环信

-------------------AppDelegate.m-------------------

#import "AppDelegate.h"

// 环信的头文件
#import <EaseMob.h>

@interface AppDelegate ()

@end

@implementation AppDelegate


- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    // 注册环信SDK
    // 第一个参数 ：APPkey 由应用名字#公司的ID构成
    // 第二个参数 ：如果使用推送功能 则需要填推送证书的名字
    [[EaseMob sharedInstance] registerSDKWithAppKey:@"lutianyi#easemobsample" apnsCertName:@""];
    
    return YES;
}

- (void)applicationWillResignActive:(UIApplication *)application {
    // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
    // Use this method to pause ongoing tasks, disable timers, and throttle down OpenGL ES frame rates. Games should use this method to pause the game.
}
// App进入后台
- (void)applicationDidEnterBackground:(UIApplication *)application
{
    [[EaseMob sharedInstance] applicationDidEnterBackground:application];
}
// App将要从后台返回
- (void)applicationWillEnterForeground:(UIApplication *)application
{
    [[EaseMob sharedInstance] applicationWillEnterForeground:application];
}

- (void)applicationDidBecomeActive:(UIApplication *)application {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
}
// 申请处理时间
- (void)applicationWillTerminate:(UIApplication *)application
{
    [[EaseMob sharedInstance] applicationWillTerminate:application];
    [self saveContext];
}

----------------LoginViewController.m----------------

#import "LoginViewController.h"

#import "RegisterViewController.h"
#import "MessageViewController.h"
#import "RosterViewController.h"
#import "AppDelegate.h"
#import <EaseMob.h>

@interface LoginViewController ()

@property (weak, nonatomic) IBOutlet UITextField *userNameTextField;
@property (weak, nonatomic) IBOutlet UITextField *passWordTextField;
@property (weak, nonatomic) IBOutlet UIButton *loginButton;
@property (weak, nonatomic) IBOutlet UIButton *registerButton;

@end

@implementation LoginViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.userNameTextField.layer.borderWidth = 1;
    self.passWordTextField.layer.borderWidth = 1;
    
}

- (IBAction)loginButtonClicked:(id)sender
{
    [[EaseMob sharedInstance].chatManager asyncLoginWithUsername:self.userNameTextField.text password:self.passWordTextField.text completion:^(NSDictionary *loginInfo, EMError *error)
    {
        if (!error)
        {
            NSLog(@"登录成功");
            MessageViewController *messageVC = [MessageViewController new];
            UINavigationController *messageNC = [[UINavigationController alloc] initWithRootViewController:messageVC];
            messageNC.title = @"消息";
            
            RosterViewController *rosterVC = [RosterViewController new];
            UINavigationController *rosterNC = [[UINavigationController alloc] initWithRootViewController:rosterVC];
            rosterNC.title = @"好友";
            
            UITabBarController *tabBar = [UITabBarController new];
            tabBar.viewControllers = @[messageNC, rosterNC];
            
            AppDelegate *app = (AppDelegate *)[UIApplication sharedApplication].delegate;
            app.window.rootViewController = tabBar;
        }
        else
        {
            NSLog(@"登录失败  error ==== %@", error);
        }
    } onQueue:dispatch_get_main_queue()];
}
- (IBAction)registerButtonClicked:(id)sender
{
    RegisterViewController *registerVC = [RegisterViewController new];
    registerVC = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:@"registerVC"];
    [self showViewController:registerVC sender:nil];
    
    __weak typeof(self) pSelf = self;
    registerVC.passValue = ^(NSString *userName, NSString *passWord)
    {
        pSelf.userNameTextField.text = userName;
        pSelf.passWordTextField.text = passWord;
    };
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

----------------RegisterViewController.h--------------

#import <UIKit/UIKit.h>

typedef void(^myBlock)(NSString *, NSString *);

@interface RegisterViewController : UIViewController

@property (nonatomic, copy)myBlock passValue;

@end

---------------RegisterViewController.m--------------

#import "RegisterViewController.h"

#import <EaseMob.h>

@interface RegisterViewController ()

@property (weak, nonatomic) IBOutlet UITextField *userNameTextField;
@property (weak, nonatomic) IBOutlet UITextField *passWordTextField;
@property (weak, nonatomic) IBOutlet UIButton *registerButton;

@end

@implementation RegisterViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.userNameTextField.layer.borderWidth = 1;
    self.passWordTextField.layer.borderWidth = 1;
    
}

- (IBAction)registerButtonClicked:(id)sender
{
    [[EaseMob sharedInstance].chatManager asyncRegisterNewAccount:self.userNameTextField.text password:self.passWordTextField.text withCompletion:^(NSString *username, NSString *password, EMError *error)
    {
        if (!error)
        {
            NSLog(@"注册成功");
            self.passValue(self.userNameTextField.text, self.passWordTextField.text);
            [self dismissViewControllerAnimated:YES completion:nil];
        }
        else
        {
            NSLog(@"注册失败 error === %@", error);
        }
    } onQueue:dispatch_get_main_queue()];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

