Android 如何在ExpandableListView中为子项放置不同的布局?

Android 如何在ExpandableListView中为子项放置不同的布局?,android,android-layout,expandablelistview,expandablelistadapter,get-childitem,Android,Android Layout,Expandablelistview,Expandablelistadapter,Get Childitem,我开发了一个Android应用程序,所以我尝试使用ExpandableListView为每个孩子使用两种不同的布局。但我有个问题,似乎无法解决。我想问题是我没有找到合适的孩子。两个子项同时显示两个布局 这是我的类适配器 public class ExpandListAdapter extends BaseExpandableListAdapter { private Context context; private ArrayList<ExpandListGroup> groups

我开发了一个Android应用程序,所以我尝试使用
ExpandableListView
为每个孩子使用两种不同的布局。但我有个问题,似乎无法解决。我想问题是我没有找到合适的孩子。两个子项同时显示两个布局

这是我的类适配器

public class ExpandListAdapter extends BaseExpandableListAdapter {

private Context context;
private ArrayList<ExpandListGroup> groups;
public ExpandListAdapter(Context context, ArrayList<ExpandListGroup> groups) {
this.context = context;
this.groups = groups;
}

public void addItem(ExpandListChild item, ExpandListGroup group) {
if (!groups.contains(group)) {
groups.add(group);
}
int index = groups.indexOf(group);
ArrayList<ExpandListChild> ch = groups.get(index).getItems();
ch.add(item);
groups.get(index).setItems(ch);
}
public Object getChild(int groupPosition, int childPosition) {
//TODO Auto-generated method stub
ArrayList<ExpandListChild> chList = groups.get(groupPosition).getItems();
return chList.get(childPosition);
}
@Override
public int getChildTypeCount() {
return 2;
}

public long getChildId(int groupPosition, int childPosition) {
//TODO Auto-generated method stub
//return childPosition;
return (long)( groupPosition*50+childPosition );
}
@Override
public int getChildType(int groupPosition, int childPosition)
{
int result = 0;
if (childPosition == getChildrenCount(groupPosition)-1)
result = 1;

return result;
}


public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View view,
ViewGroup parent) {
TextView textView = null;
ExpandListChild child = (ExpandListChild) getChild(groupPosition, childPosition);
/*  if (view == null) {
if(childPosition == 0){
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
view = infalInflater.inflate(R.layout.expandlist_child_item, null);}
else if (childPosition == 1){
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
view = infalInflater.inflate(R.layout.child2, null);

}
}*/

if (view == null) {
int itemType = getChildType(groupPosition,childPosition);
LayoutInflater infalInflater = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
//view = infalInflater.inflate(R.layout.expandlist_child_item, null);

if(itemType == 0)
{


view = infalInflater.inflate(R.layout.expandlist_child_item, null);
textView = (TextView) view.findViewById(R.id.tvChild);
textView.setText("0");
//textView.setTag(child.getTag());
}
else
{ view = infalInflater.inflate(R.layout.child2, null);
textView  = (TextView) view.findViewById(R.id.tvChild1);
textView.setText("1");
textView.setTag(child.getTag());}
/*
switch (itemType) {
case 0:
{    view = infalInflater.inflate(R.layout.expandlist_child_item, null);
textView = (TextView) view.findViewById(R.id.tvChild);
textView.setText("0");
//textView.setTag(child.getTag());
break;}
case 1:
{   view = infalInflater.inflate(R.layout.child2, null);
textView  = (TextView) view.findViewById(R.id.tvChild1);
textView.setText("1");
textView.setTag(child.getTag());
break;}
}
*/

//textView.setPadding(30,20,30,20);


}

//TODO Auto-generated method stub
return view;
}

public int getChildrenCount(int groupPosition) {
//TODO Auto-generated method stub
ArrayList<ExpandListChild> chList = groups.get(groupPosition).getItems();

return chList.size();

