我已经从SO阅读了大约30页以及有关在列表中跟踪检查状态的教程，但是在可扩展ListView中这样做的信息很少。
我让孩子们填充了复选框，但当我检查一组孩子的盒子时，其他组中的随机孩子也会检查。我需要阻止这一点。我认为我读到的最好的信息是将复选框设置为单独的标签，但我不知道如何设置多个标签，当我尝试时，我得到一个类错配错误，将复选框与转换视图进行比较。
有没有人遇到过跟踪expandablelistview的孩子中的复选框状态的好方法？
我做了多处更改，所以我要输入整个适配器代码。请检查几行getGroupView和整个getChildView，并帮我看看我做错了什么。
编辑： 现在发生的事情是，当我选中一个框然后展开另一个组时，所有选中的框都取消选中：
public class MyExpandableListAdapter extends BaseExpandableListAdapter
implements OnCheckedChangeListener {
private Context mContext;
private ArrayList<ContactNameItems> mListDataHeader;
private HashMap<String, List<ContactPhoneItems>> mListDataChild;
private boolean[] mGetChecked;
private HashMap<String, boolean[]> mChildCheckStates;
private ArrayList<String> selectedNumbers;
private ChildViewHolder childViewHolder;
private GroupViewHolder groupViewHolder;
private String numberText;
public MyExpandableListAdapter(Context context,
ArrayList<ContactNameItems> listDataHeader,
HashMap<String, List<ContactPhoneItems>> listDataChild,
ArrayList<String> listOfNumbers) {
mContext = context;
mListDataHeader = listDataHeader;
mListDataChild = listDataChild;
selectedNumbers = listOfNumbers;
mChildCheckStates = new HashMap<String, boolean[]>();
}
@Override
public int getGroupCount() {
return mListDataHeader.size();
}
@Override
public ContactNameItems getGroup(int groupPosition) {
return mListDataHeader.get(groupPosition);
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
String contactName = getGroup(groupPosition).getName();
Bitmap contactImage = getGroup(groupPosition).getImage();
mGetChecked = new boolean[getChildrenCount(groupPosition)];
mChildCheckStates.put(contactName, mGetChecked);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.contact_name_item, null);
groupViewHolder = new GroupViewHolder();
groupViewHolder.mContactName = (TextView) convertView
.findViewById(R.id.lblListHeader);
groupViewHolder.mContactImage = (ImageView) convertView
.findViewById(R.id.ivContactPhoto);
convertView.setTag(groupViewHolder);
} else {
groupViewHolder = (GroupViewHolder) convertView.getTag();
}
if (contactImage != null) {
groupViewHolder.mContactImage.setImageBitmap(contactImage);
} else {
groupViewHolder.mContactImage
.setImageResource(R.drawable.default_contact);
}
groupViewHolder.mContactName.setText(contactName);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return mListDataChild.get(mListDataHeader.get(groupPosition).getName())
.size();
}
@Override
public ContactPhoneItems getChild(int groupPosition, int childPosition) {
return mListDataChild.get(mListDataHeader.get(groupPosition).getName())
.get(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) {
final String contactName = getGroup(groupPosition).getName();
final int mChildPosition = childPosition;
numberText = getChild(groupPosition, childPosition).getNumber();
String typeText = getChild(groupPosition, childPosition).getPhoneType();
mGetChecked = mChildCheckStates.get(contactName);
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.contact_detail_item, null);
childViewHolder = new ChildViewHolder();
childViewHolder.mPhoneNumber = (TextView) convertView
.findViewById(R.id.tv_phone_number);
childViewHolder.mPhoneType = (TextView) convertView
.findViewById(R.id.tv_phone_type);
childViewHolder.mCheckBox = (CheckBox) convertView
.findViewById(R.id.checkBox);
convertView.setTag(R.layout.contact_detail_item, childViewHolder);
} else {
childViewHolder = (ChildViewHolder) convertView
.getTag(R.layout.contact_detail_item);
}
childViewHolder.mPhoneNumber.setText(numberText);
childViewHolder.mPhoneType.setText(typeText);
childViewHolder.mCheckBox.setChecked(mGetChecked[mChildPosition]);
childViewHolder.mCheckBox.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
boolean isChecked = childViewHolder.mCheckBox.isChecked();
Log.d("Debug", "isChecked = " + String.valueOf(isChecked));
if (isChecked) {
selectedNumbers.add(numberText);
} else {
selectedNumbers.remove(numberText);
}
childViewHolder.mCheckBox.setChecked(isChecked);
mGetChecked[mChildPosition] = isChecked;
mChildCheckStates.put(contactName, mGetChecked);
}
});
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
@Override
public boolean hasStableIds() {
return false;
}
public ArrayList<String> getSelectedNumbers() {
