android – Recycler视图显示单个项目

我面临一个奇怪的错误,recyclelerview只显示一个单一的项目。下面是我的recyclerview适配器的代码:

public class ChatAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {


List<chat> chats;
String username;
final int My=0,Their=1;

public ChatAdapter(List<chat> chats) {
    this.chats = chats;
    this.username = PushApp.getApp().getSPF().getStringData(Constants.ANAME);
}


@Override
public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    RecyclerView.ViewHolder viewHolder;
    LayoutInflater inflater = LayoutInflater.from(parent.getContext());

    switch (viewType) {
        case My:
            View v1 = inflater.inflate(R.layout.my_chat_child, parent, false);
            viewHolder = new MyChatHolder(v1);
            break;
        case Their:
            View v2 = inflater.inflate(R.layout.their_chat_child, parent, false);
            viewHolder = new TheirMessageHolder(v2);
            break;
        default:
            View v = inflater.inflate(R.layout.my_chat_child, parent, false);
            viewHolder = new MyChatHolder(v);
            break;
    }

    return viewHolder;

}

@Override
public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
    switch (holder.getItemViewType()) {
        case My:
            MyChatHolder myChatHolder = (MyChatHolder) holder;
            myChatHolder.setMyMessage(chats.get(position).getMessage());
            break;

        case Their:
            TheirMessageHolder theirMessageHolder = (TheirMessageHolder) holder;
            theirMessageHolder.setTheirChat(chats.get(position).getFrom(), chats.get(position).getMessage());
            break;
    }
}

@Override
public int getItemViewType(int position) {
    if(username.equalsIgnoreCase(chats.get(position).getFrom()))
        return My;
    return Their;
}

@Override
public int getItemCount() {
    return chats.size();
}}

我已经使用这个代码在其他应用程序,它的工作完美。我已经检查了交谈数据,这也是完美的。

这里是链接到git repo布局文件:
layout files

最佳答案
对于项目视图,不要使用match_parent作为height。一个项目垂直填充整个屏幕,所以你看不到另一个。

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