Android 无法从getter setter模式获取judul

Android 无法从getter setter模式获取judul,android,android-fragments,android-recyclerview,Android,Android Fragments,Android Recyclerview,我正在构建一个recyclerview,recyclerview已经显示了数据库中的数据 我希望单击recyclerview中的数据并转到其他活动以查看详细数据 问题是,在onCreateViewHolder上实现时,我不能从Getter和Setter调用getJudul。调用Getter Setter时,会出现一条消息“无法解析getJudul方法” 这是我的模型 public class BeritaPagModel { String idberita, judul; pu

我正在构建一个recyclerview,recyclerview已经显示了数据库中的数据

我希望单击recyclerview中的数据并转到其他活动以查看详细数据

问题是,在onCreateViewHolder上实现时,我不能从Getter和Setter调用getJudul。调用Getter Setter时,会出现一条消息“无法解析getJudul方法”

这是我的模型

public class BeritaPagModel {
    String idberita, judul;

    public BeritaPagModel() {
    }

    public String getIdberita() {
        return idberita;
    }

    public void setIdberita(String idberita) {
        this.idberita = idberita;
    }

    public String getJudul() {
        return judul;
    }

    public void setJudul(String judul) {
        this.judul = judul;
    }
}

我的观点持有者

public class BeritaPagViewHolder extends RecyclerView.ViewHolder {
    public BeritaPagViewHolder(@NonNull View itemView) {
        super(itemView);
        itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                iclicklistener.onItemClick(view, getAdapterPosition());
            }
        });
        itemView.setOnLongClickListener(new View.OnLongClickListener() {
            @Override
            public boolean onLongClick(View view) {
                iclicklistener.onItemLongClick(view, getAdapterPosition());
                return true;
            }
        });
    }

    public void setItem(Context ctx, String judul){
        TextView ijudul = itemView.findViewById(R.id.beritapag_judul_itemlist);
        ijudul.setText(judul);
    }

    public interface ClickListener{
        void onItemClick(View view, int position);
        void onItemLongClick(View view, int position);}
    private BeritaPagViewHolder.ClickListener iclicklistener;
    public void setOnClickListener(BeritaPagViewHolder.ClickListener clickListener){
        iclicklistener = clickListener;
    }
}
我的主要片段

iref = FirebaseDatabase.getInstance().getReference().child("berita");
        PagedList.Config config = new PagedList.Config.Builder()
                .setEnablePlaceholders(false)
                .setPageSize(5)
                .build();
        DatabasePagingOptions<BeritaPagModel> options = new DatabasePagingOptions.Builder<BeritaPagModel>()
                .setLifecycleOwner(this)
                .setQuery(iref, config, BeritaPagModel.class)
                .build();

        iadapter = new FirebaseRecyclerPagingAdapter<BeritaPagModel, BeritaPagViewHolder>(options) {
            @Override
            protected void onBindViewHolder(@NonNull BeritaPagViewHolder beritaPagViewHolder, int i, @NonNull BeritaPagModel beritaPagModel) {
                beritaPagViewHolder.setItem(getActivity().getApplicationContext(),
                        beritaPagModel.getJudul()
                        );
            }

            @Override
            protected void onLoadingStateChanged(@NonNull LoadingState state) {
                switch (state){
                    case LOADING_INITIAL:
                    case LOADING_MORE:
                        iswipeRefreshLayout.setRefreshing(true);
                        break;
                    case LOADED:
                        iswipeRefreshLayout.setRefreshing(false);
                        break;
                    case FINISHED:
                        iswipeRefreshLayout.setRefreshing(false);
                        break;
                    case ERROR:
                        retry();
                        break;
                }
            }

            @NonNull
            @Override
            public BeritaPagViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
                View itemView = LayoutInflater.from(parent.getContext()).inflate(R.layout.fragment_layout_beritapag_itemlist, parent, false);
                BeritaPagViewHolder beritaPagViewHolder = new BeritaPagViewHolder(itemView);

                beritaPagViewHolder.setOnClickListener(new BeritaPagViewHolder.ClickListener() {
                    @Override
                    public void onItemClick(View view, int position) {
                        Toast.makeText(getContext(), "Klik sekali", Toast.LENGTH_SHORT).show();


