Android仿QQ好友列表分组实现增删改及持久化

Android自带的控件ExpandableListView实现了分组列表功能，本案例在此基础上进行优化，为此控件添加增删改分组及子项的功能，以及列表数据的持久化。

Demo实现效果：

GroupListDemo具体实现：

①demo中将列表页面设计为Fragment页面，方便后期调用；在主界面MainActivity中动态添加GroupListFragment页面；

MainActivity.java

package com.eric.grouplistdemo; 

import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.os.Bundle;
import android.widget.RelativeLayout; 

public class MainActivity extends Activity {
 public static GroupListFragment fragment; 

 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main); 

  fragment = new GroupListFragment(); 

  getFragmentManager().beginTransaction()
  .replace(R.id.fragContainer, fragment).commit(); 

 }
}

动态添加GroupListFragment实例到界面的fragContainer布局中；将fragment声明为static用于在Adapter中组添加子项时进行调用。

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical" >
 <RelativeLayout
  android:id="@+id/fragContainer"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  >
 </RelativeLayout>
</LinearLayout>

②实现自定义适配器类MyAdapter，继承自BaseExpandableListAdapter；组项布局及子项布局；

list_item_parent.xml组项布局文件，展开图标及名称，增删图标；

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="50dp"
 android:background="#0099ff"
 android:orientation="horizontal">
 <ImageView
  android:id="@+id/image_parent"
  android:layout_width="50dp"
  android:layout_height="50dp"
  android:src="@drawable/image_parent1"/>
 <TextView
  android:id="@+id/text_parent"
  android:layout_width="wrap_content"
  android:layout_height="50dp"
  android:textColor="#FFF"
  android:textSize="20sp"
  android:text="parent1"
  android:layout_toRightOf="@id/image_parent"
  android:gravity="center"/>
 <ImageView
  android:id="@+id/image_delete"
  android:layout_width="40dp"
  android:layout_height="40dp"
  android:layout_centerVertical="true"
  android:layout_alignParentRight="true"
  android:src="@drawable/delete"/>
 <ImageView
  android:id="@+id/image_add"
  android:layout_width="40dp"
  android:layout_height="40dp"
  android:layout_centerVertical="true"
  android:layout_toLeftOf="@id/image_delete"
  android:src="@drawable/add"/>
</RelativeLayout>

list_item_child.xml子项布局文件，名称及删除图标；

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="40dp"
 >
 <TextView
  android:id="@+id/text_child"
  android:layout_width="wrap_content"
  android:layout_height="40dp"
  android:layout_margin="5dp"
  android:textColor="#0099ff"
  android:text="child"
  android:layout_centerInParent="true"
  android:gravity="center"/>
 <ImageView
  android:id="@+id/image_delete"
  android:layout_width="40dp"
  android:layout_height="40dp"
  android:layout_alignParentRight="true"
  android:layout_centerVertical="true"
  android:src="@drawable/delete"/>
</RelativeLayout>

MyAdapter.java自定义适配器

package com.eric.grouplistdemo; 

import java.util.List;
import java.util.Map; 

import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.TextView; 

public class MyAdapter extends BaseExpandableListAdapter{
 private List<String> parentList;
 private Map<String,List<String>> map;
 private Context context;
 private EditText edit_modify;
 private ModifyDialog dialog; 

 //构造函数
 public MyAdapter(Context context, List<String> parentList, Map<String,List<String>> map) {
  this.context = context;
  this.parentList = parentList;
  this.map = map;
 } 

