private void setPostLikedIndicator(Post post, PostViewHolder postViewHolder) {
if(post.getIsLiked()==1) {
postViewHolder.getLikeButton().setImageDrawable(ResourcesCompat.getDrawable(context.getResources(), R.drawable.ic_like_red, null));
}else{
postViewHolder.getLikeButton().setImageDrawable(ResourcesCompat.getDrawable(context.getResources(), R.drawable.ic_like_filled, null));
}
}
private void setPostDescription(final Post post, final PostViewHolder postViewHolder, final String postDetail) {
if(post.getCtype()==2){
String postDescription = "<p>"+ post.getDescr()+"</p>";
postViewHolder.description.setText( Html.fromHtml(postDescription +""+postDetail+"") );
postViewHolder.descriptionContainer.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
String url = !postDetail.contains("http://")&&!postDetail.contains("https://")? "http://"+postDetail : postDetail;
Uri uri = Uri.parse(url);
context.startActivity(new Intent(Intent.ACTION_VIEW,uri));
}
});
URLPreview urlPreview = null;
if((urlPreview=urlPreviewMap.get(post.getPid()))==null) {
timelineViewModel.fetchUrlPreview(postDetail, new TimelineViewModel.UrlMetaDataFetchListener() {
#Override
public void onMetaDataFetched(String title, String description, String imageUrl) {
showURLPreview(title, description, imageUrl, postViewHolder);
urlPreviewMap.put(post.getPid(),new URLPreview(title,description,imageUrl));
}
});
}else {
showURLPreview(urlPreview.getTitle(),urlPreview.getDescription(),urlPreview.getImageUrl(),postViewHolder);
}
}else if(post.getCtype() == 3)
{
String postDescription = post.getDescr();
postViewHolder.description.setText(postDescription);
}
else {
postViewHolder.setDescription(postDetail);
}
}
private void initImageClickListener(final ImageView imageView, final String pictureLink) {
imageView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
List<String> pictureLinks = new ArrayList<String>();
pictureLinks.add(pictureLink);
int[] screenLocation = new int[2];
imageView.getLocationOnScreen(screenLocation);
ImagePagerFragment imagePagerFragment = ImagePagerFragment.newInstance(pictureLinks, 0, screenLocation, imageView.getWidth(), imageView.getHeight());
ViewUtils.launchPopUpFragmentUpdated(context, imagePagerFragment);
}
});
}
private void showURLPreview(String title, String description, String imageUrl, PostViewHolder postViewHolder) {
context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
if(!TaskUtils.isEmpty(imageUrl)) {
Picasso.with(context)
.load(imageUrl)
.into(postViewHolder.pImage);
}
view.findViewById(R.id.description);
postViewHolder.pTitle.setText(title);
postViewHolder.pDescription.setText(description);
}
#Override
public int getItemCount() {
return postList.size();
}
private int getRandomNumber(){
if(!randomQueue.isEmpty()){
return randomQueue.poll();
}
randomQueue = new ArrayDeque<>(randomNumbers);
return randomQueue.poll();
}
public void setPostList(List<Post> postList) {
this.postList = postList;
notifyDataSetChanged();
Log.d("Data rec", postList.size()+"");
}
class PostViewHolder extends RecyclerView.ViewHolder implements PopupMenu.OnMenuItemClickListener {
}
public void setLikes(String likes) {
this.likes.setText(likes);
}
public void setCommentCount(String commentCount)
{
this.commentCount.setText(commentCount);
}
public void setDescription(String description){
this.description.setText(description);
}
public void setSupDescription(String subDescription){
this.supDescription.setText(subDescription);
}
public void setBadgeIcon(int resID){
Utils.setImageViewFromResource(badgeIcon,resID);
}
public ImageView getLikeButton() {
return likeButton;
}
public RelativeLayout getLikeButtonWrapper()
{
return likeButtonWrapper;
}
public ImageView getCommentButton() {
return commentButton;
}
public ImageView getPosterImage() {
return posterImage;
}
public TextView getPosterNameTextView() {
return posterNameTextView;
}
public TextView getPostingDate() {
return postingDate;
}
public RelativeLayout getCommentPanel() {
return commentPanel;
}
#Override
public boolean onMenuItemClick(MenuItem item) {
timelineViewModel.deletePost(postList.get(getAdapterPosition()).getPid());
return false;
}
}
}
I'm developing an Android app using Google Sheets as a database.
I have information about books in a Google Sheet (title, author, cover, date, etc). I want to retrieve this information and show it in a "Listview" in the "Spreadsheets" Activity. I created a "BookItem" object and an "BookAdapter" adapter. In the "Spreadsheets.java" I have the read method, called "getDataFromApi()". I know that this method works, but I don't know how to adapt it to my "BookAdapter" and show the information on the ListView.
