Question

目前正在使用spinner处理listview.MY要求是根据listview项目本身中的微调器选择更新listview项目。但是在spinner中执行选择时它会更新所有listview项目。我认为我的问题在于

OnItemSelectedListener

。而且我在加载listview时也弄明白，微调器ItemSelectedListener没有执行任何时间。我不明白我是否已经完成了这个。请帮我找到解决方案。

Spinner OnItemSelected侦听器代码是

    viewHolder.description.setOnItemSelectedListener(new  AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
                //here the position represents the listview item position
                Log.e("Position of Data is ", Integer.toString(position));
                //here the fullListData.get(pos) get the data from spinner based on selection 
                datas.set(position, fullSeatList.get(pos));
               //here am update the listview item data with selected spinner data
                datas.get(position).getDescription());
                Log.e("Data in lisr", datas.get(position).getPartNo());
                notifyDataSetChanged();
          }
        @Override
        public void onNothingSelected(AdapterView<?> parent) {

        }
    });

编辑1：我的适配器类是

public class ListViewAdapter extends BaseAdapter {

Context context;
ArrayList<SeatConfigCustomObjects> datas;
ArrayList<SeatConfigCustomObjects> fullSeatList;
ArrayAdapter<SeatConfigCustomObjects> adapter;
public ListViewAdapter(Context context, ArrayList<SeatConfigCustomObjects> datas, ArrayList<SeatConfigCustomObjects> fullSeatList) {
    this.context = context;
    this.datas = datas;
    this.fullSeatList=fullSeatList;


}

@Override
public int getCount() {
    return datas.size();
}

@Override
public Object getItem(int position) {
    return datas.get(position);
}

@Override
public long getItemId(int position) {
    return position;
}

@Override
public View getView(final int position, View convertView, ViewGroup parent) {
    final ViewHolder viewHolder;
    if(convertView==null){
        convertView=((LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.seat_config_listview_item,null);
        viewHolder=new ViewHolder();
        viewHolder.partNo=(TextView)convertView.findViewById(R.id.seat_config_listview_partno);
        viewHolder.description=(Spinner)convertView.findViewById(R.id.seat_config_listview_description_spinner);
        viewHolder.quantity=(TextView)convertView.findViewById(R.id.seat_config_listview_quantity);
        convertView.setTag(viewHolder);
    }
    else{
        viewHolder=(ViewHolder)convertView.getTag();
    }
    viewHolder.partNo.setText(datas.get(position).getPartNo());
     adapter=new ArrayAdapter<SeatConfigCustomObjects>(context,android.R.layout.simple_dropdown_item_1line,fullSeatList);
    adapter.setDropDownViewResource(android.R.layout.simple_dropdown_item_1line);
    viewHolder.description.setAdapter(adapter);
    viewHolder.description.setSelection(0, false);
    viewHolder.description.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {
        @Override
        public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
                Log.e("Position of Data is ", Integer.toString(position));
                datas.set(position, fullSeatList.get(pos));
                Log.e("Data in description", datas.get(position).getDescription());
                Log.e("Data in lisr", datas.get(position).getPartNo());
                notifyDataSetChanged();

        }
        @Override
        public void onNothingSelected(AdapterView<?> parent) {

        }
    });
    viewHolder.quantity.setText(Integer.toString(datas.get(position).getQunatity()));

    return convertView;
}

public class ViewHolder{
    TextView partNo;
    Spinner description;
    TextView quantity;

}

}

Answer 1

在基本适配器类中公开您的数组列表（从主类访问它），然后在按钮单击时将String添加到列表，然后调用notifyDataSetChanged();我有如下所示。请根据您的方便改变变量......

viewHolder.description.setOnItemSelectedListener(new  AdapterView.OnItemSelectedListener() {
    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
       ListViewAdapter <object>;   //Adapter class object
       <object>.datas.add("");  //-----string,position---//
       notifyDataSetChanged();
    }
    @Override
    public void onNothingSelected(AdapterView<?> parent) {

    }
});

适配器类：

public class ListViewAdapter extends BaseAdapter {

  public ArrayList<SeatConfigCustomObjects> datas;
  //-- rest of code--- ///
}

根据android中的Spinner选择更新ListView项

1 个答案: