我已经在我的应用程序中集成了xmpp并能够在表格视图中列出所有用户，但我只想显示在线用户，然后想要实现该功能以向我的在线朋友发送和接收消息...
请为我推荐一些有用的代码......
这是我的代码，在facebook登录后执行。
- (void)fbDidLogin
{
NSLog(@"logged in.....................");
[appDelegate.facebook requestWithGraphPath:@"me" andDelegate:self];
DDLogVerbose(@"%s accessToken: %@ expirationDate: %@",__PRETTY_FUNCTION__,appDelegate.facebook.accessToken,appDelegate.facebook.expirationDate);
self.accessToken = appDelegate.facebook.accessToken;
if (xmppStreamFB) {
[xmppStreamFB release];
xmppStreamFB = nil;
}
xmppStreamFB = [[XMPPStreamFacebook alloc] init];
xmpReconnect = [[XMPPReconnect alloc] initWithStream:xmppStreamFB];
if (xmppRosterStorage) {
[xmppRosterStorage release];
xmppRosterStorage = nil;
}
xmppRosterStorage = [[XMPPRosterCoreDataStorage alloc] init];
if (xmppRoster) {
[xmppRoster release];
xmppRoster = nil;
}
xmppRoster = [[XMPPRoster alloc] initWithStream:xmppStreamFB rosterStorage:xmppRosterStorage];
[xmppStreamFB addDelegate:self];
[xmppRoster addDelegate:self];
[xmppRoster setAutoRoster:YES];
xmppStreamFB.myJID = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@chat.facebook.com", uid]];
// You may need to alter these settings depending on the server you're connecting to
allowSelfSignedCertificates = NO;
allowSSLHostNameMismatch = YES;
// Uncomment me when the proper information has been entered above.
NSError *error = nil;
if (![xmppStreamFB connect:&error])
NSLog(@"Error connecting: %@", error);
if(!tableView)
{
tableView = [[UITableView alloc]initWithFrame:CGRectMake(0,0, 480, 320) style:UITableViewStylePlain];
}
[tableView setFrame:CGRectMake(0,0, 480, 320)];
[tableView setTag:2];
[tableView setDelegate:self];
[tableView setDataSource:self];
[tableView setHidden:NO];
[tableView setBackgroundColor:[UIColor clearColor]];
[tableView setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];
[tableView setAlpha:1.0];
[self.view addSubview:tableView];
[self.tableView reloadData];
[self showTopBar];
}
我不知道用于在线显示用户和实现聊天功能的xmpp框架的实际流程......
i have the following delegate methods as well..
- (void)xmppStreamDidSecure:(XMPPStreamFacebook *)sender
{
NSLog(@"---------- xmppStreamDidSecure: ----------");
}
- (void)xmppStreamDidConnect:(XMPPStreamFacebook *)sender
{
NSLog(@"---------- xmppStreamDidConnect: ----------");
isOpen = YES;
NSError *error = nil;
if (![self.xmppStreamFB authenticateWithAppId:_APP_ID accessToken:self.accessToken error:&error])
{
NSLog(@"Error authenticating: %@", error);
}
else {
NSLog(@"NO Error authenticating:");
/*
ChatViewController *cvc = [[ChatViewController alloc] init];
[self.view addSubview:cvc.view];*/
}
}
- (void)xmppStreamDidAuthenticate:(XMPPStream *)sender
{
NSLog(@"---------- xmppStreamDidAuthenticate: ----------");
[self goOnline];
}
- (void)xmppStream:(XMPPStream *)sender didNotAuthenticate:(NSXMLElement *)error
{
NSLog(@"---------- xmppStream:didNotAuthenticate: ----------");
}
- (BOOL)xmppStream:(XMPPStream *)sender didReceiveIQ:(XMPPIQ *)iq
{
NSLog(@"---------- xmppStream:didReceiveIQ: ----------");
/*
ChatViewController *cvc = [[ChatViewController alloc] init];
[self.view addSubview:cvc.view];*/
return NO;
}
- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
{
NSLog(@"---------- xmppStream:didReceiveMessage: ----------");
}
- (void)xmppStream:(XMPPStream *)sender didReceivePresence:(XMPPPresence *)presence
{
NSLog(@"---------- xmppStream:didReceivePresence: ----------");
}
- (void)xmppStream:(XMPPStream *)sender didReceiveError:(id)error
{
NSLog(@"---------- xmppStream:didReceiveError: ----------");
}
- (void)xmppStreamDidDisconnect:(XMPPStream *)sender
{
NSLog(@"---------- xmppStreamDidDisconnect: ----------");
if (!isOpen)
{
NSLog(@"Unable to connect to server. Check xmppStream.hostName");
}
}
这两种在线和离线用户存在的方法，但不知道如何为我的任务修改它们：
- (void)goOnline
{
NSXMLElement *presence = [NSXMLElement elementWithName:@"presence"];
[[self xmppStream] sendElement:presence];
}
- (void)goOffline
{
NSXMLElement *presence = [NSXMLElement elementWithName:@"presence"];
[presence addAttributeWithName:@"type" stringValue:@"unavailable"];
[[self xmppStream] sendElement:presence];
}
答案 0 :(得分：7)
经过多方努力，我终于找到了如何在线/离线/远离用户展示。
我将逐步告诉你我是如何做到的，这样我对那些经验不足的用户也很有用..
