ExpandableListView

来源：互联网发布：统计学:从数据到结论编辑：程序博客网时间：2024/05/18 06:25

有这样的json数组[\"city\":\"changsha\",\"street\":\"no2\"},{\"city\":\"beijing\",\"street\":\"no5\"]，传到第二个activity中，将streety对应的数据显示到组上面，将street和city对应的数据显示在相应的组下面。效果图：

布局文件：

activity_q.xml

<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" > <Button       android:id="@+id/button"       android:layout_width="fill_parent"       android:layout_height="wrap_content"       android:text="查询"></Button></RelativeLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"><TextView android:layout_width="fill_parent"android:layout_height="wrap_content"  /><ExpandableListView android:id="@+id/list"android:layout_height="fill_parent" android:layout_width="fill_parent" android:drawSelectorOnTop="false" ></ExpandableListView></LinearLayout>

group.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout  xmlns:android="http://schemas.android.com/apk/res/android"  android:orientation = "horizontal"  android:layout_width="match_parent"  android:layout_height="match_parent"><TextView   android:layout_width = "wrap_content"   android:layout_height = "wrap_content"   android:id ="@+id/uselistGroup"   android:layout_marginLeft="30dp"   android:text="副编码" /><TextView   android:layout_width = "wrap_content"   android:layout_height = "wrap_content"    android:id ="@+id/uselistGroup1"
 /> </LinearLayout>
child.xml
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="match_parent"android:layout_height="match_parent"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal" android:layout_width="match_parent"android:layout_height="match_parent"><TextView    android:id="@+id/textview1"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="委托号"/>" <TextView      android:layout_height="wrap_content"android:layout_width="match_parent" android:id="@+id/childId"android:paddingLeft="80px" android:paddingTop="5px"android:paddingBottom="5px" android:text="TextView"></TextView> </LinearLayout> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="horizontal"    android:layout_width="match_parent"android:layout_height="match_parent"> <TextView    android:id="@+id/textview2"    android:layout_width="wrap_content"    android:layout_height="wrap_content"    android:text="协助单位"/>     <TextView android:layout_height="wrap_content"android:layout_width="match_parent" android:id="@+id/childId00"android:paddingLeft="80px" android:paddingTop="25px"android:paddingBottom="5px" android:text="TextView"></TextView>     </LinearLayout>    </LinearLayout>

