第二阶段冲刺八

今天主要完成的任务：构造我的笔记界面实现长按删除，点击跳转

遇到的困难：长按会触发点击

解决办法：将长按结果值返回true即可

源程序代码：

package com.itheima.network.fragment;

import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ListView;
import android.widget.Toast;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import com.itheima.network.R;
import com.itheima.network.activity.DetailNoteActivity;
import com.itheima.network.adpter.Note_localAdapter;
import com.itheima.network.enity.Note_pojo;
import com.itheima.network.store.FindUserId;
import com.zhy.http.okhttp.OkHttpUtils;
import com.zhy.http.okhttp.callback.StringCallback;

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

import butterknife.BindView;
import butterknife.ButterKnife;
import okhttp3.Call;


public class Note_local extends Fragment {

    @BindView(R.id.mynote_list_view)
    ListView mynoteListView;

    private Context mContext;
    private AlertDialog.Builder mDialogBuilder;
    private List<Note_pojo> notePojoList = new ArrayList<>( );
    private  static  final String url = "http://39.101.190.190:8080/CloudNoteServlet/NoteServlet";
    private int userid;
    private Note_localAdapter note_localAdapter;


    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState)
    {
        View view = View.inflate(getActivity( ), R.layout.fragment_note_local, null);
        mContext = view.getContext( );
        ButterKnife.bind(this, view);
        mDialogBuilder = new AlertDialog.Builder(mContext);
        FindUserId findUserId=new FindUserId(mContext);
        userid=findUserId.ReadUserId();
        initData(0);
        return view;
    }


    public void initData(int a)
    {
        if(a!=0)
        {
            notePojoList.subList(0,notePojoList.size()).clear();
        }

        OkHttpUtils
                .get()
                .url(url)
                .addParams("method", "getMyNote")
                .addParams("user_id", "" + userid)
                .build( )
                .execute(new StringCallback( ) {
                    @Override
                    public void onError(Call call, Exception e, int id)
                    {
                        Toast.makeText(mContext, "获取数据失败，请检查网络", Toast.LENGTH_SHORT).show( );
                    }

                    @Override
                    public void onResponse(String response, int id)
                    {
                        JSONArray array = JSONArray.parseArray(response);
                        for (int i = 0; i < array.size( ); i++)
                        {
                            JSONObject json = array.getJSONObject(i);
                            Note_pojo notePojo = new Note_pojo();
                            notePojo.setNote_id(json.getInteger("note_id"));
                            notePojo.setTitle(json.getString("title"));
                            notePojo.setCourse(json.getString("course"));
                            notePojo.setDate(json.getString("date"));
                            notePojoList.add(notePojo);
                        }
                        if(a==0)
                        {
                            initListView();
                        }
                        else
                            {
                            note_localAdapter.refresh();
                            Toast.makeText(mContext,"删除数据成功",Toast.LENGTH_SHORT).show();
                        }

                    }

                });
    }

    private void initListView() {
        note_localAdapter = new Note_localAdapter(mContext,R.layout.mynote_list_item, notePojoList);
        mynoteListView.setAdapter( note_localAdapter);
        mynoteListView.setOnItemClickListener(new AdapterView.OnItemClickListener( )
        {
            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
                Note_pojo notePojo = notePojoList.get(position);
                Toast.makeText(mContext, "你好" + notePojo.getNote_id(), Toast.LENGTH_SHORT).show( );
                Intent intent=new Intent(view.getContext(), DetailNoteActivity.class);
                intent.putExtra("note_id",notePojo.getNote_id());
                intent.putExtra("view","none");
                startActivity(intent);
            }
        });


        mynoteListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener( )
        {
            @Override
            public boolean onItemLongClick(AdapterView<?> parent, View view, int position, long id)
            {
                mDialogBuilder.setTitle("提示");
                mDialogBuilder.setMessage("您是否要删除该条记录？");
                mDialogBuilder.setPositiveButton("是", new DialogInterface.OnClickListener( )
                {
                    @Override
                    public void onClick(DialogInterface dialog, int which)
                    {
                        Note_pojo notePojo = notePojoList.get(position);
                        delete(notePojo.getNote_id());
                        Toast.makeText(mContext, "删除成功" + notePojo.getNote_id(), Toast.LENGTH_SHORT).show( );
                    }
                });

                mDialogBuilder.setNegativeButton("否", new DialogInterface.OnClickListener( )
                {
                    @Override
                    public void onClick(DialogInterface dialog, int which)
                    {
                        dialog.dismiss( );
                    }
                });
                mDialogBuilder.show( );
                return true;
            }
        });
    }

    private void delete(int note_id)
    {
        OkHttpUtils
                .post()
                .url(url)
                .addParams("method", "deleteMyNote")
                .addParams("user_id", ""+userid)
                .addParams("note_id", ""+note_id)
                .build()
                .execute(new StringCallback( ) {
                    @Override
                    public void onError(Call call, Exception e, int id)
                    {
                        Toast.makeText(mContext,"删除数据失败，请检查网络",Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onResponse(String response, int id)
                    {
                        if(response.equals("success"))
                        {
                            initData(1);
                        }

                    }
                });

    }

    public interface  noterefresh
    {
        public void refresh();
    }


}