EditText侦听器在ListView中不起作用

Question

我有一个listView，其中每行具有一个TextView，一个EditText视图和两个按钮。这两个按钮用于增加和降低EditText的值。这些按钮工作正常，但是当我编辑第一行EditText的值时，它会更改所有行的EditTexts的值，然后当我按下按钮时，它会增加所有行的值。这是我的听众正在创建一个问题

viewHolder.supplyQuantity.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) {
            if(viewHolder.supplyQuantity.getText().toString()!="") {
                childVaccinationArrayList.get(position).setQuantity(Integer.parseInt(viewHolder.supplyQuantity.getText().toString()));
                notifyDataSetChanged();
                Log.d("list", textMap.toString());
            }
        }
    });

适配器代码

public class LHWSupplyListAdapter extends ArrayAdapter<SpinnerData> {
List<SpinnerData> childVaccinationArrayList;
Context context;
public LHWSupplyListAdapter(List<SpinnerData> arrayList, Context context) {
    super(context, R.layout.item_supplies_to_given_to_lhw, arrayList);
    this.childVaccinationArrayList = arrayList;
    this.context = context;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
    SpinnerData suppliesModel = getItem(position);
    final LHWSupplyListAdapter.ViewHolder viewHolder;
    if (convertView == null) {
        viewHolder = new LHWSupplyListAdapter.ViewHolder();
        LayoutInflater inflater = LayoutInflater.from(getContext());
        convertView = inflater.inflate(R.layout.item_supplies_to_given_to_lhw, parent, false);
        viewHolder.supplyName = convertView.findViewById(R.id.SupplyName);
        viewHolder.supplyQuantity = convertView.findViewById(R.id.Quantity);
        viewHolder.btnAdd = convertView.findViewById(R.id.AddQuantity);
        viewHolder.btnRemove = convertView.findViewById(R.id.RemoveQuantity);
        convertView.setTag(viewHolder);
    } else {
        viewHolder = (LHWSupplyListAdapter.ViewHolder) convertView.getTag();
    }
    viewHolder.supplyName.setText(childVaccinationArrayList.get(position).getItem());
    viewHolder.supplyQuantity.setText(String.valueOf(childVaccinationArrayList.get(position).getQuantity()));
    viewHolder.btnAdd.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            childVaccinationArrayList.get(position).setQuantity(Integer.parseInt(viewHolder.supplyQuantity.getText().toString())+1);
            notifyDataSetChanged();
        }
    });
    viewHolder.btnRemove.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            if (childVaccinationArrayList.get(position).getQuantity() > 0 && Integer.parseInt(viewHolder.supplyQuantity.getText().toString()) > 0) {
                childVaccinationArrayList.get(position).setQuantity(Integer.parseInt(viewHolder.supplyQuantity.getText().toString()) - 1);
                notifyDataSetChanged();
            }
        }
    });
    viewHolder.supplyQuantity.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) {
            if(viewHolder.supplyQuantity.getText().toString()!="") {
                childVaccinationArrayList.get(position).setQuantity(Integer.parseInt(viewHolder.supplyQuantity.getText().toString()));
                notifyDataSetChanged();
            }
        }
    });
    return convertView;
}
private static class ViewHolder {
    TextView supplyName;
     EditText supplyQuantity;
    ImageView btnAdd, btnRemove;
}
}

Answer 1

您的适配器内部有侦听器吗？

您可以在此处放置适配器代码吗？

Answer 2

您应该更改以下代码

您需要复制以下代码，请单击"侦听器"

的侦听器

    viewHolder.supplyQuantity.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) {
            if(viewHolder.supplyQuantity.getText().toString()!="") {
                childVaccinationArrayList.get(position).setQuantity(Integer.parseInt(viewHolder.supplyQuantity.getText().toString()));
                notifyDataSetChanged();
            }
        }
    });