android的ExpandableListView

activity_main.xml

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<RelativeLayout xmlns:android= "http://schemas.android.com/apk/res/android"      xmlns:tools= "http://schemas.android.com/tools"      android:layout_width= "match_parent"      android:layout_height= "match_parent"      android:paddingBottom= "@dimen/activity_vertical_margin"      android:paddingLeft= "@dimen/activity_horizontal_margin"      android:paddingRight= "@dimen/activity_horizontal_margin"      android:paddingTop= "@dimen/activity_vertical_margin"      tools:context= "com.example.expandablelistview.MainActivity"  >        <ExpandableListView           android:id= "@+id/ExpandableListView1_1"          android:layout_width= "match_parent"          android:layout_height= "wrap_content"         android:layout_alignParentLeft= "true"         android:layout_alignParentTop= "true"         android:groupIndicator= "@null"                            >                </ExpandableListView>   </RelativeLayout> <!--  android:groupIndicator= "@null" 去掉自带的箭头图标 -->

group_item.xml

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<?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= "wrap_content"      android:orientation= "horizontal"  >            <ImageView          android:id= "@+id/imageViewgroup_1"           android:layout_width= "wrap_content"          android:layout_height= "wrap_content"          android:src= "@drawable/ic_launcher"          />            <TextView           android:id= "@+id/textViewgroup_1"          android:layout_width= "wrap_content"          android:layout_height= "wrap_content"                  /> </LinearLayout>

child_item.xml

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<?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= "wrap_content"      android:orientation= "horizontal"  >                   <ImageView          android:id= "@+id/imageViewchild_1"           android:layout_width= "wrap_content"          android:layout_height= "wrap_content"          android:src= "@drawable/ic_launcher"          android:padding= "10dp"          />            <TextView           android:id= "@+id/textViewchild_1"          android:layout_width= "wrap_content"          android:layout_height= "wrap_content"          android:text= "sdfds"          android:padding= "10dp"                  /> </LinearLayout>

MainActivity

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package  com.example.expandablelistview;   import  android.app.Activity; import  android.os.Bundle; import  android.view.Menu; import  android.view.MenuItem; import  android.view.View; import  android.view.ViewGroup; import  android.widget.BaseExpandableListAdapter; import  android.widget.ExpandableListView; import  android.widget.ImageView; import  android.widget.TextView;   public  class  MainActivity  extends  Activity {      private  ExpandableListView expandableListView;        @Override      protected  void  onCreate(Bundle savedInstanceState) {          super .onCreate(savedInstanceState);          setContentView(R.layout.activity_main);          expandableListView=(ExpandableListView) findViewById(R.id.ExpandableListView1_1);          expandableListView.setAdapter( new  MyExpandableListAdapter());      }        @Override      public  boolean  onCreateOptionsMenu(Menu menu) {          // Inflate the menu; this adds items to the action bar if it is present.          getMenuInflater().inflate(R.menu.main, menu);          return  true ;      }        @Override      public  boolean  onOptionsItemSelected(MenuItem item) {          // Handle action bar item clicks here. The action bar will          // automatically handle clicks on the Home/Up button, so long          // as you specify a parent activity in AndroidManifest.xml.          int  id = item.getItemId();          if  (id == R.id.action_settings) {              return  true ;          }          return  super .onOptionsItemSelected(item);      }            class  MyExpandableListAdapter  extends  BaseExpandableListAdapter{          private  String[] skills =  new  String[]{                  "WORD" ,  "EXCEL" ,  "EMAIL" ,  "PPT"          };          private  String[][] groups =  new  String[][]{                      { "文档编辑" ,  "文档排版" ,  "文档处理" ,  "文档打印" },                      { "表格编辑" ,  "表格排版" ,  "表格处理" ,  "表格打印" },                      { "收发邮件" ,  "管理邮箱" ,  "登录登出" ,  "注册绑定" },                      { "演示编辑" ,  "演示排版" ,  "演示处理" ,  "演示打印" },              };          @Override          public  int  getGroupCount() {              // TODO Auto-generated method stub              return  skills.length;          }          //二级列表的数量          @Override          public  int  getChildrenCount( int  groupPosition) {              // TODO Auto-generated method stub              return  groups[groupPosition].length;          }          //返回每一组的对象          @Override          public  Object getGroup( int  groupPosition) {              // TODO Auto-generated method stub              return  skills[groupPosition];          }          //返回每组中的列表项          @Override          public  Object getChild( int  groupPosition,  int  childPosition) {              // TODO Auto-generated method stub              return  groups[groupPosition][childPosition];          }            @Override          public  long  getGroupId( int  groupPosition) {              // TODO Auto-generated method stub              return  groupPosition;          }            @Override          public  long  getChildId( int  groupPosition,  int  childPosition) {              // TODO Auto-generated method stub              return  childPosition;          }            @Override          public  boolean  hasStableIds() {              // TODO Auto-generated method stub              return  true ;          }            @Override          public  View getGroupView( int  groupPosition,  boolean  isExpanded,                  View convertView, ViewGroup parent) {              // TODO Auto-generated method stub              if (convertView== null ){                  convertView=getLayoutInflater().inflate(R.layout.group_item,  null );                                }              ImageView imageView=(ImageView) convertView.findViewById(R.id.imageViewgroup_1);              TextView textView=(TextView) convertView.findViewById(R.id.textViewgroup_1);              imageView.setImageResource(R.drawable.ic_launcher);              textView.setText(skills[groupPosition]);              return  convertView;          }            @Override          public  View getChildView( int  groupPosition,  int  childPosition,                  boolean  isLastChild, View convertView, ViewGroup parent) {              // TODO Auto-generated method stub              if (convertView== null ){                  convertView=getLayoutInflater().inflate(R.layout.child_item,  null );                  ImageView imageView=(ImageView) convertView.findViewById(R.id.imageViewchild_1);                  TextView textView=(TextView) convertView.findViewById(R.id.textViewchild_1);                  imageView.setImageResource(R.drawable.ic_launcher);                  textView.setText(groups[groupPosition][childPosition]);              }              return  convertView;          }            @Override          public  boolean  isChildSelectable( int  groupPosition,  int  childPosition) {              // TODO Auto-generated method stub              return  true ;          }                } }

 本文转自 matengbing 51CTO博客，原文链接:http://blog.51cto.com/matengbing/1882709