Clash Royale CLAN TAG#URR8PPP

Loop ExpandableListview children for each parent

I am trying to assign each of the children in my expandable listview to its proper parents, but I ended up assigning all child data to each parent in the list view.

This is my activity:

api.USER_VM_LIST(UserId)
.observeOn(AndroidSchedulers.mainThread())
.subscribeOn(Schedulers.io())
.subscribe(new Observer<UserVmList>()
@Override
public void onCompleted()



@Override
public void onError(Throwable e)



@Override
public void onNext(UserVmList userVmList)



listVmTitle = new ArrayList<>();
listHashMap = new HashMap<>();
List<DetailsOfVmObject> detailsOfVmObjects = new ArrayList<>();

for (int i = 0; i < userVmList.getVm_data().size(); i++)


//loop Listview RowTitle
VmObject vmObject = new VmObject(userVmList.getVm_data().get(i).getHostname(),
userVmList.getVm_data().get(i).getStatus(), userVmList.getVm_data().get(i).getImage());
listVmTitle.add(vmObject);

//Loop Listview RowChildren
DetailsOfVmObject details = new DetailsOfVmObject(userVmList.getVm_data().get(i).getFlavor(),
userVmList.getVm_data().get(i).getIp_vm());
detailsOfVmObjects.add(details);

//loop hashmap
listHashMap.put(listVmTitle.get(i),detailsOfVmObjects);




LayoutInflater layoutInflater = getLayoutInflater();
ViewGroup header = (ViewGroup)layoutInflater.inflate(R.layout.listview_header,expandableListView,false);
expandableListView.addHeaderView(header);


ExpandableListAdapter adapter = new ExpandableListAdapter(mContext, listVmTitle,listHashMap,detailsOfVmObjects);
expandableListView.setAdapter(adapter);

expandableListView.setOnGroupClickListener((parent, v, groupPosition, id) -> false);


);
}


Here is my Expandablelistadapter definition:

Expandablelistadapter

private Context mContext;
private List<VmObject> listVmTitle;
private HashMap<VmObject, List<DetailsOfVmObject>> listHashMap;
private List<DetailsOfVmObject> detailsOfVmObjects;

public ExpandableListAdapter(Context mContext, List<VmObject> listVmTitle, HashMap<VmObject, List<DetailsOfVmObject>> listHashMap,
List<DetailsOfVmObject> detailsOfVmObjects )
this.mContext = mContext;
this.listVmTitle = listVmTitle;
this.listHashMap = listHashMap;
this.detailsOfVmObjects = detailsOfVmObjects;


@Override
public int getGroupCount()
return listVmTitle.size();


@Override
public int getChildrenCount(int groupPosition)
return listHashMap.get(listVmTitle.get(groupPosition)).size();



@Override
public Object getGroup(int groupPosition)
return listVmTitle.get(groupPosition);


@Override
public Object getChild(int groupPosition, int childPosition)
return listHashMap.get(listVmTitle.get(groupPosition)).get(childPosition);


@Override
public long getGroupId(int groupPosition)
return groupPosition;


@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 convertView, ViewGroup parent)
final String VmHostName = listVmTitle.get(groupPosition).getHostName();
final String VmStatus = listVmTitle.get(groupPosition).getStatus();
final String VmOs = listVmTitle.get(groupPosition).getOs();

if (convertView == null)
LayoutInflater layoutInflater = (LayoutInflater)this.mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.expandable_row,null);


TextView tvHostname = (TextView) convertView.findViewById(R.id.FirstText1);
TextView tvStatus = (TextView) convertView.findViewById(R.id.SecondText2);
TextView tvOs = (TextView) convertView.findViewById(R.id.ThirdText3);

tvHostname.setText(VmHostName);
tvStatus.setText(VmStatus);
tvOs.setText(VmOs);

return convertView;



@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent)

String Flavor = detailsOfVmObjects.get(childPosition).getFlavor();
String Ip = detailsOfVmObjects.get(childPosition).getIpAddress();

if (convertView == null)

LayoutInflater layoutInflater = (LayoutInflater)this.mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.expandable_row_children,null);



TextView TvFlavor = (TextView) convertView.findViewById(R.id.expandable1);
TextView TvIp = (TextView) convertView.findViewById(R.id.expandable2);

TvFlavor.setText(Flavor);
TvIp.setText(Ip);

return convertView;


@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
return true;



screenshot of the listview oin my current state :

1 Answer
1

Assume that the hostName is different between groups, try to prepare your data lists like below:

List<VmObject> listVmTitle = new ArrayList<>();
HashMap<VmObject, List<DetailsOfVmObject>> listHashMap = new HashMap<>();

for (int i = 0; i < userVmList.getVm_data().size(); i++)
VmObject vmObject = new VmObject(userVmList.getVm_data().get(i).getHostname(),
userVmList.getVm_data().get(i).getStatus(), userVmList.getVm_data().get(i).getImage());

List<DetailsOfVmObject> detailsOfVmObjects;
for (int j = 0; j < listVmTitle.size(); j++)
if (listVmTitle.get(j).getHostName().equals(vmObject.getHostName())) // Group exists
detailsOfVmObjects = listHashMap.get(vmObject);
else // Group not exists
listVmTitle.add(vmObject); // Add new group
detailsOfVmObjects = new ArrayList<>(); // Create child list for the group
listHashMap.put(listVmTitle.get(i), detailsOfVmObjects);

DetailsOfVmObject details = new DetailsOfVmObject(userVmList.getVm_data().get(i).getFlavor(),
userVmList.getVm_data().get(i).getIp_vm());
detailsOfVmObjects.add(details);




Please note that now only two lists are needed to create the expandable list view, so make changes accordingly. Also in adapter change:

@Override
public View getChildView(int groupPosition, int childPosition, boolean isLastChild, View convertView, ViewGroup parent)

DetailsOfVmObject childObject = (DetailsOfVmObject)getChild(groupPosition, childPosition);
String Flavor = childObject.getFlavor();
String Ip = childObject.getIpAddress();

if (convertView == null)

LayoutInflater layoutInflater = (LayoutInflater)this.mContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = layoutInflater.inflate(R.layout.expandable_row_children,null);



TextView TvFlavor = (TextView) convertView.findViewById(R.id.expandable1);
TextView TvIp = (TextView) convertView.findViewById(R.id.expandable2);

TvFlavor.setText(Flavor);
TvIp.setText(Ip);

return convertView;



Hope that helps!

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