return selectedNumbers;
}
public final class GroupViewHolder {
TextView mContactName;
ImageView mContactImage;
}
public final class ChildViewHolder {
TextView mPhoneNumber;
TextView mPhoneType;
CheckBox mCheckBox;
}
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// TODO Auto-generated method stub
Log.d("Debug", "onCheckChangedListener : " + String.valueOf(isChecked));
}
}
答案 0 :(得分：12)
这是工作解决方案
好的，虽然互联网上似乎有很多关于可扩展列表视图中的复选框的建议，但没有一个对我有用。我能够在一群人的帮助下得到它，尤其是dev84。现在我不会声称这是完美的或万无一失的。我只是声称它对我有用。我已经在2台设备上进行了测试，我对此非常满意。
所以我已经使用了我的工作代码，将其缩减到其基本部分，并添加了一堆有用的评论，所以任何需要它的人都可以。希望它对你来说和我一样好用。享受
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import android.annotation.SuppressLint;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseExpandableListAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.TextView;
// Eclipse wanted me to use a sparse array instead of my hashmaps, I just suppressed that suggestion
@SuppressLint("UseSparseArrays")
public class MyExpandableListAdapter extends BaseExpandableListAdapter {
// Define activity context
private Context mContext;
/*
* Here we have a Hashmap containing a String key
* (can be Integer or other type but I was testing
* with contacts so I used contact name as the key)
*/
private HashMap<String, List<ExpListChildItems>> mListDataChild;
// ArrayList that is what each key in the above
// hashmap points to
private ArrayList<ExpListGroupItems> mListDataGroup;
// Hashmap for keeping track of our checkbox check states
private HashMap<Integer, boolean[]> mChildCheckStates;
// Our getChildView & getGroupView use the viewholder patter
// Here are the viewholders defined, the inner classes are
// at the bottom
private ChildViewHolder childViewHolder;
private GroupViewHolder groupViewHolder;
/*
* For the purpose of this document, I'm only using a single
* textview in the group (parent) and child, but you're limited only
* by your XML view for each group item :)
*/
private String groupText;
private String childText
/* Here's the constructor we'll use to pass in our calling
* activity's context, group items, and child items
*/
public MyExpandableListAdapter(Context context,
ArrayList<ExpListGroupItems> listDataGroup, HashMap<String, List<ExpListChildItems>> listDataChild) {
mContext = context;
mListDataGroup = listDataGroup;
mListDataChild = listDataChild;
// Initialize our hashmap containing our check states here
mChildCheckStates = new HashMap<Integer, boolean[]>();
}
@Override
public int getGroupCount() {
return mListDataGroup.size();
}
/*
* This defaults to "public object getGroup" if you auto import the methods
* I always make a point to change it from "object" to whatever item
* I passed through the constructor
*/
@Override
public ExpListGroupItems getGroup(int groupPosition) {
return mListDataGroup.get(groupPosition);
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
// I passed a text string into an activity holding a getter/setter
// which I passed in through "ExpListGroupItems".
// Here is where I call the getter to get that text
groupText = getGroup(groupPosition).getGroupText();
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.group_item, null);
// Initialize the GroupViewHolder defined at the bottom of this document
groupViewHolder = new GroupViewHolder();
groupViewHolder.mGroupText = (TextView) convertView.findViewById(R.id.groupTextView);
convertView.setTag(groupViewHolder);
} else {
groupViewHolder = (GroupViewHolder) convertView.getTag();
}
groupViewHolder.mGroupText.setText(groupText);
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
return mListDataChild.get(mListDataGroup.get(groupPosition).getMyText()).size();
}
/*
* This defaults to "public object getChild" if you auto import the methods
* I always make a point to change it from "object" to whatever item
* I passed through the constructor
*/
@Override
public ExpListChildItems getChild(int groupPosition, int childPosition) {
return mListDataChild.get(mListDataGroup.get(groupPosition).getMyText()).get(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) {
final int mGroupPosition = groupPosition;
final int mChildPosition = childPosition;
// I passed a text string into an activity holding a getter/setter
// which I passed in through "ExpListChildItems".
