How to get onChildClick value from expandablelistview in android?

Question

I am working on a project with parsing JSON from url to ExpandableListView. Depending on the \"status\" tag value (active or pending) , will be placing records accordingly to to

Answer 1

The below isn't perfect but it works. It might be helpful to those who need to access the view without overriding the onChildClick method such as a custom dialog with an ExpandableListView.

    ExpandableListView ellQuickKeys = (ExpandableListView) layout.findViewById(R.id.ellQuickKeys);

    SimpleExpandableListAdapter expListAdapter =
            new SimpleExpandableListAdapter(
                            this,
                            createGroupList(),                              // Creating group List.
                            R.layout.group_row,                             // Group item layout XML.                       
                            new String[] { "Group Item" },  // the key of group item.
                            new int[] { R.id.row_name },    // ID of each group item.-Data under the key goes into this TextView.                                   
                            createChildList(),                              // childData describes second-level entries.
                            R.layout.child_row,                             // Layout for sub-level entries(second level).
                            new String[] {"Sub Item"},              // Keys in childData maps to display.
                            new int[] { R.id.lblChildText}             // Data under the keys above go into these TextViews.
                    );

    ellQuickKeys.setOnChildClickListener(new OnChildClickListener() {    
        public boolean onChildClick(ExpandableListView parent, View v, int groupPosition,int childPosition,long id) {
            Log.d("Selected text: " + ((TextView) v.findViewById(R.id.lblChildText)).getText());

            return false;
        }
    });
    ellQuickKeys.setAdapter(expListAdapter);

child_row.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="wrap_content">

<TextView android:id="@+id/lblChildText"
     android:paddingLeft="50dp"
     android:focusable="false"
     android:textSize="18dp"
     android:textStyle="normal"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"/>

</LinearLayout>

Answer 2

Try This:

@Override
public boolean onContextItemSelected(MenuItem item) {
    ExpandableListContextMenuInfo info = (ExpandableListContextMenuInfo) item.getMenuInfo();

    String title = ((TextView) info.targetView).getText().toString();

    int type = ExpandableListView.getPackedPositionType(info.packedPosition);
    System.out.println(" ----- " + type);
    if (type == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
        int groupPos = ExpandableListView.getPackedPositionGroup(info.packedPosition);
        int childPos = ExpandableListView.getPackedPositionChild(info.packedPosition);
        Toast.makeText(this,title + ": Child " + childPos + " clicked in group "+ groupPos, Toast.LENGTH_SHORT).show();
        return true;
    } else if (type == ExpandableListView.PACKED_POSITION_TYPE_GROUP) {
        int groupPos = ExpandableListView.getPackedPositionGroup(info.packedPosition);
        Toast.makeText(this, title + ": Group " + groupPos + " clicked",Toast.LENGTH_SHORT).show();
        return true;
    }

    return false;
}

Answer 3

You have to use Adapter's getChild(groupPosition, childPosition) method to retrieve the instance of child and the cast it to your Map and get it working.

@Override
public boolean onChildClick(ExpandableListView parent, View v,
        int groupPosition, int childPosition, long id) {

    Toast.makeText(this, (String)((Map<String, String>)
                adapter.getChild(groupPosition, childPosition)).get("lalit"),
                                                      Toast.LENGTH_LONG).show();
    return super.onChildClick(parent, v, groupPosition, childPosition, id);
}