［XMPP］iOS聊天软件学习笔记［三］

今天做了好友界面，其实xmpp内部已经写好很多扩展模块，所以使用起来还是很方便的

开发时间：五天（工作时间）

开发工具：xcode6

开发平台：iOS8

XMPP框架：XMPPFramework

git clone https://github.com/robbiehanson/XMPPFramework.git

界面设计：使用StoryBoard

github地址：https://github.com/hjandyz/XMPP

1.每一个模块创建以后都需要激活，比如自动连接模块

//自动连接模块

_reconnect = [[XMPPReconnect alloc] init];

[_reconnect activate:_XMPPStream];

2.CoreData 的用法

- (void)loadFriends

{

//1.上下文关联数据库

NSManagedObjectContext *context = [HJXMPPTool sharedHJXMPPTool].rosterSrorage.mainThreadManagedObjectContext;

//2.创建FetchRequest请求

NSFetchRequest *fetchRequest = [NSFetchRequest fetchRequestWithEntityName:@"XMPPUserCoreDataStorageObject"];

//3.过滤和排序

//当年登陆用户的好友

NSString *jid = [HJUserInfo sharedHJUserInfo].jid;

NSPredicate *pre = [NSPredicate predicateWithFormat:@"streamBareJidStr = %@",jid];

fetchRequest.predicate = pre;

//排序

NSSortDescriptor *sort = [NSSortDescriptor sortDescriptorWithKey:@"displayName" ascending:YES];

fetchRequest.sortDescriptors = @[sort];

//4.执行请求

_resultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest managedObjectContext:context sectionNameKeyPath:nil cacheName:nil];

_resultsController.delegate = self;

NSError *err = nil;

[_resultsController performFetch:&err];

HJLog(@"%@",err);

}

3.销毁的方法也很重要

#pragma mark 销毁

- (void)teardownXmpp

{

//停止模块

[_XMPPStream removeDelegate:self];

[_reconnect deactivate];

[_avatar deactivate];

[_vCard deactivate];

[_roster deactivate];

//断块连接

[_XMPPStream disconnect];

//清空资源

_reconnect = nil;

_vCard = nil;

_vCardStorage = nil;

_avatar = nil;

_XMPPStream = nil;

_roster = nil;

_rosterSrorage = nil;

}

4.添加好友的方法

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

NSString *user = textField.text;

if (![textField isTelphoneNum]) {

[self showAlert:@"请输入正确的手机号码"];

return YES;

}

//判断是否自己或者好友已经存在

if ([user isEqualToString:[HJUserInfo sharedHJUserInfo].user]) {

[self showAlert:@"不能添加自己"];

}

XMPPJID *friendJid = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@%@", user, DomainKey]];

if([[HJXMPPTool sharedHJXMPPTool].rosterSrorage userExistsWithJID:friendJid xmppStream:[HJXMPPTool sharedHJXMPPTool].XMPPStream]){

[self showAlert:@"已经是你的好友了"];

}

[[HJXMPPTool sharedHJXMPPTool].roster subscribePresenceToUser:friendJid];

return YES;

}

5.删除好友的方法

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath

{

if (editingStyle == UITableViewCellEditingStyleDelete) {

XMPPUserCoreDataStorageObject *user = _resultsController.fetchedObjects[indexPath.row];

XMPPJID *jid = user.jid;

[[HJXMPPTool sharedHJXMPPTool].roster removeUser:jid];

}

}

剩下的就不一一讲了，具体可以看代码

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