 //获取分组数
 @Override
 public int getGroupCount() {
  return parentList.size();
 }
 //获取当前组的子项数
 @Override
 public int getChildrenCount(int groupPosition) {
  String groupName = parentList.get(groupPosition);
  int childCount = map.get(groupName).size();
  return childCount;
 }
 //获取当前组对象
 @Override
 public Object getGroup(int groupPosition) {
  String groupName = parentList.get(groupPosition);
  return groupName;
 }
 //获取当前子项对象
 @Override
 public Object getChild(int groupPosition, int childPosition) {
  String groupName = parentList.get(groupPosition);
  String chidlName = map.get(groupName).get(childPosition);
  return chidlName;
 }
 //获取组ID
 @Override
 public long getGroupId(int groupPosition) {
  return groupPosition;
 }
 //获取子项ID
 @Override
 public long getChildId(int groupPosition, int childPosition) {
  return childPosition;
 } 

 @Override
 public boolean hasStableIds() {
  return true;
 }
 //组视图初始化
 @Override
 public View getGroupView(int groupPosition, boolean isExpanded,
   View convertView, ViewGroup parent) {
  final int groupPos = groupPosition; 

  if(convertView == null){
   convertView = LayoutInflater.from(context).inflate(R.layout.list_item_parent, null);
  } 

  ImageView image = (ImageView) convertView.findViewById(R.id.image_parent);
  ImageView image_add = (ImageView) convertView.findViewById(R.id.image_add);
  ImageView image_delete = (ImageView) convertView.findViewById(R.id.image_delete); 

  if(isExpanded){
   image.setImageResource(R.drawable.image_parent2);
  }else{
   image.setImageResource(R.drawable.image_parent1);
  } 

  image_add.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    alertAddDialog(MainActivity.fragment.getActivity(), "新增子项", groupPos);
   }
  });
  image_delete.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    GroupListFragment.deleteGroup(groupPos);
   }
  }); 

  TextView parentText = (TextView) convertView.findViewById(R.id.text_parent);
  parentText.setText(parentList.get(groupPosition));
  return convertView;
 }
 //子项视图初始化
 @Override
 public View getChildView(int groupPosition, int childPosition,
   boolean isLastChild, View convertView, ViewGroup parent) {
  final int groupPos = groupPosition;
  final int childPos = childPosition; 

  if(convertView == null){
   convertView = LayoutInflater.from(context).inflate(R.layout.list_item_child, null);
  }
  TextView childText = (TextView) convertView.findViewById(R.id.text_child);
  ImageView image_delete = (ImageView) convertView.findViewById(R.id.image_delete);
  String parentName = parentList.get(groupPosition);
  String childName = map.get(parentName).get(childPosition);
  childText.setText(childName); 

  image_delete.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    GroupListFragment.deleteChild(groupPos, childPos);
   }
  });
  return convertView;
 } 

 @Override
 public boolean isChildSelectable(int groupPosition, int childPosition) {
  return true;
 } 

 //弹新增子项对话框
 public void alertAddDialog(Context context, String title, int currentGroup){
  final int group = currentGroup; 

  dialog = new ModifyDialog(context, title, null);
  edit_modify = dialog.getEditText();
  dialog.setOnClickCommitListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    GroupListFragment.addChild(group, edit_modify.getText().toString());
    dialog.dismiss();
   }
  });
  dialog.show();
 }
}

构造函数：将传入的parentList和map进行数据同步，parentList保存组数据，map保存对应组及其子项list数据；
获取分组数及子项数等很简单，就不介绍了，主要讲述一下，组视图初始化和子项视图初始化这两个函数；

组视图初始化getGroupView()：尽量复用convertView防止内存泄露，首先是进行判断，若convertView为空，则进行组视图初始化，加载list_item_parent子项布局；获取到相应的组布局控件：展开图标image、添加图标image_add、删除图标image_delete；通过传递过来的布尔类型参数isExpanded，进行判断给image赋值展开图标或合并图标；分别给添加图标和删除图标添加点击事件，分别调用GroupListFragment中的弹出添加窗口函数alertAddDialog()和删除组函数deleteGroup()；

