java从ListView Android中的微调器获取选定值
我有一个微调器列表视图,试图从中获取所选值。如果列表中只有一个项目,一些微调器会自动选择第一个选项,所以我觉得
setOnItemSelectedListener
不一定行吗?不管怎样,我都不确定如何编写这个场景。即使我正确地编写了侦听器,我如何在类中使用它来处理适配器
自定义适配器
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, 安卓.R.layout.simple_list_item_1, partLotNumbersArrayList.get(position));
adp1.setDropDownViewResource(安卓.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;
}
}
我在哪里调用代码。显然,我在这里遇到了一个错误,因为ArrayList无法转换为微调器,但我不确定如何获取适配器的视图,然后是后续微调器的视图
// 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
}
});
共 (0) 个答案