This is mi code:
public class BookItem {
static String title_item;
static Drawable cover_item; //probar con String
public BookItem(String title, Drawable cover){
super();
this.title_item = title;
this.cover_item = cover;
}
public String getTitle() {
return title_item;
}
public void setTitle(String title){
this.title_item = title;
}
public static Drawable getCover() {
return cover_item;
}
public void setCover(Drawable cover) {
this.cover_item = cover;}
This is my BookAdapter:
public class BookAdapter extends BaseAdapter {
private ArrayList<BookItem> items;
List<BookItem> items;
private Context context;
public BookAdapter (Context context, List<BookItem> items) {
this.context = context;
this.items = items;
}
#Override
public int getCount() {
return items.size();
}
#Override
public BookItem getItem(int position) {
return this.items.get(position);
}
#Override
public long getItemId(int i) {
return 0;
}
private static class ViewHolder {
public final ImageView cover_item;
public final TextView title_item;
public ViewHolder (ImageView cover_item, TextView title_item){
this.cover_item = cover_item;
this.title_item = title_item;
}
}
#Override
public View getView (int position, View view, ViewGroup viewGroup) {
ImageView cover_item;
TextView title_item;
if (view == null) {
view = LayoutInflater.from(context).inflate(R.layout.fila_lista_miestanteria, viewGroup, false); //se mete aqui en getView por ser baseAdapter
title_item = (TextView) view.findViewById(R.id.book_title_item);
cover_item = (ImageView) view.findViewById(R.id.book_cover_item);
view.setTag(R.id.book_title_item, title_item);
view.setTag(R.id.book_cover_item, cover_item);
}
else {
cover_item = (ImageView) view.getTag(R.id.book_cover_item);
title_item = (TextView)view.getTag(R.id.book_title_item);
}
BookItem bookItem = getItem(position);
cover_item.setImageDrawable(bookItem.getCover());
title_item.setText(bookItem.getTitle());
return view;
}
}
public class Spreadsheets extends Activity {
static String book_title, book_author, book_date, book_category, book_description, book_rating, book_cover;
static String read_only = "no";
static String book_favorite = "no";
static GoogleAccountCredential mCredential;
private ListView bookList;
private TextView mOutputText;
ProgressDialog mProgress;
Context context;
List<String> rst;
List<BookItem> resultados;
BookAdapter adapter;
private static final String[] SCOPES = {SheetsScopes.SPREADSHEETS};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.spread);
// mOutputText = (TextView) findViewById(R.id.outputText);
bookList = (ListView) findViewById(R.id.bookList);
// mOutputText.setText("");
mProgress = new ProgressDialog(this);
mProgress.setMessage("Calling Google Sheets...");
// Initialize credentials and service object.
mCredential = GoogleAccountCredential.usingOAuth2(
getApplicationContext(), Arrays.asList(SCOPES))
.setBackOff(new ExponentialBackOff());
System.out.print("read only es igual a "+ read_only);
new MakeRequestTask(mCredential).execute();
}
public void rellenar(){
System.out.println("VOY A HACER NEW BOOK ADAPTER ");
adapter = new BookAdapter(context, resultados);
bookList.setAdapter(adapter);
System.out.println("SETADAPTER");
}
private class MakeRequestTask extends AsyncTask<Void, Void, List<String>> {
private Exception mLastError = null;
MakeRequestTask(GoogleAccountCredential credential) {
}
#Override
protected List<String> doInBackground(Void... params) {
try {
if(read_only.equals("no")) {
setDataToApi();
return null;
}
else {
return getDataFromApi();
}
} catch (Exception e) {
mLastError = e;
cancel(true);
return null;
}
}
private List<String> getDataFromApi() throws IOException {
String range = "Sheet1!A1:H";
List<String> results = new ArrayList<String>();
ValueRange response = CreateSpreadsheets.mService.spreadsheets().values()
.get(CreateSpreadsheets.spreadsheet_id, range)
.execute();
List<List<Object>> values = response.getValues();
if (values != null) {
for (List row : values) {
results.add(row.get(0) + ", " + row.get(7));
}
}
//funcion();
return results;
}
private void setDataToApi() throws IOException {
String range = "Sheet1!A2:H";
List<List<Object>> values = new ArrayList<>();
List<Object> data1 = new ArrayList<>();
data1.add(book_title);
data1.add(book_author);
data1.add(book_date);
data1.add(book_category);
data1.add(book_description);
data1.add(book_rating);
data1.add(book_cover);
data1.add("a");
values.add(data1);
ValueRange valueRange = new ValueRange();
valueRange.setMajorDimension("ROWS");
valueRange.setRange(range);
valueRange.setValues(values);
ValueRange body = new ValueRange().setValues(values);
AppendValuesResponse response =
CreateSpreadsheets.mService.spreadsheets().values().append(CreateSpreadsheets.spreadsheet_id, range, body)
.setValueInputOption("RAW")
.execute();
}
#Override
protected void onPreExecute() {
//mOutputText.setText("");
mProgress.show();
}
#Override
protected void onPostExecute(List<String> output) {
mProgress.hide();
if (output == null || output.size() == 0) {
// mOutputText.setText("No results returned.");
} else {
if(read_only.equals("no")) {
Intent intent = new Intent(Spreadsheets.this, MainActivity.class);
startActivity(intent);
// mOutputText.setText("Se ha añadido un libro a su lista");
}
else {
System.out.println("VOY A RELLENAR LA LISTA");
rellenar();
}
}
}
#Override
protected void onCancelled() {
}
}
}
The "spread.xml" is a list, and the "fila_list_miestanteria.xml" is a TextView&ImageView to show the book info.
