[問題] java.lang.IllegalStateException

看板AndroidDev作者x049 (joker)時間10年前 (2015/10/06 23:44)推噓1(1推 0噓 38→)

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各位前輩大家好,小弟接觸android沒多久還是位新手, 目前在做作品時遇到了一個瓶頸,是在ListView.setAdapter() 短時間內大量重複更新時跳出以下錯誤: java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. Make sure your adapter calls notifyDataSetChanged() when its content changes. [in ListView(2131296313, class android.widget.ListView) with Adapter(class com.example.avalon.PlayerAdapter)] 以下是小弟寫的Adapter的程式碼: public class PlayerAdapter extends BaseAdapter { private LayoutInflater playersInflater; public List<Player> playerslist; public PlayerAdapter(Context context, List<Player> playerslist) { // TODO 自動產生的建構子 Stub if(playerslist!=null){ playersInflater=LayoutInflater.from(context); this.playerslist=playerslist; PlayerAdapter.this.notifyDataSetChanged(); } } @Override public int getCount() { // TODO 自動產生的方法 Stub return (playerslist==null)? 0 : playerslist.size(); } @Oerride public Object getItem(int position) { // TODO 自動產生的方法 Stub return playerslist.get(position); } @Override public long getItemId(int position) { // TODO 自動產生的方法 Stub return playerslist.indexOf(getItem(position)); } @Override public View getView(int position, View convertView, ViewGroup parent) { // TODO 自動產生的方法 Stub if(playerslist.size()!=0){ try{ convertView=playersInflater.inflate (R.layout.players_list_item, null); ImageView iv_Players_Status=(ImageView) convertView.findViewById(R.id.IV_Players_Status); TextView tv_Players_Order=(TextView) convertView.findViewById(R.id.TV_Players_Order); TextView tv_Players_Anonymous=(TextView) convertView.findViewById(R.id.TV_Players_Anonymous); iv_Players_Status.setImageResource (playerslist.get(position).getStatus()); tv_Players_Order.setText(String.valueOf (playerslist.get(position).getOrder()).toString()); tv_Players_Anonymous.setText (playerslist.get(position).getAnonymity()); }catch(Exception e){ e.printStackTrace(); Log.e("text","PlayerAdapter="+e.toString()); } return convertView; }else{ convertView=playersInflater.inflate(R.layout.null_layout, null); return convertView; } } } 這幾天爬文有看到getCount()內寫成 return (playerslist==null)? 0 : playerslist.size(); 還有在更新資料時呼叫notifyDataSetChanged()通知系統更新Adapter 可是在大量更新時app還是會崩潰跳出此錯誤有聽人說可以在更新時隱藏按鈕,到更新完後在顯示按鈕但是小弟是寫socket連伺服器,所以可以多人更新所以以上方法可能無法解決還希望各位可以協助解決,謝謝~ -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 1.175.134.228 ※ 文章網址: https://www.ptt.cc/bbs/AndroidDev/M.1444146266.A.E50.html

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