                        final String curJudul = getItem(position).getJudul();

                    }

                    @Override
                    public void onItemLongClick(View view, int position) {
                        Toast.makeText(getContext(), "Klik lamaaaaa", Toast.LENGTH_SHORT).show();
                    }
                });

                return beritaPagViewHolder;

            }
        };
        irecyclerView.setAdapter(iadapter);

        iswipeRefreshLayout.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                iadapter.refresh();
            }
        });
        return irootview;
    }
iref=FirebaseDatabase.getInstance().getReference().child(“berita”);
PagedList.Config Config=new PagedList.Config.Builder()
.setEnablePlaceholders(false)
.setPageSize(5)
.build();
DatabasePagingOptions选项=新建DatabasePagingOptions.Builder()
.setLifecycleOwner(此)
.setQuery(iref、config、BeritaPagModel.class)
.build();
iadapter=新的FirebaseRecyclerPaginAdapter(选项){
@凌驾
受保护的无效onBindViewHolder(@NonNull BeritaPagViewHolder BeritaPagViewHolder,int i,@NonNull BeritaPagModel BeritaPagModel){
beritaPagViewHolder.setItem(getActivity().getApplicationContext(),
beritaPagModel.getJudul()
);
}
@凌驾
受保护的void onLoadingState已更改(@NonNull LoadingState状态){
开关(状态){
案例加载_首字母:
案例加载\u更多:
iswipeRefreshLayout.setRefresh(true);
打破
已装入案例:
iswipeRefreshLayout.setRefresh(false);
打破
案件完成:
iswipeRefreshLayout.setRefresh(false);
打破
案例错误:
重试();
打破
}
}
@非空
@凌驾
public BeritaPagViewHolder onCreateViewHolder(@NonNull ViewGroup父级,int-viewType){
View itemView=LayoutInflater.from(parent.getContext()).flate(R.layout.fragment\u layout\u beritapag\u itemlist,parent,false);
BeritaPagViewHolder BeritaPagViewHolder=新的BeritaPagViewHolder(itemView);
beritaPagViewHolder.setOnClickListener(新的beritaPagViewHolder.ClickListener(){
@凌驾
公共虚线单击(视图,int位置){
Toast.makeText(getContext(),“Klik sekali”,Toast.LENGTH_SHORT.show();
最后一个字符串curJudul=getItem(position).getJudul();
}
@凌驾
长单击(视图,int位置)时的公共无效{
Toast.makeText(getContext(),“Klik lamaaaa”,Toast.LENGTH_SHORT.show();
}
});
返回TapAgViewHolder;
}
};
iRecyclView.setAdapter(iadapter);
iswipeRefreshLayout.setOnRefreshListener(新的SwipeRefreshLayout.OnRefreshListener(){
@凌驾
公共void onRefresh(){
iadapter.refresh();
}
});
返回irootview;
}

确保#获取项目(位置)返回到标签模型

如果它返回Object,则必须将其转换为BeritaPagModel:

((BeritaPagModel)getItem(position)).getJudul()

如果上述操作不起作用,请尝试单击文件->使缓存无效并重新启动

编辑:


您可以尝试将代码移动到#onBindViewHolder()方法,您将在那里获得BeritaPagModel对象引用


我还找到了一个例子供您参考:

谢谢您的回复。我已经尝试过了,我补充道,最后一个字符串curJudul=((BeritaPagModel)getItem(position)).getJudul();但仍然是一个错误。不可转换类型无法将“com.google.firebase.database.Datasnapshot”强制转换为“com.example.myproject.BeritaPagination.BeritaPagModel”。我该怎么做,请帮助。您可以尝试将代码移动到#onBindViewHolder()方法。好的,我会试试