我正在尝试使用settag选择单选按钮来存储其在我的BaseAdapter中的位置,并从其他类访问它。
我可以选择单项选择,但我需要在选择单选按钮时获取图像的名称。
这是我的BaseAdapter GetView:
public View getView(final int position, View convertView, ViewGroup parent) {
ViewHolder holder;
if (convertView == null) {
convertView = l_Inflater.inflate(R.layout.item_details_view, null);
holder = new ViewHolder();
holder.txt_itemName = (TextView) convertView.findViewById(R.id.name);
holder.txt_itemDescription = (TextView) convertView.findViewById(R.id.itemDescription);
holder.txt_itemPrice = (TextView) convertView.findViewById(R.id.price);
holder.itemImage = (ImageView) convertView.findViewById(R.id.photo);
holder.button = (RadioButton)convertView.findViewById(R.id.rbSelectedOption);
convertView.setTag(holder);
} else {
holder = (ViewHolder) convertView.getTag();
}
holder.txt_itemName.setText(itemDetailsrrayList.get(position).getName());
holder.txt_itemDescription.setText(itemDetailsrrayList.get(position).getItemDescription());
holder.txt_itemPrice.setText(itemDetailsrrayList.get(position).getPrice());
holder.itemImage.setImageResource(imgid[itemDetailsrrayList.get(position).getImageNumber() - 1]);
holder.button.setTag(position);
holder.button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
if((position != mSelectedPosition && mSelectedRB != null)){
mSelectedRB.setChecked(false);
}
mSelectedPosition = position;
mSelectedRB = (RadioButton)v;
}
});
if(mSelectedPosition != position){
holder.button.setChecked(false);
}else{
holder.button.setChecked(true);
if(mSelectedRB != null && holder.button!= mSelectedRB){
mSelectedRB = holder.button;
}
}
return convertView;
}
这是我的ListViewActivity:
ArrayList<ItemDetails> image_details = GetSearchResults();
final ListView lv1 = (ListView) findViewById(R.id.list);
lv1.setAdapter(new ItemListBaseAdapter(this, image_details));
lv1.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
final RadioButton SelectedOption = (RadioButton) findViewById(R.id.rbSelectedOption);
lv1.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
int pos = (Integer) v.getTag();
Object o = SelectedOption.getTag(pos);
ItemDetails obj_itemDetails = (ItemDetails)o;
Toast.makeText(ListViewImagesActivity.this, "You have chosen : " + " " + obj_itemDetails.getName(), Toast.LENGTH_LONG).show();
CarName =obj_itemDetails.getName();
}
});
我无法通过使用getTag来获取位置:
int pos = (Integer) v.getTag();
Object o = SelectedOption.getTag(pos);
有谁能说我如何从BaseAdapter类到ListViewActivity获得这个位置?
答案 0 :(得分:1)
尝试这样的事情:
在适配器中声明两个公共字段:
public int SelectedRBPosition;
public RadioButton SelectedRB;
选中时使用它们来保存位置和RadioButton 创建两种方法来获取它们;
public int getSelectedRadioButtonPosition(){
return SelectedRBPosition;
}
public RadioButton getSelectedRadioButton(){
return SelectedRB;
}
在活动中为adpter声明一个字段:
private ItemListBaseAdapter adapter = new ItemListBaseAdapter(this, image_details);
final ListView lv1 = (ListView) findViewById(R.id.list);
lv1.setAdapter(adapter);
lv1.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
当你需要它们时,请调用get方法:
int pos = adapter.getSelectedRBPosition();
RadioButton rb = adapter.getSelectedRB();