子项视图初始化getChildView()：同样尽量复用convertView防止内存泄露，首先是进行判断，若convertView为空，则进行子项视图初始化，加载list_item_child子项布局；获取到相应的子布局控件：内容文本ChildText和删除图标Image_delete；从parentList和map中分别获取到，当前子项的组名parentName和子项名childName，赋值ChildText，删除图标添加点击事件，调用删除子项函数deleteChild()；

③实现自定义对话框类ModifyDialog，继承自Dialog类，对输入修改内容，或新增项内容进行过渡；

no_title_dialog.xml，在values目录下自定义Dialog的style类型xml，除去Dialog的标题栏；

<?xml version="1.0" encoding="utf-8"?>
<resources xmlns:android="http://schemas.android.com/apk/res/android">
 <style name="noTitleDialog" parent="android:style/Theme.Dialog">
  <item name="android:width">300dp</item>
  <item name="android:height">40dp</item>
  <item name="android:windowNoTitle">true</item>
 </style>
</resources>

dialog_modify.xml 自定义对话框的布局文件，标题文本，输入框，确定按钮；

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:orientation="vertical" >
 <TextView
  android:id="@+id/text_title"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:layout_gravity="center_horizontal"
  android:gravity="center"
  android:background="#0099ff"
  android:text="修改名称"
  android:textColor="#FFF"
  android:textSize="20sp"/>
 <EditText
  android:id="@+id/edit_modify"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:text="组名称"/>
 <Button
  android:id="@+id/btn_commit"
  android:layout_width="match_parent"
  android:layout_height="wrap_content"
  android:text="确定"
  android:textColor="#FFF"
  android:background="#0099ff"
  />
</LinearLayout> 

ModifyDialog.java

package com.eric.grouplistdemo; 

import android.app.Dialog;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class ModifyDialog extends Dialog{
 private TextView text_title;
 private EditText edit_modify;
 private Button btn_commit; 

 public ModifyDialog(Context context, String title, String name) {
  super(context, R.style.noTitleDialog); 

  View view = LayoutInflater.from(getContext())
    .inflate(R.layout.dialog_modify, null);
  text_title = (TextView) view.findViewById(R.id.text_title);
  edit_modify = (EditText)view.findViewById(R.id.edit_modify);
  btn_commit = (Button) view.findViewById(R.id.btn_commit);
  text_title.setText(title);
  edit_modify.setText(name); 

  super.setContentView(view);
 } 

 public EditText getEditText(){
  return edit_modify;
 } 

 public void setOnClickCommitListener(View.OnClickListener listener){
  btn_commit.setOnClickListener(listener);
 }
} 

ModifyDialog自定义构造函数中，通过super()加载刚刚自定义的no_title_dialog.xml，声明View加载layout布局dialog_modify.xml;并且获取布局中的相应控件，将构造函数中传来的字符串title和name，分别赋值到标题文本和输入框控件中；最后调用setContentView()初始化对话框视图；
添加一个返回输入框控件的函数getEditText()，用于获取输入框输入的内容；

还需要一个自定义的点击事件监听器，绑定在确定按钮上；

④准备工作都完成了，下面就实现GroupListFragment，包括数据的初始化及持久化保存，组项和子项的增删改操作，列表子项点击事件，列表组项和子项的长按事件；

fragment_group_list.xml 页面的布局文件ExpandableListView列表以及一个添加组图标；

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 >
 <ExpandableListView
  android:id="@+id/expandablelistview"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  android:groupIndicator="@null"
  >
 </ExpandableListView>
 <ImageView
  android:id="@+id/image_add"
  android:layout_width="40dp"
  android:layout_height="40dp"
  android:layout_centerHorizontal="true"
  android:layout_alignParentBottom="true"
  android:src="@drawable/add"/>
</RelativeLayout>

这里需要将ExpandableListView的groupIndicator属性设置为@null，不使用其自带的展开图标；

GroupListFragment.java 加载列表的页面

package com.eric.grouplistdemo; 

