XMPP开发之代码篇

上一篇讲了XMPP的服务器和数据的配置，现在说一下代码。在写代码之前我们需要打开我们配置好的服务器，至于怎么打开可以看上一篇文章。

1、使用cocoapods导入pod 'XMPPFramework'

2、新建一个PCH文件，导入一些头文件，可以直接copy下面的。（如何配置pch文件路径不懂得可以问我）

#import

#ifndef __IPHONE_3_0

#warning "This project uses features only available in iOS SDK 3.0 and later."

#endif

#ifdef __OBJC__

#import

#import

#import

#import

#import

#import

#define HTTPSERVER @"你的服务器域名，也就是.local结尾的"

#define MY_DOMAIN @"127.0.0.1"

#endif

3、到AppDelegate里面注册XMPP

.h文件

//导入需要用到的头文件

#import

#import

#import

#import

#import

//设置XMPP流属性和coredata属性

@property(nonatomic,strong)XMPPStream*xmppStream;

@property(strong,nonatomic)NSManagedObjectContext*xmppManagedObjectContext;

@property(strong,nonatomic)NSManagedObjectContext*xmppRosterManagedObjectContext; 

.m文件

//设置全局变量

XMPPReconnect*xmppReconnect;//重新连接

XMPPMessageArchiving* xmppMessageArchiving;//消息保存

//把请求的数据添加到CoreDate中

XMPPMessageArchivingCoreDataStorage* messageStorage;

XMPPRoster*xmppRoster;

//好友列表保存

XMPPRosterCoreDataStorage*xmppRosterStorage;

- (BOOL)application:(UIApplication*)application didFinishLaunchingWithOptions:(NSDictionary*)launchOptions {

// Override point for customization after application launch.

[self xmppInit];

return YES;

}

//初始化XMPP

-(void)xmppInit{

self.xmppStream= [[XMPPStream alloc] init];//创建xmppstream

xmppReconnect= [[XMPPReconnect alloc] init];//创建重写连接组件

[xmppReconnect activate:self.xmppStream];//使组件生效

//创建消息保存策略（规则，规定）

messageStorage= [XMPPMessage ArchivingCoreDataStorage sharedInstance];

//用消息保存策略创建消息保存组件

xmppMessageArchiving= [[XMPPMessage Archiving alloc]initWithMessageArchivingStorage:messageStorage];

//使组件生效

[xmppMessageArchiving activate:self.xmppStream];

//提取消息保存组件的coreData上下文

self.xmppManagedObjectContext=messageStorage.mainThreadManagedObjectContext;

xmppRosterStorage= [[XMPPRosterCoreDataStorage alloc]init];

xmppRoster= [[XMPPRoster alloc]initWithRosterStorage:xmppRosterStorage];

//自动获取用户列表

xmppRoster.autoFetchRoster=YES;

xmppRoster.autoAcceptKnownPresenceSubscriptionRequests=YES;

[xmppRoster activate:self.xmppStream];

self.xmppRosterManagedObjectContext=xmppRosterStorage.mainThreadManagedObjectContext;

}

4、布局登陆UI，这里就不给出代码了。

5、再登陆的控制器里面，添加代理XMPPStreamDelegate，然后初始化XMPP

//初始化XMPP

-(void)initXMPP{

UIApplication*application = [UIApplicationsharedApplication];

iddelegate = [applicationdelegate];

self.xmppStream= [delegatexmppStream];

[self.xmppStreamaddDelegate:selfdelegateQueue:dispatch_get_main_queue()];

}

6、验证登陆信息

//验证账号和密码

-(void)xmppConnect{

if(![_loginView.nameTF.text isEqualToString:@""] && ![_loginView.pwdTF.text isEqualToString:@""]) {

XMPPJID*jid = [XMPPJID jidWithUser:_loginView.nameTF.text domain:MY_DOMAINresource:@"iPhone"];

[self.xmppStreamsetMyJID:jid];

NSError*error =nil;

[self.xmppStream connectWithTimeout:4error:&error];

if(error) {

NSLog(@"链接出错：%@",[error localizedDescription]);

}

error =nil;

[self.xmppStream authenticateWithPassword:_loginView.pwdTF.texterror:&error];

if(error) {

NSLog(@"认证错误：%@",[error localizedDescription]);

}

}else{

NSLog(@"用户名、密码不能为空");

}

}

//验证成功后转跳到好友列表

-(void)xmppStreamDidAuthenticate:(XMPPStream*)sender{

NSLog(@"登录成功");

XMPPPresence*pre = [XMPPPresencepresence];

[self.xmppStreamsendElement:pre];

UIStoryboard*storyboard = [UIStoryboardstoryboardWithName:@"Main"bundle:nil];

FriendTableViewController*friendTVC = [storyboardinstantiateViewControllerWithIdentifier:@"FriendTableViewController"];

[self.navigationControllerpushViewController:friendTVCanimated:NO];

}

//登陆失败执行该方法

-(void)xmppStream:(XMPPStream*)sender didNotAuthenticate:(DDXMLElement*)error{

NSLog(@"认证失败");

