Question

我有一个带有row.xml的回收站视图，其中包含两个textview和一些按钮。我想要完成的是让用户在calendarView上选择一个日期并将其更改为String。之后它还应该显示用户输入的Item的名称。我的问题是，而不是将项目的日期和名称放在一行中。它显示了两行在每个textView中具有相同值。这样的例子。第1行= textview（Hello），textView（Hello）第2行= TextView（march14），Textview（3月14日）。

这是我的RecyclerViewAdapter

public class ItemRecyclerViewAdapter extends RecyclerView.Adapter<ItemRecyclerViewAdapter.ViewHolder>{

private ArrayList<String> mDataset;

public ItemRecyclerViewAdapter(ArrayList<String> mDataset){
    this.mDataset = mDataset;
}

@Override
public ItemRecyclerViewAdapter.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View v = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.recycler_view_row_inventory, parent, false);

    ViewHolder vh = new ViewHolder(v);
    return vh;
}

@Override
public void onBindViewHolder(ItemRecyclerViewAdapter.ViewHolder holder, int position) {
    holder.mItemName.setText(mDataset.get(position));
    holder.mItemDate.setText(mDataset.get(position));

}

@Override
public int getItemCount() {
    return mDataset.size();
}

public class ViewHolder extends RecyclerView.ViewHolder {

    public TextView mItemName;
    public TextView mItemDate;

    public ViewHolder(View itemView) {
        super(itemView);
        mItemName = itemView.findViewById(R.id.ItemNameTxtView);
        mItemDate = itemView.findViewById(R.id.expirationDateTxtView);
    }
}

这是我的活动

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_freezer);

    mDataset = new ArrayList<>();

    mRecyclerView = findViewById(R.id.FreezerInventoryRecyclerView);
    mRecyclerView.setHasFixedSize(true);
    mLayoutManager = new LinearLayoutManager(this);
    mRecyclerView.setLayoutManager(mLayoutManager);
    mAdapter = new ItemRecyclerViewAdapter(mDataset);
    mRecyclerView.setAdapter(mAdapter);

    AddFreezerItems = findViewById(R.id.addItemsFreezer);

    SharedPreferences prefs = getSharedPreferences("itemInfo1", Context.MODE_PRIVATE);
        String name = prefs.getString("FoodName1", null);
        String date = prefs.getString("ExpirationDate1", null);
        mDataset.add(name);
        mDataset.add(date);
        mAdapter.notifyDataSetChanged();
        SharedPreferences.Editor editor = prefs.edit();
        editor.clear();
        editor.apply();

    SharedPreferences preferences = getSharedPreferences("itemName", Context.MODE_PRIVATE);
    SharedPreferences.Editor editor1 = preferences.edit();
    editor1.clear();
    editor1.apply();

}

Answer 1

问题是您的数据类型 - 目前是ArrayList<String>

创建一个POJO来保存您的ROW信息，一个项目应包含填充一行的所有数据。

POJO：

public class Event {

        private final String name;
        private final String date;

        public Event(String name, String date) {
            this.name = name;
            this.date = date;
        }

        public String getName() {
            return name;
        }

        public String getDate() {
            return date;
        }
    }

创建项目：

mDataset = new ArrayList<Event>(); // change your current instance variable from String to Event type

String name = prefs.getString("FoodName1", null);
String date = prefs.getString("ExpirationDate1", null);

mDataset.add(new Event(name, date));

您的数据集例如是：

public ItemRecyclerViewAdapter(ArrayList<Event> mDataset){
    this.mDataset = mDataset;
}

绑定数据时：

@Override
public void onBindViewHolder(ItemRecyclerViewAdapter.ViewHolder holder, int position) {
    holder.mItemName.setText(mDataset.get(position).getName());
    holder.mItemDate.setText(mDataset.get(position).getDate());
}

如何为RecyclerView Row设置两个不同的文本？

1 个答案: