notifyDataSetChanged后未调用android getChildView
我有一个expandableListView,并试图像这样更改它的子视图:notifyDataSetChanged后未调用android getChildView,android,adapter,expandablelistview,notifydatasetchanged,Android,Adapter,Expandablelistview,Notifydatasetchanged,我有一个expandableListView,并试图像这样更改它的子视图: ((SubItem) adapter.getChild(i+1, 5)).setCount(unreadBox); adapter.notifyDataSetChanged(); 以下是我的适配器类: public class DrawerAdapter extends BaseExpandableListAdapter { private Context context; private List<Item
((SubItem) adapter.getChild(i+1, 5)).setCount(unreadBox);
adapter.notifyDataSetChanged();
以下是我的适配器类:
public class DrawerAdapter extends BaseExpandableListAdapter {
private Context context;
private List<Item> items;
private List<List<SubItem>> subItems;
public DrawerAdapter(Context context, List<Item> items, List<List<SubItem>> subItems) {
this.context = context;
this.items = items;
this.subItems = subItems;
}
@Override
public int getGroupCount() {
return items.size();
}
@Override
public int getChildrenCount(int groupPosition) {
return subItems.get(groupPosition).size();
}
@Override
public Object getGroup(int position) {
return items.get(position);
}
@Override
public Object getChild(int groupPosition, int childPosition) {
return subItems.get(groupPosition).get(childPosition);
}
@Override
public long getGroupId(int position) {
return position;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public boolean hasStableIds() {
return false;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded, View view, ViewGroup viewGroup) {
Item item = (Item) getGroup(groupPosition);
if (view == null) {
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = layoutInflater.inflate(R.layout.list_drawer_group, null);
}
ImageView iconView = (ImageView) view.findViewById(R.id.icon_view);
if (item.iconDrawableId != null) {
iconView.setImageResource(item.iconDrawableId);
iconView.setVisibility(View.VISIBLE);
} else {
iconView.setVisibility(View.GONE);
}
TextView groupHeader = (TextView) view.findViewById(R.id.group_header);
groupHeader.setText(item.title);
if (item.iconDrawableId != null) {
groupHeader.setPadding(
DimensionHelper.dpToPixels(context, 4.0f), 0,
DimensionHelper.dpToPixels(context, 16.0f), 0);
} else {
groupHeader.setPadding(
DimensionHelper.dpToPixels(context, 16.0f), 0,
DimensionHelper.dpToPixels(context, 16.0f), 0);
}
ImageView imageView = (ImageView) view.findViewById(R.id.image_view);
imageView.setImageResource(isExpanded ? R.drawable.ic_navigation_collapse : R.drawable.ic_navigation_expand);
imageView.setVisibility(getChildrenCount(groupPosition) > 0 ? View.VISIBLE : View.GONE);
return view;
}
@Override
public View getChildView(int groupPosition, int childPosition, boolean isExpanded, View view, ViewGroup viewGroup) {
SubItem subItem = (SubItem) getChild(groupPosition, childPosition);
if (view == null) {
LayoutInflater layoutInflater = (LayoutInflater) context
.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = layoutInflater.inflate(R.layout.list_drawer_item, null);
}
TextView colorPreView = (TextView) view.findViewById(R.id.colorPreView);
if (subItem.getColor() != -1) {
colorPreView.setBackgroundColor(subItem.getColor());
colorPreView.setVisibility(View.VISIBLE);
} else {
colorPreView.setVisibility(View.GONE);
}
ImageView iconView = (ImageView) view.findViewById(R.id.icon_view);
if (subItem.iconDrawableId != null) {
iconView.setImageResource(subItem.iconDrawableId);
iconView.setVisibility(View.VISIBLE);
} else {
iconView.setVisibility(View.GONE);
}
TextView title = (TextView) view.findViewById(R.id.title_text_view);
title.setText(subItem.title);
if (subItem.iconDrawableId != null) {
title.setPadding(
DimensionHelper.dpToPixels(context, 4.0f), 0,
DimensionHelper.dpToPixels(context, 16.0f), 0);
} else {
title.setPadding(
DimensionHelper.dpToPixels(context, 40.0f), 0,
DimensionHelper.dpToPixels(context, 16.0f), 0);
}
TextView counter = (TextView) view.findViewById(R.id.counter_text_view);
counter.setText(String.valueOf(subItem.count));
counter.setVisibility(subItem.count > 0 ? View.VISIBLE : View.GONE);
return view;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
public static class Item {
protected String title;
protected Integer iconDrawableId;
protected Listener listener;
public Item(String title, Integer iconDrawableId, Listener listener) {
this.title = title;
this.iconDrawableId = iconDrawableId;
this.listener = listener;
}
public Listener getListener() {
return listener;
}
public static interface Listener {
public void onClick(FragmentManager fragmentManager);
}
}
public static class SubItem extends Item {
protected long count;
protected int color;
public SubItem(String title, Integer iconDrawableId, long count, int color, Listener listener) {
super(title, iconDrawableId, listener);
this.count = count;
this.color = color;
}
public long getCount() {
return count;
}
public void setCount(long count) {
this.count = count;
}
public int getColor() {
return color;
}
public void setColor(int color) {
this.color = color;
}
}
}
public类DrawerAdapter扩展了BaseExpandableListAdapter{
私人语境;
私人清单项目;
私人清单分项;
公共抽屉标识符(上下文、列表项、列表子项){
this.context=上下文;
这个项目=项目;
this.subItems=子项;
}
@凌驾
public int getGroupCount(){
返回items.size();
}
@凌驾
公共整数getChildrenCount(整数组位置){
返回子项.get(groupPosition).size();
}
@凌驾
公共对象getGroup(int位置){
返回项目。获取(位置);
}
@凌驾
公共对象getChild(int-groupPosition,int-childPosition){
返回子项.get(groupPosition).get(childPosition);
}
@凌驾
公共长getGroupId(int位置){
返回位置;
}
@凌驾
公共长getChildId(int-groupPosition,int-childPosition){
返回子位置;
}
@凌驾
公共布尔表ID(){
返回false;
}
@凌驾
公共视图getGroupView(int groupPosition、布尔值isExpanded、视图视图、视图组ViewGroup){
Item Item=(Item)getGroup(groupPosition);
如果(视图==null){
LayoutInflater LayoutInflater=(LayoutInflater)上下文
.getSystemService(上下文布局\充气机\服务);
视图=布局更平坦。充气(R.layout.list\u drawer\u group,空);
}
ImageView图标视图=(ImageView)视图.findViewById(R.id.icon\u视图);
如果(item.icondrawbleid!=null){
iconView.setImageResource(item.iconDrawableId);
iconView.setVisibility(View.VISIBLE);
}否则{
iconView.setVisibility(View.GONE);
}
TextView组头=(TextView)view.findViewById(R.id.group\u头);
groupHeader.setText(item.title);
如果(item.icondrawbleid!=null){
groupHeader.setPadding(
DimensionHelper.dpToPixels(上下文,4.0f),0,
DimensionHelper.dpToPixels(上下文,16.0f),0);
}否则{
groupHeader.setPadding(
DimensionHelper.dpToPixels(上下文,16.0f),0,
DimensionHelper.dpToPixels(上下文,16.0f),0);
}
ImageView=(ImageView)view.findViewById(R.id.image\u视图);
setImageResource(isExpanded?R.drawable.ic_navigation_collapse:R.drawable.ic_navigation_expand);
imageView.setVisibility(getChildrenCount(groupPosition)>0?View.VISIBLE:View.GONE);
返回视图;
}
@凌驾
公共视图getChildView(int-groupPosition、int-childPosition、布尔isExpanded、视图视图、视图组视图组){
子项子项=(子项)getChild(groupPosition,childPosition);
如果(视图==null){
LayoutInflater LayoutInflater=(LayoutInflater)上下文
.getSystemService(上下文布局\充气机\服务);
视图=布局更平坦。充气(R.layout.list\u drawer\u item,空);
}
TextView colorPreView=(TextView)view.findViewById(R.id.colorPreView);
if(子项.getColor()!=-1){
colorPreView.setBackgroundColor(子项.getColor());
colorPreView.setVisibility(View.VISIBLE);
}否则{
colorPreView.setVisibility(View.GONE);
}
ImageView图标视图=(ImageView)视图.findViewById(R.id.icon\u视图);
if(subItem.iconDrawableId!=null){
iconView.setImageResource(子项iconDrawableId);
iconView.setVisibility(View.VISIBLE);
}否则{
iconView.setVisibility(View.GONE);
}
TextView title=(TextView)view.findViewById(R.id.title\u text\u view);
title.setText(子项.title);
if(subItem.iconDrawableId!=null){
title.setPadding(
DimensionHelper.dpToPixels(上下文,4.0f),0,
DimensionHelper.dpToPixels(上下文,16.0f),0);
}否则{
title.setPadding(
DimensionHelper.dpToPixels(上下文,40.0f),0,
DimensionHelper.dpToPixels(上下文,16.0f),0);
}
TextView计数器=(TextView)view.findViewById(R.id.counter\u text\u视图);
counter.setText(String.valueOf(subItem.count));
counter.setVisibility(subItem.count>0?View.VISIBLE:View.GONE);
返回视图;
}
@凌驾
公共布尔值isChildSelectable(int-groupPosition,int-childPosition){
返回true;
}
公共静态类项{
受保护的字符串标题;
受保护的整数ICondrawbleId;
受保护的侦听器;
公共项(字符串标题、整数ICondrawbleId、侦听器){
this.title=标题;
this.icondrawbleid=icondrawbleid;
this.listener=listener;
}
公共侦听器getListener(){
返回侦听器;
}
公共静态接口侦听器{
公共void onClick(FragmentManager FragmentManager);
}
}
公共静态类子项扩展项{
保护长计数;
保护色;
公共子项(字符串标题、整型ICondrawbleId、长计数、整型颜色、侦听器){
超级(标题、图标、监听器);
this.count=计数;
这个颜色=颜色;
}
公共长getCount(){
返回计数;
}
公共无效集合计数(长计数){
this.count=计数;
}
public int getColor(){
返回颜色;
}
公共void setColor(int-color){
这个颜色=颜色;
}
}
}
notifyDataSetChanged()方法工作不正常,有时调用getChildView,有时不调用,请帮助解决此问题。您正在将值更改为子项,但未在适配器内部设置
SubItem item = ((SubItem) adapter.getChild(i+1, 5)).setCount(unreadBox);
adapter.setChild(i+1,5,item);
adapter.notifyDataSetChanged();
将此添加到适配器中
@Override
public void setChild(int groupPosition, int childPosition,SubItem item) {
subItems.get(groupPosition).get(childPosition) = item;
}
它可能会帮助你!解决方法之一是折叠并展开用户看不到的可扩展列表视图项。他们中的任何一个都帮不了我:(((你自己尝试过/做过任何调试吗?我们不是通灵师…你能发布完整的适配器代码吗?)你有可扩展列表视图吗