Android：如何遍历可扩展列表的视图
我有一个可扩展列表，在子元素中我添加了一些EditText、复选框和微调器。已正确创建和显示这些文件。选中复选框后，将显示其他EditText和微调器，然后用户可以添加文本并从微调器中选择值。我想为每个子元素检索这些附加视图（edittext、微调器、复选框）的值。单击保存，我想遍历所有元素并检索这些editText、微调器和复选框中的值。目前我正在使用下面的代码，但在单击save之后，它总是返回与最后一个子元素关联的值。如果这个问题需要更多信息，请告诉我。 主要活动-Android：如何遍历可扩展列表的视图,android,expandablelistview,expandablelistadapter,Android,Expandablelistview,Expandablelistadapter,我有一个可扩展列表，在子元素中我添加了一些EditText、复选框和微调器。已正确创建和显示这些文件。选中复选框后，将显示其他EditText和微调器，然后用户可以添加文本并从微调器中选择值。我想为每个子元素检索这些附加视图（edittext、微调器、复选框）的值。单击保存，我想遍历所有元素并检索这些editText、微调器和复选框中的值。目前我正在使用下面的代码，但在单击save之后，它总是返回与最后一个子元素关联的值。如果这个问题需要更多信息，请告诉我。 主要活动- public clas
public class MainActivity extends AppCompatActivity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<String>> listDataChild;
Button save;
Button cancel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
save = (Button) findViewById(R.id.save);
// get the listview
expListView = (ExpandableListView) findViewById(R.id.lvExp);
// preparing list data
prepareListData();
listAdapter = new ExpandableListAdapter(getApplicationContext(), listDataHeader, listDataChild);
// setting list adapter
expListView.setAdapter(listAdapter);
expListView.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
save.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
System.out.println("Save clicked");
for(int i = 0; i < listAdapter.getGroupCount();i++) {
for (int k = 0; k < listAdapter.getChildrenCount(i); k++) {
String temp = listAdapter.recollect(i,k);
System.out.println("For i="+i+" and k="+k+" string value is="+temp);
}
}
}
});
}
/*
* Preparing the list data
*/
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<String>>();
// Adding child data
listDataHeader.add("Nokia");
listDataHeader.add("Apple");
listDataHeader.add("Samsung");
// Adding child data
List<String> nokia = new ArrayList<String>();
nokia.add("Nokia1");
nokia.add("Nokia2");
List<String> apple = new ArrayList<String>();
apple.add("Apple1");
apple.add("Apple2");
List<String> samsung = new ArrayList<String>();
samsung.add("Samsung1");
samsung.add("Samsung2");
listDataChild.put(listDataHeader.get(0), nokia); // Header, Child data
listDataChild.put(listDataHeader.get(1), apple);
listDataChild.put(listDataHeader.get(2), samsung);
}
}
System.out: For i=0 and k=0 string value is=Nokia;Nokia1;123;A;Note for Note for Nokia1
System.out: For i=0 and k=1 string value is=Nokia;Nokia2;;;
System.out: For i=1 and k=0 string value is=Apple;Apple1;;;
System.out: For i=1 and k=1 string value is=Apple;Apple2;;;
System.out: For i=2 and k=0 string value is=Samsung;Samsung1;;;
System.out: For i=2 and k=1 string value is=Samsung;Samsung2;2;C;Note for Samsung2_
您使用的是相同的编辑文本，因此它只会给您最后一个值，而不是在编辑文本上添加一个textchange侦听器，并在onTextChanged（）方法中将该编辑文本的值添加到如下列表中： 还添加一个带有位置的标记，并使用标记从列表中检索值 addTextChangedListener（新的GenericTextWatcher（myEditText1）） myEditText1.setTag（“theFirstEditTextAtPos:+位置”） 试试这个
save.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
System.out.println("Save clicked");
for(int i = 0; i < listAdapter.getGroupCount();i++) {
String group = listAdapter.getGroup(i).toString();
for (int k = 0; k < listAdapter.getChildrenCount(i); k++) {
String child = listAdapter.getChild(i, k).toString();;
System.out.println("For i="+i+" and k="+k+" string value is="+child);
}
}
}
});
ViewHolderpublic class ExpandableListAdapter 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;
// private final HashMap<String, String, String> mCheckedItems;
String cat, item, quty, units, notes;
ArrayList<String> ss = new ArrayList<>();
public ExpandableListAdapter(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 ( final int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent){
final String childText = (String) getChild(groupPosition, childPosition);
final ViewHolder holder;
View row = convertView;
if (row == null) {
LayoutInflater inflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.mm = (LinearLayout) row.findViewById(R.id.entries);
