I am doing expandable list view with three levels.But the first level is right.But second and third level children are not correct.Actually I am converting json into expandable listview. my code is below main activity
public class MainActivity extends Activity
{
ExpandableListView explvlist;
TextView ui_hot = null;
int hot_number = 0;
// private ExpandListAdapter ExpAdapter;
private ArrayList<Group> ExpListItems;
private ExpandableListView ExpandList;
// private SliderLayout mDemoSlider;
Intent intent = null;
RequestQueue requestQueue1, requestQueue2;
int[] firstcatid = null,secondcatid = null;
String firsttitle[] = null,secondtitle[] = null;
int j = 0;
ArrayList<Group> list,list2,list3;
CustExpListview SecondLevelexplv;
ExpandableListView elv;
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
requestQueue1 = Volley.newRequestQueue(getApplicationContext());
JsonObjectRequest jsonObjectRequest = new JsonObjectRequest(Request.Method.GET, "http://www.fasr.com/cntrldata/ezproductfristcategory.php",
new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
try {
list = new ArrayList<Group>();
JSONArray ja = response.getJSONArray("hi");
JSONArray ja2 = response.getJSONArray("hi2");
JSONArray ja3 = response.getJSONArray("hi3");
firsttitle = new String[ja.length()];
firstcatid = new int[ja.length()];
JSONObject jsonObject2=null,jsonObject3=null,jsonObject;
for (int i = 0; i < ja.length(); i++) {
jsonObject = ja.getJSONObject(i);
// Log.e("hie",jsonObject2.getInt("second_category_id")+"");
//jsonObject3 = ja3.getJSONObject(i);
firstcatid[i] = jsonObject.getInt("first_category_id");
firsttitle[i] = jsonObject.getString("first_category_name");
}
secondcatid=new int[ja2.length()];
for(int i =0;i<ja2.length();i++){
jsonObject2 = ja2.getJSONObject(i);
secondcatid[i]=jsonObject2.getInt("second_category_id");
}
for(int i = 0;i<ja.length();i++){
Group gru = new Group();
gru.setName(firsttitle[i]);
list2 = new ArrayList<Group>();
for(int j=0;j<ja2.length();j++){
Group gru2 = new Group();
jsonObject2 = ja2.getJSONObject(j);
//Toast.makeText(getApplicationContext(),jsonObject2.getInt("second_category_id"),Toast.LENGTH_SHORT).show();
if(firstcatid[i]==jsonObject2.getInt("first_category_id")){
gru2.setName(jsonObject2.getString("second_category_name"));
list3= new ArrayList<Group>();
for(int k=0;k<ja3.length();k++){
Group gru3= new Group();
jsonObject3 = ja3.getJSONObject(k);
if(secondcatid[j]==jsonObject2.getInt("second_category_id")){
Log.e("hie", jsonObject2.getInt("second_category_id") + "");
gru3.setName(jsonObject3.getString("third_category_name"));
list3.add(gru3);
}
gru2.setItems(list3);
}
list2.add(gru2);
}
}
gru.setItems(list2);
list.add(gru);
}
// Toast.makeText(getApplicationContext(),url[2],Toast.LENGTH_SHORT).show();
//output.setText(data);
ExpListItems = list;
explvlist = (ExpandableListView)findViewById(R.id.ParentLevel);
explvlist.setAdapter(new ParentLevel(getApplicationContext(),ExpListItems,list2,list3));
//ExpAdapter = new ExpandListAdapter(getApplicationContext(), ExpListItems);
// ExpandList.setAdapter(ExpAdapter);
} catch (JSONException e) {
e.printStackTrace();
}
}
},
new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("Volley", error.toString());
}
}
);
requestQueue1.add(jsonObjectRequest);
}
public class ParentLevel extends BaseExpandableListAdapter {
private Context context;
private ArrayList<Group> groups,childgroup,childgroup2,a1;
@Override
public Object getChild(int groupPosition, int childPosition) {
ArrayList<Group> chList = groups.get(groupPosition).getItems();
return chList.get(childPosition);
}
public ParentLevel(Context context, ArrayList<Group> groups,ArrayList<Group> groups2,ArrayList<Group> groups3) {
this.context = context;
this.groups = groups;
this.childgroup=groups2;
this.childgroup2=groups3;
}
@Override
public long getChildId(int groupPosition, int childPosition) {
return childPosition;
}
@Override
public View getChildView(int groupPosition, int childPosition,
boolean isLastChild, View convertView, ViewGroup parent) {
Group child = (Group) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.group_item, null);
}
//child.setItems(childgroup);
//requestQueue1 = Volley.newRequestQueue(getApplicationContext());