Thank you so much!
Trying to convert JSON array to list of objects using Gson library.
Code:
TypeToken<List<Comment>> token = new TypeToken<List<Comment>>() {}; //this line throws the following exception
public class Comment implements Serializable{
#SerializedName("id")
private int mID;
#SerializedName("content")
private String mContent;
#SerializedName("author")
private String mAuthor;
#SerializedName("author_id")
private int mAuthorID;
#SerializedName("author_email")
private String mAuthorEmail;
#SerializedName("date")
private String mDate;
#SerializedName("name")
private String mName;
#SerializedName("image")
private String mImage;
public int getmID() {
return mID;
}
public void setmID(int mID) {
this.mID = mID;
}
public String getmContent() {
return mContent;
}
public void setmContent(String mContent) {
this.mContent = mContent;
}
public String getmAuthor() {
return mAuthor;
}
public void setmAuthor(String mAuthor) {
this.mAuthor = mAuthor;
}
public int getmAuthorID() {
return mAuthorID;
}
public void setmAuthorID(int mAuthorID) {
this.mAuthorID = mAuthorID;
}
public String getmAuthorEmail() {
return mAuthorEmail;
}
public void setmAuthorEmail(String mAuthorEmail) {
this.mAuthorEmail = mAuthorEmail;
}
public String getmDate() {
return mDate;
}
public void setmDate(String mDate) {
this.mDate = mDate;
}
public String getmName() {
return mName;
}
public void setmName(String mName) {
this.mName = mName;
}
public String getmImage() {
return mImage;
}
public void setmImage(String mImage) {
this.mImage = mImage;
}
}
public class CommentListingActivity extends BaseActivity implements View.OnClickListener {
private static final String TAG = "CommentListingActivity";
private ListView mListViewComments;
private CommentAdapter mCommentAdapter;
private ArrayList<Comment> mCommentList = new ArrayList<Comment>();
private ProgressBar mProgressBar;
private TextView mTextViewErrorMessage;
private Button mButtonRefresh;
private LinearLayout mLinearLayoutError;
private int mPostID;
private boolean isCommentListLoading = true;
private EditText mEditTextComment;
private ImageView mImageViewSend;
private InputMethodManager mInputMethodManager;
private SwipeRefreshLayout mSwipeRefreshLayout;
private boolean mIsRefreshing = false;
private int mOffset = 0;
private View mProgressBarView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_comment_listing);
mPostID = getIntent().getIntExtra("postID",0);
setToolbar();
setToolBarTitle(getString(R.string.commentsLabel));
setToolbarHomeAsUpEnabled(true);
mSwipeRefreshLayout = (SwipeRefreshLayout) findViewById(R.id.swipeRefreshLayout);
mSwipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
#Override
public void onRefresh() {
mSwipeRefreshLayout.setRefreshing(false);
mIsRefreshing = true;
mOffset = 0;
fetchComments();
}
});
mListViewComments = (ListView) findViewById(R.id.listViewComments);
mCommentAdapter = new CommentAdapter(this, mCommentList,mImageLoader);
mListViewComments.setAdapter(mCommentAdapter);
mProgressBarView = getLayoutInflater().inflate(R.layout.recyclerview_loading_item,null);
mListViewComments.addFooterView(mProgressBarView);
// set the custom dialog components - text, image and button
mEditTextComment = (EditText) findViewById(R.id.editTextComment);
mImageViewSend = (ImageView) findViewById(R.id.imageViewSend);
mImageViewSend.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
postComment();
}
});
mEditTextComment.requestFocus();
mInputMethodManager = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
mInputMethodManager.toggleSoftInput(InputMethodManager.SHOW_FORCED, 0);
initProgressBar();
initErrorView();
mListViewComments.setOnScrollListener(new EndlessScrollListener() {
#Override
public boolean onLoadMore(int page, int totalItemsCount) {
mOffset = mOffset + LIST_LIMIT;
mListViewComments.addFooterView(mProgressBarView);
fetchComments();
return true;
}
});
fetchComments();
}
private void fetchComments(){
if (!mIsRefreshing && mCommentAdapter.getCount()==0)
showProgressBar();
HashMap<String,String> parameters = new HashMap<String, String>();
parameters.put("post",String.valueOf(mPostID));
parameters.put("offset",String.valueOf(mOffset));
NetworkUtility.getJSONRquest(this, APIURLs.LIST_COMMENTS, parameters, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
//Remove loading item
if(mCommentList.size()>0) {
mListViewComments.removeFooterView(mProgressBarView);
}
try {
if(response.getString(API_KEY_STATUS).equalsIgnoreCase(API_RESPONSE_SUCCESS)){
JSONArray jsonArrayComments = response.getJSONArray(API_KEY_DATA);