// Here is where I call the getter to get that text
childText = getChild(mGroupPosition, mChildPosition).getChildText();
if (convertView == null) {
LayoutInflater inflater = (LayoutInflater) this.mContext
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = inflater.inflate(R.layout.child_item, null);
childViewHolder = new ChildViewHolder();
childViewHolder.mChildText = (TextView) convertView
.findViewById(R.id.childTextView);
childViewHolder.mCheckBox = (CheckBox) convertView
.findViewById(R.id.checkBox);
convertView.setTag(R.layout.child_item, childViewHolder);
} else {
childViewHolder = (ChildViewHolder) convertView
.getTag(R.layout.child_item);
}
childViewHolder.mChildText.setText(childText);
/*
* You have to set the onCheckChangedListener to null
* before restoring check states because each call to
* "setChecked" is accompanied by a call to the
* onCheckChangedListener
*/
childViewHolder.mCheckBox.setOnCheckedChangeListener(null);
if (mChildCheckStates.containsKey(mGroupPosition)) {
/*
* if the hashmap mChildCheckStates<Integer, Boolean[]> contains
* the value of the parent view (group) of this child (aka, the key),
* then retrive the boolean array getChecked[]
*/
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
// set the check state of this position's checkbox based on the
// boolean value of getChecked[position]
childViewHolder.mCheckBox.setChecked(getChecked[mChildPosition]);
} else {
/*
* if the hashmap mChildCheckStates<Integer, Boolean[]> does not
* contain the value of the parent view (group) of this child (aka, the key),
* (aka, the key), then initialize getChecked[] as a new boolean array
* and set it's size to the total number of children associated with
* the parent group
*/
boolean getChecked[] = new boolean[getChildrenCount(mGroupPosition)];
// add getChecked[] to the mChildCheckStates hashmap using mGroupPosition as the key
mChildCheckStates.put(mGroupPosition, getChecked);
// set the check state of this position's checkbox based on the
// boolean value of getChecked[position]
childViewHolder.mCheckBox.setChecked(false);
}
childViewHolder.mCheckBox.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
if (isChecked) {
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
getChecked[mChildPosition] = isChecked;
mChildCheckStates.put(mGroupPosition, getChecked);
} else {
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
getChecked[mChildPosition] = isChecked;
mChildCheckStates.put(mGroupPosition, getChecked);
}
}
});
return convertView;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return false;
}
@Override
public boolean hasStableIds() {
return false;
}
public final class GroupViewHolder {
TextView mGroupText;
}
public final class ChildViewHolder {
TextView mChildText;
CheckBox mCheckBox;
}
}
答案 1 :(得分：2)
我看到你有一个selectedNumbers对象，那是什么类型的集合？拥有一个地图或列表或某些基于更独特的东西的集合可能是最有意义的，例如小组＆amp;孩子的位置。然后你可以这样做：
（编辑：编辑代码以确保checkedChangedListener不会触发）
（编辑2基于OP的更新）：您可能不应该使用字符串映射到布尔数组。而是试试这个。它非常相似，但使用的是比Strings
...
HashMap<Integer, Integer> mCheckedStates; // assume initialized as you did
...
childViewHolder.mPhoneNumber.setText(numberText);
childViewHolder.mPhoneType.setText(typeText);
childViewHolder.mCheckBox.setOnCheckedChangeListener(null);
if (mCheckedStates.contains(groupPosition)) {
int checkedChildren = mCheckedStates.get(groupPosition);
if ((checkedChildren & (1 << childPosition)) == 1) {
childViewHolder.mCheckBox.setChecked(true);
} else {
//Edit: Cannot rely on checkbox being false on Recycle,
childViewHolder.mCheckBox.setChecked(false);
}
}
childViewHolder.mCheckBox.setOnCheckedChangeListener(this);
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
// get group and child positions
if (isChecked) {
if (mCheckedStates.contains(groupPosition)) {
// I'm using a bitmap to keep resources low, but it's not necessary to do it this way
int childmap = mCheckedStates.get(groupPosition);
childmap += (1 << childPosition);
mCheckedStates.put(groupPosition, childmap);
} else {
mCheckedStates.put(groupPosition, (1 << childPosition));
}
} else {
if (mCheckedStates.contains(groupPosition)) {
int childmap = mCheckedStates.get(groupPosition);
if (childmap == (1 << childPosition)) {
mCheckedStates.remove(groupPosition);
