私は Android アプリケーションを開発しており、自分用のカスタム アダプターを持っていListView
ます。プルを使用して、このようなライブラリを更新したいと考えています。これは ArrayAdapter では正常に機能しますが、カスタム アダプターでは機能しません。
カスタム アダプターを使用してプルを更新するにはどうすればよいですか?
ここに私のアダプターコード:
public class AdvertListAdapter extends BaseAdapter {
private AdvertListActivity activity;
private int currentFirstVisibleItem=0;
private int currentLastVisibleItem=8;
public AdvertListAdapter(AdvertListActivity activity) {
this.activity = activity;
}
public void setFirstVisibleItem(int currentFirstVisibleItem) {
this.currentFirstVisibleItem=currentFirstVisibleItem;
}
public void setLastVisibleItem(int currentLastVisibleItem) {
this.currentLastVisibleItem=currentLastVisibleItem;
}
@Override
public int getCount() {
return activity.getAdvertList().size();
}
@Override
public Advert getItem(int pos) {
return activity.getAdvertList().get(pos);
}
@Override
public long getItemId(int pos) {
return activity.getAdvertList().get(pos).getId();
}
private class ViewHolder {
public ImageView image;
public TextView title;
public TextView price;
public TextView size;
public TextView city;
}
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder view;
LayoutInflater inflator = activity.getLayoutInflater();
if(convertView == null) {
view = new ViewHolder();
convertView = inflator.inflate(R.layout.listview_advertlist, null);
view.image = (ImageView) convertView.findViewById(R.id.advertImage);
view.title = (TextView) convertView.findViewById(R.id.advertTitleText);
view.price = (TextView) convertView.findViewById(R.id.advertPriceText);
view.size = (TextView) convertView.findViewById(R.id.advertSizeText);
view.city = (TextView) convertView.findViewById(R.id.advertCityText);
convertView.setTag(view);
}else {
view = (ViewHolder) convertView.getTag();
}
Advert advert = activity.getAdvertList().get(position);
view.title.setText(advert.getTitle());
view.price.setText(String.valueOf(advert.getPrice()+"€"));
view.size.setText("Taille: "+advert.getSize());
view.city.setText(advert.getCity());
if(position <= currentFirstVisibleItem || position >= currentLastVisibleItem) {
view.image.setImageResource(R.drawable.defaultadvertimage);
ServiceHelper.loadAsyncImage(view.image, activity.getApplicationContext(), String.valueOf(advert.getId()+"-mini"), "advert");
}
return convertView;
}
}
ここに私の活動コード:
list = (PullToRefreshListView) findViewById(R.id.advertList);
advertList = getAdvertList();
((PullToRefreshListView) list).setOnRefreshListener(new OnRefreshListener() {
@Override
public void onRefresh() {
// Do work to refresh the list here.
new GetDataTask().execute();
}
});
list.setAdapter(adapter);