if(jsonArrayComments.length()>0) {
if (mIsRefreshing) {
mCommentList.clear();
mCommentAdapter.notifyDataSetChanged();
}
TypeToken<List<Comment>> token = new TypeToken<List<Comment>>() {};
mCommentList.addAll((Collection<? extends Comment>) GsonUtility.convertJSONStringToObject(jsonArrayComments.toString(), token));
mCommentAdapter.notifyDataSetChanged();
}
mIsRefreshing = false;
if(mCommentAdapter.getCount()>0) {
showContent();
} else {
if (mOffset == 0)
showError("No comments found.");
}
} else {
mProgressBarView.setVisibility(View.GONE);
if(mCommentAdapter.getCount()>0){
AlertDialogUtility.showErrorMessage(CommentListingActivity.this,getString(R.string.errorLabel),response.getString(API_KEY_MESSAGE),getString(R.string.okLabel),null,null,null);
} else
showError(response.getString(API_KEY_MESSAGE));
}
} catch (JSONException e) {
e.printStackTrace();
mProgressBarView.setVisibility(View.GONE);
if(mCommentAdapter.getCount()>0){
AlertDialogUtility.showErrorMessage(CommentListingActivity.this,getString(R.string.errorLabel),getString(R.string.volleyErrorMessage),getString(R.string.okLabel),null,null,null);
} else {
showError(getString(R.string.volleyErrorMessage));
}
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
mProgressBarView.setVisibility(View.GONE);
if(mCommentAdapter.getCount()>0){
AlertDialogUtility.showErrorMessage(CommentListingActivity.this,getString(R.string.errorLabel),getString(R.string.volleyErrorMessage),getString(R.string.okLabel),null,null,null);
} else {
showError(error.getCause().getMessage());
}
error.printStackTrace();
}
},null,TAG);
}
private void postComment() {
final AppProgressDialog appProgressDialog = new AppProgressDialog(this);
appProgressDialog.setProgressDialogTitle("Posting Comment");
appProgressDialog.setProgressDialogMessage("Please Wait...");
appProgressDialog.showProgressDialog();
try {
final String comment = mEditTextComment.getText().toString();
if (!ValidatorUtility.isBlank(comment) && mPostID!=0) {
JSONObject jsonData = new JSONObject();
jsonData.put("content",comment);
jsonData.put("post",mPostID);
NetworkUtility.postRquestWithBasicAuth(this, APIURLs.POST_COMMENT, new Response.Listener<JSONObject>() {
#Override
public void onResponse(JSONObject response) {
try {
if(response.has("id") && response.getInt("id")>0){
AppToast.toastLong(mContext,"Comment Added");
Comment objComment = new Comment();
if (response.has("author_name"))
objComment.setmAuthor(response.getString("author_name"));
if (response.has("author_email"))
objComment.setmAuthorEmail(response.getString("author_email"));
if (response.has("author"))
objComment.setmAuthorID(response.getInt("author"));
objComment.setmContent(comment);
if (response.has("date"))
objComment.setmDate(response.getString("date"));
if (response.has("id"))
objComment.setmID(response.getInt("id"));
objComment.setmImage(mUser.getImage());
objComment.setmName(mUser.getName());
mCommentList.add(0,objComment);
mCommentAdapter.notifyDataSetChanged();
mEditTextComment.setText(null);
mEditTextComment.clearFocus();
mInputMethodManager.hideSoftInputFromWindow(mEditTextComment.getWindowToken(),0);
showContent();
} else {
AlertDialogUtility.showErrorMessage(CommentListingActivity.this,getString(R.string.errorLabel),"Failed to add comment. Please try again later.",getString(R.string.okLabel),null,null,null);
}
} catch (JSONException e) {
e.printStackTrace();
} finally {
appProgressDialog.dismissProgressDialog();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
appProgressDialog.dismissProgressDialog();
AlertDialogUtility.showErrorMessage(CommentListingActivity.this,getString(R.string.errorLabel),error.getCause().getMessage(),getString(R.string.okLabel),null,null,null);
}
}, jsonData, TAG);
} else {
appProgressDialog.dismissProgressDialog();
}
} catch (Exception e){
e.printStackTrace();
appProgressDialog.dismissProgressDialog();
}
}
private void initProgressBar(){
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
}
private void initErrorView(){
mLinearLayoutError = (LinearLayout) findViewById(R.id.linearLayoutError);
mTextViewErrorMessage = (TextView) findViewById(R.id.textViewErrorMessage);
mButtonRefresh = (Button) findViewById(R.id.buttonRefresh);
mButtonRefresh.setOnClickListener(this);
}
private void showProgressBar(){
mProgressBar.setVisibility(View.VISIBLE);
mLinearLayoutError.setVisibility(View.GONE);
mSwipeRefreshLayout.setVisibility(View.GONE);
}
private void showContent(){
mProgressBar.setVisibility(View.GONE);
mLinearLayoutError.setVisibility(View.GONE);