holder.qty = (EditText) row.findViewById(R.id.qty1);
holder.note = (EditText) row.findViewById(R.id.note);
holder.unit = (Spinner) row.findViewById(R.id.unit);
holder.cb = (CheckBox) row.findViewById(R.id.cb);
holder.txtListChild = (TextView) row
.findViewById(R.id.lblListItem);
row.setTag(holder);
}
else {
// view already exists, get the holder instance from the view
holder = (ViewHolder) row.getTag();
}
final int grp = groupPosition;
holder.cb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final CheckBox cb = (CheckBox) v;
if (cb.isChecked()) {
holder.mm.setVisibility(View.VISIBLE);
} else {
holder.mm.setVisibility(View.GONE);
}
System.out.println(ss);
}
});
holder.txtListChild.setText(childText);
return row;
}
/* public String recollect(int grp, int ch) {
cat = getGroup(grp).toString();
item = getChild(grp, ch).toString();
quty = qty.getText().toString();
units = unit.getSelectedItem().toString();
notes = note.getText().toString();
System.out.println("cat=" + cat + "; item=" + item + "; qty=" + quty + "; unit=" + units + "; note=" + notes);
return cat + ";" + item + ";" + quty + ";" + units + ";" + notes + "_";
}*/
@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;
}
// somewhere else in your class definition
static class ViewHolder {
EditText qty;
EditText note;
Spinner unit;
LinearLayout mm;
CheckBox cb;
TextView txtListChild;
}
}
添加新类
CustomChildspackage stack.buy.com.stackdemos;
/**
* Created by Desktop - Ganesh on 10/14/2016.
*/
public class CustomChilds {
String Quntity;
String Unit;
String Note;
String GroupName;
public String getQuntity() {
return Quntity;
}
public void setQuntity(String quntity) {
Quntity = quntity;
}
public String getUnit() {
return Unit;
}
public void setUnit(String unit) {
Unit = unit;
}
public String getNote() {
return Note;
}
public void setNote(String note) {
Note = note;
}
public String getGroupName() {
return GroupName;
}
public void setGroupName(String groupName) {
GroupName = groupName;
}
public CustomChilds(String quntity, String unit, String note, String groupName) {
Quntity = quntity;
Unit = unit;
Note = note;
GroupName = groupName;
}
public CustomChilds() {
}
}
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<CustomChilds>> _listDataChild;
// private final HashMap<String, String, String> mCheckedItems;
String cat, item, quty, units, notes;
ArrayList<String> ss = new ArrayList<>();
public ExpandableListAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<CustomChilds>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public CustomChilds 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 ( final int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent){
final CustomChilds childText =getChild(groupPosition, childPosition);
final ViewHolder holder;
View row = convertView;
if (row == null) {
LayoutInflater inflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.mm = (LinearLayout) row.findViewById(R.id.entries);
holder.qty = (EditText) row.findViewById(R.id.qty1);
holder.note = (EditText) row.findViewById(R.id.note);
holder.unit = (Spinner) row.findViewById(R.id.unit);
holder.cb = (CheckBox) row.findViewById(R.id.cb);
holder.txtListChild = (TextView) row
.findViewById(R.id.lblListItem);
row.setTag(holder);
}
else {
// view already exists, get the holder instance from the view
holder = (ViewHolder) row.getTag();
}
List<CustomChilds> temp = _listDataChild.get(this._listDataHeader.get(groupPosition));
temp.set(childPosition,new CustomChilds(holder.qty.getText().toString(),holder.unit.getSelectedItem().toString(),holder.note.getText().toString(),childText.GroupName));
final int grp = groupPosition;
holder.cb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final CheckBox cb = (CheckBox) v;
if (cb.isChecked()) {
holder.mm.setVisibility(View.VISIBLE);
} else {
holder.mm.setVisibility(View.GONE);
}
System.out.println(ss);
}
});
holder.txtListChild.setText(childText.getGroupName());