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map; 

import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject; 

import android.R.integer;
import android.app.Fragment;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.EditText;
import android.widget.ExpandableListView;
import android.widget.ImageView;
import android.widget.Toast; 

public class GroupListFragment extends Fragment{
 private View view;
 private ExpandableListView expandableListView;
 public static MyAdapter adapter;
 public static List<String> parentList;
 public static Map<String,List<String>> map;
 private ModifyDialog dialog;
 private EditText edit_modify;
 private ImageView image_add;
 private int currentGroup,currentChild;
 public static SharedPreferences sp;
 public static Editor editor;
 public static String dataMap,dataParentList; 

 @Override
 public View onCreateView(LayoutInflater inflater, ViewGroup container,
   Bundle savedInstanceState) { 

  view = inflater.inflate(R.layout.fragment_group_list, container, false);
  expandableListView = (ExpandableListView) view.findViewById(R.id.expandablelistview);
  image_add = (ImageView) view.findViewById(R.id.image_add);
  image_add.setOnClickListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    alertAddDialog(getActivity(), "新增组");
   }
  }); 

  initData(); 

  adapter = new MyAdapter(getActivity().getApplicationContext(), parentList, map);
  expandableListView.setAdapter(adapter); 

  //设置子项点击事件
  MyOnClickListener myListener = new MyOnClickListener();
  expandableListView.setOnChildClickListener(myListener); 

  //设置长按点击事件
  MyOnLongClickListener myLongListener = new MyOnLongClickListener();
  expandableListView.setOnItemLongClickListener(myLongListener); 

  return view;
 } 

 public void initData(){
  map = new HashMap<String, List<String>>();
  parentList = new ArrayList<String>(); 

  sp = getActivity().getApplicationContext().getSharedPreferences("spfile", getActivity().MODE_PRIVATE);
  dataMap = sp.getString("dataMap", null);
  dataParentList = sp.getString("dataParentList", null); 

  if(dataMap == null || dataParentList == null){
   parentList = new ArrayList<String>();
   parentList.add("客厅");
   parentList.add("厨房");
   parentList.add("卧室"); 

   List<String> list1 = new ArrayList<String>();
   list1.add("客厅空调");
   list1.add("客厅电视");
   list1.add("客厅电灯");
   map.put("客厅", list1); 

   List<String> list2 = new ArrayList<String>();
   list2.add("厨房油烟机");
   list2.add("厨房电灯");
   list2.add("厨房电器");
   map.put("厨房", list2); 

   List<String> list3 = new ArrayList<String>();
   list3.add("卧室空调");
   list3.add("卧室灯光");
   list3.add("卧室电视");
   map.put("卧室", list3);
  }else{
   try {
    //初始化parentList
    JSONArray jsonArray = new JSONArray(dataParentList);
    for (int i = 0; i < jsonArray.length(); i++) {
     parentList.add(jsonArray.get(i).toString());
    } 

    //初始化map
    JSONObject jsonObject = new JSONObject(dataMap);
    for (int i = 0; i < jsonObject.length(); i++) {
     String key = jsonObject.getString(parentList.get(i));
     JSONArray array = new JSONArray(key);
     List<String> list = new ArrayList<String>();
     for (int j = 0; j < array.length(); j++) {
      list.add(array.get(j).toString());
     }
     map.put(parentList.get(i), list);
    } 

    Log.d("eric", "①："+map+"②："+parentList);
   } catch (JSONException e) {
    e.printStackTrace();
    Log.e("eric","String转Map或List出错"+e);
   }
  }
  Log.e("eric", dataMap+"!&&!"+dataParentList);
  saveData();
 } 

 //自定义点击监听事件
 public class MyOnClickListener implements ExpandableListView.OnChildClickListener{
  @Override
  public boolean onChildClick(ExpandableListView parent, View v,
    int groupPosition, int childPosition, long id) {
   String str = "choose"+groupPosition+"-"+childPosition;
   Toast.makeText(getActivity(), str, Toast.LENGTH_SHORT).show();
   return false;
  }
 } 

 //自定义长按监听事件
 public class MyOnLongClickListener implements AdapterView.OnItemLongClickListener{
  @Override
  public boolean onItemLongClick(AdapterView<?> parent, View view,
    int position, long id) {
   //长按子项
   if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_CHILD){
    long packedPos = ((ExpandableListView) parent).getExpandableListPosition(position);
    int groupPosition = ExpandableListView.getPackedPositionGroup(packedPos);
    int childPosition = ExpandableListView.getPackedPositionChild(packedPos); 

    currentGroup = groupPosition;
    currentChild = childPosition; 

    String str = (String)adapter.getChild(groupPosition, childPosition);
    alertModifyDialog("修改此项名称",str);
    Toast.makeText(getActivity(),str,Toast.LENGTH_SHORT).show();
    return true;
   //长按组
   }else if(ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_GROUP){
    long packedPos = ((ExpandableListView) parent).getExpandableListPosition(position);
    int groupPosition = ExpandableListView.getPackedPositionGroup(packedPos);
    int childPosition = ExpandableListView.getPackedPositionChild(packedPos); 

    currentGroup = groupPosition;
    currentChild = childPosition; 

    String group = parentList.get(groupPosition);
    alertModifyDialog("修改组名称", group); 

    String str = (String)adapter.getGroup(groupPosition);
    Toast.makeText(getActivity(),str,Toast.LENGTH_SHORT).show();
   }
    return false;
   }
 } 

 //新增组
 public static void addGroup(String newGroupName){
  parentList.add(newGroupName);
  List<String> list = new ArrayList<String>();
  map.put(newGroupName, list);
  adapter.notifyDataSetChanged();
  saveData();
 } 

 //新增子项到指定组
 public static void addChild(int groupPosition, String newChildName){
  String groupName = parentList.get(groupPosition);
  List<String> list = map.get(groupName);
  list.add(newChildName);
  adapter.notifyDataSetChanged();
  saveData();
 } 

 //删除指定组
 public static void deleteGroup(int groupPos){
  String groupName = parentList.get(groupPos);
  map.remove(groupName);
  parentList.remove(groupPos);
  adapter.notifyDataSetChanged();
  saveData();
 }
 //删除指定子项
 public static void deleteChild(int groupPos, int childPos){
  String groupName = parentList.get(groupPos);
  List<String> list = map.get(groupName);
  list.remove(childPos);
  adapter.notifyDataSetChanged();
  saveData();
 } 

 //修改该项名称
 public void modifyName(int groupPosition, int childPosition, String modifyName){
  Toast.makeText(getActivity(), String.valueOf(groupPosition)+'-'+String.valueOf(childPosition), Toast.LENGTH_SHORT).show();
  if(childPosition<0){
   //修改组名称
   String groupName = parentList.get(groupPosition);
   if(!groupName.equals(modifyName)){
    map.put(modifyName, map.get(groupName));
    map.remove(groupName);
    parentList.set(groupPosition, modifyName);
   } 

  }else{
   //修改子项名称
   String group = parentList.get(groupPosition);
   List<String> list =map.get(group);
   list.set(childPosition, modifyName);
   map.put(group, list);
  }
  adapter.notifyDataSetChanged();
  saveData();
 } 

 //弹修改对话框
 public void alertModifyDialog(String title, String name){
  dialog = new ModifyDialog(getActivity(), title, name);
  edit_modify = dialog.getEditText();
  dialog.setOnClickCommitListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    modifyName(currentGroup, currentChild, edit_modify.getText().toString());
    dialog.dismiss();
   }
  });
  dialog.show();
 } 

 //弹新增组对话框
 public void alertAddDialog(Context context, String title){
  dialog = new ModifyDialog(context, title, null);
  edit_modify = dialog.getEditText();
  dialog.setOnClickCommitListener(new OnClickListener() {
   @Override
   public void onClick(View v) {
    addGroup(edit_modify.getText().toString());
    dialog.dismiss();
   }
  });
  dialog.show();
 } 

