李洪强iOS开发之-环信05_EaseUI 使用指南

李洪强iOS开发之-环信05_EaseUI 使用指南

EaseUI 使用指南

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简介

EaseUI 封装了 IM 功能常用的控件（如聊天会话、会话列表、联系人列表）。旨在帮助开发者快速集成环信 SDK。

源码地址：

• EaseUI工程
• Demo3.0工程

快速集成

第 1 步：集成 EaseUI 前，首先需要集成环信 iOS SDK，参考：集成文档。

第 2 步：参考ChatDemo3.0 导入的方式,直接将EaseUI拖入已经集成SDK的项目中

初始化

第 1 步：引入相关头文件 #import “EaseUI.h”。

第 2 步：在工程的 AppDelegate 中的以下方法中，调用 EaseUI 对应方法。

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
{
    [[EaseSDKHelper shareHelper] easemobApplication:application
                    didFinishLaunchingWithOptions:launchOptions
                                           appkey:@"douser#istore"
                                     apnsCertName:@"istore_dev"
                                      otherConfig:@{kSDKConfigEnableConsoleLogger:[NSNumber numberWithBool:YES]}];
    return YES;
}

聊天会话

创建聊天会话、传递用户或群 ID 和会话类型（EMConversationType）。

EaseMessageViewController *chatController = [[EaseMessageViewController alloc] initWithConversationChatter:@"8001" conversationType:EMConversationTypeChat];

聊天会话功能扩展

EaseUI 提供现成的聊天会话 ViewController，可以通过继承 EaseMessageViewController 方式（参考 ChatDemo-UI3.0 中 ChatViewController）实现对聊天会话的扩展。

也可以直接使用 EaseMessageViewController，通过 EaseMessageViewControllerDelegate 和 EaseMessageViewControllerDataSource 两个协议实现对 EaseMessageViewController 的扩展。

实现自定义聊天样式

EaseMessageViewControllerDelegate

获取自定义消息 cell，根据 messageModel，用户自己判断是否显示自定义消息 cell。如果返回 nil 会显示默认；如果返回 cell 会显示用户自定义消息cell。

/*!
 @method
 @brief 获取消息自定义cell
 @discussion 用户根据messageModel判断是否显示自定义cell。返回nil显示默认cell，否则显示用户自定义cell
 @param tableView 当前消息视图的tableView
 @param messageModel 消息模型
 @result 返回用户自定义cell
 */
- (UITableViewCell *)messageViewController:(UITableView *)tableView
                       cellForMessageModel:(id<IMessageModel>)messageModel;
 
/*!
 @method
 @brief 获取消息cell高度
 @discussion 用户根据messageModel判断，是否自定义显示cell的高度
 @param viewController 当前消息视图
 @param messageModel 消息模型
 @param cellWidth 视图宽度
 @result 返回用户自定义cell
 */
- (CGFloat)messageViewController:(EaseMessageViewController *)viewController
           heightForMessageModel:(id<IMessageModel>)messageModel
                   withCellWidth:(CGFloat)cellWidth;
 
//具体创建自定义Cell的样例：
- (UITableViewCell *)messageViewController:(UITableView *)tableView cellForMessageModel:(id<IMessageModel>)model
{
    //样例为如果消息是文本消息显示用户自定义cell
    if (model.bodyType == eMessageBodyType_Text) {
        NSString *CellIdentifier = [CustomMessageCell cellIdentifierWithModel:model];
        //CustomMessageCell为用户自定义cell,继承了EaseBaseMessageCell
        CustomMessageCell *cell = (CustomMessageCell *)[tableView dequeueReusableCellWithIdentifier:CellIdentifier];
        if (cell == nil) {
            cell = [[CustomMessageCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifier model:model];
            cell.selectionStyle = UITableViewCellSelectionStyleNone;
        }
        cell.model = model;
        return cell;
    }
    return nil;
}
 
- (CGFloat)messageViewController:(EaseMessageViewController *)viewController
           heightForMessageModel:(id<IMessageModel>)messageModel
                   withCellWidth:(CGFloat)cellWidth
{
    //样例为如果消息是文本消息使用用户自定义cell的高度
    if (messageModel.bodyType == EMMessageBodyTypeText) {
        //CustomMessageCell为用户自定义cell,继承了EaseBaseMessageCell
        return [CustomMessageCell cellHeightWithModel:messageModel];
    }
    return 0.f;
}