mSwipeRefreshLayout.setVisibility(View.VISIBLE);
}
private void showError(String message){
mProgressBar.setVisibility(View.GONE);
mLinearLayoutError.setVisibility(View.VISIBLE);
mSwipeRefreshLayout.setVisibility(View.GONE);
mTextViewErrorMessage.setText(message);
}
#Override
public void onClick(View view) {
if(view == mButtonRefresh){
fetchComments();
}
}
#Override
protected void onDestroy() {
super.onDestroy();
KeyboardUtility.closeKeyboard(this,mEditTextComment);
}
}
Exception:
Method threw 'java.lang.NullPointerException' exception. Cannot evaluate app.govindaconnect.mangaltaraproductions.com.views.CommentListingActivity$4$1.toString()
Only 1 JSON objects get converted and added to the list.
What might be causing the exception? Because this is not happening with other classes.
You can try this
replace this line
TypeToken<List<Comment>> token = new TypeToken<List<Comment>>() {};
with this and try
Type token = new TypeToken<List<Comment>>() {}.getType();
List<Comment> commentsList = gson.fromJson(String.valueOf(resultArray), type);
I took JSON array in a string variable and then it started working.
why don't you try Jackson parser for conversion, it's much simpler and easier
example for you :
List<Comment> list=null;
String json="your json array";
ObjectMapper mapper = new ObjectMapper();
try {
list= mapper.readValue(json, new TypeReference<List<Comment>>(){});
} catch (IOException e) {
throw new Exception(e);
}
I have a ListView with the sections. And when there is a section, then it takes the place of another. That is, if the ListView items count 30, the section takes the place of the first paragraph, and it turns out that the show only 29 points.
Here is a picture, which shows clearly
Tried TYPE_MAX_COUNT = 2, 3. Without confusing.
#Override
public int getViewTypeCount() {
return TYPE_MAX_COUNT;
}
I think getViewTypeCount() is triggered after getView().
private List<VacancyModel> vacancyModelList;
private LayoutInflater inflater;
private SQLHelper sqlHelper;
private static final int TYPE_SEPARATOR = 1;
private static final int TYPE_ITEM = 0;
private int rowType;
public static String saveLastDate;
private int newRecs = 0;
public SuitableAdapter(Context context, int resource, List<VacancyModel> objects) {
super(context, resource, objects);
vacancyModelList = objects;
sqlHelper = new SQLHelper(getContext());
inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#NonNull
#Override
public View getView(final int position, View convertView, #NonNull final ViewGroup parent) {
ViewHolder holder = null;
rowType = getItemViewType(position);
if (convertView == null) {
holder = new ViewHolder();
switch (rowType) {
case TYPE_SEPARATOR:
convertView = inflater.inflate(R.layout.suitable_separator_layout, null);
holder.headerTv = (TextView) convertView.findViewById(R.id.section_header);
break;
case TYPE_ITEM:
convertView = inflater.inflate(R.layout.row_layout, null);
holder.tvProfession = (TextView) convertView.findViewById(R.id.tvProfession);
holder.tvHeader = (TextView) convertView.findViewById(R.id.tvHeader);
holder.tvSalary = (TextView) convertView.findViewById(R.id.tvSalary);
holder.tvDate = (TextView) convertView.findViewById(R.id.tvPostCr);
break;
}
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
if (getItemViewType(position) == TYPE_SEPARATOR) {
holder.headerTv = (TextView) convertView.findViewById(R.id.section_header);
if (newRecs == 1) {
holder.headerTv.setText("Новые вакансии");
newRecs = 0;
} else {
holder.headerTv.setText("Ранее просмотренные");
}
}
if (getItemViewType(position) == TYPE_ITEM) {
final VacancyModel model = vacancyModelList.get(position);
holder.tvProfession.setText(model.getProfession());
holder.tvHeader.setText(model.getHeader());
holder.tvSalary.setText(model.getSalary());
holder.tvDate.setText(model.getDate());
Date date;
try {
if (saveLastDate == null) {
saveLastDate = model.getDate();
} else {
date = stringToDate(saveLastDate);
if (date.before(stringToDate(model.getDate()))) {
saveLastDate = model.getDate();
}
}
} catch (ParseException e) {
e.printStackTrace();
}
}
return convertView;
}
#Override
public int getItemViewType(int position) {
if (GlobalData.LoadDate(getContext()) == null) {
return TYPE_ITEM;
} else {
VacancyModel model = getItem(position);
if (model != null) {
String newString = model.getDate();
String lastString = GlobalData.LoadDate(getContext());
Date newDate = null;
Date lastDate = null;
try {
newDate = stringToDate(newString);
lastDate = stringToDate(lastString);
} catch (ParseException e) {
e.printStackTrace();
}
