//消息存檔@property(nonatomic,strong) XMPPMessageArchiving * messageArch;//消息存檔存儲模型@property(nonatomic,strong) XMPPMessageArchivingCoreDataStorage * messageStore;

AppDelegate * delgate=[UIapplication sharedApplication].delegate;        //初始化頭像    XMPPJID * fromJid=[XMPPJID jidWithString:self.fromJid];    NSData * fromData=[delgate.vCardAvatarModule photoDataForJID:fromJid];    self.fromImage=[[UIImage  alloc] initWithData:fromData];    NSString * userName= [[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];    XMPPJID * tojid=[XMPPJID jidWithString:userName];        //設(shè)置圖片模型    NSData * toData=[delgate.vCardAvatarModule photoDataForJID:tojid];    self.meImage=[[UIImage  alloc] initWithData:toData];        if (self.fromImage==nil) {        self.fromImage=[UIImage imageNamed:@"defalut"];    }        if (self.meImage==nil) {        self.meImage=[UIImage imageNamed:@"defalut"];    }     [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showKey:) name:UIKeyboardWillShowNotification object:nil];        [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideKey:) name:UIKeyboardWillHideNotification object:nil];        //初始化數(shù)據(jù)存儲  NSString *user=  [[NSUserDefaults standardUserDefaults] objectForKey:@"userName"];        //初始化請求    NSFetchRequest * request=[[NSFetchRequest alloc] initWithEntityName:@"XMPPMessageArchiving_Message_CoreDataObject"];    request.predicate=[NSPredicate predicateWithFormat:@"bareJidStr=%@ and streamBareJidStr=%@",self.fromJid,user];            //定義排序    NSSortDescriptor * des=[NSSortDescriptor sortDescriptorWithKey:@"timestamp" ascending:YES];    [request setSortDescriptors:@[des]];        //獲取上下文    NSManagedObjectContext *context=[delgate.messageStore mainThreadManagedObjectContext];        //初始化結(jié)果存儲器    fetch=[[NSFetchedResultsController alloc] initWithFetchRequest:request managedObjectContext:context sectionNameKeyPath:nil cacheName:nil];        //設(shè)置代理    fetch.delegate=self;        //開始查詢    [fetch performFetch:nil];    

-(NSInteger) tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    id <NSFetchedResultsSectionInfo>  info=fetch.sections[section];        NSLog(@"===%ld",info.numberOfObjects);    return [info numberOfObjects];    }- (UITableViewCell *) tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{     XMPPMessageArchiving_Message_CoreDataObject * obj=[fetch objectAtIndexPath:indexPath];    JRChatTableViewCell * cell=nil;    if (obj.isOutgoing) {         cell=[tableView dequeueReusableCellWithIdentifier:@"cellto"];    }else{         cell=[tableView dequeueReusableCellWithIdentifier:@"cellfrom"];    }            //設(shè)置頭像    cell.image.image=self.meImage;    cell.selectionStyle=UITableViewCellSelectionStyleNone;    [cell setText:obj.body WithFlag:obj.isOutgoing ];    return cell;}

  [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(showKey:) name:UIKeyboardWillShowNotification object:nil];    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(hideKey:) name:UIKeyboardWillHideNotification object:nil];- (void) showKey:(NSNotification * ) notify{    CGFloat time=[notify.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]  ;    CGRect frame=[notify.userInfo[UIKeyboardFrameBeginUserInfoKey] CGRectValue];    [UIView animateWithDuration:time animations:^{        self.keyView.transform=CGAffineTransformMakeTranslation(0, frame.size.height*-1);    }];}- (void) hideKey:(NSNotification * ) notify{    CGFloat time=[notify.userInfo[UIKeyboardAnimationDurationUserInfoKey] doubleValue]  ;    [UIView animateWithDuration:time animations:^{        self.keyView.transform=CGAffineTransformIdentity;    }];}

-(BOOL)textFieldShouldReturn:(UITextField *)textField{    [textField resignFirstResponder];        //發(fā)送消息        //1 取出文本    AppDelegate * delgate=[UIApplication sharedApplication].delegate;        XMPPJID * jid=[XMPPJID jidWithString:self.fromJid];        //初始化消息體    XMPPMessage * message=[XMPPMessage messageWithType:@"chat" to:jid];    [message addBody:self.ketf.text];        //發(fā)送消息    [delgate.stream sendElement:message];        //將消息置空    self.ketf.text=nil;    return YES;}