通过自定义cell展示动态表情的效果图：

选中消息的回调

/*!
 @method
 @brief 选中消息的回调
 @discussion 用户根据messageModel判断，是否自定义处理消息选中时间。返回YES为自定义处理，返回NO为默认处理
 @param viewController 当前消息视图
 @param messageModel 消息模型
 @result 是否采用自定义处理
 */
- (BOOL)messageViewController:(EaseMessageViewController *)viewController
        didSelectMessageModel:(id<IMessageModel>)messageModel;
 
//选中消息回调的样例：
- (BOOL)messageViewController:(EaseMessageViewController *)viewController
        didSelectMessageModel:(id<IMessageModel>)messageModel
{
    BOOL flag = NO;
    //样例为如果消息是文件消息用户自定义处理选中逻辑
    switch (messageModel.bodyType) {
        case EMMessageBodyTypeImage:
        case EMMessageBodyTypeLocation:
        case EMMessageBodyTypeVideo:
        case EMMessageBodyTypeVoice:
            break;
        case EMMessageBodyTypeFile:
        {
            flag = YES;
            NSLog(@"用户自定义实现");
        }
            break;
        default:
            break;
    }
    return flag;
}

用户选中头像的回调

/*!
 @method
 @brief 点击消息头像
 @discussion 获取用户点击头像回调
 @param viewController 当前消息视图
 @param messageModel 消息模型
 @result
 */
- (void)messageViewController:(EaseMessageViewController *)viewController
    didSelectAvatarMessageModel:(id<IMessageModel>)messageModel;
 
//获取用户点击头像回调的样例：
- (void)messageViewController:(EaseMessageViewController *)viewController
   didSelectAvatarMessageModel:(id<IMessageModel>)messageModel
{
    //UserProfileViewController用户自定义的个人信息视图
    //样例的逻辑是选中消息头像后，进入该消息发送者的个人信息
    UserProfileViewController *userprofile = [[UserProfileViewController alloc] initWithUsername:messageModel.message.from];
    [self.navigationController pushViewController:userprofile animated:YES];
}

录音按钮状态的回调

/*!
 @method
 @brief 底部录音功能按钮状态回调
 @discussion 获取底部录音功能按钮状态回调，根据EaseRecordViewType，用户自定义处理UI的逻辑
 @param viewController 当前消息视图
 @param recordView 录音视图
 @param type 录音按钮当前状态
 @result
 */
- (void)messageViewController:(EaseMessageViewController *)viewController
              didSelectRecordView:(UIView *)recordView
                withEvenType:(EaseRecordViewType)type;
 
//录音按钮状态的回调样例：
- (void)messageViewController:(EaseMessageViewController *)viewController
          didSelectRecordView:(UIView *)recordView
                 withEvenType:(EaseRecordViewType)type
{
    /*
        EaseRecordViewTypeTouchDown,//录音按钮按下
        EaseRecordViewTypeTouchUpInside,//手指在录音按钮内部时离开
        EaseRecordViewTypeTouchUpOutside,//手指在录音按钮外部时离开
        EaseRecordViewTypeDragInside,//手指移动到录音按钮内部
        EaseRecordViewTypeDragOutside,//手指移动到录音按钮外部
    */
    //根据type类型，用户自定义处理UI的逻辑
    switch (type) {
        case EaseRecordViewTypeTouchDown:
        {
            if ([self.recordView isKindOfClass:[EaseRecordView class]]) {
                [(EaseRecordView *)self.recordView  recordButtonTouchDown];
            }
        }
            break;
        case EaseRecordViewTypeTouchUpInside:
        {
            if ([self.recordView isKindOfClass:[EaseRecordView class]]) {
                [(EaseRecordView *)self.recordView recordButtonTouchUpInside];
            }
            [self.recordView removeFromSuperview];
        }
            break;
        case EaseRecordViewTypeTouchUpOutside:
        {
            if ([self.recordView isKindOfClass:[EaseRecordView class]]) {
                [(EaseRecordView *)self.recordView recordButtonTouchUpOutside];
            }
            [self.recordView removeFromSuperview];
        }
            break;
        case EaseRecordViewTypeDragInside:
        {
            if ([self.recordView isKindOfClass:[EaseRecordView class]]) {
                [(EaseRecordView *)self.recordView recordButtonDragInside];
            }
        }
            break;
        case EaseRecordViewTypeDragOutside:
        {
            if ([self.recordView isKindOfClass:[EaseRecordView class]]) {
                [(EaseRecordView *)self.recordView recordButtonDragOutside];
            }
        }
            break;
        default:
            break;
    }
}

