Android ExpandableListView控件中child嵌套ListView显示
话不多说，先上效果图
这里是父控件布局
这里是子控件布局，嵌套ListView一齐使用
首先，现在主布局文件中定义ExpandableListView控件
<ExpandableListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/sm_3_expand"
android:groupIndicator="@null"
/>
android:groupIndicator="@null"将默认的箭头去掉
自定义一个类继承BaseExpandableListAdapter
class MyAdatper extends BaseExpandableListAdapter{
@Override
public int getGroupCount() {
return myStations.getROWS_DETAIL().size();
}
@Override
public int getChildrenCount(int childPosition) {
return 1;
}
@Override
public Object getGroup(int groupPosition) {
return myStations.getROWS_DETAIL().get(i);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return 1;
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int i, int i1) {
return 1;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public View getGroupView(int position, boolean b, View context, ViewGroup viewGroup) {
return context;
}
@Override
public View getChildView(int position, int position2, boolean b, View context, ViewGroup viewGroup) {
return context;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return true;
}
}
自定义两个XML文件，用来加载getGroupView()布局和getChildView（）布局
用来加载父布局的XML （group_item）
<?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"
android:layout_width="match_parent"
android:layout_height="150dp">
<TextView
android:id="@+id/sm_3_id"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center"
android:background="@drawable/sm_7_ret"
android:text="TextView" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:id="@+id/sm_3_all_sation"
android:layout_weight="1"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/sm_3_all_price"
android:gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="asdasd"
android:gravity="center"
android:id="@+id/sm_3_0_time"
android:drawableLeft="@mipmap/liveing"
android:layout_weight="1"/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:text="asdasd"
android:id="@+id/sm_3_1_time"
android:drawableLeft="@mipmap/liveing"
android:gravity="center"
android:layout_weight="1"/>
</LinearLayout>
<ImageView
android:id="@+id/sm_7_img"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"
app:srcCompat="@mipmap/arrow_left" />
</LinearLayout>
用来加载子布局的XML （child_item）
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:orientation="vertical"
android:descendantFocusability="blocksDescendants"
android:layout_height="match_parent">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_weight="1"
android:textSize="30dp"
android:text="起点:" />
<com.lenovo.studentClient.activity.MyListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/sm_3_child_list"
android:layout_weight="2"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:layout_weight="1"
android:textSize="30dp"
android:text="终点" />
</LinearLayout>
注意，在子布局中，使用的是自定义的ListView,稍后会提到自定义ListView
加载子布局
@Override
public View getChildView(int position, int position2, boolean b, View context, ViewGroup viewGroup) {
if(context == null){
context = getLayoutInflater().inflate(R.layout.child_item,null);
}
return context;
}
自定义一个类继承ListView
public class MyListView extends ListView {
public Smart3_NextFull(Context context, AttributeSet attrs) {
super(context, attrs);
}
//动态长度
@Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, MeasureSpec.makeMeasureSpec(Integer.MAX_VALUE >> 2 , MeasureSpec.AT_MOST));
}
}
在子布局中（这里非常重要啊！！！小编被这个坑困了很久）
@Override
public View getChildView(int position, int position2, boolean b, View context, ViewGroup viewGroup) {
if(context == null){
context = getLayoutInflater().inflate(R.layout.child_item,null);
}
//加载自定义ListView,实体类里面数据可以先忽略，这里着重讲ListView显示不完全的问题
ListView sm_3_child_list = context.findViewById(R.id.sm_3_child_list);
sm_3_child_list.setAdapter(new ArrayAdapter(getApplicationContext() , android.R.layout.simple_list_item_1 , myStations.getROWS_DETAIL().get(position).getSites()));
return context;
}
在完成这一步之后，就可以在ExpandableListView控件中，完整的显示item中listView显示不完整的问题啦！！
关于JSON数据方面的获取，不是很重要，但是还是提一下吧
JSON数据如下
{“Line”:0,“UserName”:“user1”}
返回 JSON
{“RUSULT”:“S”,“ERRMSG”:“成功”,“ROWS_DETAIL”:[{“id”:1,“name”:"1 号线
",“time”:[{“site”:“迈皋桥
“,“starttime”:“05:42:00”,“endtime”:“23:19:00”},{“site”:“中国药科大学
