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实时数据和数据绑定RecyclerView以刷新LikeCounter

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因此，我使用RecyclerView制作社交媒体应用，它具有类似button和类似计数器的功能。当Mainactivity加载OnCreate时，它将点击“ http // test / getLikeCounter”在我的RecyclerView中显示类似计数器，但是当我单击类似按钮时，它将击中我自己的API“ http // test / setLikeCounter”并将计数器添加到我的数据库中，但是因为它不会再次加载OnCreate方法，所以它不会t在我的RecyclerView中添加我的Like计数器，我想做的是单击“赞”按钮时动态刷新RecyclerView，因此我尝试实现实时数据和数据绑定到RecyclerView，请给我一些提示，以使它起作用。 / p>

这是myDataBinding 

fragmentTabhotBinding = DataBindingUtil.inflate(inflater,R.layout.fragment_tabhot,container,false);
    v = fragmentTabhotBinding.getRoot();

这将在OnCreate中处于活动状态，它将进入API“ http // Test / getLikeCounter” 

public void createDummyData1UPDATE(int ReceivedDummyUrutan,int ReceivedTotalThread,String ReceivedDummyIDContent,String ReceivedDummyTitle,String ReceivedDummyPublishTime,String ReceivedDummyImageOri,String ReceivedDummyShortDescription,int ReceivedDummySeen,int ReceivedDummyComment,int ReceivedDummyLike,int ReceivedDummyisComment,int ReceivedDummyisLike,int ReceivedDummyisBookmark) {
    modelSingleHotTrendingNews.add(new ModelSingleHotTrendingNews(ReceivedDummyIDContent,ReceivedDummyPublishTime,ReceivedDummyImageOri,ReceivedDummyShortDescription,ReceivedDummySeen,ReceivedDummyComment,ReceivedDummyLike,ReceivedDummyisComment,ReceivedDummyisLike,ReceivedDummyisBookmark,"x53535","No Error"));

    if(ReceivedDummyUrutan ==  ReceivedTotalThread-1){
        ModelSectionHotTrendingNews modelSectionHotTrendingNewsX = new ModelSectionHotTrendingNews();
        modelSectionHotTrendingNewsX.setHeaderTitle("TRENDING NEWS");
        modelSectionHotTrendingNewsX.setallItemsInSection(modelSingleHotTrendingNews);
        modelSectionHotTrendingNews.add(modelSectionHotTrendingNewsX);

        /*RecyclerViewSingleHotTrendingNews = v.findViewById(R.id.RecyclerView_Single_HotTrendingNews);*/
        RecyclerViewSingleHotTrendingNews = fragmentTabhotBinding.RecyclerViewSingleHotTrendingNews;
        RecyclerViewSingleHotTrendingNews.setHasFixedSize(true);
        adapterSectionHotTrendingNews = new AdapterSectionHotTrendingNews(getactivity(),modelSectionHotTrendingNews,listenerHotTrendingNews);
        RecyclerViewSingleHotTrendingNews.setLayoutManager(new LinearLayoutManager(getactivity(),LinearLayoutManager.VERTICAL,false));
        RecyclerViewSingleHotTrendingNews.setadapter(adapterSectionHotTrendingNews);
        //Optimized
        RecyclerViewSingleHotLatestNews.setHasFixedSize(true);
        RecyclerViewSingleHotLatestNews.setItemViewCacheSize(20);

        ModelSingleHotTrendingNews modelSingleHotTrendingNewsX;
        modelSingleHotTrendingNewsX = modelSingleHotTrendingNews.get(0);
        fragmentTabhotBinding.setRfg(modelSingleHotTrendingNewsX);


    }

}

当我按下“赞”按钮时，这将激活，将其设置为postvalue的GameTitle覆盖我之前在模型中设置的文本

public void getisCommentLikeBookmarkMainactivity(int ReceivedDummyLike,int ReceivedDummyisLike){
    Toast.makeText(getactivity(),"berhasilLikeUnlike="+ReceivedDummyLike+"DummyisLike"+ ReceivedDummyisLike,Toast.LENGTH_LONG).show();

    ModelSingleHotTrendingNews modelSingleHotTrendingNewsX = ViewModelProviders.of(getactivity()).get(ModelSingleHotTrendingNews.class);
    modelSingleHotTrendingNewsX.gametitle.postvalue("TotalLike"+ReceivedDummyLike);