EaseMessageViewControllerDataSource

用户判断消息是否允许长按，返回布尔值；如果用户允许长按，此方法为通知用户触发长按手势，返回布尔值，如果返回 NO 默认方式处理，返回 YES 采用用户自定义的处理方式。

/*!
 @method
 @brief 是否允许长按
 @discussion 获取是否允许长按的回调，默认是NO
 @param viewController 当前消息视图
 @param indexPath 长按消息对应的indexPath
 @result
 */
- (BOOL)messageViewController:(EaseMessageViewController *)viewController
   canLongPressRowAtIndexPath:(NSIndexPath *)indexPath;
 
/*!
 @method
 @brief 触发长按手势
 @discussion 获取触发长按手势的回调，默认是NO
 @param viewController 当前消息视图
 @param indexPath 长按消息对应的indexPath
 @result
 */
- (BOOL)messageViewController:(EaseMessageViewController *)viewController
   didLongPressRowAtIndexPath:(NSIndexPath *)indexPath;
 
//长按收拾回调样例：
- (BOOL)messageViewController:(EaseMessageViewController *)viewController
   canLongPressRowAtIndexPath:(NSIndexPath *)indexPath
{
    //样例给出的逻辑是所有cell都允许长按
    return YES;
}
 
- (BOOL)messageViewController:(EaseMessageViewController *)viewController
   didLongPressRowAtIndexPath:(NSIndexPath *)indexPath
{
    //样例给出的逻辑是长按cell之后显示menu视图
    id object = [self.dataArray objectAtIndex:indexPath.row];
    if (![object isKindOfClass:[NSString class]]) {
        EaseMessageCell *cell = (EaseMessageCell *)[self.tableView cellForRowAtIndexPath:indexPath];
        [cell becomeFirstResponder];
        self.menuIndexPath = indexPath;
        [self _showMenuViewController:cell.bubbleView andIndexPath:indexPath messageType:cell.model.bodyType];
    }
    return YES;
}

Demo3.0实现的消息长按效果演示：

将EMMessage类型转换为符合<IMessageModel>协议的类型，设置用户信息，消息显示用户昵称和头像。

/*!
 @method
 @brief 将EMMessage类型转换为符合<IMessageModel>协议的类型
 @discussion 将EMMessage类型转换为符合<IMessageModel>协议的类型,设置用户信息,消息显示用户昵称和头像
 @param viewController 当前消息视图
 @param EMMessage 聊天消息对象类型
 @result 返回<IMessageModel>协议的类型
 */
- (id<IMessageModel>)messageViewController:(EaseMessageViewController *)viewController
                           modelForMessage:(EMMessage *)message;
 
//具体样例：
- (id<IMessageModel>)messageViewController:(EaseMessageViewController *)viewController
                           modelForMessage:(EMMessage *)message
{
    //用户可以根据自己的用户体系，根据message设置用户昵称和头像
    id<IMessageModel> model = nil;
    model = [[EaseMessageModel alloc] initWithMessage:message];
    model.avatarImage = [UIImage imageNamed:@"EaseUIResource.bundle/user"];//默认头像
    model.avatarURLPath = @"";//头像网络地址
    model.nickname = @"昵称";//用户昵称
    return model;
}

聊天会话页面头像和昵称的效果演示：

聊天会话样式自定义

聊天样式的自定义需要在 EaseMessageViewController 中 viewDidload 结束前设置。

//@property中带有UI_APPEARANCE_SELECTOR，都可以通过set的形式设置样式，具体可以参考EaseBaseMessageCell.h,EaseMessageCell.h
 
[[EaseBaseMessageCell appearance] setSendBubbleBackgroundImage:[[UIImage imageNamed:@"chat_sender_bg"] stretchableImageWithLeftCapWidth:5 topCapHeight:35]];//设置发送气泡
[[EaseBaseMessageCell appearance] setRecvBubbleBackgroundImage:[[UIImage imageNamed:@"chat_receiver_bg"] stretchableImageWithLeftCapWidth:35 topCapHeight:35]];//设置接收气泡
 