assert newDate != null;
if (newDate.equals(lastDate)) {
return TYPE_SEPARATOR;
} else if (position == 0 && newDate.after(lastDate)) {
newRecs = 1;
return TYPE_SEPARATOR;
} else {
return TYPE_ITEM;
}
} else {
return TYPE_ITEM;
}
}
}
#Override
public int getViewTypeCount() {
return 3;
}
#Override
public int getCount() {
return vacancyModelList.size();
}
private Date stringToDate(String string) throws ParseException {
return new SimpleDateFormat(("yyyy-MM-dd HH:mm:ss"), Locale.getDefault()).parse(string);
}
private static class ViewHolder {
private TextView tvProfession;
private TextView tvHeader;
private TextView tvSalary;
private TextView tvDate;
private TextView headerTv;
}
VacancyModel
public class VacancyModel implements Serializable{
private String profession;
private String header;
private String salary;
private String date;
public VacancyModel() {
}
public String getProfession() {
return profession;
}
public void setProfession(String profession) {
this.profession = profession;
}
public String getHeader() {
return header;
}
public void setHeader(String header) {
this.header = header;
}
public String getSalary() {
if (salary.equals("0") || salary.isEmpty() || salary.equals("null")){
return "empty";
}
else {
return salary;
}
}
public void setSalary(String salary) {
this.salary = salary;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
}
Question: What I am doing wrong and how to change ListView`s count?
The listItem you are sending in should have the type field as well. So what I am suggesting is instead of doing date check manipulation inside listview. you can do it prior before adding data to RecyclerView.
Adding two more Field to your Serializable Data:
public class VacancyModel implements Serializable{
private String profession;
private String header;
private String salary;
private String date;
// set setter and getter for both, by default isHeading will be false,
private boolean isHeading;
private String heading;
public VacancyModel() {
}
public String getProfession() {
return profession;
}
public void setProfession(String profession) {
this.profession = profession;
}
public String getHeader() {
return header;
}
public void setHeader(String header) {
this.header = header;
}
public String getSalary() {
if (salary.equals("0") || salary.isEmpty() || salary.equals("null")){
return "empty";
}
else {
return salary;
}
}
public void setSalary(String salary) {
this.salary = salary;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
}
Do the following thing inside your activity inside activity:
private void generateListHeading(List<VacancyModel> original_vacany_list)
{
List<VacancyModel> vacancy_type_new_record;
VacancyModel model = new vacacyModel();
model.setIsHeading(true);
model.setHeading("New Record");
vacancy_type_new_record.add(model);
List<VacancyModel> vacancy_type_watched;
model = new vacacyModel();
model.setIsHeading(true);
model.setHeading("Watched");
vacancy_type_watched.add(model);
List<VacancyModel> new_vacancy_list;
for(VacanyModel data:original_vacany_list)
{
//do your date condition check here
if(data.getDate==newDate)
{
vacancy_type_new_record.add(data)
} else
{
vacancy_type_watched.add(data)
}
}
//once the whole condition check is add both list to new list
new_vacancy_list.addAll(vacancy_type_new_record);
new_vacancy_list.addAll(vacancy_type_watched);
//now the item count will be 32. in the format heading ,data ,heading,data
adapter.setUpdateddata(new_vacancy_list);
}
Adapter.class:
vacanyModelList = new ArrayList<>();
public SuitableAdapter(Context context, int resource) {
super(context, resource, objects);
//don't set your object in constructor
sqlHelper = new SQLHelper(getContext());
inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}
#NonNull
#Override
public View getView(final int position, View convertView, #NonNull final ViewGroup parent) {
ViewHolder holder = null;
rowType = getItemViewType(position);
if (convertView == null) {
holder = new ViewHolder();
switch (rowType) {
case TYPE_SEPARATOR:
convertView = inflater.inflate(R.layout.suitable_separator_layout, null);
holder.headerTv = (TextView) convertView.findViewById(R.id.section_header);
break;
case TYPE_ITEM:
convertView = inflater.inflate(R.layout.row_layout, null);
holder.tvProfession = (TextView) convertView.findViewById(R.id.tvProfession);
holder.tvHeader = (TextView) convertView.findViewById(R.id.tvHeader);
holder.tvSalary = (TextView) convertView.findViewById(R.id.tvSalary);
holder.tvDate = (TextView) convertView.findViewById(R.id.tvPostCr);
break;
}