SecondLevelexplv = new CustExpListview(MainActivity.this);
SecondLevelexplv.setAdapter(new SecondLevelAdapter(context, childgroup));
SecondLevelexplv.setGroupIndicator(null);
return SecondLevelexplv;
}
@Override
public int getChildrenCount(int groupPosition) {
ArrayList<Group> chList = groups.get(groupPosition).getItems();
if(!(chList==null))
return chList.size();
else return 0;
}
@Override
public Object getGroup(int groupPosition) {
return groups.get(groupPosition);
}
@Override
public int getGroupCount() {
return groups.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent){
Group group = (Group) getGroup(groupPosition);
if(convertView==null)
{
LayoutInflater inf = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inf.inflate(R.layout.group_item, null);
}
TextView tv = (TextView) convertView.findViewById(R.id.group_name);
tv.setPadding(10, 7, 7, 7);
tv.setText(group.getName());
ImageView imageView = (ImageView) convertView.findViewById(R.id.imageView);
if(!(group.getItems()==null))
{
if (!group.getItems().isEmpty()) {
if (isExpanded) {
tv.setTypeface(null, Typeface.BOLD);
imageView.setBackgroundResource(R.drawable.ic_action_minus);
} else {
imageView.setBackgroundResource(R.drawable.ic_action_add);
tv.setTypeface(null, Typeface.NORMAL);
}
} else imageView.setVisibility(View.INVISIBLE);
}
return convertView;
}
@Override
public boolean hasStableIds()
{
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition)
{
return true;
}
}
public class CustExpListview extends ExpandableListView
{
int intGroupPosition, intChildPosition, intGroupid;
public CustExpListview(Context context)
{
super(context);
}
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec)
{
widthMeasureSpec = MeasureSpec.makeMeasureSpec(960, MeasureSpec.AT_MOST);
heightMeasureSpec = MeasureSpec.makeMeasureSpec(600, MeasureSpec.AT_MOST);
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
}
}
public class SecondLevelAdapter extends BaseExpandableListAdapter {
int i = 0;
private Context context;
private ArrayList<Group> groups;
private int gr;
public SecondLevelAdapter(Context context, ArrayList<Group> groups) {
this.context = context;
this.groups = groups;
}
@Override
public Object getChild(int groupPosition, int childPosition) {
ArrayList<Group> chList = groups.get(groupPosition).getItems();
return chList.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) {
Group child = (Group) getChild(groupPosition, childPosition);
if (convertView == null) {
LayoutInflater infalInflater = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.group_item, null);
}
TextView tv = (TextView) convertView.findViewById(R.id.group_name);
tv.setText(child.getName().toString());
//Toast.makeText(context,child.getName().toString()+"hi",Toast.LENGTH_SHORT).show();
return convertView;
}
@Override
public int getChildrenCount(int groupPosition) {
ArrayList<Group> chList = groups.get(groupPosition).getItems();
if (!(chList == null))
return chList.size();
else return 0;
}
@Override
public Object getGroup(int groupPosition) {
return groups.get(groupPosition);
}
@Override
public int getGroupCount() {
return groups.size();
}
@Override
public long getGroupId(int groupPosition) {
return groupPosition;
}
@Override
public View getGroupView(int groupPosition, boolean isExpanded,
View convertView, ViewGroup parent) {
Group group = (Group) getGroup(groupPosition);
if (convertView == null) {
LayoutInflater inf = (LayoutInflater) context
.getSystemService(context.LAYOUT_INFLATER_SERVICE);
convertView = inf.inflate(R.layout.group_item, null);
}
TextView tv = (TextView) convertView.findViewById(R.id.group_name);
tv.setText(group.getName());
ImageView imageView = (ImageView) convertView.findViewById(R.id.imageView);
if (!(group.getItems() == null)) {
if (!group.getItems().isEmpty()) {
if (isExpanded) {
tv.setTypeface(null, Typeface.BOLD);
imageView.setBackgroundResource(R.drawable.ic_action_minus);
} else {
imageView.setBackgroundResource(R.drawable.ic_action_add);
tv.setTypeface(null, Typeface.NORMAL);
}
} else imageView.setVisibility(View.INVISIBLE);
}
return convertView;
}
@Override
public boolean hasStableIds() {
return true;
}
@Override
public boolean isChildSelectable(int groupPosition, int childPosition) {
return true;
}
}
}
What is I got is this
