Question

无法解析＆＃39;中的符号在

LayoutInflater inflater = new LayoutInflater.from(parent.getContext());

这是我的完整课程：

package ir.sangram.sangram.chat;

import android.content.Context;
import android.provider.ContactsContract;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.TextView;

import java.util.ArrayList;
import java.util.List;

import de.hdodenhof.circleimageview.CircleImageView;
import ir.sangram.sangram.R;

/**
 * Created by HOW on 07/04/2017.
 */
class ChatListViewHolder extends RecyclerView.ViewHolder{
    public CircleImageView profile_picture;
    public TextView user_name, last_chat, unread_messages;
    public ChatListViewHolder(View itemView) {
        super(itemView);
        profile_picture = (CircleImageView) itemView.findViewById(R.id.profile_picture);
        user_name = (TextView) itemView.findViewById(R.id.user_name);
        last_chat = (TextView) itemView.findViewById(R.id.last_chat);
        unread_messages = (TextView) itemView.findViewById(R.id.unread_messages);
    }
}
public class ChatListAdapter extends RecyclerView.Adapter<ChatListViewHolder>{
    private List<ChatListData> chat_list = new ArrayList<ChatListData>();

    public ChatListAdapter(List<ChatListData> chat_list) {
        this.chat_list = chat_list;
    }

    @Override
    public ChatListViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        LayoutInflater inflater = new LayoutInflater.from(parent.getContext());
        //LayoutInflater inflater;// = new LayoutInflater.from(parent.getContext());
        //inflater = ( LayoutInflater )parent.getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);//!!!!!!!!!!
        View itemView = inflater.inflate(R.layout.chat_list_row,parent,false);
        return new ChatListViewHolder(itemView);
    }

    @Override
    public void onBindViewHolder(ChatListViewHolder holder, int position) {
        holder.profile_picture.setImageResource(chat_list.get(position).getProfile_picture_id());
        holder.user_name.setText(chat_list.get(position).getUser_name());
        holder.unread_messages.setText(chat_list.get(position).getUnread_messages());
        holder.last_chat.setText(chat_list.get(position).getLast_chat());
    }

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

我该怎么办？请帮我日Thnx

Answer 1

您正在调用LayoutInflater.from，就像调用构造函数一样：

LayoutInflater inflater = new LayoutInflater.from(parent.getContext());

这是构造函数调用语法（new）和方法调用语法（.from）的混合。如果LayoutInflater.from是一个静态嵌套类，它会起作用，但它不是......它只是静态方法。所以你想要：

LayoutInflater inflater = LayoutInflater.from(parent.getContext());

Answer 2

不需要“new”关键字。请尝试以下代码：

@Override
    public ChatListViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {

        LayoutInflater inflater =  LayoutInflater.from(parent.getContext());
        View itemView = inflater.inflate(R.layout.chat_list_row,parent,false);
        return new ChatListViewHolder(itemView);
    }

Answer 3

尝试这样我的朋友会帮助你

  View view = LayoutInflater.from(context).inflate(R.layout.cust_invitation, parent, false);
  ViewHolder viewHolder = new ViewHolder(view);
  return viewHolder;

Answer 4

LayoutInflater.from()是一种static方法，要访问static方法，您无需使用instance关键字创建new。

使用：

LayoutInflater inflater = LayoutInflater.from(parent.getContext());

代替：

LayoutInflater inflater = new LayoutInflater.from(parent.getContext());

无法解析＆＃39;来自＆＃39; Android Studio中出错

4 个答案: