Android 开发 listview QQ多级列表的实现 Android, import, 开发

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关键词： android

[代码] 主类 package com.android.qu.antking.list; import android.app.Activity; import android.content.Context; import android.os.Bundle; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseExpandableListAdapter; import android.widget.ExpandableListView; import android.widget.ImageView; import android.widget.TextView; import java.util.*; public class MyMain extends Activity {   //author antkingwei private List<Map<String,Object>> parentList=new ArrayList<Map<String,Object>>(); private List<List<Map<String,Object>>> childList = new ArrayList<List<Map<String,Object>>>(); ExpendAdapter adapter; ExpandableListView exList; private String[] listName = new String[]{ "我的好友","高中同学","大学同学","移动开发","网站建设","普通朋友" }; private String[] childTitle= new String[]{ "丫宁","王八锐","小鸟","连超","董二丫" }; private String[] childMood= new String[]{ "我喜欢王锐","我就是王八","我也喜欢王锐","上边一群傻帽","同楼上" }; private int[] headImage=new int[]{ R.drawable.ning,R.drawable.rui,R.drawable.niao,R.drawable.lianchao,R.drawable.xiaoxiao };     public void onCreate(Bundle savedInstanceState) {         super.onCreate(savedInstanceState);         setContentView(R.layout.main);         exList = (ExpandableListView) this.findViewById(R.id.expandableListView1);         parentList =getParentList();         childList = getChildList();        adapter = new ExpendAdapter(MyMain.this, parentList, childList);         exList.setAdapter(adapter);         exList.setGroupIndicator(null);         exList.setDivider(null);     }     public List<Map<String,Object>> getParentList(){     List<Map<String,Object>> list = new ArrayList<Map<String,Object>>();     for(int i=0;i<listName.length;i++){     Map<String, Object> curGroupMap = new HashMap<String, Object>();              list.add(curGroupMap);              curGroupMap.put("List", listName);     }     return list;     }     public List<List<Map<String,Object>>> getChildList(){     List<List<Map<String,Object>>> list1 = new ArrayList<List<Map<String,Object>>>();     for (int i = 0; i < listName.length; i++) {              List<Map<String, Object>> children = new ArrayList<Map<String, Object>>();              for (int j = 0; j <childTitle.length; j++) {                  Map<String, Object> curChildMap = new HashMap<String, Object>();                  children.add(curChildMap);                  curChildMap.put("Title", childTitle[j]);                  curChildMap.put("Mood", childMood[j]);                  curChildMap.put("Head", headImage[j]);              }              list1.add(children);     }     return list1;     } } 复制代码 [代码] 自定义的Adapter package com.android.qu.antking.list; import android.content.Context; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.BaseExpandableListAdapter; import android.widget.ImageView; import android.widget.TextView; import android.widget.Toast; import java.util.*; public class ExpendAdapter extends BaseExpandableListAdapter {       private LayoutInflater layoutInflater;       private Context mContext;       private List<Map<String,Object>> parentList = new ArrayList<Map<String,Object>>();       private List<List<Map<String,Object>>> childList = new ArrayList<List<Map<String,Object>>>(); public ExpendAdapter(Context mContext,List<Map<String,Object>> parentList,List<List<Map<String,Object>>> childList){ this.mContext = mContext; this.parentList = parentList; this.childList = childList; layoutInflater = LayoutInflater.from(mContext); } public Object getChild(int groupPosition, int childPosition) { // TODO Auto-generated method stub return childList.get(groupPosition).get(childPosition).get("Title").toString(); } @Override public long getChildId(int groupPosition, int childPosition) { return childPosition; } @Override public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { if(convertView ==null){ convertView = layoutInflater.inflate(R.layout.childlist, null); } final ImageView head=(ImageView)convertView.findViewById(R.id.headImage);   head.setImageResource(Integer.valueOf(childList.get(groupPosition).get(childPosition).get("Head").toString())); final TextView title=(TextView)convertView.findViewById(R.id.title); title.setText(childList.get(groupPosition).get(childPosition).get("Title").toString());    final TextView mood =(TextView)convertView.findViewById(R.id.mood);      mood.setText(childList.get(groupPosition).get(childPosition).get("Mood").toString()); return convertView; } @Override public int getChildrenCount(int groupPosition) { // TODO Auto-generated method stub return childList.get(groupPosition).size(); } @Override public Object getGroup(int groupPosition) { // TODO Auto-generated method stub return parentList.get(groupPosition).get("List").toString(); } @Override public int getGroupCount() { // TODO Auto-generated method stub return parentList.size(); } @Override public long getGroupId(int groupPosition) { // TODO Auto-generated method stub return groupPosition; } @Override public View getGroupView(int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { if(convertView==null){ convertView=layoutInflater.inflate(R.layout.parentlist, null); } final TextView list = (TextView) convertView.findViewById(R.id.list); list.setText(parentList.get(groupPosition).get("List").toString()); return convertView; } @Override public boolean hasStableIds() { // TODO Auto-generated method stub Toast.makeText(mContext,"nihao",Toast.LENGTH_SHORT).show(); return true; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { Toast.makeText(mContext, "这是第"+groupPosition+"组，第"+childPosition+"个", Toast.LENGTH_SHORT).show(); return true; } } 复制代码 [代码] 主布局文件 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"     androidrientation="vertical"     android:layout_width="fill_parent"     android:layout_height="fill_parent"     android:background="@drawable/back1"     > <ExpandableListView android:layout_height="wrap_content" android:id="@+id/expandableListView1" android:layout_width="fill_parent"></ExpandableListView> </LinearLayout> 复制代码 [代码] parentList布局 <?xml version="1.0" encoding="utf-8"?> <LinearLayout   xmlns:android="http://schemas.android.com/apk/res/android"   android:layout_width="fill_parent"   androidrientation="horizontal"   android:id="@+id/parentList"   android:layout_height="wrap_content">   <ImageView     android:layout_width="60px"     android:layout_height="60px"     android:src="@drawable/user_group"    />    <TextView     android:id="@+id/list"     android:textSize="20px"     android:layout_width="wrap_content"     android:layout_height="wrap_content"/> </LinearLayout> 复制代码 [代码] childList布局 <?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="wrap_content"   android:id="@+id/childList"   androidrientation="horizontal"   >   <ImageView     android:paddingLeft="20px"     android:id="@+id/headImage"     android:src="@drawable/icon"     android:layout_width="50px"     android:layout_height="50px"     android:layout_marginBottom="5px"     android:layout_marginRight="10px"/>   <LinearLayout    androidrientation="vertical"    android:layout_width="fill_parent"    android:layout_height="wrap_content">    <TextView android:id="@+id/title"    android:textSize="18px"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    />    <TextView android:id="@+id/mood"    android:textSize="16px"    android:layout_width="wrap_content"    android:layout_height="wrap_content"/>    </LinearLayout>    </LinearLayout> 复制代码 希望本文对广大安卓开发者有所帮助，感谢阅读本文。更多安卓技术问题欢迎加群探讨：314230976，验证码:eec,不写验证不予通过哟~