我正在嘗試使用存儲(chǔ)在 ArrayList 中的數(shù)據(jù)來填充 RecyclerView。當(dāng) RecyclerView 加載每條數(shù)據(jù)時(shí)，每行重復(fù) 4 次。我已經(jīng)嘗試了我發(fā)現(xiàn)的各種解決方案，但似乎都無法解決問題。在對(duì)“mData”中的數(shù)據(jù)進(jìn)行一些調(diào)試之后，似乎是正確的，所以這會(huì)讓我相信這個(gè)問題是“onBindViewHolder”？適配器public class EventsRecyclerViewAdapter extends RecyclerView.Adapter<EventsRecyclerViewAdapter.ViewHolder> {private List<String> mData;private LayoutInflater mInflater;private ItemClickListener mClickListener;// data is passed into the constructorpublic EventsRecyclerViewAdapter(List<String> data) { this.mInflater = LayoutInflater.from(MainActivity.mainActivity); this.mData = data;}// inflates the row layout from xml when needed@Overridepublic ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View view = mInflater.inflate(R.layout.recyclerview_row, parent, false); return new ViewHolder(view);}// binds the data to the TextView in each row@Overridepublic void onBindViewHolder(ViewHolder holder, int position) { holder.keyID.setText(mData.get(position)); holder.lockID.setText(mData.get(position)); holder.eventTime.setText(mData.get(position)); holder.eventType.setText(mData.get(position));}// total number of rows@Overridepublic int getItemCount() { return mData.size();}// stores and recycles views as they are scrolled off screenpublic class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener { TextView keyID; TextView lockID; TextView eventTime; TextView eventType; ViewHolder(View itemView) { super(itemView); keyID = itemView.findViewById(R.id.keyIDTV); lockID = itemView.findViewById(R.id.lockIDTV); eventTime = itemView.findViewById(R.id.eventDateTV); eventType = itemView.findViewById(R.id.eventTypeTV); itemView.setOnClickListener(this); } @Override public void onClick(View view) { if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition()); }}
1 回答
手掌心
TA貢獻(xiàn)1942條經(jīng)驗(yàn) 獲得超3個(gè)贊
在你的 'onBindViewHolder' 中，你在你的每個(gè) textView 中設(shè)置相同的數(shù)據(jù)
// binds the data to the TextView in each row
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
holder.keyID.setText(mData.get(position));
holder.lockID.setText(mData.get(position));
holder.eventTime.setText(mData.get(position));
holder.eventType.setText(mData.get(position));
}
在這里，您將mData.get(position)設(shè)置為 holder 中的每個(gè) textView
一個(gè)解決方案是為您的 recyclerView 創(chuàng)建一個(gè) Pojo 類
創(chuàng)建 Pojo 事件類
class Event{
public String keyID;
public String lockID;
public String eventTime;
public String eventType;
}
在您的片段中創(chuàng)建“事件”列表
public class KeyEvents extends Fragment {
public static KeyInfo newInstance() {
KeyInfo fragment = new KeyInfo();
return fragment;
}
EventsRecyclerViewAdapter adapter;
ArrayList<Event> eventsList;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
EventsOperationHandler ev = new EventsOperationHandler();
eventsList = new ArrayList<>();
for (int i=0; i<ev.getEvents().size(); i++) {
Event event = new Event();
event.keyID = ev.getEvents().get(i).get(0);
event.lockID = ev.getEvents().get(i).get(1);
event.eventTime = ev.getEvents().get(i).get(2);
event.eventType = ev.getEvents().get(i).get(3);
eventsList.add(event);
}
}
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.fragment_event_info, container, false);
RecyclerView recyclerView = view.findViewById(R.id.rvEvents);
recyclerView.setLayoutManager(new LinearLayoutManager(MainActivity.mainActivity));
adapter = new EventsRecyclerViewAdapter(eventsList);
recyclerView.setAdapter(adapter);
return view;
}
}
修改您的 recyclerView 以處理“事件”類
public class EventsRecyclerViewAdapter extends RecyclerView.Adapter<EventsRecyclerViewAdapter.ViewHolder> {
private List<Event> mData;
private LayoutInflater mInflater;
private ItemClickListener mClickListener;
// data is passed into the constructor
public EventsRecyclerViewAdapter(List<Event> data) {
this.mInflater = LayoutInflater.from(MainActivity.mainActivity);
this.mData = data;
}
// inflates the row layout from xml when needed
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.recyclerview_row, parent, false);
return new ViewHolder(view);
}
// binds the data to the TextView in each row
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
Event event = mData.get(position);
holder.keyID.setText(event.keyID);
holder.lockID.setText(event.lockId);
holder.eventTime.setText(event.eventTime);
holder.eventType.setText(event.eventType);
}
// total number of rows
@Override
public int getItemCount() {
return mData.size();
}
// stores and recycles views as they are scrolled off screen
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView keyID;
TextView lockID;
TextView eventTime;
TextView eventType;
ViewHolder(View itemView) {
super(itemView);
keyID = itemView.findViewById(R.id.keyIDTV);
lockID = itemView.findViewById(R.id.lockIDTV);
eventTime = itemView.findViewById(R.id.eventDateTV);
eventType = itemView.findViewById(R.id.eventTypeTV);
itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
}
}
// parent activity will implement this method to respond to click events
public interface ItemClickListener {
void onItemClick(View view, int position);
}
就是這樣，這應(yīng)該可以完美地工作。
添加回答
舉報(bào)
0/150
提交
取消