return row;
}
@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;
}
// somewhere else in your class definition
static class ViewHolder {
EditText qty;
EditText note;
Spinner unit;
LinearLayout mm;
CheckBox cb;
TextView txtListChild;
}
}
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；
//私有最终HashMap mCheckedItems；
字符串类别、项目、数量、单位、注释；
ArrayList ss=新的ArrayList（）；
公共ExpandableListAdapter（上下文、列表listDataHeader、，
HashMap listChildData）{
这._context=context；
这。_listDataHeader=listDataHeader；
这。_listDataChild=listChildData；
}
@凌驾
public CustomChilds getChild（int-groupPosition、int-childpositionon）{
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（最终int groupPosition，最终int childPosition，
布尔值isLastChild、视图转换视图、视图组父级）{
最终CustomChilds childText=getChild（groupPosition，childPosition）；
最终持票人；
视图行=转换视图；
if（行==null）{
LayoutInflater充气器=（LayoutInflater）此。\u上下文
.getSystemService（上下文布局\充气机\服务）；
行=充气机。充气（R.layout.list\u项，父项，false）；
holder=新的ViewHolder（）；
holder.mm=（LINEARLLAYOUT）row.findViewById（R.id.entries）；
holder.qty=（EditText）行findViewById（R.id.qty1）；
holder.note=（EditText）row.findViewById（R.id.note）；
holder.unit=（微调器）row.findViewById（R.id.unit）；
holder.cb=（复选框）row.findViewById（R.id.cb）；
holder.txtListChild=（TextView）行
.findviewbyd（R.id.lblListItem）；
row.setTag（支架）；
}
否则{
//视图已存在，请从视图中获取holder实例
holder=（ViewHolder）row.getTag（）；
}
List temp=_listDataChild.get（this._listDataHeader.get（groupPosition））；
临时设置（childPosition，新自定义Childs（holder.qty.getText（）.toString（），holder.unit.getSelectedItem（）.toString（），holder.note.getText（）.toString（），childText.GroupName））；
最终int grp=组位置；
holder.cb.setOnClickListener（新视图.OnClickListener（）{
公共void onClick（视图v）{
最终复选框cb=（复选框）v；
if（cb.isChecked（））{
支架.毫米设置可见性（视图.可见）；
}否则{
支架.毫米设置可见性（视图.消失）；
}
系统输出打印LN（ss）；
}
});
holder.txtListChild.setText（childText.getGroupName（））；
返回行；
}
@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；
}
//类定义中的其他地方
静态类视窗夹{
编辑文本数量；
编辑文本注释；
旋转装置；
线性布局mm；
复选框cb；
文本视图txtListChild；
}
}
public class MainActivity extends AppCompatActivity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<CustomChilds>> listDataChild;
Button save;
Button cancel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
save = (Button) findViewById(R.id.save);
listAdapter = new ExpandableListAdapter(getApplicationContext(), listDataHeader, listDataChild);
expListView.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
save.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
System.out.println("Save clicked");
for(int i = 0; i < listAdapter.getGroupCount();i++) {
for (int k = 0; k < listAdapter.getChildrenCount(i); k++) {
CustomChilds child = listAdapter.getChild(i, k);
String unit=child.getUnit();
String note=child.getNote();
String qut=child.getQuntity();
System.out.println("For i="+i+" and k="+k+" string value is="+child.getNote());
}
}
}
});
}
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<CustomChilds>>();
listDataHeader.add("Nokia");
listDataHeader.add("Apple");
listDataHeader.add("Samsung");
List<CustomChilds> nokia = new ArrayList<CustomChilds>();
nokia.add(new CustomChilds("","","","Nokia1"));
nokia.add(new CustomChilds("","","","Nokia2"));
List<CustomChilds> apple = new ArrayList<CustomChilds>();
apple.add(new CustomChilds("","","","Apple1"));
apple.add(new CustomChilds("","","","Apple2"));
List<CustomChilds> samsung = new ArrayList<CustomChilds>();
samsung.add(new CustomChilds("","","","Samsung1"));
samsung.add(new CustomChilds("","","","Samsung2"));
listDataChild.put(listDataHeader.get(0), nokia); // Header, Child data
listDataChild.put(listDataHeader.get(1), apple);
listDataChild.put(listDataHeader.get(2), samsung);
}
}
public类MainActivity扩展了AppCompatActivity{
可扩展列表适配器；
ExpandableListView解释视图；
列表列表数据头；
HashMapListDataChild；
按钮保存；
按钮取消；
@凌驾
创建时受保护的void（捆绑保存）
private class GenericTextWatcher implements TextWatcher{
private View view;
private GenericTextWatcher(View view) {
this.view = view;
}