}

这也是我的Adapter.java我也设置了mutableLiveData 

public class AdapterSingleHotTrendingNews extends RecyclerView.Adapter{

private Context mContext;
private ArrayList<ModelSingleHotTrendingNews> modelSingleHotTrendingNews;

private RecyclerViewClicklistener mListener;


public AdapterSingleHotTrendingNews(Context mContext,ArrayList<ModelSingleHotTrendingNews> modelSingleHotTrendingNews,RecyclerViewClicklistener mListener) {
    this.mContext = mContext;
    this.modelSingleHotTrendingNews = modelSingleHotTrendingNews;
    this.mListener = mListener;
}




public void setmodelSingleHotTrendingNewsSD(ArrayList<ModelSingleHotTrendingNews> modelSingleHotTrendingNews) {
    this.modelSingleHotTrendingNews = modelSingleHotTrendingNews;
    notifyDataSetChanged();
}



//Container
@Override
public SingleHotTrendingNewsViewHolder onCreateViewHolder(ViewGroup viewGroup,int viewType) {
    /*View v = LayoutInflater.from(viewGroup.getcontext()).inflate(R.layout.item_single_hottrendingnews,null);
    return new SingleHotTrendingNewsViewHolder(v,mListener);*/


    View v;
    ItemSingleHottrendingnewsBinding itemSingleHottrendingnewsBinding;
    itemSingleHottrendingnewsBinding = DataBindingUtil.inflate(LayoutInflater.from(viewGroup.getcontext()),R.layout.item_single_hottrendingnews,viewGroup,false);
    return new SingleHotTrendingNewsViewHolder(itemSingleHottrendingnewsBinding,mListener);
}

//Fill Container with Model Setter Getter
@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder,final int position) {

    final SingleHotTrendingNewsViewHolder singleHotTrendingNewsViewHolder = (SingleHotTrendingNewsViewHolder) holder;
    final ModelSingleHotTrendingNews modelSingleHotTrendingNewsX = modelSingleHotTrendingNews.get(position);

    //Set
    singleHotTrendingNewsViewHolder.TVGameDate.setText(modelSingleHotTrendingNewsX.getGamedate());
    singleHotTrendingNewsViewHolder.TVGameTitle.setText(modelSingleHotTrendingNewsX.gametitle.getvalue());
    Glide.with(mContext).load(modelSingleHotTrendingNewsX.getGameimage()).into(singleHotTrendingNewsViewHolder.IMGGameImage);
    /*singleHotTrendingNewsViewHolder.IMGGameImage.setImageResource(modelSingleHotTrendingNewsX.getGameimage());*/

    singleHotTrendingNewsViewHolder.TVSeenCounter.setText(String.valueOf(modelSingleHotTrendingNewsX.getSeencounter()));
    singleHotTrendingNewsViewHolder.TVCommentCounter.setText(String.valueOf(modelSingleHotTrendingNewsX.getcommentcounter()));
    singleHotTrendingNewsViewHolder.TVLikeCounter.setText(String.valueOf(modelSingleHotTrendingNewsX.getLikecounter()));

    if(modelSingleHotTrendingNewsX.getIscomment() == 0){
        singleHotTrendingNewsViewHolder.IMGCommentView.setImageResource(R.drawable.comment_off);
    }else if(modelSingleHotTrendingNewsX.getIscomment() == 1){
        singleHotTrendingNewsViewHolder.IMGCommentView.setImageResource(R.drawable.comment_on);
    }

    if(modelSingleHotTrendingNewsX.getIslike() == 0){
        singleHotTrendingNewsViewHolder.IMGLikeView.setImageResource(R.drawable.heart_off);
    }else if(modelSingleHotTrendingNewsX.getIslike() == 1){
        singleHotTrendingNewsViewHolder.IMGLikeView.setImageResource(R.drawable.heart_on);
    }

    if(modelSingleHotTrendingNewsX.getTrendingnewssaving() == 0) {
        singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setImageResource(R.drawable.saved_off);
        singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setVisibility(View.GONE);
    }else if(modelSingleHotTrendingNewsX.getTrendingnewssaving() == 1) {
        singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setImageResource(R.drawable.saved_on);
    }

    singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setOnClicklistener(new View.OnClicklistener() {
        @Override
        public void onClick(View v) {

            final int booltrendingnewssaving = modelSingleHotTrendingNewsX.getTrendingnewssaving();

            final String idcontent = modelSingleHotTrendingNewsX.getIdcontent();

