我有一个 ExpandableListView，组名称旁边有一个复选框，展开时，子项也有复选框。
假设我有 4 个小组，有 50 个孩子。当一个组展开时，我点击全选复选框，一切正常，所有复选框都被选中并在我滚动时保持它们的状态。
但是，如果我滚动到列表的最后一个子项，之后滚动就会出错（滚动到顶部然后触摸屏幕以停止滚动不再起作用），单击组也不再起作用，直到我再次单击全选复选框。单击子复选框没有任何作用，我必须单击全选复选框才能使一切正常工作。
我更改了子复选框、组复选框的可聚焦状态并尝试了很多方法，但我找不到解决方案。你知道它来自哪里吗？
public class ExpandableListAdapter extends BaseExpandableListAdapter {
LayoutInflater cinflater;
LayoutInflater ginflater;
ArrayList<Group> array;
Context context;
public ExpandableListAdapter(Context context, ArrayList<Group> array) {
super();
cinflater = LayoutInflater.from(context);
ginflater = LayoutInflater.from(context);
this.array = array;
this.context = context;
}
public class ChildViewHolder {
CheckBox contactcheckbox;
TextView name;
}
@Override
public int getChildrenCount(int groupPosition) {
// TODO Auto-generated method stub
return array.get(groupPosition).getContacts().size();
}
private OnCheckedChangeListener contactchecklistener = new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton checkboxView, boolean isChecked) {
Contact contact = (Contact) checkboxView.getTag();
contact.setCheck(isChecked);
}
};
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
ChildViewHolder cholder;
if(convertView == null){
cholder = new ChildViewHolder();
convertView = cinflater.inflate(R.layout.childsitems, null);
cholder.name = (TextView) convertView.findViewById(R.id.childnametextview);
cholder.contactcheckbox = (CheckBox) convertView.findViewById(R.id.childcheckbox);
cholder.contactcheckbox.setOnCheckedChangeListener(contactchecklistener);
convertView.setTag(cholder);
}else{
cholder = (ChildViewHolder) convertView.getTag();
}
cholder.contactcheckbox.setTag(array.get(groupPosition).getContacts().get(childPosition));
cholder.contactcheckbox.setChecked(array.get(groupPosition).getContacts().get(childPosition).isCheck());
cholder.name.setText(array.get(groupPosition).getContacts().get(childPosition).getName());
return convertView;
}
public class GroupViewHolder {
TextView groupname;
CheckBox groupcheck;
}
@Override
public int getGroupCount() {
// TODO Auto-generated method stub
return array.size();
}
private OnCheckedChangeListener groupchecklistener = new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
int index = (Integer) buttonView.getTag();
for(int i = 0;i<array.get(index).getContacts().size();i++){
array.get(index).getContacts().get(i).setCheck(isChecked);
}
array.get(index).setCheck(isChecked);
notifyDataSetChanged();
}
};
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
GroupViewHolder gholder;
if(convertView==null){
gholder = new GroupViewHolder();
convertView = ginflater.inflate(R.layout.groupsitems,null);
gholder.groupname = (TextView)convertView.findViewById(R.id.groupnametextview);
gholder.groupcheckbox = (CheckBox)convertView.findViewById(R.id.groupcheckbox);
gholder.groupcheckbox.setOnCheckedChangeListener(groupchecklistener);
convertView.setTag(gholder);
}else{
gholder = (GroupViewHolder)convertView.getTag();
}
gholder.groupname.setText(array.get(groupPosition).getGroupname());
gholder.groupname.setTextSize(24);
gholder.groupname.setTextColor(Color.parseColor("#FF858585"));
gholder.groupname.setTypeface(Typeface.DEFAULT, Typeface.BOLD);
int paddingleft = 48; // 38 dps
final float scale = getResources().getDisplayMetrics().density;
int dpvalue = (int) (paddingleft * scale + 0.5f);
gholder.groupname.setPadding(dpvalue, 16, 0, 16);
gholder.groupcheckbox.setTag(groupPosition);
gholder.groupcheckbox.setChecked(array.get(groupPosition).isCheck());
if(isExpanded == true){
convertView.setBackgroundDrawable(getResources().getDrawable(R.drawable.expandedbackground));
}else{
convertView.setBackgroundColor(Color.TRANSPARENT);
}
return convertView;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return 0;
}
@Override
public Object getGroup(int groupPosition) {
// TODO Auto-generated method stub
return null;
}
@Override
public long getGroupId(int groupPosition) {
// TODO Auto-generated method stub
return 0;
}
@Override
public boolean hasStableIds() {
// TODO Auto-generated method stub
return false;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
// TODO Auto-generated method stub
return false;
}
}
groupsitems.xml：
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent" >
<CheckBox
android:id="@+id/groupcheckbox"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:layout_marginTop="12dp"
android:focusable="false"
android:gravity="right|center"
android:paddingRight="10dp" />
<TextView
android:id="@+id/groupnametextview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_toLeftOf="@+id/groupcheckbox"
android:focusableInTouchMode="false"
android:text="Large Text"
android:textAppearance="?android:attr/textAppearanceLarge"
android:textColor="#FF858585"
android:textStyle="bold" />
</RelativeLayout>
childitems.xml：
<RelativeLayout
android:id="@+id/relativeLayout1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginTop="8dp"
android:paddingLeft="8dp" >
<TextView
android:id="@+id/childnametextview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/childcheckbox"
android:gravity="right|center"
android:paddingLeft="16dp"
android:textColor="#FFAFAFAF"
android:textSize="16sp"
android:textStyle="bold" />
<CheckBox
android:id="@+id/childcheckbox"
android:layout_width="48dp"
android:layout_height="48dp"
android:layout_alignParentLeft="true"
android:layout_centerVertical="true" />
</RelativeLayout>