获取的行数的总数在自定义列表视图的Android [英] Get the total count of number of rows in the Custom Listview Android
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问题描述
我试图得到getView定制列表视图的总数。但要在不同的布局来显示。这是我的onCreatedView。我不知道如何膨胀的布局。感谢您的帮助。
私有静态的ListView addDropListView = NULL;
私人TransactionAddDropAdapter addDropAdapter = NULL;公共查看onCreateView（LayoutInflater充气器，容器的ViewGroup，
捆绑savedInstanceState）{fragmentPendingTrades = inflater.inflate（R.layout.fragment_transactions_pending，集装箱，FALSE）;
pendingTradesView =吹气;返回fragmentPendingTrades;
}公共无效onViewCreated（最终查看视图，最终捆绑savedInstanceState）{this.addDropListView =（ListView控件）view.findViewById（R.id.transactions_pending_transactionsListView）;
this.addDropAdapter =新TransactionAddDropAdapter（pendingTradesView）;
this.addDropListView.setAdapter（this.addDropAdapter）;
this.emptyTransationsContainer = view.findViewById（R.id.transactions_pending_transactions_emptyContainer）;TextView的getTotalCount =（TextView中）view.findViewById（R.id.transactions_pending_TransactionsAddDropCount）;getTotalCount.setText（+ addDropListView.getCount（））;
}
下面是我的Holderview是得到getView
公共类TransactionAddDropAdapter延伸BaseAdapter { 私人LayoutInflater吹气= NULL;
私人列表＆LT; TransactionAddDrop＆GT; addDropList =新的ArrayList＆LT; TransactionAddDrop＆GT;（）; 公共TransactionAddDropAdapter（LayoutInflater气筒）{
this.inflater =吹气;
} 公共无效setAddDropList（列表＆LT; TransactionAddDrop＆GT; addDropList）{
clearAddDropList（）; 对于（TransactionAddDrop广告：addDropList）{
如果（ad.isStateApprove（））{
this.addDropApprovalsList.add（广告）;
}其他{
this.addDropList.add（广告）;
}
}
} 公共无效clearAddDropList（）{
this.addDropList.clear（）;
this.addDropApprovalsList.clear（）;
} @覆盖
公众诠释的getCount（）{
INT大小= this.addDropList.size（）; 如果（this.addDropApprovalsList.size（）大于0）{
大小+ = 1;
} 返回的大小;
} @覆盖
公共对象的getItem（INT位置）{
尝试{
如果（this.addDropList == NULL）{
返回null;
}否则如果（仓位＆LT; addDropList.size（））{
返回this.addDropList.get（位置）;
}其他{
返回this.addDropApprovalsList;
}
}赶上（例外五）{
返回null;
}
} @覆盖
众长getItemId（INT为arg0）{
// TODO自动生成方法存根
返回0;
} @覆盖
公共查看getView（最终诠释的立场，观点convertView，
父母的ViewGroup）{ 最后TransactionAddDrop addDropData = this.addDropList.get（位置）; TransactionAddDropViewHolder支架=无效;
如果（convertView == NULL）{
convertView = inflater.inflate（R.layout.fragment_pending_transaction_list_item，NULL）;
持有人=新TransactionAddDropViewHolder（）; holder.withdrawButton = convertView.findViewById（R.id.pendingTransactionItem_withdrawButton）; holder.addContainer =（的LinearLayout）convertView.findViewById（R.id.pendingTransactionItem_addContainer）;
holder.dropContainer =（的LinearLayout）convertView.findViewById（R.id.pendingTransactionItem_dropContainer）;
holder.rootView = convertView.findViewById（R.id.swipeRight）;
holder.swipeButtons（）;
convertView.setTag（保持器）;
}其他{
支架=（TransactionAddDropViewHolder）convertView.getTag（）;
holder.swipeButtons（）;
}
}
解决方案
好吧，我觉得我知道是怎么回事。你设置你的的ListView 并添加了 TransactionAddDropAdapter ，然后设置项目的总金额。
this.addDropListView =（ListView控件）view.findViewById（R.id.transactions_pending_transactionsListView）;
this.addDropAdapter =新TransactionAddDropAdapter（pendingTradesView）;
this.addDropListView.setAdapter（this.addDropAdapter）;TextView的getTotalCount =（TextView中）view.findViewById（R.id.transactions_pending_TransactionsAddDropCount）;
getTotalCount.setText（+ addDropListView.getCount（））;
不过，在这一点上，你有没有叫 setAddDropList（列表＆LT; TransactionAddDrop＆GT; addDropList）在 addDropAdapter ，所以 addDropList 在 getCount将（）仍然是一个空数组，所以 getCount将（）= = 0 ，这就是为什么你看到显示0。
所以，你需要找到你叫 addDropAdapter.setAddDropList（），然后调用 getTotalCount.setText（+ addDropListView.getCount（ ））; 权后，以更新的行总数
I am trying to getting the total Count of the getView custom listview. But want to display in the different layout. Here is my onCreatedView. I am not sure how to inflate the layout. Thanks for all your help.
