iOS开发-环信群聊集成

来源：互联网发布：航海家炒股软件多少钱编辑：程序博客网时间：2024/06/05 19:30

一、加载群列表

1. 新建一个群列表的界面

新建一个类，取名叫做GroupChatViewController，因为这是个列表，所以继承于列表基类YCBaseTableViewController。在GroupChatViewController.m中添加如下代码：

#import "GroupChatViewController.h"@interface GroupChatViewController ()@end@implementation GroupChatViewController- (void)viewDidLoad {    [super viewDidLoad];    self.title = @"我的群";    UIBarButtonItem *btnItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd                                                                             target:self                                                                             action:@selector(btnCreateGroup:)];    self.navigationItem.rightBarButtonItem = btnItem;}#pragma mark - Private Menthods//新建一个群- (void)btnCreateGroup:(id)sender{}@end

2. 加载群列表

1、环信官方文档提供加载群有五种方法，这是异步加载的方法，如下：

[[EaseMob sharedInstance].chatManager asyncFetchMyGroupsListWithCompletion:^(NSArray *groups, EMError *error) {    if (!error) {        NSLog(@"获取成功 -- %@",groups);    }} onQueue:nil

2、在我的工程中实现加载群列表

在GroupChatViewController.m文件中添加如下代码：

#import "GroupChatViewController.h"#import "ChatViewController.h"@interface GroupChatViewController (){    NSArray *arrGroup;}@end@implementation GroupChatViewController- (void)viewDidLoad {    [super viewDidLoad];    self.title = @"我的群";    UIBarButtonItem *btnItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd                                                                             target:self                                                                             action:@selector(btnCreateGroup:)];    self.navigationItem.rightBarButtonItem = btnItem;    //获取所有的群    [[EaseMob sharedInstance].chatManager asyncFetchMyGroupsListWithCompletion:^(NSArray *groups, EMError *error) {        if (!error) {            arrGroup = [NSArray arrayWithArray:groups];            [self.tableView reloadData];        }    } onQueue:nil];}#pragma mark - UITableView Delegate & Datasource- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    return arrGroup.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    static NSString *cellIdentifier = @"CELL";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier];    if (cell == nil) {        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:cellIdentifier];    }    EMGroup *group = [arrGroup objectAtIndex:indexPath.row];    NSString *imageName = @"group_header";    cell.imageView.image = [UIImage imageNamed:imageName];    if (group.groupSubject && group.groupSubject.length > 0) {        cell.textLabel.text = group.groupSubject;    }    else {        cell.textLabel.text = group.groupId;    }    return cell;}- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {    [tableView deselectRowAtIndexPath:indexPath animated:YES];    EMGroup *group = [arrGroup objectAtIndex:indexPath.row];    ChatViewController *chatController = [[ChatViewController alloc] initWithChatter:group.groupId isGroup:YES];    chatController.title = group.groupSubject;    [self.navigationController pushViewController:chatController animated:YES];}- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {    return 10.0f;}- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {    return 10.0f;}#pragma mark - Private Menthods//新建一个群- (void)btnCreateGroup:(id)sender{}@end

3、添加跳转

在AddressBookViewController.m中点击列表的方法中，添加一段代码跳转的方法。首先添加头文件：

#import "GroupChatViewController.h"

然后添加跳转的代码：

 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {    if (indexPath.section == 0) {        switch (indexPath.row) {            case 0:            {                SystemNotificationViewController *sysVC = [[SystemNotificationViewController alloc] init];                [self.navigationController pushViewController:sysVC animated:YES];                break;            }            case 1:            {                GroupChatViewController *groupChatVC = [[GroupChatViewController alloc] init];                [self.navigationController pushViewController:groupChatVC animated:YES];                break;            }            default:                break;        }    }else {        EMBuddy *buddy = [arrFriends objectAtIndex:indexPath.row];        ChatViewController *chatVC = [[ChatViewController alloc] initWithChatter:buddy.username isGroup:NO];        chatVC.title = buddy.username; //好友的名字        [self.navigationController pushViewController:chatVC animated:YES];    }}

如果你的工程运行没有数据，是因为你的账号里面没有群，先去环信后台新建几个群。
这里写图片描述

二、新建群

1. 新建一个创群的界面

1、新建一个类，取名叫做CreateGoupViewController，是一个列表类，所以基于YCBaseTableViewController。添加创建UI的代码，如下：