步骤1-点击聊天按钮我正在调用以下方法 -
-(void) chatFacebook
{
if (appDelegate.facebook == nil)
{
appDelegate.facebook = [[[Facebook alloc] initWithAppId:_APP_ID] autorelease];
}
if (!accessToken)
{
[appDelegate.facebook authorize:[XMPPStreamFacebook permissions] delegate:self appAuth:NO safariAuth:NO];
}
else
{
[self fbDidLogin];
}
}
第2步 - 现在，它的时间登录对话框委托方法进来，如果登录全成的fbDidLogin被调用时，这里有委托方法你应该包括 -
#pragma mark FBLoginDialogDelegate
/ ** *用户成功登录时调用。 * /
- (void)fbDidLogin
{
NSLog(@"logged in.....................");
[appDelegate.facebook requestWithGraphPath:@"me" andDelegate:self];
DDLogVerbose(@"%s accessToken: %@ expirationDate: %@",__PRETTY_FUNCTION__,appDelegate.facebook.accessToken,appDelegate.facebook.expirationDate);
self.accessToken = appDelegate.facebook.accessToken;
if (xmppStream) {
[xmppStream release];
xmppStream = nil;
}
xmppStream = [[XMPPStreamFacebook alloc] init];
xmpReconnect = [[XMPPReconnect alloc] initWithStream:xmppStream];
if (xmppRosterStorage) {
[xmppRosterStorage release];
xmppRosterStorage = nil;
}
xmppRosterStorage = [[XMPPRosterCoreDataStorage alloc] init];
if (xmppRoster) {
[xmppRoster release];
xmppRoster = nil;
}
xmppRoster = [[XMPPRoster alloc] initWithStream:xmppStream rosterStorage:xmppRosterStorage];
[xmppStream addDelegate:self];
[xmppRoster addDelegate:self];
[xmppRoster setAutoRoster:YES];
xmppStream.myJID = [XMPPJID jidWithString:[NSString stringWithFormat:@"%@@chat.facebook.com", uid]];
// You may need to alter these settings depending on the server you're connecting to
allowSelfSignedCertificates = NO;
allowSSLHostNameMismatch = YES;
// Uncomment me when the proper information has been entered above.