}

7、好友列表的获取

//导入头文件，遵循代理

#import

#import

#import

@interface FriendTableViewController()

//确认代理获取好友数据

-(void)refrash{

UIApplication*application = [UIApplicationsharedApplication];

iddelegate = [applicationdelegate];

self.xmppRosterManagedObjectContext= [delegatexmppRosterManagedObjectContext];

NSFetchRequest*request = [[NSFetchRequestalloc]initWithEntityName:NSStringFromClass([XMPPUserCoreDataStorageObjectclass])];

NSSortDescriptor*sortD = [NSSortDescriptorsortDescriptorWithKey:@"jidStr"ascending:YES];

[requestsetSortDescriptors:@[sortD]];

//获取FRC

self.fetchedResultsController= [[NSFetchedResultsControlleralloc]initWithFetchRequest:requestmanagedObjectContext:self.xmppRosterManagedObjectContextsectionNameKeyPath:nilcacheName:nil];

self.fetchedResultsController.delegate=self;

NSError*error =nil;

if(![self.fetchedResultsControllerperformFetch:&error]) {

NSLog(@"%s%@",__FUNCTION__,[errorlocalizedDescription]);

}

[self.tableViewreloadData];

}

//获取组数

- (NSInteger)numberOfSectionsInTableView:(UITableView*)tableView {

NSArray*sections = [self.fetchedResultsControllersections];

returnsections.count;

}

//获取行数

- (NSInteger)tableView:(UITableView*)tableView numberOfRowsInSection:(NSInteger)section {

NSArray*sections = [self.fetchedResultsController sections];

idsectionInfo = sections[section];

return[sectionInfonumberOfObjects];

}

//对cell进行赋值

- (UITableViewCell*)tableView:(UITableView*)tableView cellForRowAtIndexPath:(NSIndexPath*)indexPath {

FriendTableViewCell*cell = [tableViewdequeueReusableCellWithIdentifier:CellIDforIndexPath:indexPath];

XMPPUserCoreDataStorageObject*roster = [self.fetchedResultsControllerobjectAtIndexPath:indexPath];

cell.nameLabel.text= roster.nickname;

cell.lineView.backgroundColor= [UIColor lightGrayColor];

return cell;

}

//实现NSFetchedResultsControllerDelegate代理方法

//对NSFetchedResultsController进行跟踪，实时改变UITableView，跟beginUpdates一起使用。

- (void)controllerWillChangeContent:(NSFetchedResultsController*)controller {

[self.tableViewbeginUpdates];

}

  //通知代理的添加或者删除。当控制器改变sectionInfo时，fetchedObjects也会随之变化

- (void)controller:(NSFetchedResultsController*)controller didChangeSection:(id)sectionInfo

atIndex:(NSUInteger)sectionIndex forChangeType:(NSFetchedResultsChangeType)type {

switch(type) {

caseNSFetchedResultsChangeInsert:

[self.tableViewinsertSections:[NSIndexSetindexSetWithIndex:sectionIndex]

withRowAnimation:UITableViewRowAnimationFade];

break;

caseNSFetchedResultsChangeDelete:

[self.tableViewdeleteSections:[NSIndexSetindexSetWithIndex:sectionIndex]

withRowAnimation:UITableViewRowAnimationFade];

break;

}

}

//获取改变的对象，并对indexPath所对应的值进行修改。

- (void)controller:(NSFetchedResultsController*)controller didChangeObject:(id)anObject

atIndexPath:(NSIndexPath*)indexPath forChangeType:(NSFetchedResultsChangeType)type

newIndexPath:(NSIndexPath*)newIndexPath {

UITableView*tableView =self.tableView;

switch(type) {

caseNSFetchedResultsChangeInsert:

[tableViewinsertRowsAtIndexPaths:[NSArrayarrayWithObject:newIndexPath]

withRowAnimation:UITableViewRowAnimationFade];

break;

caseNSFetchedResultsChangeDelete:

[tableViewdeleteRowsAtIndexPaths:[NSArrayarrayWithObject:indexPath]

withRowAnimation:UITableViewRowAnimationFade];

break;

caseNSFetchedResultsChangeUpdate:

[tableViewreloadRowsAtIndexPaths:@[indexPath]withRowAnimation:UITableViewRowAnimationFade];

break;

caseNSFetchedResultsChangeMove:

[tableViewdeleteRowsAtIndexPaths:[NSArrayarrayWithObject:indexPath]

withRowAnimation:UITableViewRowAnimationFade];

[tableViewinsertRowsAtIndexPaths:[NSArrayarrayWithObject:newIndexPath]

withRowAnimation:UITableViewRowAnimationFade];

break;

}

}

//停止

- (void)controllerDidChangeContent:(NSFetchedResultsController*)controller {

[self.tableViewendUpdates];

}

好友获取基本就是这样了，接下来点击cell进入聊天界面的代码就不写了，实在太多了，因为都是自定义的。

这种即时通讯比较复杂，用的比较多的还是第三方写好的。不用自己搭服务器，聊天界面也是写好的。比如融云，环信等等。

如果有什么问题大家可以一起解决！