我的android项目中有一个RecyclerView。在那里，我从AutoCompleteTextView搜索添加行。每行都有TextView和一个EditText字段。除了添加，我还删除行。我在每一行都有一个删除按钮。
一切正常。问题是我无法在删除时清除EditText值。例如，如果我添加三行并删除第二行，则第三行应该具有自己的EditText值到达第二位。但问题是，删除的行中的值未清除，而第三行的EditText值则替换为它。然后，如果我添加另一行（到第三位），则EditText字段自动填充前三行的EditText值。
如何清除EditText值???
这是我的适配器代码。
public class SelectItemAdapter extends RecyclerView.Adapter<SelectItemAdapter.ItemHolder> {
private List<String> itemsName, itemsQty, itemsPCode, itemPlant, _retData;
private OnItemClickListener onItemClickListener;
private LayoutInflater layoutInflater;
private String[] mDataset;
public ArrayList myItems = new ArrayList();
private Context context;
private String[] arrayForSaveEditTextValue;
public SelectItemAdapter(Context context, String[] mDataset) {
layoutInflater = LayoutInflater.from(context);
itemsName = new ArrayList<String>();
itemsQty = new ArrayList<String>();
itemsPCode = new ArrayList<String>();
itemPlant = new ArrayList<String>();
_retData = new ArrayList<String>();
this.arrayForSaveEditTextValue = mDataset;
}
@Override
public SelectItemAdapter.ItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = layoutInflater.inflate(R.layout.custom_row_selected_item, parent, false);
return new ItemHolder(itemView, this);
}
@Override
public void onBindViewHolder(final SelectItemAdapter.ItemHolder holder, final int position) {
holder.setItemName(itemsName.get(position));
holder.setItemQty(itemsQty.get(position));
holder.setItemPCode(itemsPCode.get(position));
holder.setItemPlant(itemPlant.get(position));
holder.numPicker.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2,int arg3) {}
@Override
public void afterTextChanged(Editable arg0) {
_retData.set(position, arg0.toString());
Log.d("arg0",arg0.toString());
}
});
}
@Override
public int getItemViewType(int position) {
return position;
}
public String retrieveData(int i) {
return _retData.get(i);
}
@Override
public int getItemCount() {
return itemsName.size();
}
public Object getItemName(int position) {
return itemsName.get(position);
}
public Object getItemQty(int position) {
return itemsQty.get(position);
}
public Object getItemPCode(int position) {
return itemsPCode.get(position);
}
public Object getItemPlant(int position) {
return itemPlant.get(position);
}
public void setOnItemClickListener(OnItemClickListener listener) {
onItemClickListener = listener;
}
public OnItemClickListener getOnItemClickListener() {
return onItemClickListener;
}
public interface OnItemClickListener {
public void onItemClick(ItemHolder item, int position);
}
public void add(int location, String iName, String iQty, String iPCode, String iPlant) {
itemsName.add(location, iName);
itemsQty.add(location, iQty);
itemsPCode.add(location, iPCode);
itemPlant.add(location, iPlant);
_retData.add(location,"0");
notifyItemInserted(location);
notifyDataSetChanged();
}
public void remove(int location) {
if (location >= itemsName.size())
return;
itemsName.remove(location);
itemsQty.remove(location);
itemsPCode.remove(location);
itemPlant.remove(location);
_retData.remove(location);
notifyItemRemoved(location);
notifyDataSetChanged();
}
public static class ItemHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private SelectItemAdapter parent;
TextView textItemName, txtPCode, txtAvailableQty, txtTempQty, txtPlant;
Button bRemove;
EditText numPicker;
public ItemHolder(View itemView, SelectItemAdapter parent) {
super(itemView);
this.parent = parent;
textItemName = (TextView) itemView.findViewById(R.id.txtProductName);
txtAvailableQty = (TextView) itemView.findViewById(R.id.txtAvailbleQty);
txtPCode = (TextView) itemView.findViewById(R.id.txtPCode);
txtPlant = (TextView) itemView.findViewById(R.id.txtPlant);
bRemove = (Button) itemView.findViewById(R.id.bRemove);
numPicker = (EditText) itemView.findViewById(R.id.numberPicker);
bRemove.setOnClickListener(this);
}
public void setItemName(CharSequence name) {
textItemName.setText(name);
}
public void setItemQty(CharSequence name) {
txtAvailableQty.setText(name);
}
public void setItemPCode(CharSequence name) {
txtPCode.setText(name);
}
public void setItemPlant(CharSequence name) {
txtPlant.setText(name);
}
public CharSequence getItemName() {
return textItemName.getText();
}
@Override
public void onClick(View v) {
final OnItemClickListener listener = parent.getOnItemClickListener();
if (listener != null) {
listener.onItemClick(this, getPosition());
}
}
}
public class RetItem {
public String _itemNumPic;
}
}
删除方法......