} else {
childmap &= ~(1 << childPosition);
mCheckedStates.put(groupPosition, childmap);
}
}
}
}
}
答案 2 :(得分：2)
我也是同一问题的受害者，并尝试了你的解决方案，现在它的工作就像一个魅力。谢谢哥们儿。 ：）
我刚刚使用String而不是自定义域模型修改了代码，以方便其他人。
<强> MainActivity.java
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.Toast;
public class MainActivity extends Activity {
List<String> groupList;
List<String> childList;
Map<String, List<String>> laptopCollection;
ExpandableListView expListView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d("-Test Exapansion-", "Nai Yara");
createGroupList();
createCollection();
expListView = (ExpandableListView) findViewById(R.id.laptop_list);
final MyExpandableListAdapter expListAdapter = new MyExpandableListAdapter
(getApplicationContext() ,
groupList, laptopCollection);
expListView.setAdapter(expListAdapter);
expListView.getHeaderViewsCount();
//expListView.expandGroup(1);
//expListView.expandGroup(2);
int numberOfHeaders = expListView.getExpandableListAdapter().getGroupCount();
Log.d("-Test Exapansion-", "Number of Groups are:"+numberOfHeaders);
for(int i = 0; i<numberOfHeaders; i++){
expListView.expandGroup(i);
}
setGroupIndicatorToRight();
expListView.setOnChildClickListener(new OnChildClickListener() {
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
final String selected = (String) expListAdapter.getChild(
groupPosition, childPosition);
Toast.makeText(getBaseContext(), selected, Toast.LENGTH_LONG)
.show();
return true;
}
});
}
private void createGroupList() {
groupList = new ArrayList<String>();
groupList.add("HP");
groupList.add("Dell");
groupList.add("Lenovo");
groupList.add("Sony");
groupList.add("HCL");
groupList.add("Samsung");
groupList.add("HTC");
}
private void createCollection() {
// preparing laptops collection(child)
String[] hpModels = { "HP Pavilion G6-2014TX", "ProBook HP 4540",
"HP Envy 4-1025TX" };
String[] hclModels = { "HCL S2101", "HCL L2102", "HCL V2002" };
String[] lenovoModels = { "IdeaPad Z Series", "Essential G Series",
"ThinkPad X Series", "Ideapad Z Series" };
String[] sonyModels = { "VAIO E Series", "VAIO Z Series",
"VAIO S Series", "VAIO YB Series" };
String[] dellModels = { "Inspiron", "Vostro", "XPS" };
String[] samsungModels = { "NP Series", "Series 5", "SF Series" };
String[] hTcModels = { "One", "One X", "Desire Series" };
laptopCollection = new LinkedHashMap<String, List<String>>();
for (String laptop : groupList) {
if (laptop.equals("HP")) {
loadChild(hpModels);
} else if (laptop.equals("Dell"))
loadChild(dellModels);
else if (laptop.equals("Sony"))
loadChild(sonyModels);
else if (laptop.equals("HCL"))
loadChild(hclModels);
else if (laptop.equals("Samsung"))
loadChild(samsungModels);
else if (laptop.equals("HTC"))
loadChild(hTcModels);
else
loadChild(lenovoModels);
laptopCollection.put(laptop, childList);
}
}
private void loadChild(String[] laptopModels) {
childList = new ArrayList<String>();
for (String model : laptopModels)
childList.add(model);
}
private void setGroupIndicatorToRight() {
/* Get the screen width */
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
expListView.setIndicatorBounds(width - getDipsFromPixel(35), width
- getDipsFromPixel(5));
}
// Convert pixel to dip
public int getDipsFromPixel(float pixels) {
// Get the screen's density scale
final float scale = getResources().getDisplayMetrics().density;
// Convert the dps to pixels, based on density scale
return (int) (pixels * scale + 0.5f);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
//getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
<强> MyExpandableListAdapter.java
import java.util.ArrayList;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import android.app.Activity;
import android.os.Bundle;
import android.util.DisplayMetrics;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.ExpandableListView;
import android.widget.ExpandableListView.OnChildClickListener;
import android.widget.Toast;
public class MainActivity extends Activity {
List<String> groupList;
List<String> childList;
Map<String, List<String>> laptopCollection;
ExpandableListView expListView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Log.d("-Test Exapansion-", "Nai Yara");
createGroupList();
createCollection();
