Add Dynamic groups and childes in ExpandableListView in Android

package src.com;

import android.app.Activity;

import android.os.Bundle;

import android.app.ExpandableListActivity;

import android.content.Context;

import android.database.DataSetObserver;

import android.os.Bundle;

import android.util.Log;

import android.view.ContextMenu;

import android.view.ContextMenu.ContextMenuInfo;

import android.view.Gravity;

import android.view.LayoutInflater;

import android.view.MenuItem;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AbsListView;

import android.widget.BaseExpandableListAdapter;

import android.widget.CheckBox;

import android.widget.ExpandableListAdapter;

import android.widget.ExpandableListView;

import android.widget.ExpandableListView.ExpandableListContextMenuInfo;

import android.widget.ImageView;

import android.widget.LinearLayout;

import android.widget.TextView;

import android.widget.Toast;

public class Hookup extends ExpandableListActivity {

ExpandableListAdapter mAdapter;

Context mContext;

private String[] groups = { "BFBFBF", "Testing" };

private String[][] children = { { "M", "N" }, { "One", "Four", "Six" } };

private static final String TAG = "Hookup";

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

// Set up our adapter

mAdapter = new MyExpandableListAdapter(this);

setListAdapter(mAdapter);

registerForContextMenu(getExpandableListView());

}

@Override

public void onCreateContextMenu(ContextMenu menu, View v,

ContextMenuInfo menuInfo) {

menu.setHeaderTitle("Hookup Menu");

menu.add(0, 0, 0, R.string.hello);

}

public boolean onContextItemSelected(MenuItem item) {

System.out.println("Insidded onContextItemSelected");

// Intent intent = new Intent();

// intent.setClass(this, HookupMapView.class);

// startActivity(intent);

Log.i(TAG, "onContextItemSelected");

ExpandableListContextMenuInfo info = (ExpandableListContextMenuInfo) item

.getMenuInfo();

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

int type = ExpandableListView

.getPackedPositionType(info.packedPosition);

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;

}

public class MyExpandableListAdapter extends BaseExpandableListAdapter {

// Sample data set. children[i] contains the children (String[]) for

// groups[i].

// private String[] groups = { "Xxxxxxx", "yyyyyy near me" };

// private String[][] children = { { "A", "B", "C" },

// { "1", "2", "3" } };

public MyExpandableListAdapter(Context context) {

mContext = context;

}

public Object getChild(int groupPosition, int childPosition) {

Log.i(TAG, "getChild");

return children[groupPosition][childPosition];

}

public long getChildId(int groupPosition, int childPosition) {

Log.i(TAG, "getChildId");

return childPosition;

}

public int getChildrenCount(int groupPosition) {

Log.i(TAG, "getChildId");

return children[groupPosition].length;

}

public LinearLayout getGenericView(String string) {

Log.i(TAG, "getGenericView");

// Layout parameters for the ExpandableListView

AbsListView.LayoutParams lp = new AbsListView.LayoutParams(

ViewGroup.LayoutParams.FILL_PARENT, 64);

LinearLayout ll = new LinearLayout(mContext);

ImageView icon = new ImageView(mContext);

icon.setImageResource(R.drawable.icon);

icon.setPadding(35, 0, 0, 0);

ll.addView(icon);

TextView textView = new TextView(mContext);

// Center the text vertically

textView.setGravity(Gravity.CENTER_VERTICAL | Gravity.LEFT);

// Set the text starting position

textView.setPadding(36, 0, 0, 0);

// CheckBox cBox = new CheckBox(mContext);

ll.setLayoutParams(lp);

ll.addView(textView);

// ll.addView(cBox);

textView.setText(string);

// cBox.setClickable(true);

// CheckBox cb = new CheckBox(mContext);

// ll.addView(cb);

return ll;

}

public View getChildView(int groupPosition, int childPosition,

boolean isLastChild, View convertView, ViewGroup parent) {

Log.i(TAG, "getChildView");

// String myText =

// this.getChild(groupPosition,childPosition).toString();

// LinearLayout ll = getGenericView(myText+"BCD");

//textView.setText(getChild(groupPosition,childPosition).toString())

// ;

// return ll;

LayoutInflater layoutInflater = (LayoutInflater) mContext

.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

View v = layoutInflater.inflate(R.layout.bluetest_row, null);

TextView tt = (TextView) v.findViewById(R.id.text1);

String myText = this.getChild(groupPosition, childPosition)

.toString();

tt.setText(myText);

CheckBox cb = (CheckBox) v.findViewById(R.id.checkbox);

cb.setVisibility(View.VISIBLE);

ImageView icon = (ImageView) v.findViewById(R.id.rowicon);

icon.setImageResource(R.drawable.icon);

return v;

}

public Object getGroup(int groupPosition) {

Log.i(TAG, "getGroup");

return groups[groupPosition];

}

public int getGroupCount() {

Log.i(TAG, "getGroupCount");

return groups.length;

}

public long getGroupId(int groupPosition) {

Log.i(TAG, "getGroupId");

return groupPosition;

}

public View getGroupView(int groupPosition, boolean isExpanded,

View convertView, ViewGroup parent) {

Log.i(TAG, "getGroupView");

String myText = this.getGroup(groupPosition).toString();

return getGenericView(myText);

}

public boolean isChildSelectable(int groupPosition, int childPosition) {

Log.i(TAG, "isChildSelectable");

return true;

}

public boolean hasStableIds() {

Log.i(TAG, "hasStableIds");

return true;

}

public void registerDataSetObserver(DataSetObserver observer) {

}

}

}

bluetest_row.xml

android:layout_weight="1" android:background="#fafafa">

android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_weight="1"

/>

android:text="myTest"

/>