---------------MessageViewController.m--------------

#import "MessageViewController.h"

#import "ChatViewController.h"
#import <EaseMob.h>

@interface MessageViewController ()<UITableViewDataSource, UITableViewDelegate, EMChatManagerDelegate>

@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) NSMutableArray *dataArray;

@end

@implementation MessageViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.navigationItem.title = @"最新消息";
    
    self.dataArray = [NSMutableArray array];
    self.tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    [self.view addSubview:self.tableView];
}
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [[EaseMob sharedInstance].chatManager addDelegate:self delegateQueue:dispatch_get_main_queue()];
    [self reloadConversation];
}
// 收到一条消息
- (void)didReceiveMessage:(EMMessage *)message
{
    [self reloadConversation];
}

// 获取数据 获取当前用户的会话列表
- (void)reloadConversation
{
    [self.dataArray removeAllObjects];
    [self.dataArray addObjectsFromArray:[[EaseMob sharedInstance].chatManager loadAllConversationsFromDatabaseWithAppend2Chat:YES]];
    [self.tableView reloadData];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.dataArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CELL"];
    if (!cell)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue2 reuseIdentifier:@"CELL"];
    }
    
    // 聊天会话对象
    EMConversation *conversation = self.dataArray[indexPath.row];
    // chatter 会话对象中的名字
    cell.textLabel.text = conversation.chatter;
    
    // message 聊天消息对象 conversation.latestMessage 最后一条消息
    EMMessage *message = conversation.latestMessage;
    // EMTextMessageBody 消息体对象，message.messageBodies 聊天消息中保存的消息体对象
    // 获取到最后一次发送的消息
    EMTextMessageBody *body = message.messageBodies.lastObject;
    cell.detailTextLabel.text = body.text;
    return cell;
}

- (void)didReceiveBuddyRequest:(NSString *)username message:(NSString *)message
{
    NSString *title = [NSString stringWithFormat:@"请求添加您为好友"];
    UIAlertController *controller = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *action = [UIAlertAction actionWithTitle:@"好的" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action)
    {
        // 环信的错误类 相当于NSError
        EMError *error = nil;
        BOOL succeed = [[EaseMob sharedInstance].chatManager acceptBuddyRequest:username error:&error];
        if (succeed && !error)
        {
            NSLog(@"接受成功");
        }
        else
        {
            NSLog(@"接收好友请求失败，error ==== %@", error);
        }
    }];
    UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"残忍拒绝" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action)
    {
        // 环信的错误类 相当于NSError
        EMError *error = nil;
        BOOL succeed = [[EaseMob sharedInstance].chatManager rejectBuddyRequest:username reason:@"我拒绝" error:&error];
        if (succeed && !error)
        {
            NSLog(@"拒绝成功");
        }
        else
        {
            NSLog(@"拒绝好友请求失败，error ==== %@", error);
        }
    }];
    [controller addAction:action];
    [controller addAction:action1];
    [self presentViewController:controller animated:YES completion:nil];
}

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    ChatViewController *chatVC = [ChatViewController new];
    
    EMConversation *conversation = self.dataArray[indexPath.row];
    // chatter 会话对象的用户名
    chatVC.chatter = conversation.chatter;
    
    [self showViewController:chatVC sender:nil];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

---------------RosterViewController.m----------------

#import "RosterViewController.h"

#import "AddFriendsViewController.h"
#import "ChatViewController.h"
#import <EaseMob.h>

@interface RosterViewController ()<UITableViewDataSource, UITableViewDelegate>

@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) NSMutableArray *dataArray;

@end

@implementation RosterViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.navigationItem.title = @"好友列表";
    
    self.dataArray = [NSMutableArray array];
    self.tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    [self.view addSubview:self.tableView];
    
    [self.tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"CELL"];
    
