Question

我有一个Spinners的ListView我试图从中获取所选的值。如果列表中只有一个项目，某些Spinners会自动选择第一个选项，所以我觉得

setOnItemSelectedListener

不一定有效吗？无论哪种方式，我都不确定如何编码这种情况。即使我正确地将侦听器编码，我如何在我的班级中使用它来使用适配器？

CustomAdapter

public class CustomPLNViewAdapter extends BaseAdapter{

private static ArrayList<ArrayList<String>> partLotNumbersArrayList;
private static ArrayList<String> partNames;

private LayoutInflater mInflater;

private Context myContext;

public CustomPLNViewAdapter(Context context, ArrayList<ArrayList<String>> results, ArrayList<String> parts){
    partLotNumbersArrayList = results;
    partNames = parts;
    mInflater = LayoutInflater.from(context);
    myContext = context;
}
@Override
public int getCount() {
    return partLotNumbersArrayList.size();
}

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

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

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    ViewHolder holder;
    if (convertView == null) {
        convertView = mInflater.inflate(R.layout.view_assembly_parts, null);
        holder = new ViewHolder();
        holder.txtName = (TextView) convertView.findViewById(R.id.partName);
        holder.spinner = (Spinner) convertView.findViewById(R.id.LotNumbers);
        convertView.setTag(holder);
    } else {
        holder = (ViewHolder) convertView.getTag();
    }

    holder.txtName.setText(partNames.get(position));        

    ArrayAdapter<String> adp1=new ArrayAdapter<String>(myContext, android.R.layout.simple_list_item_1, partLotNumbersArrayList.get(position));          
    adp1.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);

    //set the adapter to the spinnner
    holder.spinner.setAdapter(adp1);

    //if there is only one other part besides "" then set that as default part
    if(partLotNumbersArrayList.get(position).size() == 2){
        holder.spinner.setSelection(1);
    }   

    return convertView;
}



static class ViewHolder {
    TextView txtName;
    Spinner spinner;
}
}

我在调用代码的地方。显然我在这里得到一个错误，因为ArrayList不能转换为Spinner，但我不确定如何获得适配器的视图，然后是后续的微调器？

// save button click event
    saveButton.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View arg0) {
            Log.d("lv count", Integer.toString(lv.getCount()));

            //iterate through listview, 
            for(int i = 0; i < lv.getCount(); i++){
                Spinner temp = (Spinner) lv.getItemAtPosition(i);                   
                Log.d("lv isItemCheck", temp.getSelectedItem().toString());

            }   
            //check to make sure all items have been selected
            if(!checkAllParts()){
                Toast.makeText(getApplicationContext(), "Please Select All List Items", Toast.LENGTH_SHORT).show();
            }
            else{
                Toast.makeText(getApplicationContext(), "All items have been selected", Toast.LENGTH_SHORT).show();
            }
            //go back to previous intent, return 100 that saving succeeded 

            //close intent
        }
    });

从ListView Android中的Spinner获取选定值

0 个答案: