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我终于有一些运气，通过在我的getView（）中创建一个开关块来显示节标题。在这样做的时候，我用适配器创建了一个问题，因为现在我的ListView一遍又一遍地重复了顶层项目。我发现有其他人有类似的问题，但他们解决了通过添加convertView.setTag（持有人）;我已经有了这个，所以我相信我的问题与我设置开关块的方式有关。也许是一个语法问题导致事情不能正确排列。ListView与节标题滚动时重复项目
任何帮助，将不胜感激。这里是我的适配器：
public class PlayerAdapter extends BaseAdapter {
private Context mContext;
private static final int TYPE_ITEM = 0;
private static final int TYPE_SEPARATOR = 1;
private ArrayList<Player> mPlayers = new ArrayList<>();
private TreeSet<Integer> sectionHeader = new TreeSet<>();
public PlayerAdapter(Context context, ArrayList<Player> players) {
mContext = context;
mPlayers = players;
}
public void addItem(final Player player) {
mPlayers.add(player);
notifyDataSetChanged();
}
public void addSectionHeaderItem(final Player player) {
mPlayers.add(player);
sectionHeader.add(mPlayers.size() -1);
notifyDataSetChanged();
}
@Override
public int getItemViewType(int position) {
return sectionHeader.contains(position) ? TYPE_SEPARATOR : TYPE_ITEM;
}
@Override
public int getViewTypeCount() {
return 2;
}
@Override
public int getCount() {
return mPlayers.size();
}
@Override
public Object getItem(int position) {
return mPlayers.get(position);
}
@Override
public long getItemId(int position) {
return 0;
}
@Override
public boolean isEnabled(int position) {
int rowType = getItemViewType(position);
if(rowType == TYPE_SEPARATOR) {
return false;
}
return true;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder holder = new ViewHolder();
int rowType = getItemViewType(position);
if (convertView == null) {
Player player = mPlayers.get(position);
switch (rowType){
case TYPE_ITEM:
convertView = LayoutInflater.from(mContext).inflate(R.layout.player_list_item_layout, null);
holder.playerNameTextView = (TextView) convertView.findViewById(R.id.playerNameTextView);
holder.playerValueTextView = (TextView) convertView.findViewById(R.id.playerValueTextView);
holder.remainingCapTextView = (TextView) convertView.findViewById(R.id.remainingCapTextView);
holder.username = (TextView) convertView.findViewById(R.id.opponentUsername);
holder.status = (TextView) convertView.findViewById(R.id.statusTextView);
holder.vsTeamAbbrev = (TextView) convertView.findViewById(R.id.vsTeam);
holder.resultsTextView = (TextView) convertView.findViewById(R.id.resultsTextView);
DecimalFormat formatter = new DecimalFormat("$#,###");
holder.playerNameTextView.setText(player.getName());
holder.playerValueTextView.setText(formatter.format(Double.parseDouble(player.getValue())));
holder.remainingCapTextView.setText(formatter.format(Double.parseDouble(player.getCap())));
holder.username.setText(player.getUsername());
holder.status.setText(player.getStatus());
holder.vsTeamAbbrev.setText(player.getVsTeamAbbrev());
holder.resultsTextView.setText(player.getResultsTextView());
if (player.isMatchMade()) {
holder.status.setVisibility(View.VISIBLE);
}
convertView.setTag(holder);
break;
case TYPE_SEPARATOR:
convertView = LayoutInflater.from(mContext).inflate(R.layout.player_section_header, null);
holder.playerNameTextView = (TextView) convertView.findViewById(R.id.lastPlayer);
holder.lastPlayerDate = (TextView) convertView.findViewById(R.id.lastPlayerDate);
holder.playerNameTextView.setText(player.getName());
holder.lastPlayerDate.setText(player.getLastPlayerDate());
convertView.setTag(holder);
break;
}
} else {
holder = (ViewHolder) convertView.getTag();
}
return convertView;
}
private static class ViewHolder {
//item views
TextView playerValueTextView;
TextView playerNameTextView;
TextView remainingCapTextView;
TextView username;
TextView status;
TextView vsTeamAbbrev;
TextView resultsTextView;
//section header views
TextView lastPlayer;
TextView lastPlayerDate;
}
}
你有没有在列表本身多个标头？也许你在填充列表时添加额外的头文件。 –
这是一个很好的想法， –
有趣的是，即使我注释掉创建标题的块，列表视图仍然会重复项目。另外，我的IDE说永远不会使用我的else块中的持有者变量。我不知道这是不是问题。 –