            if (booltrendingnewssaving == 1){
                Toast.makeText(v.getcontext(),"Turn Off Saved News " + idcontent,Toast.LENGTH_SHORT).show();
                singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setImageResource(R.drawable.saved_off);
                modelSingleHotTrendingNewsX.setTrendingnewssaving(0);
                /*updateSavedNewsSaving("update_newssaving",id,false);*/
            } else if(booltrendingnewssaving == 0) {
                Toast.makeText(v.getcontext(),"Turn On Saved News " + idcontent,Toast.LENGTH_SHORT).show();
                singleHotTrendingNewsViewHolder.ICONHotTrendingNewsSaving.setImageResource(R.drawable.saved_on);
                modelSingleHotTrendingNewsX.setTrendingnewssaving(1);
                /*updateSavedNewsSaving("update_newssaving",true);*/
            }
        }
    });



   /* Glide.with(mContext)
            .load(feedItem.getImageURL())
            .diskCacheStrategy(DiskCacheStrategy.ALL)
            .centerCrop()
            .error(R.drawable.bg)
            .into(feedListRowHolder.thumbView);*/

    /*singleHotTrendingNewsViewHolder.ROWHotTrendingNewsContainer.setOnClicklistener(new View.OnClicklistener() {
        @Override
        public void onClick(View v) {
            Toast.makeText(v.getcontext(),modelSingleHotTrendingNews.get(position).getGamedescription(),Toast.LENGTH_SHORT).show();

            //Passing Data to GameDescriptionactivity
            Intent intent = new Intent(mContext,GameDetailactivity.class);
            intent.putExtra("ImagePKG",modelSingleHotTrendingNews.get(position).getGameimage());
            intent.putExtra("NamePKG",modelSingleHotTrendingNews.get(position).getGamedate());
            intent.putExtra("UrlPKG",modelSingleHotTrendingNews.get(position).getIdcontent());
            intent.putExtra("DescriptionPKG",modelSingleHotTrendingNews.get(position).getGametitle());
            mContext.startactivity(intent);
        }
    });*/
}

@Override
public int getItemCount() {
    int itemCount = modelSingleHotTrendingNews.size();
    return itemCount;
}

public void setmodelSingleHotTrendingNews(ArrayList<ModelSingleHotTrendingNews> modelSingleHotTrendingNews) {
    this.modelSingleHotTrendingNews = modelSingleHotTrendingNews;
    notifyDataSetChanged();
}

public class SingleHotTrendingNewsViewHolder extends RecyclerView.ViewHolder implements View.OnClicklistener{
    TextView TVGameDate;
    TextView TVGameTitle;
    ImageView IMGGameImage;

    TextView TVSeenCounter;
    TextView TVCommentCounter;
    TextView TVLikeCounter;

    ImageView IMGSeenView;
    ImageView IMGCommentView;
    ImageView IMGLikeView;

    ImageView ICONHotTrendingNewsSaving;
    private RelativeLayout ROWHotTrendingNewsContainer;

    private RecyclerViewClicklistener mListener;

    //
    private ItemSingleHottrendingnewsBinding itemSingleHottrendingnewsBinding;

    public SingleHotTrendingNewsViewHolder(ItemSingleHottrendingnewsBinding itemSingleHottrendingnewsBinding,RecyclerViewClicklistener listener) {
        super(itemSingleHottrendingnewsBinding.getRoot());

        this.itemSingleHottrendingnewsBinding = itemSingleHottrendingnewsBinding;

        TVGameDate = itemView.findViewById(R.id.TV_GameDate);
        TVGameTitle = itemView.findViewById(R.id.TV_GameTitle);
        IMGGameImage = itemView.findViewById(R.id.IMG_GameImage);

        TVSeenCounter = itemView.findViewById(R.id.TV_SeenCounter);
        TVCommentCounter = itemView.findViewById(R.id.TV_CommentCounter);
        TVLikeCounter = itemView.findViewById(R.id.TV_LikeCounter);

        IMGSeenView = itemView.findViewById(R.id.IMG_SeenView);
        IMGCommentView = itemView.findViewById(R.id.IMG_CommentView);
        IMGLikeView = itemView.findViewById(R.id.IMG_LikeView);

        ICONHotTrendingNewsSaving = itemView.findViewById(R.id.ICON_HotTrendingNewsSaving);
        ROWHotTrendingNewsContainer = itemView.findViewById(R.id.ROW_HotTrendingNewsContainer);

        mListener = listener;
        ROWHotTrendingNewsContainer.setOnClicklistener(this);
        IMGCommentView.setOnClicklistener(this);
        IMGLikeView.setOnClicklistener(this);

