I have an ExpandableListView with a checkbox next to group name and when
expanded, child items with checkbox as well.
Let's suppose I have 4 groups with 50 childs. When a group is expanded, and
I click on select all checkbox, everything works fine, all checkbox are
selected and keep their state if I scroll.
But if I scroll untill the last child of the list, scrolling gets buggy
after that ( scrolling to the top and then touching the screen to stop the
scrolling doesn't work anymore), clicking on group doesn't work anymore
too, untill I click on selectall checkbox again.
Clicking on a child checkbox does nothing, I must click on selectall
checkbox for everything to work.
I changed Focusable state of the child checkbox, group checkbox and tried
many ways, but I can not find a solution to this. Do you have an idea of
where it is coming from?
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 :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android";
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<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>
</LinearLayout>
childitems.xml :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android";>
<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>
</LinearLayout>
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