#import "CreateGroupViewController.h"@interface CreateGroupViewController (){    NSArray *arrFriends;}@property (retain, nonatomic) UITextField *textFieldName;@property (retain, nonatomic) UITextView *textViewDes;@property (retain, nonatomic) UIActivityIndicatorView *activityView;@end@implementation CreateGroupViewController@synthesize textFieldName,textViewDes;- (void)viewDidLoad {    [super viewDidLoad];    _activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];    _activityView.center = self.tableView.center;    _activityView.color = [UIColor blackColor];    [self.view addSubview:_activityView];    self.title = @"新建群";    UIBarButtonItem *btnItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone                                                                             target:self                                                                             action:@selector(btnClickDone:)];    self.navigationItem.rightBarButtonItem = btnItem;}#pragma mark - UITableViewDelegate & UITableViewDataSource- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {    return 170.0f;}- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {    return 10.0f;}- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{    UIView *headerView = [YCCommonCtrl commonViewWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 165) backgroundColor:kColor_White];    textFieldName = [YCCommonCtrl commonTextFieldWithFrame:CGRectMake(10, 10, SCREEN_WIDTH-20, 35)                                                            placeholder:@"群聊名称"                                                                  color:kColor_Gray                                                                   font:kFont_Title                                                        secureTextEntry:NO                                                               delegate:self];    [YCCommonCtrl setViewBorderWithView:textFieldName borderColor:kColor_LightGray borderWidth:1.0f cornerRadius:5.0f];    [headerView addSubview:textFieldName];    textViewDes = [YCCommonCtrl commonTextViewWithFrame:CGRectMake(10, 55, SCREEN_WIDTH-20, 80)                                                               text:@""                                                              color:kColor_Gray                                                               font:kFont_Title                                                      textAlignment:NSTextAlignmentLeft];    [YCCommonCtrl setViewBorderWithView:textViewDes borderColor:kColor_LightGray borderWidth:1.0f cornerRadius:5.0f];    [headerView addSubview:textViewDes];    UILabel *label = [YCCommonCtrl commonLableWithFrame:CGRectMake(10, 150, SCREEN_WIDTH-20, 15)                                                    text:@"请选择群成员"                                                   color:kColor_Blue                                                    font:kFont_Large                                            textAlignment:NSTextAlignmentLeft];    [headerView addSubview:label];    return headerView;}#pragma mark - Private Menthods- (void)btnClickDone:(id)sender{}

2、设置跳转

在GroupChatViewController.m中增加一个跳转的方法。
首先GroupChatViewController.m导入头文件：

#import "CreateGroupViewController.h"

然后，在GroupChatViewController.m中的btnCreateGroup方法中，添加代码：

//新建一个群- (void)btnCreateGroup:(id)sender{    CreateGroupViewController *createGroupVC = [[CreateGroupViewController alloc] init];    [self.navigationController pushViewController:createGroupVC animated:YES];}

2. 选择群成员

建好群之后，还可以选择一些群成员，当然这些群成员是从你的好友列表中去选择，所以我们这里需要进行加载好友列表。创建一个arrSelected数组用来保存选中的好友。代码如下：