private static ListView addDropListView = null;
private TransactionAddDropAdapter addDropAdapter = null;
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
fragmentPendingTrades = inflater.inflate(R.layout.fragment_transactions_pending, container, false);
pendingTradesView = inflater;
return fragmentPendingTrades;
}
public void onViewCreated(final View view, final Bundle savedInstanceState) {
this.addDropListView = (ListView) view.findViewById(R.id.transactions_pending_transactionsListView);
this.addDropAdapter = new TransactionAddDropAdapter(pendingTradesView);
this.addDropListView.setAdapter(this.addDropAdapter);
this.emptyTransationsContainer = view.findViewById(R.id.transactions_pending_transactions_emptyContainer);
TextView getTotalCount = (TextView) view.findViewById(R.id.transactions_pending_TransactionsAddDropCount);
getTotalCount.setText(""+addDropListView.getCount());
}
Here is my Holderview that get the getView
public class TransactionAddDropAdapter extends BaseAdapter {
private LayoutInflater inflater = null;
private List<TransactionAddDrop> addDropList = new ArrayList<TransactionAddDrop>();
public TransactionAddDropAdapter(LayoutInflater inflater) {
this.inflater = inflater;
}
public void setAddDropList(List<TransactionAddDrop> addDropList) {
clearAddDropList();
for (TransactionAddDrop ad : addDropList) {
if (ad.isStateApprove()) {
this.addDropApprovalsList.add(ad);
} else {
this.addDropList.add(ad);
}
}
}
public void clearAddDropList() {
this.addDropList.clear();
this.addDropApprovalsList.clear();
}
@Override
public int getCount() {
int size = this.addDropList.size();
if (this.addDropApprovalsList.size() > 0) {
size += 1;
}
return size;
}
@Override
public Object getItem(int position) {
try {
if (this.addDropList == null) {
return null;
} else if (position < addDropList.size()) {
return this.addDropList.get(position);
} else {
return this.addDropApprovalsList;
}
} catch (Exception e) {
return null;
}
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return 0;
}
@Override
public View getView(final int position, View convertView,
ViewGroup parent) {
final TransactionAddDrop addDropData = this.addDropList.get(position);
TransactionAddDropViewHolder holder = null;
if (convertView == null) {
convertView = inflater.inflate(R.layout.fragment_pending_transaction_list_item, null);
holder = new TransactionAddDropViewHolder();
holder.withdrawButton = convertView.findViewById(R.id.pendingTransactionItem_withdrawButton);
holder.addContainer = (LinearLayout) convertView.findViewById(R.id.pendingTransactionItem_addContainer);
holder.dropContainer = (LinearLayout) convertView.findViewById(R.id.pendingTransactionItem_dropContainer);
holder.rootView = convertView.findViewById(R.id.swipeRight);
holder.swipeButtons();
convertView.setTag(holder);
} else {
holder = (TransactionAddDropViewHolder) convertView.getTag();
holder.swipeButtons();
}
}
解决方案
Ok, I "think" I know what's going on here. You setup your ListView and add its TransactionAddDropAdapter, and then set the total amount of items.
this.addDropListView = (ListView) view.findViewById(R.id.transactions_pending_transactionsListView);
this.addDropAdapter = new TransactionAddDropAdapter(pendingTradesView);
this.addDropListView.setAdapter(this.addDropAdapter);
TextView getTotalCount = (TextView) view.findViewById(R.id.transactions_pending_TransactionsAddDropCount);
getTotalCount.setText(""+addDropListView.getCount());
However, at this point, you haven't called setAddDropList(List<TransactionAddDrop> addDropList) on addDropAdapter, so addDropList in getCount() is still an empty array, so getCount() == 0, which is why you are seeing 0 being displayed.
So, you need to find where you call addDropAdapter.setAddDropList() and then call getTotalCount.setText(""+addDropListView.getCount()); right after in order to update the total number of rows.
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