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
if (getItemViewType(position) == TYPE_SEPARATOR) {
holder.headerTv = (TextView) convertView.findViewById(R.id.section_header);
if (newRecs == 1) {
holder.headerTv.setText("Новые вакансии");
newRecs = 0;
} else {
holder.headerTv.setText("Ранее просмотренные");
}
}
if (getItemViewType(position) == TYPE_ITEM) {
final VacancyModel model = vacancyModelList.get(position);
holder.tvProfession.setText(model.getProfession());
holder.tvHeader.setText(model.getHeader());
holder.tvSalary.setText(model.getSalary());
holder.tvDate.setText(model.getDate());
Date date;
try {
if (saveLastDate == null) {
saveLastDate = model.getDate();
} else {
date = stringToDate(saveLastDate);
if (date.before(stringToDate(model.getDate()))) {
saveLastDate = model.getDate();
}
}
} catch (ParseException e) {
e.printStackTrace();
}
}
return convertView;
}
#Override
public int getItemViewType(int position) {
VacancyModel model = getItem(position);
if (model.isHeading) {
return TYPE_SEPARATOR;
} else {
return TYPE_ITEM;
}
}
}
#Override
public int getViewTypeCount() {
return 2;
}
#Override
public int getCount() {
return vacancyModelList.size();
}
private Date stringToDate(String string) throws ParseException {
return new SimpleDateFormat(("yyyy-MM-dd HH:mm:ss"), Locale.getDefault()).parse(string);
}
private static class ViewHolder {
private TextView tvProfession;
private TextView tvHeader;
private TextView tvSalary;
private TextView tvDate;
private TextView headerTv;
}
public void setUpdatedData(List<VacancyModel> updated_list)
{
this.vacancyModelList = updated_list;
notifyDataSetChanged();
}
I am using a git repo called LikeButton, but the state of my button keeps jumping around in my recyclerview? Here is the repo https://github.com/jd-alexander/LikeButton. Basically when I click on a recyclerview item, it sets a textview to the word true or false based on if the user liked the post or not, and this works. However, the state of my button is doing some weird stuff, it jumps around...
Here is my Adapter, is their anything wrong with it?
public class ViewpagerAdapter extends RecyclerView.Adapter<ViewpagerAdapter.ViewDashboard>{
private LayoutInflater mLayoutInflater;
private ArrayList<QuestionData> data = new ArrayList<>();
public ViewpagerAdapter(Context context) {
mLayoutInflater=LayoutInflater.from(context);
}
public void setBloglist(ArrayList<QuestionData> listBlogs) {
this.data = listBlogs;
notifyItemRangeChanged(0,listBlogs.size());
}
#Override
public ViewDashboard onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mLayoutInflater.inflate(R.layout.customizejson, parent, false);
ViewDashboard viewholder = new ViewDashboard(view);
return viewholder;
}
#Override
public void onBindViewHolder(ViewDashboard holder, int position) {
QuestionData questionHolder = data.get(position);
holder.questionText.setText(questionHolder.getMtext());
//This sets the text, to a true or a false String
holder.mStudentVoted.setText(questionHolder.getVoters());
holder.mLikeButton.setTag(holder);
}
#Override
public int getItemCount() {
return data.size();
}
class ViewDashboard extends RecyclerView.ViewHolder {
private TextView questionText;
private LikeButton mLikeButton;
private TextView mStudentVoted;
public ViewDashboard(View itemView) {
super(itemView);
questionText = (TextView)itemView.findViewById(R.id.questionText);
mStudentVoted = (TextView)itemView.findViewById(R.id.studentVoted);
mLikeButton = (LikeButton)itemView.findViewById(R.id.like_button_viewpager);
mLikeButton.setOnLikeListener(new OnLikeListener() {
#Override
public void liked(LikeButton likeButton) {
Voting voting = new Voting(getAdapterPosition(),ViewpagerAdapter.this, questionId);
voting.onUpVote();
}
#Override
public void unLiked(LikeButton likeButton) {
Voting voting = new Voting(getAdapterPosition(),ViewpagerAdapter.this, questionId);
voting.onDownVote();
}
});
}
}
}
Voting Class
public class Voting {
private int adapterPosition;
private RecyclerView.Adapter adapter;
private String stringId;
private TextView studentVoted;
//TODO Trim Constructor
public Voting(int adapterPosition,final RecyclerView.Adapter adapter, TextView questionId, TextView studentVoted) {
stringId = questionId.getText().toString();
this.adapter = adapter;
this.studentVoted=studentVoted;
}
public void onUpVote() {
final RequestQueue mRequestQueue = VolleySingleton.getInstance().getRequestQueue();
StringRequest postVoteUp = new StringRequest(Request.Method.PUT, PUT_VOTE_UP, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