“,“starttime”:“05:47:00”,“endtime”:“23:27:00”}],“map”:“img/001.png”,“sites”:[”
迈皋桥”,“红山动物园”,“南京站”,“新模范马路”,“玄武门”,“鼓楼”,“珠江路”,“新街口”,”
张府园”,“三山街”,“中华门”,“安德门”,“天隆寺”,“软件大道”,“花神庙”,“南京南站”,“双
龙大道”,“河定桥”,“胜太路”,“百家湖”,“小龙湾”,“竹山路”,“天印大道”,“龙眠大道”,“南
医大江苏经贸学院站”,“南京交院”,“中国药科大学”]},……]}
{“RESULT”:“F”,“ERRMSG”:“失败”}
根据JSON数据定义实体类
class MyStations {
List<Smart7.MyStations.Station2> ROWS_DETAIL;
public List<Smart7.MyStations.Station2> getROWS_DETAIL() {
return ROWS_DETAIL;
}
public void setROWS_DETAIL(List<Smart7.MyStations.Station2> ROWS_DETAIL) {
this.ROWS_DETAIL = ROWS_DETAIL;
}
class Station2 {
int id;
String name;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public List<Smart7.MyStations.Station2.Station3> getTime() {
return time;
}
public void setTime(List<Smart7.MyStations.Station2.Station3> time) {
this.time = time;
}
public String getMap() {
return map;
}
public void setMap(String map) {
this.map = map;
}
public List<String> getSites() {
return sites;
}
public void setSites(List<String> sites) {
this.sites = sites;
}
public List<String> getTransfersites() {
return transfersites;
}
public void setTransfersites(List<String> transfersites) {
this.transfersites = transfersites;
}
List<Smart7.MyStations.Station2.Station3> time;
class Station3{
public String getSite() {
return site;
}
public void setSite(String site) {
this.site = site;
}
public String getStarttime() {
return starttime;
}
public void setStarttime(String starttime) {
this.starttime = starttime;
}
public String getEndtime() {
return endtime;
}
public void setEndtime(String endtime) {
this.endtime = endtime;
}
String site;
String starttime;
String endtime;
}
String map;
List<String> sites;
List<String> transfersites;
}
}
数据使用Gson转换一下就行了 ,注意字段要对应，不然是null
public void onResponse(JSONObject jsonObject) {
//返回的是一个实体类
myStations = new Gson().fromJson(jsonObject.toString(), MyStations.class);
}
然后设置数据也就这些了，这里是全部适配器的代码啦
class MyAdatper extends BaseExpandableListAdapter{
@Override
public int getGroupCount() {
return myStations.getROWS_DETAIL().size();
}
@Override
public int getChildrenCount(int childPosition) {
return 1;
}
@Override
public Object getGroup(int groupPosition) {
return myStations.getROWS_DETAIL().get(i);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return 1;
}
@Override
public long getGroupId(int i) {
return i;
}
@Override
public long getChildId(int i, int i1) {
return 1;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public View getGroupView(int position, boolean b, View context, ViewGroup viewGroup) {
if(context == null){
context = getLayoutInflater().inflate(R.layout.group_item,null);
}
TextView sm_3_id = context.findViewById(R.id.sm_3_id);
TextView sm_3_all_sation = context.findViewById(R.id.sm_3_all_sation);
TextView sm_3_all_price = context.findViewById(R.id.sm_3_all_price);
TextView sm_3_0_time = context.findViewById(R.id.sm_3_0_time);
TextView sm_3_1_time = context.findViewById(R.id.sm_3_1_time);
sm_3_id.setText(myStations.getROWS_DETAIL().get(position).getId()+"号线");
sm_3_all_sation.setText(myStations.getROWS_DETAIL().get(position).getTime().get(0).getSite() +"---" +myStations.getROWS_DETAIL().get(position).getTime().get(1).getSite());
sm_3_all_price.setText("票价：￥"+(int) (Math.random()*20)+" 里程："+(int) (Math.random()*35)+"km");
sm_3_0_time.setText(myStations.getROWS_DETAIL().get(position).getTime().get(0).getStarttime()+"---" +myStations.getROWS_DETAIL().get(position).getTime().get(0).getEndtime());
sm_3_1_time.setText(myStations.getROWS_DETAIL().get(position).getTime().get(1).getStarttime()+"---" +myStations.getROWS_DETAIL().get(position).getTime().get(1).getEndtime());
return context;
}
@Override
public View getChildView(int position, int position2, boolean b, View context, ViewGroup viewGroup) {
if(context == null){
context = getLayoutInflater().inflate(R.layout.child_item, null);
}
ListView sm_3_child_list = context.findViewById(R.id.sm_3_child_list);
sm_3_child_list.setAdapter(new ArrayAdapter(getApplicationContext() , android.R.layout.simple_list_item_1 , myStations.getROWS_DETAIL().get(position).getSites()));
return context;
}
@Override
public boolean isChildSelectable(int i, int i1) {
return true;
}
}