自己整理的android studio 自定义弹框获取和修改listview的数据

1.自定义编辑弹框update.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="姓名" />

    <EditText
        android:id="@+id/viewName"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <requestFocus />
    </EditText>

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="电话号码" />

    <EditText
        android:id="@+id/viewPhone"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

</LinearLayout>

2.listview界面activity_controller.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.example.hyld.controller">

    <TextView
        android:id="@+id/getName"
        android:layout_width="match_parent"
        android:layout_height="60dp"/>

    <Button
        android:id="@+id/up"
        android:layout_width="match_parent"
        android:layout_height="60dp"
        android:text="修改"></Button>

    <TextView
        android:id="@+id/getNumber"
        android:layout_width="match_parent"
        android:layout_height="60dp"/>

    <TextView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="60dp"/>


    <ListView
        android:id="@+id/listview"
        android:layout_width="match_parent"
        android:layout_height="match_parent">
    </ListView>

</LinearLayout>

3.listview操作controller.class

package com.example.hyld;

import androidx.appcompat.app.AppCompatActivity;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Adapter;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.SimpleAdapter;
import android.widget.TextView;
import android.widget.Toast;

import android.widget.BaseAdapter;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class controller extends AppCompatActivity {

    TextView tv1;
    TextView tv2;
    Button btn1;
    ListView listView1;
    SimpleAdapter adapter;
    List<Map<String, String>> data = new ArrayList<>();
    int current = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_controller);
        listView1 = findViewById(R.id.listview);//在视图中找到ListView
        tv1 = findViewById(R.id.getName);
        tv2 = findViewById(R.id.getNumber);
        Intent intent=getIntent();
        Bundle bundle = intent.getExtras();
        String name = bundle.getString("name");
        tv1.setText(name);
        int number = bundle.getInt("number");
        tv2.setText(number+"");

        //2.准备显示的数据

        Map<String, String> map1 = new HashMap<>();
        map1.put("name", "数据1");
        map1.put("phone", "1111111");

        Map<String, String> map2 = new HashMap<>();
        map2.put("name", "数据2");
        map2.put("phone", "2222222");

        Map<String, String> map3 = new HashMap<>();
        map3.put("name", "数据3");
        map3.put("phone", "3333333");

        Map<String, String> map4 = new HashMap<>();
        map4.put("name", "数据4");
        map4.put("phone", "444444");

        data.add(map1);
        data.add(map2);
        data.add(map3);
        data.add(map4);
        adapter = new SimpleAdapter(this, data, R.layout.item, new String[]{"name", "phone"}, new int[]{R.id.tv_name, R.id.tv_phone}
        );
        listView1.setAdapter(adapter);
        listView1.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            @Override
            public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
                switch (i){
                    case 0:
                        Map<String, String> map = (Map<String, String>)adapterView.getItemAtPosition(i);
                        String name = map.get("name");
                        String phone = map.get("phone");
                        Toast.makeText(controller.this,"你点击了"+i+"按钮--"+name+"--"+phone, Toast.LENGTH_SHORT).show();
                        showDialog(name,phone,i);
                        break;//当我们点击某一项就能吐司我们点了哪一项

                    case 1:
                        map = (Map<String, String>)adapterView.getItemAtPosition(i);
                        name = map.get("name");
                        phone = map.get("phone");
                        Toast.makeText(controller.this,"你点击了"+i+"按钮--"+name+"--"+phone, Toast.LENGTH_SHORT).show();
                        showDialog(name,phone,i);
                        break;

                    case 2:
                        map = (Map<String, String>)adapterView.getItemAtPosition(i);
                        name = map.get("name");
                        phone = map.get("phone");
                        Toast.makeText(controller.this,"你点击了"+i+"按钮--"+name+"--"+phone, Toast.LENGTH_SHORT).show();
                        showDialog(name,phone,i);
                        break;

                    case 3:
                        map = (Map<String, String>)adapterView.getItemAtPosition(i);
                        name = map.get("name");
                        phone = map.get("phone");
                        Toast.makeText(controller.this,"你点击了"+i+"按钮--"+name+"--"+phone, Toast.LENGTH_SHORT).show();
                        showDialog(name,phone,i);
                        break;

                    case 4:
                        map = (Map<String, String>)adapterView.getItemAtPosition(i);
                        name = map.get("name");
                        phone = map.get("phone");
                        Toast.makeText(controller.this,"你点击了"+i+"按钮--"+name+"--"+phone, Toast.LENGTH_SHORT).show();
                        showDialog(name,phone,i);
                        break;
                }
            }
        });

        btn1 = findViewById(R.id.up);
        btn1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Map<String, String> map1 = new HashMap<>();
                map1.put("name", "修改");
                map1.put("phone", "888888");
                data.set(2,map1);
                adapter.notifyDataSetChanged();
            }
        });

    }

    //自定义弹框修改
    public void showDialog(String name,String phone,int i){
        LayoutInflater factory = LayoutInflater.from(this);
        final View textEntryView = factory.inflate(R.layout.update, null);
        final EditText viewName = (EditText) textEntryView.findViewById(R.id.viewName);
        final EditText viewPhone = (EditText)textEntryView.findViewById(R.id.viewPhone);
        AlertDialog.Builder ad1 = new AlertDialog.Builder(controller.this);
        ad1.setTitle("修改");
        ad1.setView(textEntryView);
        viewName.setText(name);
        viewPhone.setText(phone);
        current = i;
        ad1.setPositiveButton("是", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int i) {
                Toast.makeText(controller.this,current+"当前",Toast.LENGTH_LONG).show();
                Map<String, String> map1 = new HashMap<>();
                map1.put("name", viewName.getText()+"");
                map1.put("phone", viewPhone.getText()+"");
                data.set(current,map1);
                adapter.notifyDataSetChanged();
            }
        });
        ad1.setNegativeButton("否", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int i) {

            }
        });
        ad1.show();// 显示对话框
    }
}