System.out.println("Succesful Upvote The Students Value is " + studentVoted);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
System.out.println("failed Upvote");
}
});
mRequestQueue.add(postVoteUp);
}
public void onDownVote() {
final RequestQueue mrequestQueue = VolleySingleton.getInstance().getRequestQueue();
//TODO Delete Token(inserted for student 3 for testing purposes)
StringRequest postVoteDown = new StringRequest(Request.Method.PUT, PUT_VOTE_DOWN, new Response.Listener<String>() {
#Override
public void onResponse(String response) {
//TODO OnResponse, must setLiked(False)
//Succesful downVote The Students Value is true
//studentVoted.setText("false");
System.out.println("Succesful downVote The Students Value is "+studentVoted);
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
System.out.println("failed downVote");
}
});
mrequestQueue.add(postVoteDown);
}
public void realTimeUpVoting(TextView textView){
String voteString= textView.getText().toString();
int voteNumber=Integer.parseInt(voteString)+1;
textView.setText("" + voteNumber);
}
public void realTimeDownVoting(TextView textView){
String voteString= textView.getText().toString();
int voteNumber=Integer.parseInt(voteString)-1;
textView.setText("" + voteNumber);
}
}
Json Request and Parsing Methods
public void JsonRequestMethod() {
mVolleySingleton = VolleySingleton.getInstance();
mRequestQueue = mVolleySingleton.getRequestQueue();
JsonArrayRequest request = new JsonArrayRequest(Request.Method.GET, URL_HOME, (String) null, new Response.Listener<JSONArray>() {
#Override
public void onResponse(JSONArray response) {
try {
mListblogs.clear();
mListblogs = new YourTask().execute(response).get();
} catch (InterruptedException | ExecutionException e) {
e.printStackTrace();
}
}
}, new Response.ErrorListener() {
#Override
public void onErrorResponse(VolleyError error) {
}
});
mRequestQueue.add(request);
}
private ArrayList<QuestionData> parseJSONResponse(JSONArray response) {
if (!response.equals("")) {
try {
StringBuilder data = new StringBuilder();
for (int x = 0; x < response.length(); x++) {
JSONObject currentQuestions = response.getJSONObject(x);
JSONArray arrSubcategory = currentQuestions.optJSONArray("questions");
for (int y = 0; y < arrSubcategory.length(); y++) {
JSONObject objectSubcategory = arrSubcategory.getJSONObject(y);
String text = objectSubcategory.optString("text");
String studentId = objectSubcategory.optString("studentId");
String votes=objectSubcategory.optString("votes");
/*JSONArray cycles through the array of voters, when a user votes
their ID is added to the array.When they downvote, it is removed
*/
JSONArray voters= objectSubcategory.optJSONArray("voters");
QuestionData questionData = new QuestionData();
questionData.setMstudentId(studentId);
questionData.setMtext(text);
questionData.setVotes(votes);
questionData.setVoters(checkIfVoted(voters));
mQuestionDataArrayList.add(questionData);
}
}
} catch (JSONException e) {
e.printStackTrace();
}
}
return mQuestionDataArrayList;
}
private static String checkIfVoted(JSONArray jsonArray ) {
/*pass in a json Array, copy the array into ints, and if
the students Id is contained in the array return the string true
*/
int[] voteIds = new int[jsonArray.length()];
for(int i=0;i<voteIds.length;i++){
voteIds[i] = jsonArray.optInt(i);
}
for(int i=0;i<voteIds.length;i++){
if(voteIds[i]== Integer.parseInt(Login.getUserId())){
//TODO String was only used for Testing purposes, Convert to Boolean later
return "true";
}
}
return "false";
}
you are currently only updating the textview which is why your recycleview changes state when scrolling.
Should change your voting class and pass the question Data rather textview
public Voting(int adapterPosition,final RecyclerView.Adapter adapter, TextView questionId, TextView studentVoted) {
change to
public Voting(int adapterPosition,final RecyclerView.Adapter adapter, QuestionData questionData, TextView studentVoted) {
// make other changes for the data
and then in
public void realTimeUpVoting(QuestionData questionData){
data.votes++ //something like that. idont know your model
// now call back using interface the recyleview data changed method so it updates the count in recycleview automatically.
Edit
passing the question Data in click button
class ViewDashboard extends RecyclerView.ViewHolder {
public int position
public void onBindViewHolder(ViewDashboard holder, int position) {
holder.position = position
}
public void liked(LikeButton likeButton) {
QuestionData questionHolder = data.get(position);