}

public Object getGroup(int groupPosition) {
//TODO Auto-generated method stub
return groups.get(groupPosition);
}

public int getGroupCount() {
//TODO Auto-generated method stub
return groups.size();
}

public long getGroupId(int groupPosition) {
//TODO Auto-generated method stub
return groupPosition;
}

public View getGroupView(int groupPosition, boolean isLastChild, View view,
ViewGroup parent) {
ExpandListGroup group = (ExpandListGroup) getGroup(groupPosition);
if (view == null) {
LayoutInflater inf = (LayoutInflater) context.getSystemService(context.LAYOUT_INFLATER_SERVICE);
view = inf.inflate(R.layout.expandlist_group_item, null);
}
TextView tv = (TextView) view.findViewById(R.id.tvGroup);
tv.setText(group.getName());
//TODO Auto-generated method stub
return view;
}

public boolean hasStableIds() {
//TODO Auto-generated method stub
return true;
}

public boolean isChildSelectable(int arg0, int arg1) {
//TODO Auto-generated method stub
return true;
}
公共类ExpandListAdapter扩展了BaseExpandableListAdapter{
私人语境;
私有ArrayList组;
公共ExpandListAdapter(上下文、ArrayList组){
this.context=上下文;
这个组=组;
}
公共无效附加项(ExpandListChild项,ExpandListGroup组){
如果(!groups.contains(组)){
组。添加(组);
}
int index=组。indexOf(组);
ArrayList ch=groups.get(index.getItems();
总附录(项目);
groups.get(index).setItems(ch);
}
公共对象getChild(int groupPosition,int childPosition){
//TODO自动生成的方法存根
ArrayList chList=groups.get(groupPosition.getItems();
返回chList.get(childPosition);
}
@凌驾
public int getChildTypeCount(){
返回2;
}
公共长getChildId(int-groupPosition,int-childPosition){
//TODO自动生成的方法存根
//返回子位置;
返回(长)(groupPosition*50+childPosition);
}
@凌驾
public int getChildType(int groupPosition,int childPosition)
{
int结果=0;
if(childPosition==getChildrenCount(groupPosition)-1)
结果=1;
返回结果;
}
公共视图getChildView(int groupPosition、int childPosition、boolean isLastChild、View视图、,
视图组(父级){
TextView TextView=null;
ExpandListChild=(ExpandListChild)getChild(groupPosition,childPosition);
/*如果(视图==null){
if(childPosition==0){
LayoutInflater infalInflater=(LayoutInflater)context.getSystemService(context.LAYOUT\u INFLATER\u SERVICE);
视图=infalInflater.flate(R.layout.expandlist_child_item,null);}
else if(childPosition==1){
LayoutInflater infalInflater=(LayoutInflater)context.getSystemService(context.LAYOUT\u INFLATER\u SERVICE);
视图=充气器充气(R.layout.child2,空);
}
}*/
如果(视图==null){
int itemType=getChildType(groupPosition,childPosition);
LayoutInflater infalInflater=(LayoutInflater)context.getSystemService(context.LAYOUT\u INFLATER\u SERVICE);
//视图=infalInflater.充气(R.layout.expandlist\u child\u项,空);
如果(itemType==0)
{
视图=infalInflater.充气(R.layout.expandlist\u child\u项,空);
textView=(textView)view.findViewById(R.id.tvChild);
textView.setText(“0”);
//setTag(child.getTag());
}
其他的
{view=infalInflater.flate(R.layout.child2,null);
textView=(textView)view.findViewById(R.id.tvChild1);
textView.setText(“1”);
textView.setTag(child.getTag());}
/*
开关(项目类型){
案例0:
{view=infalInflater.flate(R.layout.expandlist\u child\u item,null);
textView=(textView)view.findViewById(R.id.tvChild);
textView.setText(“0”);
//setTag(child.getTag());
中断;}
案例1:
{view=infalInflater.flate(R.layout.child2,null);
textView=(textView)view.findViewById(R.id.tvChild1);
textView.setText(“1”);
setTag(child.getTag());
中断;}
}
*/
//设置填充(30,20,30,20);
}
//TODO自动生成的方法存根
返回视图;
}
公共整数getChildrenCount(整数组位置){
//TODO自动生成的方法存根
ArrayList chList=groups.get(groupPosition.getItems();
返回chList.size();
}
公共对象getGroup(int-groupPosition){
//TODO自动生成的方法存根
返回groups.get(groupPosition);
}
public int getGroupCount(){
//TODO自动生成的方法存根
返回组。size();
}
公共长getGroupId(int-groupPosition){
//TODO自动生成的方法存根
返回组位置;
}
public View getGroupView(int-groupPosition、boolean-isLastChild、View-View、,
视图组(父级){
ExpandListGroup=(ExpandListGroup)getGroup(groupPosition);
如果(视图==null){
LayoutInflater inf=(LayoutInflater)context.getSystemService(context.LAYOUT\u INFLATER\u SERVICE);
view=inf.inflate(R.layout.expandlist\u group\u项,空);
}
TextView tv=(TextView)view.findviewbyd(R.id.tvGroup);
tv.setText(group.getName());
//TODO自动生成的方法存根
返回视图;
}
公共布尔表ID(){
//TODO自动生成的方法存根
返回true;
}
公共布尔值isChildSelectable(int arg0,int arg1){
//TODO自动生成的方法存根
返回true;
}
child2.xml文件

