iOS开发利用系统推送Notifaction和轮询实现简单聊天系统

首先在StoryBoard里拖了一个UItableView和一个view用来输入文字或者语音，右边的按钮用来切换文字和语音：

<strong>   </strong><span style="font-size:14px;"> //初始换录音
    [self initRecord];
    //获取用户头像
    [self getHeadImg];
    //获取订单详情
    [self getOrderDetailInfo];</span>

<span style="font-size:14px;">#pragma mark - 轮询消息
- (void)runLoopMessage {
    SpeakType speaker = [YCChatInfo getSpeakerPassengerBy:self.orderInfo.bigType];
    [[YCReceiveMessageCenter defaultMessageCenter] getMessageListBySpeaker:speaker
                                     isRemote:NO
                                    andPushId:nil];
}</span>

//会话类型
enum SpeakType {
    //Business
    YCDriverType     = 11,
    YCPassenger      = 12,
    YCSystem         = 13,      //v5.2.2 增加系统角色
    YCLoctionAutoReply  = 14,  //v5.2.2添加本地自动回复
    YCDriverAutoReply   = 15,  //v5.2.2添加司机自动回复 司机角色
    YCLoctionUpdateVersionReply = 16, //v5.2.2 未知消息类型回复 【提示不支持的消息类型。请升级】
};
typedef NSInteger SpeakType;

        //isRemote 点击推送栏消息
        if (response && [response[@"ret_code"] integerValue] == 200) {
            NSArray *array = response[@"result"];
            id topVC = [[YCAppDelegate sharedDelegate] topViewController];
            __block NSString *orderID = nil;
            __block NSString *dType = nil;
            [array enumerateObjectsUsingBlock:^(NSDictionary *result, NSUInteger idx, BOOL *stop) {
                NSString *type = [self controlMessageDispatch:result];
                dType = type;
       <span style="white-space:pre">		</span>//此处省略五百字
            }
        } else {
            DLog(@"轮询数据失败 response = %@, error = %@", response, error);
        }

typedef NS_ENUM(NSInteger, ClassType) {
   OrderClass = 1,
   ChatClass = 2,
   UserClass = 3,
};

- (void)receiveChatMessage:(id)object

NSDictionary *content = dic[@"content"];
YCChatInfo *item;
item = [[YCChatInfo alloc] initWithDictionary:content];

//聊天 类型
enum ChatType {
    ChatText       = 1,
    ChatImage      = 2,
    ChatAudio      = 3,
    ChatPOI        = 4,
    ChatMix        = 5, //混合内容
    ChatCard       = 6,//v5.2.2卡片消息
    ChatUpdateHint     = 701 //v5.2.2不支持类型升级提示
    
};
typedef NSInteger ChatType;

[[NSNotificationCenter defaultCenter] postNotificationName:kChatMessageNotification
                                                    object:nil
                                                  userInfo:@{@"chatInfo" : chatInfo}];
[self.chatStore insertChat:chatInfo];

//首先判断是否是推送消息, 且判断该条点击的推送id进入的
                if (isRemote && [pushId isEqualToString:result[@"id"]]) {
                    if (!orderID && ([type isEqualToString:@"new_chat"] ||
                                     [type isEqualToString:@"DRIVER_ARRIVE"] ||
                                     [type isEqualToString:@"RECEPTION_DRIVER"]||
                                     [type isEqualToString:@"SERVICE_DONE"])) {
                        if ([type isEqualToString:@"new_chat"]) {
                            orderID = result[@"content"][@"topic"];
                        } else if (![topVC isKindOfClass:[YCSelectDriverViewController class]] &&
                                   ([type isEqualToString:@"DRIVER_ARRIVE"] ||
                                    [type isEqualToString:@"RECEPTION_DRIVER"] ||
                                    [type isEqualToString:@"SERVICE_DONE"])) {
                                       orderID = result[@"content"][@"order_id"];
                        }
                    }
                }
            }];
            if (orderID) {
                if ([DefaultValueForKey(kShowWelcome) boolValue]) {
                    if (![topVC isKindOfClass:[YCWelcomeVC class]]) {
                        [[NSNotificationCenter defaultCenter] postNotificationName:kRemotePushVC
                                                                            object:nil
                                                                          userInfo:@{@"orderID" : orderID,
                                                                                     @"type":dType}];
                    }
                }
            }

- (void)receiveMessage:(NSNotification *)notification {
    YCChatInfo *chatInfo  = notification.userInfo[@"chatInfo"];
    //如果此时来的消息不输入当前会话 页面不进行操作
    NSString *string1 = [[NSString alloc] initWithFormat:@"%@", chatInfo.orderID];
    NSString *string2 = [[NSString alloc] initWithFormat:@"%@", self.orderInfo.serverOrderId];
    if (![string1 isEqualToString:string2]) {
        return ;
    }
    NSInteger messageID = chatInfo.messageID;
    YCChatStore *chatStore = [[YCChatStore alloc]init];
    BOOL isNotRepeat = [chatStore selectDBwithMessageID:messageID];
    if (!isNotRepeat) {
        return;
    }
    [self insertRowToTableViewByIndexPath:chatInfo isSend:NO];
}

- (NSIndexPath *)insertRowToTableViewByIndexPath:(YCChatInfo *)chatInfo isSend:(BOOL)isSend {
    NSIndexPath *indexPath;
    [self.chatArray addObject:chatInfo];
    
    indexPath = [NSIndexPath indexPathForRow:[self.chatArray count] - 1
                                   inSection:0];
    void(^ScrollBlock)() = ^{
        DLog(@"%d",indexPath.row);
        [self.tableView scrollToRowAtIndexPath:indexPath
                              atScrollPosition:UITableViewScrollPositionBottom
                                      animated:YES];
    };
    [self.tableView insertRowsAtIndexPaths:@[indexPath]
                          withRowAnimation:YCTableViewRowAnimationFromBottom
                                completion:^{
                                    if (isSend) {
                                        ScrollBlock();
                                    }
    }];
    
    if (!isSend) {
        ScrollBlock();
    }
    
    return indexPath;
}