expListView = (ExpandableListView) findViewById(R.id.laptop_list);
final MyExpandableListAdapter
expListAdapter =
new MyExpandableListAdapter(getApplicationContext()
, groupList, laptopCollection);
expListView.setAdapter(expListAdapter);
expListView.getHeaderViewsCount();
int numberOfHeaders = expListView.getExpandableListAdapter().getGroupCount();
Log.d("-Test Exapansion-", "Number of Groups are:"+numberOfHeaders);
for(int i = 0; i<numberOfHeaders; i++){
expListView.expandGroup(i);
}
setGroupIndicatorToRight();
expListView.setOnChildClickListener(new OnChildClickListener() {
public boolean onChildClick(ExpandableListView parent, View v,
int groupPosition, int childPosition, long id) {
final String selected = (String) expListAdapter.getChild(
groupPosition, childPosition);
Toast.makeText(getBaseContext(), selected, Toast.LENGTH_LONG)
.show();
return true;
}
});
}
private void createGroupList() {
groupList = new ArrayList<String>();
groupList.add("HP");
groupList.add("Dell");
groupList.add("Lenovo");
groupList.add("Sony");
groupList.add("HCL");
groupList.add("Samsung");
groupList.add("HTC");
}
private void createCollection() {
// preparing laptops collection(child)
String[] hpModels = { "HP Pavilion G6-2014TX", "ProBook HP 4540",
"HP Envy 4-1025TX" };
String[] hclModels = { "HCL S2101", "HCL L2102", "HCL V2002" };
String[] lenovoModels = { "IdeaPad Z Series", "Essential G Series",
"ThinkPad X Series", "Ideapad Z Series" };
String[] sonyModels = { "VAIO E Series", "VAIO Z Series",
"VAIO S Series", "VAIO YB Series" };
String[] dellModels = { "Inspiron", "Vostro", "XPS" };
String[] samsungModels = { "NP Series", "Series 5", "SF Series" };
String[] hTcModels = { "One", "One X", "Desire Series" };
laptopCollection = new LinkedHashMap<String, List<String>>();
for (String laptop : groupList) {
if (laptop.equals("HP")) {
loadChild(hpModels);
} else if (laptop.equals("Dell"))
loadChild(dellModels);
else if (laptop.equals("Sony"))
loadChild(sonyModels);
else if (laptop.equals("HCL"))
loadChild(hclModels);
else if (laptop.equals("Samsung"))
loadChild(samsungModels);
else if (laptop.equals("HTC"))
loadChild(hTcModels);
else
loadChild(lenovoModels);
laptopCollection.put(laptop, childList);
}
}
private void loadChild(String[] laptopModels) {
childList = new ArrayList<String>();
for (String model : laptopModels)
childList.add(model);
}
private void setGroupIndicatorToRight() {
/* Get the screen width */
DisplayMetrics dm = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(dm);
int width = dm.widthPixels;
expListView.setIndicatorBounds(width - getDipsFromPixel(35), width
- getDipsFromPixel(5));
}
// Convert pixel to dip
public int getDipsFromPixel(float pixels) {
// Get the screen's density scale
final float scale = getResources().getDisplayMetrics().density;
// Convert the dps to pixels, based on density scale
return (int) (pixels * scale + 0.5f);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
//getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
答案 3 :(得分：0)
问题是您使用职位作为ID。位置不是id。位置可能会发生变化，没有组位的孩子的位置也不是唯一标识符。
答案 4 :(得分：0)
首先，您必须在HashMap
CheckBoxState以维护孩子ExpandablelistView
在适配器中声明HashMap - -
private HashMap mChildCheckStates; // New HashMap Created
在适配器中使用代码
cb.setOnCheckedChangeListener(null);
if (mChildCheckStates.containsKey(mGroupPosition)) {
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
cb.setChecked(getChecked[mChildPosition]);
}else {
boolean getChecked[] = new boolean[getChildrenCount(mGroupPosition)];
mChildCheckStates.put(mGroupPosition, getChecked);
cb.setChecked(false);
}
cb.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
getChecked[mChildPosition] = isChecked;
mChildCheckStates.put(mGroupPosition, getChecked);
//Toast.makeText(mContext,"group-"+mGroupPosition+"child-"+mChildPosition,Toast.LENGTH_SHORT).show();
// String value=mListDataChild[0];
Toast.makeText(mContext,"-"+mListDataChild,Toast.LENGTH_SHORT).show();
} else {
boolean getChecked[] = mChildCheckStates.get(mGroupPosition);
getChecked[mChildPosition] = isChecked;
mChildCheckStates.put(mGroupPosition, getChecked);
Toast.makeText(mContext,"group-"+mGroupPosition+"child-"+mChildPosition,Toast.LENGTH_SHORT).show();
}
}
});
cb是复选框。
我希望这个逻辑能帮助AnyOne 感谢