多级可扩展列表视图
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【中文标题】多级可扩展列表视图【英文标题】：Multilevel Expandable Listview 【发布时间】：2019-05-21 17:04:02 【问题描述】：我正在尝试将值添加到父 groupPosition[0] 中。但它反映到父列表项的所有 groupPositions。请帮帮我。
public class MainActivity extends Activity
ExpandableListView explvlist;
ArrayList<String> StringArray = new ArrayList<String>();
ArrayList<String> StringArrayChild=new ArrayList<String>();
@Override
public void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ArrayValueAddFunction();
ArrayValueAddFunction_Level2();
explvlist = (ExpandableListView)findViewById(R.id.ParentLevel);
explvlist.setAdapter(new ParentLevel(StringArray));
private void ArrayValueAddFunction_Level2()
StringArrayChild.add("Level1 item1");
StringArrayChild.add("Level1 item2");
StringArrayChild.add("Level1 item3");
StringArrayChild.add("Level1 item4");
StringArrayChild.add("Level1 item5");
StringArrayChild.add("Level1 item6");
private void ArrayValueAddFunction()
StringArray.add("ONE");
StringArray.add("TWO");
StringArray.add("THREE");
StringArray.add("FOUR");
StringArray.add("FIVE");
StringArray.add("SIX");
public class ParentLevel extends BaseExpandableListAdapter
ArrayList<String> StringArray = new ArrayList<String>();
private Context context;
public ParentLevel(ArrayList<String> stringArray)
this.StringArray=stringArray;
@Override
public Object getChild(int arg0, int arg1)
return arg1;
@Override
public long getChildId(int groupPosition, int childPosition)
return childPosition;
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent)
CustExpListview SecondLevelexplv = new CustExpListview(MainActivity.this);
SecondLevelexplv.setAdapter(new SecondLevelAdapter());
SecondLevelexplv.setGroupIndicator(null);
return SecondLevelexplv;
@Override
public int getChildrenCount(int groupPosition)
return 3;
@Override
public Object getGroup(int groupPosition)
return groupPosition;
@Override
public int getGroupCount()
return StringArray.size();
@Override
public long getGroupId(int groupPosition)
return groupPosition;
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
TextView tv = new TextView(MainActivity.this);
if (groupPosition==0)
tv.append(StringArray.get(0));
else if (groupPosition==1)
tv.append(StringArray.get(1));
else if (groupPosition==2)
tv.append(StringArray.get(2));
else if (groupPosition==3)
tv.append(StringArray.get(3));
else if (groupPosition==4)
tv.append(StringArray.get(4));
else if (groupPosition==5)
tv.append(StringArray.get(5));
return tv;
@Override
public boolean hasStableIds()
return true;
@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
return true;
public class SecondLevelAdapter extends BaseExpandableListAdapter
@Override
public Object getChild(int groupPosition, int childPosition)
return childPosition;
@Override
public long getChildId(int groupPosition, int childPosition)
return childPosition;
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent)
TextView tv = new TextView(MainActivity.this);
tv.setText("child");
tv.setPadding(15, 5, 5, 5);
tv.setBackgroundColor(Color.GRAY);
tv.setLayoutParams(new ListView.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
return tv;
@Override
public int getChildrenCount(int groupPosition)
return 6;
@Override
public Object getGroup(int groupPosition)
return groupPosition;
@Override
public int getGroupCount()
return 1;
@Override
public long getGroupId(int groupPosition)
return groupPosition;
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent)
TextView tv = new TextView(MainActivity.this);
if (groupPosition==0)
tv.append(StringArrayChild.get(0));
else if (groupPosition==1)
tv.append(StringArrayChild.get(1));
else if (groupPosition==2)
tv.append(StringArrayChild.get(2));
else if (groupPosition==3)
tv.append(StringArrayChild.get(3));
else if (groupPosition==4)
tv.append(StringArrayChild.get(4));
else if (groupPosition==5)
tv.append(StringArrayChild.get(5));
tv.setPadding(12, 7, 7, 7);
tv.setBackgroundColor(Color.YELLOW);
return tv;
@Override
public boolean hasStableIds()
// TODO Auto-generated method stub
return true;
@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
// TODO Auto-generated method stub
return true;
CustExpList 视图
class CustExpListview extends ExpandableListView
int intGroupPosition, intChildPosition, intGroupid;
public CustExpListview(Context context)
super(context);
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
widthMeasureSpec = MeasureSpec.makeMeasureSpec(960, MeasureSpec.AT_MOST);
heightMeasureSpec = MeasureSpec.makeMeasureSpec(600, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
expandableListView 的布局设计
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_
android:layout_
tools:context=".MainActivity">
<ExpandableListView
android:layout_
android:id="@+id/ParentLevel"
android:groupIndicator="@null"
android:layout_>
</ExpandableListView>
</LinearLayout>
下面给出的图像是输出，所有项目都进入所有位置，但我需要放置位置[0]，但它反映到父列表的所有 groupPositins
【问题讨论】：
【参考方案1】：我认为问题发生在getGroupView。 groupPosition 总是返回 0。检查您的代码是否存在该问题。
对了，你可以用这个NLeveLExpandableListView。
【讨论】：
感谢兄弟，您的宝贵回复..我只需要 Root1 和 root2 的扩展子项，而对于剩余的根，我只需要子项..我热切地等待您的回复 您的代码完全错误，并且会产生一些不必要的循环。制作NLevelxpandable ListView 的方法有很多，例如查看this blog post 关于如何创建可扩展NLevel 列表。
@SadraIsapanahAmlashi 是否有任何关于折叠所有项目并将所有项目一起展开以获取您的 github 链接的提示？以上是关于多级可扩展列表视图的主要内容，如果未能解决你的问题，请参考以下文章
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