NSError *error = nil;
if (![xmppStream connect:&error])
NSLog(@"Error connecting: %@", error);
if(!tableView)
{
tableView = [[UITableView alloc]initWithFrame:CGRectMake(0,0, 480, 320) style:UITableViewStylePlain];
}
[tableView setFrame:CGRectMake(0,0, 480, 320)];
[tableView setTag:2];
[tableView setDelegate:self];
[tableView setDataSource:self];
[tableView setHidden:NO];
[tableView setBackgroundColor:[UIColor clearColor]];
[tableView setSeparatorStyle:UITableViewCellSeparatorStyleSingleLine];
[tableView setAlpha:1.0];
[self.view addSubview:tableView];
[self.tableView reloadData];
[self showTopBar];
}
/ ** *当用户在不登录的情况下解除对话框时调用。 * /
- (void)fbDidNotLogin:(BOOL)cancelled
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Canceled" message:@"Login cancled" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alert show];
[alert release];
}
/ ** *用户退出时调用。 * /
- (void)fbDidLogout
{
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Logged out" message:@"Logged out" delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
[alert show];
[alert release];
}
步骤3- fbDidLogin方法的第二行调用FBRequestDelegate方法，所以你应该包括这个协议在.H类，以获得用户的UID（其登录，表示当前用户）则需要实现以下方法 -
- (void)request:(FBRequest*)request didFailWithError:(NSError*)error{
DDLogError(@"%s %@",__PRETTY_FUNCTION__,error);
//[appDelegate.facebook logout:self];
}
/ ** *在请求返回并将其响应解析为对象时调用。 *结果对象可以是字典，数组，字符串或数字，具体取决于 *关于API响应的格式。 * /
- (void)request:(FBRequest*)request didLoad:(id)result {
DDLogVerbose(@"%s............DDLOG................... %@",__PRETTY_FUNCTION__,result);
NSLog(@" Result>>>>-------%@", result);
NSMutableDictionary *dict = [NSMutableDictionary dictionaryWithDictionary:(NSMutableDictionary *)result];
uid = [dict objectForKey:@"id"];
NSLog(@"iddddddddddddd---%@", uid);
}
步骤4-现在来了表视图DataSource和Delegate方法，需要实现这些，这里有方法 -
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView1
{
return [[[self fetchedResultsController] sections] count];
//需要实现NSFetchedResultsControllerDelegate }
- (NSString *)tableView:(UITableView *)sender titleForHeaderInSection:(NSInteger)sectionIndex
{ NSArray * sections = [[self fetchedResultsController] sections];
if (sectionIndex < [sections count])
{
id <NSFetchedResultsSectionInfo> sectionInfo = [sections objectAtIndex:sectionIndex];
int section = [sectionInfo.name intValue];
switch (section)
{
case 0 : return @"Available";
case 1 : return @"Away";
default : return @"Offline";
}
}
}
return @"";
}
- (NSInteger)tableView:(UITableView *)tableView1 numberOfRowsInSection:(NSInteger)sectionIndex
{
NSArray *sections = [[self fetchedResultsController] sections];
if (sectionIndex < [sections count])
{
id <NSFetchedResultsSectionInfo> sectionInfo = [sections objectAtIndex:sectionIndex];
return sectionInfo.numberOfObjects;
NSLog(@"section ifnfo ===========%@", sectionInfo);
}
}
return 0;
}
- (UITableViewCell *)tableView:(UITableView *)tableView1 cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *CellIdentifier = @"Cell";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifier];
if (cell == nil)
{
cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault
reuseIdentifier:CellIdentifier] autorelease];
}
tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
[cell setSelectionStyle:UITableViewCellSelectionStyleGray];
user = [[self fetchedResultsController] objectAtIndexPath:indexPath];
cell.textLabel.text = user.displayName;
cell.textLabel.textColor = [UIColor whiteColor];
cell1 = cell;
}
步骤5-最后你还需要实现NSFetchedResultsController委托方法，这样你就可以用聊天用户填充表了，这里有方法 -
- (NSFetchedResultsController *)fetchedResultsController
{
if (fetchedResultsController == nil)
{
NSEntityDescription *entity = [NSEntityDescription entityForName:@"XMPPUserCoreDataStorage"
inManagedObjectContext:[self managedObjectContext]];
NSSortDescriptor *sd1 = [[NSSortDescriptor alloc] initWithKey:@"sectionNum" ascending:YES];
NSSortDescriptor *sd2 = [[NSSortDescriptor alloc] initWithKey:@"displayName" ascending:YES];
NSArray *sortDescriptors = [NSArray arrayWithObjects:sd1, sd2, nil];
NSFetchRequest *fetchRequest = [[NSFetchRequest alloc] init];
[fetchRequest setEntity:entity];
[fetchRequest setSortDescriptors:sortDescriptors];
[fetchRequest setFetchBatchSize:10];
fetchedResultsController = [[NSFetchedResultsController alloc] initWithFetchRequest:fetchRequest
managedObjectContext:[self managedObjectContext]
sectionNameKeyPath:@"sectionNum"
cacheName:nil];
[fetchedResultsController setDelegate:self];
[sd1 release];
[sd2 release];
[fetchRequest release];
NSError *error = nil;
if (![fetchedResultsController performFetch:&error])
{
NSLog(@"Error performing fetch: %@", error);
}
}
return fetchedResultsController;
}
- (void)controllerDidChangeContent:(NSFetchedResultsController *)controller
{
[[self tableView] reloadData];
}
第6步 - 编译并运行代码，用户列表应出现在表视图中
如果任何问题出现，请分享，我总是在这里帮助你。而请不介意，如果有一些失误，而发布这个答案，CZ我张贴只是第三次
感谢。