public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
public void onTextChanged(CharSequence charSequence, int i, int i1, int i2) {}
public void afterTextChanged(Editable editable) {
String text = editable.toString();
//save the value for the given tag :
MyResultAdapter.this.textValues.put(view.getTag(), editable.toString());
}
}
//you can implement a method like this one for each EditText with the list position as parameter :
public String getValueFromFirstEditText(int position){
//here you need to recreate the id for the first editText
String result = textValues.get("theFirstEditTextAtPos:"+position);
if(result ==null)
result = "default value";
return result;
}
}
save.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
System.out.println("Save clicked");
for(int i = 0; i < listAdapter.getGroupCount();i++) {
String group = listAdapter.getGroup(i).toString();
for (int k = 0; k < listAdapter.getChildrenCount(i); k++) {
String child = listAdapter.getChild(i, k).toString();;
System.out.println("For i="+i+" and k="+k+" string value is="+child);
}
}
}
});
10-14 16:19:38.877 20206-20206/stack.buy.com.stackdemos I/System.out: For
i=0 and k=0 string value is=Nokia1
10-14 16:19:41.395 20206-20206/stack.buy.com.stackdemos I/System.out: For
i=0 and k=1 string value is=Nokia2
10-14 16:19:45.015 20206-20206/stack.buy.com.stackdemos I/System.out: For i
i=1 and k=0 string value is=Apple1
10-14 16:19:47.663 20206-20206/stack.buy.com.stackdemos I/System.out: For
i=1 and k=1 string value is=Apple2
10-14 16:19:50.968 20206-20206/stack.buy.com.stackdemos I/System.out: For
i=2 and k=0 string value is=Samsung1
10-14 16:19:51.957 20206-20206/stack.buy.com.stackdemos I/System.out: For
i=2 and k=1 string value is=Samsung2
public class ExpandableListAdapter 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;
// private final HashMap<String, String, String> mCheckedItems;
String cat, item, quty, units, notes;
ArrayList<String> ss = new ArrayList<>();
public ExpandableListAdapter(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 ( final int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent){
final String childText = (String) getChild(groupPosition, childPosition);
final ViewHolder holder;
View row = convertView;
if (row == null) {
LayoutInflater inflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.mm = (LinearLayout) row.findViewById(R.id.entries);
holder.qty = (EditText) row.findViewById(R.id.qty1);
holder.note = (EditText) row.findViewById(R.id.note);
holder.unit = (Spinner) row.findViewById(R.id.unit);
holder.cb = (CheckBox) row.findViewById(R.id.cb);
holder.txtListChild = (TextView) row
.findViewById(R.id.lblListItem);
row.setTag(holder);
}
else {
// view already exists, get the holder instance from the view
holder = (ViewHolder) row.getTag();
}
final int grp = groupPosition;
holder.cb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final CheckBox cb = (CheckBox) v;
if (cb.isChecked()) {
holder.mm.setVisibility(View.VISIBLE);
} else {
holder.mm.setVisibility(View.GONE);
}
System.out.println(ss);
}
});
holder.txtListChild.setText(childText);
return row;
}
/* public String recollect(int grp, int ch) {
cat = getGroup(grp).toString();
item = getChild(grp, ch).toString();
quty = qty.getText().toString();
units = unit.getSelectedItem().toString();
notes = note.getText().toString();
System.out.println("cat=" + cat + "; item=" + item + "; qty=" + quty + "; unit=" + units + "; note=" + notes);
return cat + ";" + item + ";" + quty + ";" + units + ";" + notes + "_";
}*/
@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;
}
// somewhere else in your class definition
static class ViewHolder {
EditText qty;
EditText note;
Spinner unit;
LinearLayout mm;
CheckBox cb;
TextView txtListChild;
}
}
EditText note= (EditText) v.findViewById(R.id.note);
String value = tv.getText().toString();
package stack.buy.com.stackdemos;
/**
* Created by Desktop - Ganesh on 10/14/2016.