[[EaseBaseMessageCell appearance] setAvatarSize:40.f];//设置头像大小
[[EaseBaseMessageCell appearance] setAvatarCornerRadius:20.f];//设置头像圆角

消息发送

EaseSDKHelper 封装了发送消息的方法。

具体发送消息样例：

/*
 EMChatTypeChat            单聊消息
 EMChatTypeGroupChat       群聊消息
 EMChatTypeChatRoom        聊天室消息
*/
 
//发送文字消息
EMMessage *message = [EaseSDKHelper sendTextMessage:@"要发送的消息"
                                                 to:@"6001"//接收方
                                        messageType:EMChatTypeChat//消息类型
                                         messageExt:nil]; //扩展信息
//发送位置消息
EMMessage *message = [EaseSDKHelper sendLocationMessageWithLatitude:35.1//经度
                                                          longitude:35.1//纬度
                                                            address:"地址"
                                                                 to:@"6001"//接收方
                                                        messageType:EMChatTypeChat//消息类型
                                                         messageExt:nil];//扩展信息
 
//发送图片消息
EMMessage *message = [EaseSDKHelper sendImageMessageWithImageData:imageData//发送的图片数据NSData
                                                               to:@"6001"//接收方
                                                      messageType:EMChatTypeChat//消息类型
                                                       messageExt:nil];//扩展信息
 
//发送音频消息
EMMessage *message = [EaseSDKHelper sendVoiceMessageWithLocalPath:localPath//音频本地地址
                                                         duration:duration//语音的时长，单位是秒
                                                               to:@"6001"//接收方
                                                      messageType:EMChatTypeChat//消息类型
                                                       messageExt:nil];//扩展信息
 
//发送视频文件消息
EMMessage *message = [EaseSDKHelper sendVideoMessageWithURL:url//发送的视频地址
                                                         to:@"6001"//接收方
                                                messageType:EMChatTypeChat//消息类型
                                                 messageExt:nil];//扩展信息
 
//发送构造成功的消息
[[EMClient sharedClient].chatManager asyncSendMessage:message progress:nil completion:^(EMMessage *aMessage, EMError *aError) {
 
}];                                                                                                                                                                                                                                                   

会话列表

 

会话列表初始化

EaseConversationListViewController *chatListVC = [[EaseConversationListViewController alloc] init];

会话列表扩展

EaseConversationListViewControllerDataSource

用户根据 conversationModel 实现，实现自定义会话中最后一条消息文案的显示内容。

/*!
 @method
 @brief 获取最后一条消息显示的内容
 @discussion 用户根据conversationModel实现,实现自定义会话中最后一条消息文案的显示内容
 @param conversationListViewController 当前会话列表视图
 @param IConversationModel 会话模型
 @result 返回用户最后一条消息显示的内容
 */
- (NSString *)conversationListViewController:(EaseConversationListViewController *)conversationListViewController
      latestMessageTitleForConversationModel:(id<IConversationModel>)conversationModel;
 
 
/*!
 @method
 @brief 获取最后一条消息显示的时间
 @discussion 用户可以根据conversationModel,自定义实现会话列表中时间文案的显示内容
 @param conversationListViewController 当前会话列表视图
 @param IConversationModel 会话模型
 @result 返回用户最后一条消息时间的显示文案
 */
- (NSString *)conversationListViewController:(EaseConversationListViewController *)conversationListViewController
       latestMessageTimeForConversationModel:(id<IConversationModel>)conversationModel;
 
//最后一条消息展示内容样例
- (NSString *)conversationListViewController:(EaseConversationListViewController *)conversationListViewController
      latestMessageTitleForConversationModel:(id<IConversationModel>)conversationModel
{
    NSString *latestMessageTitle = @"";
    EMMessage *lastMessage = [conversationModel.conversation latestMessage];
    if (lastMessage) {
        EMMessageBody *messageBody = lastMessage.body;
        switch (messageBody.type) {
            case EMMessageBodyTypeImage:{
                latestMessageTitle = NSLocalizedString(@"message.image1", @"[image]");
            } break;
            case EMMessageBodyTypeText:{
                // 表情映射。
                NSString *didReceiveText = [EaseConvertToCommonEmoticonsHelper
                                            convertToSystemEmoticons:((EMTextMessageBody *)messageBody).text];
                latestMessageTitle = didReceiveText;
                if ([lastMessage.ext objectForKey:MESSAGE_ATTR_IS_BIG_EXPRESSION]) {
                    latestMessageTitle = @"[动画表情]";
                }
            } break;
            case EMMessageBodyTypeVoice:{
                latestMessageTitle = NSLocalizedString(@"message.voice1", @"[voice]");
            } break;
            case EMMessageBodyTypeLocation: {
                latestMessageTitle = NSLocalizedString(@"message.location1", @"[location]");
            } break;
            case EMMessageBodyTypeVideo: {
                latestMessageTitle = NSLocalizedString(@"message.video1", @"[video]");
            } break;
            case EMMessageBodyTypeFile: {
                latestMessageTitle = NSLocalizedString(@"message.file1", @"[file]");
            } break;
            default: {
            } break;
        }
    }
 
