Android基于XMPP Smack Openfire下学习开发IM对分组、好友和头像等一些操作

一、查询所有分组
通过Roster来获取所有分组，Roster可以通过connection.getRoster()来得到。

[java]
 /**
 * 获取所有组
 *
 * @param roster
 * @return 所有组集合
 */
 public static List<RosterGroup> getGroups(Roster roster) {
 List<RosterGroup> grouplist = new ArrayList<RosterGroup>();
 Collection<RosterGroup> rosterGroup = roster.getGroups();
 Iterator<RosterGroup> i = rosterGroup.iterator();
 while (i.hasNext()) {
 grouplist.add(i.next());
 }
 return grouplist;
 }

/**
* 获取所有组
*
* @param roster
* @return 所有组集合
*/
public static List<RosterGroup> getGroups(Roster roster) {
 List<RosterGroup> grouplist = new ArrayList<RosterGroup>();
 Collection<RosterGroup> rosterGroup = roster.getGroups();
 Iterator<RosterGroup> i = rosterGroup.iterator();
 while (i.hasNext()) {
 grouplist.add(i.next());
 }
 return grouplist;
}

二、添加分组

也一样通过roster来添加分组，groupName 为分组名。

[java]
SPAN style="WHITE-SPACE: pre"> /**
 * 添加一个分组
 *
 * @param roster
 * @param groupName
 * @return
 */
 public static boolean addGroup(Roster roster, String groupName) {
 try {
 roster.createGroup(groupName);
 return true;
 } catch (Exception e) {
 e.printStackTrace();
 return false;
 }
 }

/**
* 添加一个分组
*
* @param roster
* @param groupName
* @return
*/
public static boolean addGroup(Roster roster, String groupName) {
  try {
   roster.createGroup(groupName);
   return true;
  } catch (Exception e) {
   e.printStackTrace();
   return false;
  }
}

三、查询某个组里面的所有好友
很简单不解释...

[java]
 /**
 * 获取某个组里面的所有好友
 *
 * @param roster
 * @param groupName
 * 组名
 * @return
 */
 public static List<RosterEntry> getEntriesByGroup(Roster roster,
 String groupName) {
 List<RosterEntry> Entrieslist = new ArrayList<RosterEntry>();
 RosterGroup rosterGroup = roster.getGroup(groupName);
 Collection<RosterEntry> rosterEntry = rosterGroup.getEntries();
 Iterator<RosterEntry> i = rosterEntry.iterator();
 while (i.hasNext()) {
 Entrieslist.add(i.next());
 }
 return Entrieslist;
 }

/**
* 获取某个组里面的所有好友
*
* @param roster
* @param groupName
* 组名
* @return
*/
public static List<RosterEntry> getEntriesByGroup(Roster roster,
 String groupName) {
 List<RosterEntry> Entrieslist = new ArrayList<RosterEntry>();
 RosterGroup rosterGroup = roster.getGroup(groupName);
 Collection<RosterEntry> rosterEntry = rosterGroup.getEntries();
 Iterator<RosterEntry> i = rosterEntry.iterator();
 while (i.hasNext()) {
 Entrieslist.add(i.next());
 }
 return Entrieslist;
}

四、查询所有好友信息

很简单

[java]
 /**
 * 获取所有好友信息
 *
 * @param roster
 * @return
 */
 public static List<RosterEntry> getAllEntries(Roster roster) {
 List<RosterEntry> Entrieslist = new ArrayList<RosterEntry>();
 Collection<RosterEntry> rosterEntry = roster.getEntries();
 Iterator<RosterEntry> i = rosterEntry.iterator();
 while (i.hasNext()) {
 Entrieslist.add(i.next());
 }
 return Entrieslist;
 }

/**
* 获取所有好友信息
*
* @param roster
* @return
*/
public static List<RosterEntry> getAllEntries(Roster roster) {
 List<RosterEntry> Entrieslist = new ArrayList<RosterEntry>();
 Collection<RosterEntry> rosterEntry = roster.getEntries();
 Iterator<RosterEntry> i = rosterEntry.iterator();
 while (i.hasNext()) {
 Entrieslist.add(i.next());
 }
 return Entrieslist;
}

五、获取用户VCard信息

[java]
 /**
 * 获取用户VCard信息
 *
 * @param connection补充：移动开发 , Android ,