@Override
public void onItemClick(SelectItemAdapter.ItemHolder item, int position) {
Toast.makeText(this,
"Remove " + " : " + item.getItemName(),
Toast.LENGTH_SHORT).show();
myRecyclerViewAdapter.remove(position);
}
答案 0 :(得分：0)
首先使用Object的列表，而不是使用大量的string arrays！
然后要实现所需的行为，您需要从主列表中删除该项并调用notifyDataSetChanged();
这是一个例子：
List<DayEntity> days = new ArrayList<>();
以下是日期项目列表，您可以将此列表设置为适配器，如下所示：
MyDayAdapter adapter = new MyDayAdapter(context, days);
因此，删除位置上的项目＆＃39; x＆＃39;你可以这样做：
days.remove(x);
adapter.notifyDataSetChanged();
玩得开心......
答案 1 :(得分：0)
1-为您的数据创建一个模型类，将所有的getter和setter放在一个列表中：
public class SelectItemAdapter extends RecyclerView.Adapter<SelectItemAdapter.ItemHolder> {
private final ArrayList<MyData> mDataList = new ArrayList<>();
2-删除方法
//Remove from the list on click
private void removeAt(int position) {
mUserList.remove(position);
notifyItemRemoved(position);
notifyItemRangeChanged(position, mDataList.size());
}
3-现在在onClick（）方法中你可以调用removeAt方法，你只需传递适配器位置的位置
removeAt(getAdapterPosition());
答案 2 :(得分：0)
您需要跟踪EditText RecyclerView中输入的值。您有一个名为arrayForSaveEditTextValue的数组用于保存我认为的EditText值，但我认为没有使用它。你的代码也有点笨拙。所以我想建议一种不同的方法来为您实现此列表。
为列表项创建一个对象。
public class ListItem {
public String itemsName;
public String itemsQty;
public String itemsPCode;
public String itemPlant;
public String _retData;
public String editTextValue = ""; // Default EditText Value
}
你的适配器看起来应该是这样的。
public class SelectItemAdapter extends RecyclerView.Adapter<SelectItemAdapter.ItemHolder> {
private List<ListItem> listItems;
private OnItemClickListener onItemClickListener;
private LayoutInflater layoutInflater;
public SelectItemAdapter(Context context, List<ListItem> listItems) {
layoutInflater = LayoutInflater.from(context);
this.listItems = listItems;
}
@Override
public SelectItemAdapter.ItemHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = layoutInflater.inflate(R.layout.custom_row_selected_item, parent, false);
return new ItemHolder(itemView, this);
}
@Override
public void onBindViewHolder(final SelectItemAdapter.ItemHolder holder, final int position) {
final ListItem tempListItem = listItems.get(position);
holder.textItemName.setText(tempListItem.itemsName);
holder.txtAvailableQty.setText(tempListItem.itemsQty);
holder.txtPCode.setText(tempListItem.itemsPCode);
holder.txtPlant.setText(tempListItem.itemPlant);
holder.numPicker.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1, int arg2, int arg3) {
}
@Override
public void afterTextChanged(Editable arg0) {
// Calculate your _retData and set the TextView
tempListItem._retData = calculateRetData(position, arg0.toString());
tempListItem.editTextValue = arg0.toString();
// Replace the item with the value updated
listItems.add(position, tempListItem);
notifyDataSetChanged();
}
});
}
@Override
public int getItemViewType(int position) {
return position;
}
@Override
public int getItemCount() {
return listItems.size();
}
public void setOnItemClickListener(OnItemClickListener listener) {
onItemClickListener = listener;
}
public OnItemClickListener getOnItemClickListener() {
return onItemClickListener;
}
public interface OnItemClickListener {
public void onItemClick(ItemHolder item, int position);
}
public void add(ListItem listItem) {
listItems.add(listItem);
notifyDataSetChanged();
}
public void remove(int location) {
if (location >= listItems.size())
return;
listItems.remove(location);
notifyDataSetChanged();
}
public static class ItemHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
private SelectItemAdapter parent;
TextView textItemName, txtPCode, txtAvailableQty, txtTempQty, txtPlant;
Button bRemove;
EditText numPicker;
public ItemHolder(View itemView, SelectItemAdapter parent) {
super(itemView);
this.parent = parent;
textItemName = (TextView) itemView.findViewById(R.id.txtProductName);
txtAvailableQty = (TextView) itemView.findViewById(R.id.txtAvailbleQty);
txtPCode = (TextView) itemView.findViewById(R.id.txtPCode);
txtPlant = (TextView) itemView.findViewById(R.id.txtPlant);
bRemove = (Button) itemView.findViewById(R.id.bRemove);
numPicker = (EditText) itemView.findViewById(R.id.numberPicker);
bRemove.setOnClickListener(this);
}
@Override
public void onClick(View v) {
final OnItemClickListener listener = parent.getOnItemClickListener();
if (listener != null) {
listener.onItemClick(this, getPosition());
}
}
}
}
我们的想法是将EditText值保存在相应的对象中，如果在RecyclerView中添加和删除项目，则必须相应地更新项目列表，然后调用{ {1}}。
我还没有对代码进行测试，但我认为你明白了。如果还有其他任何我可以帮助您的信息，请告诉我。