public String searchContactByName(String name) // name is ContactName
	{
		String PrimaryEmail= "";
		try
		{
			name = name.trim();

			if(!name.equals(""))
			{
			 Uri uri = ContactsContract.Contacts.CONTENT_URI;//ContactsContract.CommonDataKinds.Phone.CONTENT_URI;

			 String whereName =  ContactsContract.Contacts.DISPLAY_NAME + " =? "; //ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME + " =? ";
			 String[] whereNameParams = {name};

			 Cursor cursor = activity.managedQuery(uri, null, whereName, whereNameParams, null);
			 if(cursor!=null)
			 {
				 if(cursor.moveToFirst())
				 {
					 String ContactName = ContactsContract.Contacts._ID; //ContactsContract.CommonDataKinds.Phone.CONTACT_ID;
					 int index = cursor.getColumnIndex(ContactName);
					 if(index!=-1)
					 {
						 String CONTACT_ID = cursor.getString(index);
						 PrimaryEmail = getPrimaryEmail(CONTACT_ID);
					 }
				 }
			 }
			}
		}
		catch (Exception e)
		{
           e.printStackTrace();
		}
return PrimaryEmail;
}

public String getPrimaryEmail(String _id){
String emailAddress = "";
String whereName = ContactsContract.Data.CONTACT_ID + " = ?";
        String[] whereNameParams = { String.valueOf(_id) };

    	Cursor nameCur = contentResolver.query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, whereName, whereNameParams, null);
        //

        if(nameCur!=null)
        {
          if(nameCur.moveToFirst())
          {

        		emailAddress = nameCur.getString(nameCur.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));

}
}
return emailAddress ;
}