<?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="match_parent"
    android:orientation="vertical" >




      <TextView
        android:id="@+id/tvChild1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textColor="@color/Black"
        android:textSize="17sp" >
  </TextView>



    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/b1" />

    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/checkboxh" />

    <RadioButton
        android:id="@+id/radioButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="RadioButton" />

</LinearLayout>
    <?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="55dip"
    android:background="@color/ExpandChildBackground"
    android:orientation="vertical" >


    <TextView
        android:id="@+id/tvChild"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textColor="@color/Black"
        android:textSize="17sp" >
   </TextView>
    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/b1" />
</LinearLayout>

expandablelist\u child\u item.xml

<?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="match_parent"
    android:orientation="vertical" >




      <TextView
        android:id="@+id/tvChild1"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textColor="@color/Black"
        android:textSize="17sp" >
  </TextView>



    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/b1" />

    <CheckBox
        android:id="@+id/checkBox1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/checkboxh" />

    <RadioButton
        android:id="@+id/radioButton1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="RadioButton" />

</LinearLayout>
    <?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="55dip"
    android:background="@color/ExpandChildBackground"
    android:orientation="vertical" >


    <TextView
        android:id="@+id/tvChild"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textColor="@color/Black"
        android:textSize="17sp" >
   </TextView>
    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/b1" />
</LinearLayout>

下面可以看到第一个和第二个孩子的跑步

int result = 0;
if (childPosition == getChildrenCount(groupPosition)-1)//logical fail ?
result = 1;

尝试返回“child_pos”

getChildrenCount每次都会给你相同的值。你有2个孩子-1=1

顺便说一句,检查这个初始化

ArrayList<ExpandListChild> chList = groups.get(groupPosition).getItems();
ArrayList chList=groups.get(groupPosition.getItems();
尝试返回“child_pos”

getChildrenCount每次都会给你相同的值。你有2个孩子-1=1

顺便说一句,检查这个初始化

ArrayList<ExpandListChild> chList = groups.get(groupPosition).getItems();
ArrayList chList=groups.get(groupPosition.getItems();

只有在视图为null的情况下才执行以下代码段,这是错误的,无论视图是否为null,都应执行该操作

if(itemType == 0)
{

view = infalInflater.inflate(R.layout.expandlist_child_item, null);
textView = (TextView) view.findViewById(R.id.tvChild);
textView.setText("0");
//textView.setTag(child.getTag());
}
else
{ view = infalInflater.inflate(R.layout.child2, null);
textView  = (TextView) view.findViewById(R.id.tvChild1);
textView.setText("1");
}

只有在视图为null的情况下才执行以下代码段,这是错误的,无论视图是否为null,都应该执行该操作

if(itemType == 0)
{

view = infalInflater.inflate(R.layout.expandlist_child_item, null);
textView = (TextView) view.findViewById(R.id.tvChild);
textView.setText("0");
//textView.setTag(child.getTag());
}
else
{ view = infalInflater.inflate(R.layout.child2, null);
textView  = (TextView) view.findViewById(R.id.tvChild1);
textView.setText("1");
}

然后你每次都在膨胀,你的表现会很差。然后你每次都在膨胀,你的表现会很差。我面临着类似的问题。这里运气好吗?我面临着类似的问题。这里运气好吗?