package com.example.my09_14application;

import android.content.Context;
import android.os.Bundle;

import androidx.fragment.app.Fragment;
import androidx.recyclerview.widget.LinearLayoutManager;
import androidx.recyclerview.widget.RecyclerView;

import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;

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

/**
 * A simple {@link Fragment} subclass.
 * Use the {@link chatFragment#newInstance} factory method to
 * create an instance of this fragment.
 */
public class chatFragment extends Fragment {

    // TODO: Rename parameter arguments, choose names that match
    // the fragment initialization parameters, e.g. ARG_ITEM_NUMBER
    private static final String ARG_PARAM1 = "param1";
    private static final String ARG_PARAM2 = "param2";

    // TODO: Rename and change types of parameters
    private String mParam1;
    private String mParam2;
    private RecyclerView recyclerView1;
    private Myadpter myadpter;
//    private List<String> list_person=new ArrayList<>();
    private List<String> list_chat=new ArrayList<>();
    private Context context;
    private View view;

    public chatFragment() {
        // Required empty public constructor
    }

    /**
     * Use this factory method to create a new instance of
     * this fragment using the provided parameters.
     *
     * @param param1 Parameter 1.
     * @param param2 Parameter 2.
     * @return A new instance of fragment chatFragment.
     */
    // TODO: Rename and change types and number of parameters
    public static chatFragment newInstance(String param1, String param2) {
        chatFragment fragment = new chatFragment();

        Bundle args = new Bundle();
        args.putString(ARG_PARAM1, param1);
        args.putString(ARG_PARAM2, param2);
        fragment.setArguments(args);
        return fragment;
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        if (getArguments() != null) {
            mParam1 = getArguments().getString(ARG_PARAM1);
            mParam2 = getArguments().getString(ARG_PARAM2);
        }
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
//        inflater=LayoutInflater.from(context);
        view=inflater.inflate(R.layout.fragment_chat, container, false);
        recyclerView1=view.findViewById(R.id.recyclerview1);
        // Inflate the layout for this fragment
        add_list();//增加数据
        apply_adpter();//应用适配器
        return view;
    }
    private void add_list()
    {
//        ArrayList list=new ArrayList();
//        list.add("a");list.add("b");list.add("c");
//        list=Arrays.asList(new String[]{"1", "2", "3", "4"});
        for(int i=0;i<50;i++)
        {
            list_chat.add("这是我的第"+i+"个聊天记录");
        }
    }
    private void apply_adpter()
    {
        context=this.getActivity();//获取fragment所绑定的实例对象，若没有这条语句，则context为空，会出现错误
        Myadpter myadpter=new Myadpter(context,list_chat);//适配器
//      LinearLayoutManager 是线性布局管理器，展示的样式跟listview一模一样，格式为上下文
        LinearLayoutManager layoutManager=new LinearLayoutManager(context,LinearLayoutManager.VERTICAL,false);
        recyclerView1.setLayoutManager(layoutManager);
        recyclerView1.setAdapter(myadpter);
    }

}