android-如何创建可打开的节列表视图
我想制作一个这样的分区列表视图,因为您可以看到每个分区都有一些子分区 当我点击每个部分时,它会打开并显示该部分的孩子。android-如何创建可打开的节列表视图,android,listview,Android,Listview,我想制作一个这样的分区列表视图,因为您可以看到每个分区都有一些子分区 当我点击每个部分时,它会打开并显示该部分的孩子。 如何制作这样的内容?使用可扩展的ListView而不是普通的ListView <ExpandableListView android:id="@+id/listSlidermenu" android:layout_width="275dp" android:layout_height="match
如何制作这样的内容?使用可扩展的ListView而不是普通的ListView
<ExpandableListView
android:id="@+id/listSlidermenu"
android:layout_width="275dp"
android:layout_height="match_parent"
android:layout_gravity="right"
android:layout_marginTop="2dp"
android:background="@color/background"
android:choiceMode="singleChoice"
android:groupIndicator="@null" />
适配器:
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<ExpandableListHeaderItem> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<ExpandableListHeaderItem, List<String>> _listDataChild;
public ExpandableListAdapter(Context context, List<ExpandableListHeaderItem> listDataHeader,
HashMap<ExpandableListHeaderItem, List<String>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public Object getChild(int groupPosition, int childPosititon) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.get(childPosititon);
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
final String childText = (String) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.lblListItem);
txtListChild.setText(childText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return this._listDataChild.get(this._listDataHeader.get(groupPosition))
.size();
}
@Override
public Object getGroup(int groupPosition) {
return this._listDataHeader.get(groupPosition);
}
@Override
public int getGroupCount() {
return this._listDataHeader.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
ExpandableListHeaderItem headerTitle = (ExpandableListHeaderItem) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.list_group, null);
}
TextView lblListHeader = (TextView) convertView
.findViewById(R.id.lblListHeader);
ImageView headerIcon = (ImageView) convertView
.findViewById(R.id.iconImageView);
headerIcon.setImageResource(headerTitle.getIcon());
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle.getItemName());
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
公共类ExpandableListAdapter扩展了BaseExpandableListAdapter{
私人语境(private Context)(私人语境);;
私有列表_listDataHeader;//头标题
//标题标题、子标题格式的子数据
私有HashMap_listDataChild;
公共ExpandableListAdapter(上下文、列表listDataHeader、,
HashMap listChildData){
这._context=context;
这。_listDataHeader=listDataHeader;
这。_listDataChild=listChildData;
}
@凌驾
公共对象getChild(int-groupPosition、int-ChildPosition){
返回此。_listDataChild.get(此。_listDataHeader.get(groupPosition))
.get(childpositionon);
}
@凌驾
公共长getChildId(int-groupPosition,int-childPosition){
返回子位置;
}
@凌驾
公共视图getChildView(int groupPosition,final int childPosition,
布尔值isLastChild、视图转换视图、视图组父级){
最终字符串childText=(字符串)getChild(groupPosition,childPosition);
if(convertView==null){
LayoutInflater infalInflater=(LayoutInflater)this.\u上下文
.getSystemService(上下文布局\充气机\服务);
convertView=infalInflater.充气(R.layout.list_项,空);
}
TextView txtListChild=(TextView)convertView
.findviewbyd(R.id.lblListItem);
setText(childText);
返回视图;
}
@凌驾
公共整数getChildrenCount(整数组位置){
返回此。_listDataChild.get(此。_listDataHeader.get(groupPosition))
.size();
}
@凌驾
公共对象getGroup(int-groupPosition){
返回此。\u listDataHeader.get(groupPosition);
}
@凌驾
public int getGroupCount(){
返回此值。_listDataHeader.size();
}
@凌驾
公共长getGroupId(int-groupPosition){
返回组位置;
}
@凌驾
公共视图getGroupView(int-groupPosition,布尔值isExpanded,
视图(视图、视图组父级){
ExpandableListHeaderItem头文件=(ExpandableListHeaderItem)getGroup(groupPosition);
if(convertView==null){
LayoutInflater infalInflater=(LayoutInflater)this.\u上下文
.getSystemService(上下文布局\充气机\服务);
convertView=infalInflater.充气(R.layout.list_组,空);
}
TextView lblistheader=(TextView)convertView
.findviewbyd(R.id.lblistheader);
ImageView headerIcon=(ImageView)convertView
.findviewbyd(R.id.iconImageView);
setImageResource(headerTitle.getIcon());
lblListHeader.setTypeface(null,Typeface.BOLD);
lblListHeader.setText(headerTitle.getItemName());
返回视图;
}
@凌驾
公共布尔表ID(){
返回false;
}
@凌驾
公共布尔值isChildSelectable(int-groupPosition,int-childPosition){
返回true;
}
}
最好的解决方案是使用ExpandableListView为此目的使用ExpandableListView