    return latestMessageTitle;
}
 
//最后一条消息展示时间样例
- (NSString *)conversationListViewController:(EaseConversationListViewController *)conversationListViewController
       latestMessageTimeForConversationModel:(id<IConversationModel>)conversationModel
{
    NSString *latestMessageTime = @"";
    EMMessage *lastMessage = [conversationModel.conversation latestMessage];;
    if (lastMessage) {
        latestMessageTime = [NSDate formattedTimeFromTimeInterval:lastMessage.timestamp];
    }
    return latestMessageTime;
}

会话列表最后一条消息和时间显示的效果演示：

EaseConversationListViewControllerDelegate

点击会话列表用户可以根据 conversationModel 自定义处理逻辑。

/*!
 @method
 @brief 获取点击会话列表的回调
 @discussion 获取点击会话列表的回调后,点击会话列表用户可以根据conversationModel自定义处理逻辑
 @param conversationListViewController 当前会话列表视图
 @param IConversationModel 会话模型
 @result
 */
- (void)conversationListViewController:(EaseConversationListViewController *)conversationListViewController
            didSelectConversationModel:(id<IConversationModel>)conversationModel;
 
//会话列表点击的回调样例
- (void)conversationListViewController:(EaseConversationListViewController *)conversationListViewController
            didSelectConversationModel:(id<IConversationModel>)conversationModel
{
    //样例展示为根据conversationModel，进入不同的会话ViewController
        if (conversationModel) {
        EMConversation *conversation = conversationModel.conversation;
        if (conversation) {
            if ([[RobotManager sharedInstance] isRobotWithUsername:conversation.conversationId]) {
                RobotChatViewController *chatController = [[RobotChatViewController alloc] initWithConversationChatter:conversation.conversationId conversationType:conversation.type];
                chatController.title = [[RobotManager sharedInstance] getRobotNickWithUsername:conversation.conversationId];
                [self.navigationController pushViewController:chatController animated:YES];
            } else {
                ChatViewController *chatController = [[ChatViewController alloc] initWithConversationChatter:conversation.conversationId conversationType:conversation.type];
                chatController.title = conversationModel.title;
                [self.navigationController pushViewController:chatController animated:YES];
            }
        }
        [[NSNotificationCenter defaultCenter] postNotificationName:@"setupUnreadMessageCount" object:nil];
        [self.tableView reloadData];
    }
}

联系人列表

 

联系人列表初始化

EaseUsersListViewController *listViewController = [[EaseUsersListViewController alloc] init];

联系人列表扩展

需要实现 EMUserListViewControllerDataSource。

根据 buddy 获取用户自定信息，联系人列表里展示昵称和头像。

/*!
 @method
 @brief 获取用户模型
 @discussion 根据buddy获取用户自定信息，联系人列表里展示昵称和头像
 @param userListViewController 当前联系人视图
 @param buddy 好友的信息描述类
 @result 返回用户模型
 */
- (id<IUserModel>)userListViewController:(EaseUsersListViewController *)userListViewController
                           modelForBuddy:(NSString *)buddy;
 
//联系人列表扩展样例
- (id<IUserModel>)userListViewController:(EaseUsersListViewController *)userListViewController
                           modelForBuddy:(NSString *)buddy
{
    //用户可以根据自己的用户体系，根据buddy设置用户昵称和头像
    id<IUserModel> model = nil;
    model = [[EaseUserModel alloc] initWithBuddy:buddy];
    model.avatarURLPath = @"";//头像网络地址
    model.nickname = @"昵称";//用户昵称
    return model;
}

联系人列表头像和昵称的效果演示：