QActivity.java

package com.example.m;import java.io.Serializable;import java.util.ArrayList;import java.util.List;import java.util.Map;import org.json.JSONArray;import org.json.JSONObject;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.util.Log;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class QActivity extends Activity {private Button button;private List<Map<String, Object>> list;String result="[{\"city\":\"changsha\",\"street\":\"no2\"},{\"city\":\"beijing\",\"street\":\"no5\"}]";//String result="[{\"child\":\"changsha\"},{\"child\":\"beijing\"}]";    @SuppressWarnings("unchecked")public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_q);        this.button=(Button)findViewById(R.id.button);        button.setOnClickListener(new buttonClick());        String result1="{\"address\":"+result+"}";        Log.d("result1",result1);        try{        JSONObject json=new JSONObject(result1);        JSONArray jsonlist=json.getJSONArray("address");           list = new ArrayList<Map<String, Object>>();         list=JsonHelper.toList(jsonlist);       Log.d("list***",list.toString());       }        catch(Exception e){                }    }    class buttonClick implements OnClickListener{@Overridepublic void onClick(View v) {// TODO Auto-generated method stubIntent intent=new Intent(QActivity.this,MainActivity.class); intent.putExtra("list", (Serializable)list); QActivity.this.startActivity(intent);                   Log.d("list",(Serializable)list+"");}        }}
MainActivity.java
package com.example.m;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.View;import android.view.View.OnClickListener;import android.widget.ExpandableListView;import android.widget.ImageView;import android.widget.LinearLayout;import android.widget.SimpleExpandableListAdapter;import android.widget.Toast;public class MainActivity extends Activity {ExpandableListView act;List<Map<String,String>> groups;List<List<Map<String,String>>> childs;SimpleExpandableListAdapter sla;/** Called when the activity is first created. */      @Override      public void onCreate(Bundle savedInstanceState) {          super.onCreate(savedInstanceState);          setContentView(R.layout.activity_main);                    act = (ExpandableListView)findViewById(R.id.list);        Intent intent=getIntent();        groups = (List<Map<String, String>>)intent.getSerializableExtra("list");//        Map<String,String> group1 = new HashMap<String,String>();  //        group1.put("group", "group1");  //        Map<String,String> group2 = new HashMap<String,String>();  //        group2.put("group", "group2");  //        groups.add(group1);  //        groups.add(group2);          List<List<Map<String,String>>> childs = new ArrayList<List<Map<String,String>>>();        for(int i=0;i<groups.size();i++){        List<Map<String,String>> child1 = new ArrayList<Map<String,String>>();        Map<String,String> childdata = new HashMap<String,String>();      childdata=groups.get(i);      child1.add(childdata);      Log.d("child1",child1.toString());          childs.add(child1);        }          // List<Map<String,String>> child1 = (List<Map<String, String>>)intent.getSerializableExtra("list"); //        Map<String,String> childData1 = new HashMap<String, String>();  //        childData1.put("child", "child1Data1");  //        Map<String,String> childData2 = new HashMap<String, String>();  //        childData2.put("child", "child1Data2");  //        child1.add(childData1);  //        child1.add(childData2);                  //  List<Map<String,String>> child2 = (List<Map<String, String>>)intent.getSerializableExtra("list"); //        Map<String,String> child2Data1 = new HashMap<String, String>();  //        child2Data1.put("child", "child2Data1");  //        Map<String,String> child2Data2 = new HashMap<String, String>();  //        child2Data2.put("child", "child2Data2");  //        child2.add(child2Data1);  //        child2.add(child2Data2);            //        childs = new ArrayList<List<Map<String,String>>>();  //        childs.add(child1);  //        childs.add(child2);          //生成对象          //1.context          //2.一级条目数据          //3.用来设置一级条目样式的布局文件          //4.指定一级条目数据的Key          //5.指定一级条目数据显示的group控件id          //6.指定二级条目数据          //7.用来设置二级条目样式的布局文件          //8.指定二级条目数据的key          //9.指定二级条目数据显示的控件的id          sla = new SimpleExpandableListAdapter                  (this, groups, R.layout.group, new String[]{"street"}, new int[]{R.id.uselistGroup1},                           childs, R.layout.child, new String[]{"city","street"}, new int[]{R.id.childId,R.id.childId00});          act.setAdapter(sla);          System.out.println("act.getChildCount():"+act.getCount());;        for (int i = 0; i < sla.getGroupCount(); i++) {        System.out.println("i:"+i);act.expandGroup(i);}        //设置为null则去掉箭头//        act.setGroupIndicator(null);        //子节点的监听事件        act.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {            public boolean onChildClick(ExpandableListView expandableListView, View view, int i, int i1, long l) {            System.out.println("i:"+i+"   i1:"+i1+"   l:"+l);                HashMap m = (HashMap) sla.getChild(i, i1);                System.out.println("m:"+m);                Toast.makeText(MainActivity.this, (CharSequence) m.get("street"), Toast.LENGTH_SHORT).show();                Intent intent=new Intent();                intent.setClass(MainActivity.this,BillActivity.class);                MainActivity.this.startActivity(intent);//                String albumid = (String) m.get(NAME);//                Toast.makeText(Main.this, albumid, Toast.LENGTH_SHORT).show();                return false;  //todo            }        });        //父节点的监听事件        act.setOnGroupClickListener(new ExpandableListView.OnGroupClickListener() {@Overridepublic boolean onGroupClick(ExpandableListView parent, View v,
int groupPosition, long id) {System.out.println("v:"+v);return false;}});    }  //    public void expandClick(View v){//    Map<String,String> group1 = new HashMap<String,String>();  //        group1.put("group", "group3");//        groups.add(group1);  //        List<Map<String,String>> child1 = new ArrayList<Map<String,String>>();  //        Map<String,String> childData1 = new HashMap<String, String>();  //        childData1.put("child", "child3Data1");  //        Map<String,String> childData2 = new HashMap<String, String>();  //        childData2.put("child", "child3Data2");  //        child1.add(childData1);  //        child1.add(childData2);  //        childs.add(child1);  //        //        Map<String,String> childData = new HashMap<String, String>();  //        childData.put("child", "child1Data22");  //        childs.get(1).add(childData);//        sla.notifyDataSetChanged();//        System.out.println("===:"+sla.getGroupCount());//    }}



下面这段也可以用来写
  
childs = new ArrayList<List<Map<String, Object>>>();        for(int i=0;i<groups.size();i++){       List<Map<String, Object>> child1 = new ArrayList<Map<String, Object>>();       Map<String, Object> childdata = new HashMap<String, Object>();      childdata=groups.get(i);      child1.add(childdata);      Log.d("child1",child1.toString());          childs.add(child1);

去掉默认的展开收缩箭头   act.setGroupIndicator(null);使用自己自定义的图片在drawable中加入两张图片在layout中新建一个xml文档expandlist.xml<?xml version="1.0" encoding="utf-8"?>   <selector xmlns:android="http://schemas.android.com/apk/res/android">       <item android:state_expanded="true" android:drawable="@drawable/ic_arrow_down" />       <item android:drawable="@drawable/ic_arrow_right" />   </selector>  在java中填写一句：act.setGroupIndicator(this.getResources().getDrawable(R.layout.expandlist));
	
					
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