 //保存数据
 public static void saveData(){
  JSONObject jsonObject = new JSONObject(map);
  dataMap = jsonObject.toString();
  dataParentList = parentList.toString(); 

  editor = sp.edit();
  editor.putString("dataMap", dataMap);
  editor.putString("dataParentList", dataParentList);
  editor.commit();
 } 

}

内容有点多，一个个来：

初始化Fragment页面函数onCreateView():

首先，要进行layout布局fragment_group_list.xml加载，获取相应控件的实例，expandableListView列表控件以及添加组图标image_add，添加组图标添加点击事件；调用initData()方法进行组数据parentList和组对应子项map的初始化；然后，实例化adapter传入parentList和map数据到自定义适配器MyAdapter中，并将其绑定到expandableListView上；最后，给expandableListView添加自定义子项点击事件监听器，组项和子项长按事件监听器；

初始化数据函数initData():该函数通过ShareReference来保存数据；

首先，实例化parentList和map，从ShareReference中获取到保存的String类型的parentList和map实际数据，赋值到dataMap和dataParentList中，若当中数据不存在，默认返回null，第一次运行程序的时候肯定是没有数据的，故进行判断，若没获取到数据，那就给parentList和Map赋值“客厅”、“厨房”、“卧室”等一系列数据；如果有数据的话，那就得进行数据的转换，因为之前保存的String类型数据，parentList初始化：将dataParentList转换为JSONArray类型，通过循环将数据赋值到parentList中；同理，将dataMap转换为JSONObject类型，通过两层for循环将数据赋值到map中。

自定义点击子项监听其类MyOnClickListener：实现ExpandableListView.OnChildClickListener接口，这里就简单的进行Toast操作，读者可以修改为跳转等其他自定义功能；

自定义长按组项或子项监听器类MyOnLongClickListener：实现AdapterView.OnItemLongClickListener接口，通过调用ExpandableListView的getPackedPositionType()方法来判断此时长按的是组项还是子项；这里将长按组和子项分离出来，方便根据功能修改；无论是组项还是子项长按后，都调用alertModifyDialog()弹修改对话框，传入当前项的名称；
新增组addGroup函数：将传递过来的newGroupName，添加parentList中，且定义一个空的list，绑定newGroupName，将这对string和list，添加到map中；最后，调用adapter.notifyDataSetChanged()刷新列表，调用saveData()保存数据到ShareReference；

同理，新增子项到指定组addChild()，删除指定组deleteGroup()，删除指定子项deleteChild()，都是对parentList和map进行操作，最后刷新列表和保存数据；

修改该项名称modifyName():通过传递过来childPosition进行判断，当修改项为组项时，childPosition的值为-1，以此区分组项和子项；这里遇到一个问题，当组项提交的名称与原名称相同会报错，故添加一个判断，仅提交的名称不同时才进行修改操作；修改的具体实现还是对parentList和map的操作，以修改组项为例，同新增组，添加一个modifyName的组，其对应的List为原来组名对应的List数据，然后再将原来的groupName组及其对应的list删除，实现修改；最后同样要刷新列表和保存数据；

弹修改对话框alertModifyDialog()函数：首先对自定义的dialog进行实例化，初始化标题和输入框中的数据；调用getEditText()函数获取输入框实例，添加提交按钮点击事件，调用modifyName方法传入当前组和子项数据，以及输入框中提交的文本；
弹新增组对话框alertAddDialog()函数：同样，实例化dialog，获取输入框控件，点击事件中调用addGroup()方法添加数据；

保存数据saveData()函数：将parentList和map数据转化为String类型，分别赋值，保存至ShareReference的Editor中并提交；

以上就是本文的全部内容，希望对大家的学习有所帮助。