You shouldn't manually call getChildView method. The ExpandableListView will do that when it needs to. You should focus on ensuring that your implementation of getChildView makes sense, currently it calls itself ad-infinitum (which doesn't make sense). Then you're just left to manipulate the view as you need before returning it from getChildView. Just take care not to spend/waste too much time within getChildView method as Android won't be happy (ANR thrown, if I recall correctly).
On Dec 17, 3:14 pm, "pramod.deore" <[email protected]> wrote: > Here my class in extends from ExpandableListActivity. therefore I have > implemnts ExpandableListAdapter and override getChildView(int > groupPosition, int childPosition, boolean isLastChild, View > convertView, ViewGroup parent). > > But when I from where should I call this method and what parameter > should I pass at the time of calling this method. My code is like: > > SQLiteDatabase sampleDB = null; > String SAMPLE_DBNAME = "NewHomeAutoDataBase"; > String ROOM_TABLE_NAME = "RoomTable"; > String SWITCH_TABLE_NAME = "SwitchTable"; > int idVal; > > private ExpandableListAdapter mAdapter; > > @Override > public void onCreate(Bundle savedInstanceState) > { > super.onCreate(savedInstanceState); > sampleDB = this.openOrCreateDatabase(SAMPLE_DBNAME, > MODE_PRIVATE, null); > > Cursor groupCursor = sampleDB.rawQuery ("SELECT _id, > RoomName ,SwitchFullName FROM SwitchTable GROUP BY RoomName",null); > System.out.println ("#######"+groupCursor.getCount()); > System.out.println ("_____"+groupCursor.getPosition()); > System.out.println (groupCursor.getColumnIndex("RoomName")); > groupCursor.getColumnIndexOrThrow("_id"); > > // Set up our adapter > mAdapter = new MyExpandableListAdapter(groupCursor, > this, > android.R.layout.simple_expandable_list_item_1, > android.R.layout.simple_expandable_list_item_2, > new String[] {"RoomName"}, // Name for group layouts > new int[] {android.R.id.text1}, > new String[] {"SwitchFullName"}, // Number for child > layouts > new int[] {android.R.id.text1}); > > setListAdapter(mAdapter); > > System.out.println ("%%%% > %"+getExpandableListAdapter().getGroupCount()); > System.out.println ("::::::::::::::"+this.getSelectedId()); > //getChildView();where should I call this and how parameter > pass to this? > > } > > @Override > public View getChildView(int groupPosition, int childPosition, > boolean isLastChild, View convertView, ViewGroup parent) > { > > View v = getChildView(groupPosition, childPosition, isLastChild, > convertView, parent); > > return v; > > } > > @Override > public void onGroupExpand(int groupPosition) > { > System.out.println ("Inside onGroupExpand~~~~"); > // TODO Auto-generated method stub > super.onGroupExpand(groupPosition); > idVal = groupPosition; > System.out.println ("``````````````"); > // System.out.println > ("``````````````"+getString(groupPosition)); > > Toast.makeText(this, "Group Clicked on pos = "+ > groupPosition, > Toast.LENGTH_SHORT).show(); > > } > > public class MyExpandableListAdapter extends > SimpleCursorTreeAdapter > { > > public MyExpandableListAdapter(Cursor cursor, Context context, > int groupLayout, > int childLayout, String[] groupFrom, int[] groupTo, > String[] childrenFrom, > int[] childrenTo){ > super(context, cursor, groupLayout, groupFrom, groupTo, > childLayout, childrenFrom, > childrenTo); > } > > @Override > protected Cursor getChildrenCursor(Cursor groupCursor) > { > System.out.println ("Inside getChildrenCursor"); > String roomname = > groupCursor.getString(groupCursor.getColumnIndex("RoomName")); > System.out.println ("@@#...@#@#...@#"+idVal); > Cursor groupCursor1 = sampleDB.rawQuery ("SELECT > _id,SwitchFullName FROM SwitchTable where RoomName='"+roomname > +"'",null); > > return groupCursor1; > } > > } > > On Dec 17, 8:28 am, "pramod.deore" <[email protected]> wrote: > > > TreKing, Thanks for quick response. > > > On Dec 17, 8:11 am, TreKing <[email protected]> wrote: > > > > On Thu, Dec 16, 2010 at 9:00 PM, pramod.deore > > > <[email protected]>wrote: > > > > > TreKing, Thanks .Normally we do this by changing in xml file but here > > > > there > > > > is no xml file. so how to do this. > > > > Oh, durf - didn't read closely enough. > > > > Well then, try overriding getChildeView and getGroupView, calling super to > > > do the work, get the returned View, change the properties on it, then > > > return > > > it. > > > > ------------------------------------------------------------------------------------------------- > > > TreKing <http://sites.google.com/site/rezmobileapps/treking> - Chicago > > > transit tracking app for Android-powered devices -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
