Retrieving ChildItem from ExpandableListView?
android, expandablelistadapter, expandablelistview
Solution
Multiple issues:
The child item needs to be selectable for the click to work. Change your adapter's `isChildSelectable()` to return `true`.
Remove `android:clickable="true"` from your `childrow.xml` root `LinearLayout`. (Or alternatively, add a click handler to the `LinearLayout` itself.)
Implement `getGroup()` and `getChild()` to return actual objects instead of `null` and `getGroupId()` and `getChildId()` to return locally unique identifiers. That is, child ids within a group need to be unique but they do not need to be unique across groups. In your case, returning child/group position as an id will do.
Problem
I am trying to retrieve childitem when user clicked on the childitem of ExpandableListView.For that my Activity and ListAdapter classes are as follows.. MainActivity:- ``` public class MainActivity extends Activity { NewAdapter mNewAdapter; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); ExpandableListView expandbleLis = (ExpandableListView) findViewById(R.id.expandableListView); expandbleLis.setDividerHeight(2); expandbleLis.setGroupIndicator(null); expandbleLis.setClickable(true); setGroupData(); setChildGroupData(); mNewAdapter = new NewAdapter(groupItem, childItem); mNewAdapter .setInflater( (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE), this); expandbleLis.setAdapter(mNewAdapter); expandbleLis.setOnGroupClickListener(new OnGroupClickListener() { @Override public boolean onGroupClick(ExpandableListView parent, View v, int groupPosition, long id) { Toast.makeText(MainActivity.this, "GroupItem Clicked" + groupItem.get(groupPosition), Toast.LENGTH_LONG).show(); return false; } }); expandbleLis.setOnChildClickListener(new OnChildClickListener() { @Override public boolean onChildClick(ExpandableListView parent, View v, int groupPosition, int childPosition, long id) { Toast.makeText(MainActivity.this, "ChildItem Clicked", Toast.LENGTH_LONG).show(); return false; } }); } public void setGroupData() { groupItem.add("TechNology"); groupItem.add("Mobile"); groupItem.add("Manufacturer"); groupItem.add("Extras"); } ArrayList<String> groupItem = new ArrayList<String>(); ArrayList<Object> childItem = new ArrayList<Object>(); public void setChildGroupData() { /** * Add Data For TecthNology */ ArrayList<String> child = new ArrayList<String>(); child.add("Java"); child.add("Drupal"); child.add(".Net Framework"); child.add("PHP"); childItem.add(child); /** * Add Data For Mobile */ child = new ArrayList<String>(); child.add("Android"); child.add("Window Mobile"); child.add("iPHone"); child.add("Blackberry"); childItem.add(child); /** * Add Data For Manufacture */ child = new ArrayList<String>(); child.add("HTC"); child.add("Apple"); child.add("Samsung"); child.add("Nokia"); childItem.add(child); /** * Add Data For Extras */ child = new ArrayList<String>(); child.add("Contact Us"); child.add("About Us"); child.add("Location"); child.add("Root Cause"); childItem.add(child); } } ``` ListAdapter:- ``` public class NewAdapter extends BaseExpandableListAdapter { public ArrayList<String> groupItem, tempChild; public ArrayList<Object> Childtem = new ArrayList<Object>(); public LayoutInflater minflater; public Activity activity; public NewAdapter(ArrayList<String> grList, ArrayList<Object> childItem) { groupItem = grList; this.Childtem = childItem; } public void setInflater(LayoutInflater mInflater, Activity act) { this.minflater = mInflater; activity = act; } @Override public Object getChild(int groupPosition, int childPosition) { return null; } @Override public long getChildId(int groupPosition, int childPosition) { return 0; } @Override public View getChildView(int groupPosition, final int childPosition, boolean isLastChild, View convertView, ViewGroup parent) { tempChild = (ArrayList<String>) Childtem.get(groupPosition); TextView text = null; if (convertView == null) { convertView = minflater.inflate(R.layout.childrow, null); } text = (TextView) convertView.findViewById(R.id.textView1); text.setText(tempChild.get(childPosition)); return convertView; } @Override public int getChildrenCount(int groupPosition) { return ((ArrayList<String>) Childtem.get(groupPosition)).size(); } @Override public Object getGroup(int groupPosition) { return null; } @Override public int getGroupCount() { return groupItem.size(); } @Override public void onGroupCollapsed(int groupPosition) { super.onGroupCollapsed(groupPosition); } @Override public void onGroupExpanded(int groupPosition) { super.onGroupExpanded(groupPosition); } @Override public long getGroupId(int groupPosition) { return 0; } @Override public View getGroupView(final int groupPosition, boolean isExpanded, View convertView, ViewGroup parent) { // isExpanded = false; if (convertView == null) { convertView = minflater.inflate(R.layout.grouprow, null); } ((CheckedTextView) convertView).setText(groupItem.get(groupPosition)); ((CheckedTextView) convertView).setChecked(isExpanded); return convertView; } @Override public boolean hasStableIds() { return false; } @Override public boolean isChildSelectable(int groupPosition, int childPosition) { return true; } } ``` I have Googled tried this but no use i'm not getting child item from it. please help in doing this. After trying many possible solutions i'm posting this please try to help me don't down vote if you are voting down say possible solution then i'll agree..