[英]Android set items into Spinner by custom Adapter
在我的應用程序中,我有自定義BaseAdapter
for Spinner
用於將List中的數據插入到
在這個方法中,我可以將List
作為數據返回:
public List<String> getSmsNumberList() {
return Arrays.asList(smsNumbers.split("\\s*,\\s*"));
}
在成功獲取數據之后,我准備插入Spinner:
smsNumbers = G.getInfo().getSmsNumberList();
panel_numbers = (String[]) smsNumbers.toArray(new String[smsNumbers.size()]);
SpinnerArrayAdapter dataAdapter = new SpinnerArrayAdapter(this);
spinner_panel_numbers.setAdapter(dataAdapter);
smsNumbers
有一些getSmsNumberList()
函數返回的數據,現在我在下面使用自定義BaseAdapter來查看Spinner
數據:
適配器代碼更新
private class SpinnerArrayAdapter extends BaseAdapter {
private final LayoutInflater mInflater;
List<String> list;
public SpinnerArrayAdapter(ActivitySmsSendGroup con, List<String> list) {
mInflater = LayoutInflater.from(con);
this.list = list;
}
@Override
public int getCount() {
return list.length;
}
@Override
public Object getItem(int position) {
return position;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final ListContent holder;
View v = convertView;
if (v == null) {
v = mInflater.inflate(R.layout.panel_number_spinner_style, null);
holder = new ListContent();
holder.name = (TextView) v.findViewById(R.id.textView1);
v.setTag(holder);
} else {
holder = (ListContent) v.getTag();
}
holder.name.setText(list[position] + "");
return v;
}
}
static class ListContent {
TextView name;
}
不幸的是我的Spinner
對話框沒有數據而且空了
在你的適配器中,你應該為你的ArrayList添加一個方法和變量(在這里添加你自己的對象)
public static ArrayList<ListObject> listItems;
public void addItems(ArrayList<ListObject> mListItems) {
listItems = new ArrayList<ListObject>();
listItems.clear();
listItems.addAll(mListItems);
notifyDataSetChanged();
}
然后在你的主類課程中
SpinnerArrayAdapter.addItems(myList);
注意:在getView中確保你在類中設置基於listItem的變量即。 title.setText(listItems.get(位置)。名稱);
這里:
panel_numbers =(String [])smsNumbers.toArray(new String [smsNumbers.size()]);
因為已經有List所以不需要將它轉換為Array只需要向SpinnerArrayAdapter
類的構造函數添加一個參數:
List<String> list;
public SpinnerArrayAdapter(ActivitySmsSendGroup con,List<String> list) {
mInflater = LayoutInflater.from(con);
this.list=list;
}
現在,使用list
,而不是panel_numbers
在SpinnerArrayAdapter類無處不在
創建對象時,從SpinnerArrayAdapter
類構造函數中的Activity傳遞List:
SpinnerArrayAdapter dataAdapter = new SpinnerArrayAdapter(this,smsNumbers);
您的適配器應如下所示:
@Override
public View getDropDownView(int position, View convertView, ViewGroup parent){
return getCustomView(position, convertView, parent);
}
@Override
public View getView(int position, View convertView, ViewGroup parent){
return getCustomView(position, convertView, parent);
}
public View getCustomView(final int position, View convertView, ViewGroup parent){
LayoutInflater inflater = ((Activity) context).getLayoutInflater();
View rowView = inflater.inflate(R.layout.spinner_row, parent, false);
spnItemName = (TextView) rowView.findViewById(R.id.spnItemName);
spnItemDel = (TextView) rowView.findViewById(R.id.spnItemDel);
spnItemName.setText(iName.get(position)+"");
spnItemDel.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(context, "Deleted", Toast.LENGTH_SHORT).show();
//iName[position] = null;
iName.remove(position);
notifyDataSetChanged();
}
});
return rowView;
}
有關完整源代碼,請參閱我的github項目
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