Android 如何从ExpandableListView获取选定的子项?
我正在使用具有多个组项和子项的ExpandableListView。 我已经完成了根据需求填充数据和所有内容,但我不知道如何从列表中获取选定的子项 下面是ExpandableList适配器的代码和包含ExpandableListView的片段: 可扩展列表适配器Android 如何从ExpandableListView获取选定的子项?,android,expandablelistview,Android,Expandablelistview,我正在使用具有多个组项和子项的ExpandableListView。 我已经完成了根据需求填充数据和所有内容,但我不知道如何从列表中获取选定的子项 下面是ExpandableList适配器的代码和包含ExpandableListView的片段: 可扩展列表适配器 public class ExpListAdapter_EnqSecond extends BaseExpandableListAdapter { private Context _context; private List<St
public class ExpListAdapter_EnqSecond extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<String>> _listDataChild;
public ExpListAdapter_EnqSecond(Context context, List<String> listDataHeader,
HashMap<String, 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.sample_type_item, null);
}
TextView txtListChild = (TextView) convertView
.findViewById(R.id.rowTextView);
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) {
String headerTitle = (String) 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);
lblListHeader.setTypeface(null, Typeface.BOLD);
lblListHeader.setText(headerTitle);
return convertView;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
公共类ExpListAdapter_EnqSecond扩展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;
public ExpListAdapter_EnqSecond(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.sample\u type\u项目,空);
}
TextView txtListChild=(TextView)convertView
.findViewById(R.id.rowTextView);
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){
字符串头文件=(字符串)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);
lblListHeader.setTypeface(null,Typeface.BOLD);
lblListHeader.setText(标题);
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;
}
}
片段类
public class AddEnqSecond extends Fragment{
ArrayList<String> SampleList, WaterPurpostList, ConcretePurposeList, CementPurposeList, SoilPurposeList;
ExpListAdapter_EnqSecond listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
View v;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
v = inflater.inflate(R.layout.add_enq_second, container, false);
init();
return v;
}
private void init() {
SampleList = new ArrayList<>();
SampleList = getArguments().getStringArrayList("list_sample");
WaterPurpostList = new ArrayList<>();
WaterPurpostList.add("Drinking Water");
WaterPurpostList.add("Construction Water");
ConcretePurposeList = new ArrayList<>();
ConcretePurposeList.add("All Tests");
ConcretePurposeList.add("Chemical Analysis");
ConcretePurposeList.add("Cubes");
ConcretePurposeList.add("Cylinder");
CementPurposeList = new ArrayList<>();
CementPurposeList.add("All Tests");
CementPurposeList.add("Cement-Physical");
CementPurposeList.add("Chemical Analysis");
SoilPurposeList = new ArrayList<>();
SoilPurposeList.add("All Tests");
SoilPurposeList.add("Chemical Analysis");
SoilPurposeList.add("Field Tests");
SoilPurposeList.add("Physical Tests");
expListView = (ExpandableListView) v.findViewById(R.id.lvExp2);
expListView.setOnChildClickListener(new ExpandableListView.OnChildClickListener() {
@Override
public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) {
Log.d("AddEnqSecond", "onChildClick: " +childPosition );
CheckBox cb = (CheckBox) v.findViewById(R.id.CheckBox01);
if (cb != null) cb.toggle();
Log.e("Checkbox text", cb.getText().toString());
return false;
}
});
// preparing list data
prepareListData();
listAdapter = new ExpListAdapter_EnqSecond(getActivity(), listDataHeader, listDataChild);
// setting list adapter
expListView.setAdapter(listAdapter);
}
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding Headers Data
for (int i = 0; i < SampleList.size(); i++) {
listDataHeader.add(SampleList.get(i).toString());
}
// Adding items to subElements of HeaderItems
for (int j = 0; j < listDataHeader.size(); j++) {
if (listDataHeader.get(j).equals("Water")) {
listDataChild.put(listDataHeader.get(j), WaterPurpostList);
} else if (listDataHeader.get(j).equals("Soil")) {
listDataChild.put(listDataHeader.get(j), SoilPurposeList);
} else if (listDataHeader.get(j).equals("Cement")) {
listDataChild.put(listDataHeader.get(j), CementPurposeList);
} else if (listDataHeader.get(j).equals("Concrete")) {
listDataChild.put(listDataHeader.get(j), ConcretePurposeList);
}
}
}
}
公共类AddEnqSecond扩展片段{
ArrayList样本列表、WaterPurpostList、ConcretePurpostList、CementPurposeList、SoilPurposeList;
外植体适配器;
ExpandableListView解释视图;
列表列表数据头;
HashMapListDataChild;
观点五;
@可空
@凌驾
创建视图时的公共视图(LayoutFlater充气机、@Nullable ViewGroup容器、@Nullable Bundle savedInstanceState){
v=充气机。充气(R.layout.add_enq_second,容器,假);
init();
返回v;
}
私有void init(){
SampleList=newarraylist();
SampleList=getArguments().getStringArrayList(“列表样本”);
WaterPurpostList=newarraylist();
WaterPurpostList.添加(“饮用水”);
水资源清单。添加(“施工用水”);
ConcretePurposeList=新的ArrayList();
具体目的列表。添加(“所有测试”);
具体目的清单。添加(“化学分析”);
具体目的列表。添加(“立方体”);
具体目的列表。添加(“气缸”);
concentPurposeList=新的ArrayList();
清单。添加(“所有测试”);
水泥清单。添加(“水泥物理”);
添加(“化学分析”);
SoilPurposeList=新阵列列表();
SoilPurposeList.添加(“所有测试”);
SoilPurposeList.添加(“化学分析”);
SoilPurposeList.添加(“现场试验”);
SoilPurposeList.添加(“物理测试”);
expListView=(ExpandableListView)v.findViewById(R.id.lvExp2);
expListView.setOnChildClickListener(新的ExpandableListView.OnChildClickListener(){
@凌驾
公共布尔onChildClick(ExpandableListView父视图、视图v、int-groupPosition、int-childPosition、长id){
Log.d(“AddEnqSecond”,“onChildClick:+childPosition”);
复选框cb=(复选框)v.findViewById(R.id.CheckBox01);
如果(cb!=null)cb.toggle();
Log.e(“复选框文本”,cb.getText().toString());
返回false;
}
});
//准备列表数据
prepareListData();
listAdapter=new ExpListAdapter_EnqSecond(getActivity(),listDataHeader,listDataChild);
//设置列表适配器
expListView.setAdapter(listAdapter);
}
私有void prepareListData(){
listDataHeader=新的ArrayList();
listDataChild=newHashMap();
//添加标题数据
对于(int i=0;i