        //
    }

    @Override
    public void onClick(View v) {
        switch (v.getId()) {
            case R.id.ROW_HotTrendingNewsContainer:
                mListener.onRowHotTrendingNewsContainerClick(ROWHotTrendingNewsContainer,getadapterPosition());
                break;
            case R.id.IMG_CommentView:
                mListener.onRowCommentViewClick(IMGCommentView,getadapterPosition());
                break;
            case R.id.IMG_LikeView:
                mListener.onRowLikeViewClick(IMGLikeView,getadapterPosition());
                break;
            default:
                break;
        }
    }
}

public interface RecyclerViewClicklistener {
    void onRowHotTrendingNewsContainerClick(View view,int position);
    void onRowCommentViewClick(View view,int position);
    void onRowLikeViewClick(View view,int position);
}

}

这是Model.java，我将其设置为ModelView，将GameTitle变量设置为MutableLiveData 

    public class ModelSingleHotTrendingNews extends ViewModel implements Serializable {

    private String idcontent;
    public MutableLiveData<String> gametitle = new MutableLiveData<>();

    private String gamedate;
    private String gameimage;
    private String gamedescription;

    private int seencounter;
    private int commentcounter;
    private int likecounter;

    private int iscomment;
    private int islike;
    private int trendingnewssaving;

    private String value;
    private String message;



    public ModelSingleHotTrendingNews() {
    }

    public ModelSingleHotTrendingNews(String idcontent,String gamedate,String gameimage,String gamedescription,int seencounter,int commentcounter,int likecounter,int iscomment,int islike,int trendingnewssaving,String value,String message) {
        this.idcontent = idcontent;
        this.gamedate = gamedate;
        this.gameimage = gameimage;
        this.gamedescription = gamedescription;
        this.seencounter = seencounter;
        this.commentcounter = commentcounter;
        this.likecounter = likecounter;
        this.iscomment = iscomment;
        this.islike = islike;
        this.trendingnewssaving = trendingnewssaving;
        this.value = value;
        this.message = message;
    }


    public MutableLiveData<String> getGametitle() {

            gametitle.setvalue(gametitle.getvalue() + "HI");

        return gametitle;
    }

    public void setGametitle(MutableLiveData<String> gametitle) {
        this.gametitle = gametitle;
    }

    public String getIdcontent() {
        return idcontent;
    }

    public void setIdcontent(String idcontent) {
        this.idcontent = idcontent;
    }




    public String getGamedate() {
        return gamedate;
    }

    public void setGamedate(String gamedate) {
        this.gamedate = gamedate;
    }

    public String getGameimage() {
        return gameimage;
    }

    public void setGameimage(String gameimage) {
        this.gameimage = gameimage;
    }

    public String getGamedescription() {
        return gamedescription;
    }

    public void setGamedescription(String gamedescription) {
        this.gamedescription = gamedescription;
    }

    public int getSeencounter() {
        return seencounter;
    }

    public void setSeencounter(int seencounter) {
        this.seencounter = seencounter;
    }

    public int getcommentcounter() {
        return commentcounter;
    }

    public void setCommentcounter(int commentcounter) {
        this.commentcounter = commentcounter;
    }

    public int getLikecounter() {
        return likecounter;
    }

    public void setLikecounter(int likecounter) {
        this.likecounter = likecounter;
    }

    public int getIscomment() {
        return iscomment;
    }

    public void setIscomment(int iscomment) {
        this.iscomment = iscomment;
    }

    public int getIslike() {
        return islike;
    }

    public void setIslike(int islike) {
        this.islike = islike;
    }

    public int getTrendingnewssaving() {
        return trendingnewssaving;
    }

    public void setTrendingnewssaving(int trendingnewssaving) {
        this.trendingnewssaving = trendingnewssaving;
    }

    public String getvalue() {
        return value;
    }

    public void setvalue(String value) {
        this.value = value;
    }

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
}

因为GameTitle的setvalue设置为“ Hi”，然后将后值替换为totalLike，对吗？我按下按钮时，它不会更改Display GameTitle的任何内容

ugrgadd1 回答：实时数据和数据绑定RecyclerView以刷新LikeCounter
暂时没有好的解决方案，如果你有好的解决方案，请发邮件至：iooj@foxmail.com
androidandroid-databindingandroid-livedataandroid-recyclerviewjava
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