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(addButtonClicked)];
}
- (void)addButtonClicked
{
    AddFriendsViewController *addFriendsVC = [AddFriendsViewController new];
    addFriendsVC = [[UIStoryboard storyboardWithName:@"Main" bundle:[NSBundle mainBundle]] instantiateViewControllerWithIdentifier:@"addFriendsVC"];
    [self presentViewController:addFriendsVC animated:YES completion:nil];
}
- (void)viewWillAppear:(BOOL)animated
{
    [super viewWillAppear:animated];
    [self reloadRoster];
}
- (void)reloadRoster
{
    [self.dataArray removeAllObjects];
    [[EaseMob sharedInstance].chatManager asyncFetchBuddyListWithCompletion:^(NSArray *buddyList, EMError *error) {
        [self.dataArray removeAllObjects];
        [self.dataArray addObjectsFromArray:buddyList];
        [self.tableView reloadData];
    } onQueue:dispatch_get_main_queue()];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.dataArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CELL" forIndexPath:indexPath];
    // EMBuddy 好友的信息描述类
    EMBuddy *buddy = self.dataArray[indexPath.row];
    // username 好友名字
    cell.textLabel.text = buddy.username;
    return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    ChatViewController *chatVC = [[ChatViewController alloc] init];
    EMBuddy *buddy = self.dataArray[indexPath.row];
    chatVC.chatter = buddy.username;
    [self showViewController:chatVC sender:nil];
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

----------------ChatViewController.h----------------

#import <UIKit/UIKit.h>

@interface ChatViewController : UIViewController

@property (nonatomic, copy) NSString *chatter;

@end

----------------ChatViewController.m----------------

#import "ChatViewController.h"

#import <EaseMob.h>

@interface ChatViewController ()<UITableViewDataSource, UITableViewDelegate, EMChatManagerDelegate>

@property (nonatomic, strong) UITableView *tableView;
@property (nonatomic, strong) EMConversation *conversation;

@end

@implementation ChatViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];
    self.tableView.delegate = self;
    self.tableView.dataSource = self;
    [self.view addSubview:self.tableView];
    
    self.navigationItem.rightBarButtonItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(sendMessage)];
    
    [self reloadMessage];
}

-(void)reloadMessage
{
    self.conversation = [[EaseMob sharedInstance].chatManager conversationForChatter:self.chatter conversationType:eConversationTypeChat];
    [self.tableView reloadData];
}

- (void)sendMessage
{
    UIAlertController *controller = [UIAlertController alertControllerWithTitle:@"发送消息" message:nil preferredStyle:UIAlertControllerStyleAlert];
    UIAlertAction *action = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action)
    {
        
    }];
    UIAlertAction *action1 = [UIAlertAction actionWithTitle:@"发送" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action)
    {
        // 聊天的文本对象
        EMChatText *text = [[EMChatText alloc] initWithText:controller.textFields.firstObject.text];
        // 聊天的文本消息体对象
        EMTextMessageBody *textMessageBody = [[EMTextMessageBody alloc] initWithChatObject:text];
        // 聊天消息类
        EMMessage *message = [[EMMessage alloc] initWithReceiver:self.chatter bodies:@[textMessageBody]];
        // 发送这条消息
        [[EaseMob sharedInstance].chatManager asyncSendMessage:message progress:nil prepare:^(EMMessage *message, EMError *error)
        {
            // 准备发送
        } onQueue:dispatch_get_main_queue() completion:^(EMMessage *message, EMError *error)
        {
            // 发送成功
            if (!error)
            {
                [self reloadMessage];
            }
        } onQueue:dispatch_get_main_queue()];
    }];
    [controller addAction:action];
    [controller addAction:action1];
    [controller addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
        
    }];
    [self presentViewController:controller animated:YES completion:nil];
}
- (void)didReceiveMessage:(EMMessage *)message
{
    [self reloadMessage];
}
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    return self.conversation.loadAllMessages.count;
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"CELL"];
    if (!cell)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:@"CELL"];
    }
    // 每一个message表示一条聊天记录
    EMMessage *message = self.conversation.loadAllMessages[indexPath.row];
    // EMTextMessageBody 表示聊天的信息
    EMTextMessageBody *body = [message.messageBodies lastObject];
    // message.to 表示聊天的对象
    if ([message.to isEqualToString:self.chatter])
    {
        cell.textLabel.text = body.text;
        cell.detailTextLabel.text = @"";
    }
    else
    {
        cell.textLabel.text = @"";
        cell.detailTextLabel.text = body.text;
    }
    return cell;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end

--------------AddFriendsViewController.m-------------

#import "AddFriendsViewController.h"

#import <EaseMob.h>

@interface AddFriendsViewController ()

@property (weak, nonatomic) IBOutlet UITextField *userNameTextField;
@property (weak, nonatomic) IBOutlet UIButton *addFriendsButton;

@end

@implementation AddFriendsViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    
    self.userNameTextField.layer.borderWidth = 1;
    
}
- (IBAction)addFriendsButtonClicked:(id)sender
{
    EMError *error = nil;
    BOOL succeed = [[EaseMob sharedInstance].chatManager addBuddy:self.userNameTextField.text message:@"加一下好友，可以么？" error:&error];
    if (succeed && !error)
    {
        [self dismissViewControllerAnimated:YES completion:nil];
    }
    else
    {
        NSLog(@"error ==== %@", error);
    }
    
}
- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}
@end
Main.storyboard

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