#import "CreateGroupViewController.h"@interface CreateGroupViewController (){    NSArray *arrFriends;    NSMutableArray *arrSelected;}@property (retain, nonatomic) UITextField *textFieldName;@property (retain, nonatomic) UITextView *textViewDes;@property (retain, nonatomic) UIActivityIndicatorView *activityView;@end@implementation CreateGroupViewController@synthesize textFieldName,textViewDes;- (void)viewDidLoad {    [super viewDidLoad];    _activityView = [[UIActivityIndicatorView alloc] initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleGray];    _activityView.center = self.tableView.center;    _activityView.color = [UIColor blackColor];    [self.view addSubview:_activityView];    self.title = @"新建群";    UIBarButtonItem *btnItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone                                                                             target:self                                                                             action:@selector(btnClickDone:)];    self.navigationItem.rightBarButtonItem = btnItem;    arrSelected = [[NSMutableArray alloc] init];    //获取好友列表    [[EaseMob sharedInstance].chatManager asyncFetchBuddyListWithCompletion:^(NSArray *buddyList, EMError *error) {        if (!error) {            arrFriends = [NSArray arrayWithArray:buddyList];            [self.tableView reloadData];        }    } onQueue:nil];}#pragma mark - UITableViewDelegate & UITableViewDataSource- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {    return 1;}- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section {    return arrFriends.count;}- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath {    static NSString *identifier = @"CELL";    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:identifier];    if (cell == nil) {        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:identifier];    }    EMBuddy *eMBuddy = [arrFriends objectAtIndex:indexPath.row];    cell.textLabel.text = eMBuddy.username;    cell.imageView.image = [UIImage imageNamed:@"chatListCellHead"];    return cell;}- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {    UITableViewCell *cell=[tableView cellForRowAtIndexPath:indexPath]; //得到当前选中的cell    if (cell.accessoryType  == UITableViewCellAccessoryCheckmark) {        cell.accessoryType = UITableViewCellAccessoryNone;        [arrSelected removeObject:[arrFriends objectAtIndex:indexPath.row]];    }else {        cell.accessoryType = UITableViewCellAccessoryCheckmark;        [arrSelected addObject:[arrFriends objectAtIndex:indexPath.row]];    }    NSLog(@"%ld",arrSelected.count);}- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section {    return 170.0f;}- (CGFloat)tableView:(UITableView *)tableView heightForFooterInSection:(NSInteger)section {    return 10.0f;}- (UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section{    UIView *headerView = [YCCommonCtrl commonViewWithFrame:CGRectMake(0, 0, SCREEN_WIDTH, 165) backgroundColor:kColor_White];    textFieldName = [YCCommonCtrl commonTextFieldWithFrame:CGRectMake(10, 10, SCREEN_WIDTH-20, 35)                                                            placeholder:@"群聊名称"                                                                  color:kColor_Gray                                                                   font:kFont_Title                                                        secureTextEntry:NO                                                               delegate:self];    [YCCommonCtrl setViewBorderWithView:textFieldName borderColor:kColor_LightGray borderWidth:1.0f cornerRadius:5.0f];    [headerView addSubview:textFieldName];    textViewDes = [YCCommonCtrl commonTextViewWithFrame:CGRectMake(10, 55, SCREEN_WIDTH-20, 80)                                                               text:@""                                                              color:kColor_Gray                                                               font:kFont_Title                                                      textAlignment:NSTextAlignmentLeft];    [YCCommonCtrl setViewBorderWithView:textViewDes borderColor:kColor_LightGray borderWidth:1.0f cornerRadius:5.0f];    [headerView addSubview:textViewDes];    UILabel *label = [YCCommonCtrl commonLableWithFrame:CGRectMake(10, 150, SCREEN_WIDTH-20, 15)                                                    text:@"请选择群成员"                                                   color:kColor_Blue                                                    font:kFont_Large                                            textAlignment:NSTextAlignmentLeft];    [headerView addSubview:label];    return headerView;}#pragma mark - Private Menthods- (void)btnClickDone:(id)sender{}@end

3. 创群

终于到了最后一步了，在btnClickDone方法中添加创群的接口代码：

#pragma mark - Private Menthods- (void)btnClickDone:(id)sender{    NSMutableArray *arrName = [[NSMutableArray alloc] init];    for (EMBuddy *eMBuddy in arrSelected ) {        [arrName addObject:eMBuddy.username];    }    EMGroupStyleSetting *groupStyleSetting = [[EMGroupStyleSetting alloc] init];    groupStyleSetting.groupMaxUsersCount = 500;    groupStyleSetting.groupStyle = eGroupStyle_PrivateOnlyOwnerInvite;    [self.activityView startAnimating];    [[EaseMob sharedInstance].chatManager asyncCreateGroupWithSubject:textFieldName.text                                                          description:textViewDes.text                                                             invitees:arrName                                                initialWelcomeMessage:@"hello"                                                         styleSetting:groupStyleSetting                                                           completion:^(EMGroup *group, EMError *error) {                                                               if(!error){                                                                   [self.activityView stopAnimating];                                                                   UIAlertController *alterController = [UIAlertController alertControllerWithTitle:nil                                                                                                                                            message:@"创建成功"                                                                                                                                     preferredStyle:UIAlertControllerStyleAlert];                                                                   [self presentViewController:alterController animated:YES completion:nil];                                                                   UIAlertAction *alterAction = [UIAlertAction actionWithTitle:@"确定"                                                                                                                         style:UIAlertActionStyleDefault                                                                                                                       handler:^(UIAlertAction * _Nonnull action) {                                                                                                                           [self.navigationController popViewControllerAnimated:YES];                                                                                                                       }];                                                                   [alterController addAction:alterAction];                                                               }                                                           }                                                              onQueue:nil];}

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