Android 无法从getter setter模式获取judul
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
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()代码>
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