[英]Android Spinner OnItemSelected not firing when using custom child of ArrayAdapter
我有一個自定義實現的數組適配器,正在微調器中使用它來獲取對象的自定義布局。
使用“自定義陣列適配器”時,出現帶有微調器選項的對話框,但是無法選擇它們。 我可以使用“后退”按鈕關閉對話框。
不調用OnItemSelected。 (當我使用后退按鈕時,也不會調用OnNothingSelected)。
這是一些代碼:
定制適配器:
public class AboutSettingsServerAdapter extends ArrayAdapter <ServerItem> {
private ArrayList<ServerItem> mServers;
private Context mContext;
public AboutSettingsServerAdapter(Context context, int resource, ArrayList<ServerItem> serverItems) {
super(context, resource, serverItems);
mContext = context;
mServers = serverItems;
}
public int getCount(){
return mServers.size();
}
public ServerItem getItem(int position){
return mServers.get(position);
}
public long getItemId(int position){
return position;
}
public View getView (int position, View convertView, ViewGroup parent) {
return getAdapterView(position, convertView, parent);
}
public View getDropDownView (int position, View convertView, ViewGroup parent) {
return getAdapterView(position, convertView, parent);
}
public View getAdapterView(int position, View convertView, ViewGroup parent) {
View view = convertView;
if (view == null) {
LayoutInflater inflater = (LayoutInflater) mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = inflater.inflate(R.layout.spinner_item, null);
}
ServerItem item = mServers.get(position);
if (item!= null) {
TextView titleView = (TextView) view.findViewById(R.id.server_settings_title);
TextView subtitleView = (TextView) view.findViewById(R.id.server_settings_subtitle);
if (titleView != null) {
titleView.setText(item.title);
}
if (subtitleView != null) {
subtitleView.setText(item.url + "/" + item.path_extension);
}
}
return view;
}
}
微調器初始化:
AboutSettingsServerAdapter adapter = new AboutSettingsServerAdapter(this, R.layout.module_about_server_spinner_item, servers);
adapter.setDropDownViewResource(R.layout.spinner_item);
adapter.notifyDataSetChanged();
spinner.setAdapter(adapter);
spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int index, long id) {
mSelectedServer = servers.get(index);
}
@Override
public void onNothingSelected(AdapterView<?> parent) {
// TODO Auto-generated method stub
}
});
我的解決方法是從頭開始,並編寫新的ArrayAdapter和新的布局。 無論出於何種原因,這似乎都可以做到。 盡管我根本沒有改變我的方法。
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