*/
public class CustomChilds {
String Quntity;
String Unit;
String Note;
String GroupName;
public String getQuntity() {
return Quntity;
}
public void setQuntity(String quntity) {
Quntity = quntity;
}
public String getUnit() {
return Unit;
}
public void setUnit(String unit) {
Unit = unit;
}
public String getNote() {
return Note;
}
public void setNote(String note) {
Note = note;
}
public String getGroupName() {
return GroupName;
}
public void setGroupName(String groupName) {
GroupName = groupName;
}
public CustomChilds(String quntity, String unit, String note, String groupName) {
Quntity = quntity;
Unit = unit;
Note = note;
GroupName = groupName;
}
public CustomChilds() {
}
}
public class ExpandableListAdapter extends BaseExpandableListAdapter {
private Context _context;
private List<String> _listDataHeader; // header titles
// child data in format of header title, child title
private HashMap<String, List<CustomChilds>> _listDataChild;
// private final HashMap<String, String, String> mCheckedItems;
String cat, item, quty, units, notes;
ArrayList<String> ss = new ArrayList<>();
public ExpandableListAdapter(Context context, List<String> listDataHeader,
HashMap<String, List<CustomChilds>> listChildData) {
this._context = context;
this._listDataHeader = listDataHeader;
this._listDataChild = listChildData;
}
@Override
public CustomChilds 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 ( final int groupPosition, final int childPosition,
boolean isLastChild, View convertView, ViewGroup parent){
final CustomChilds childText =getChild(groupPosition, childPosition);
final ViewHolder holder;
View row = convertView;
if (row == null) {
LayoutInflater inflater = (LayoutInflater) this._context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.mm = (LinearLayout) row.findViewById(R.id.entries);
holder.qty = (EditText) row.findViewById(R.id.qty1);
holder.note = (EditText) row.findViewById(R.id.note);
holder.unit = (Spinner) row.findViewById(R.id.unit);
holder.cb = (CheckBox) row.findViewById(R.id.cb);
holder.txtListChild = (TextView) row
.findViewById(R.id.lblListItem);
row.setTag(holder);
}
else {
// view already exists, get the holder instance from the view
holder = (ViewHolder) row.getTag();
}
List<CustomChilds> temp = _listDataChild.get(this._listDataHeader.get(groupPosition));
temp.set(childPosition,new CustomChilds(holder.qty.getText().toString(),holder.unit.getSelectedItem().toString(),holder.note.getText().toString(),childText.GroupName));
final int grp = groupPosition;
holder.cb.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
final CheckBox cb = (CheckBox) v;
if (cb.isChecked()) {
holder.mm.setVisibility(View.VISIBLE);
} else {
holder.mm.setVisibility(View.GONE);
}
System.out.println(ss);
}
});
holder.txtListChild.setText(childText.getGroupName());
return row;
}
@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;
}
// somewhere else in your class definition
static class ViewHolder {
EditText qty;
EditText note;
Spinner unit;
LinearLayout mm;
CheckBox cb;
TextView txtListChild;
}
}
public class MainActivity extends AppCompatActivity {
ExpandableListAdapter listAdapter;
ExpandableListView expListView;
List<String> listDataHeader;
HashMap<String, List<CustomChilds>> listDataChild;
Button save;
Button cancel;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
save = (Button) findViewById(R.id.save);
listAdapter = new ExpandableListAdapter(getApplicationContext(), listDataHeader, listDataChild);
expListView.setDescendantFocusability(ViewGroup.FOCUS_AFTER_DESCENDANTS);
save.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
System.out.println("Save clicked");
for(int i = 0; i < listAdapter.getGroupCount();i++) {
for (int k = 0; k < listAdapter.getChildrenCount(i); k++) {
CustomChilds child = listAdapter.getChild(i, k);
String unit=child.getUnit();
String note=child.getNote();
String qut=child.getQuntity();
System.out.println("For i="+i+" and k="+k+" string value is="+child.getNote());
}
}
}
});
}
private void prepareListData() {
listDataHeader = new ArrayList<String>();
listDataChild = new HashMap<String, List<CustomChilds>>();
listDataHeader.add("Nokia");
listDataHeader.add("Apple");
listDataHeader.add("Samsung");
List<CustomChilds> nokia = new ArrayList<CustomChilds>();
nokia.add(new CustomChilds("","","","Nokia1"));
nokia.add(new CustomChilds("","","","Nokia2"));
List<CustomChilds> apple = new ArrayList<CustomChilds>();
apple.add(new CustomChilds("","","","Apple1"));
apple.add(new CustomChilds("","","","Apple2"));
List<CustomChilds> samsung = new ArrayList<CustomChilds>();
samsung.add(new CustomChilds("","","","Samsung1"));
samsung.add(new CustomChilds("","","","Samsung2"));
listDataChild.put(listDataHeader.get(0), nokia); // Header, Child data
listDataChild.put(listDataHeader.get(1), apple);
listDataChild.put(listDataHeader.get(2), samsung);
}
}
save.setOnClickListener(new Button.OnClickListener() {
public void onClick(View v) {
System.out.println("Save clicked");
for(int i = 0; i < listAdapter.getGroupCount();i++) {
for (int k = 0; k < listAdapter.getChildrenCount(i); k++) {
CustomChilds child = listAdapter.getChild(i, k);
String unit=child.getUnit();
String note=child.getNote();
String qut=child.getQuntity();
System.out.println("For i="+i+" and k="+k+" string value is="+child.getNote());
}
}
}
});