云信官方文档在这

前提是集成了云信IM，并且已经IM登录成功，如果没有集成IM的看这里：iOS 集成网易云信IM-CSDN博客

1、CocoPods集成

#云信
pod 'NIMSDK_LITE', '10.8.0'
  
pod 'NERtcSDK', '5.6.50'#rtc基础SDK
pod 'NEChatUIKit'
  
#呼叫组件API组件
pod 'NERtcCallKit', '~> 3.5.0'
#呼叫组件UI组件
pod 'NERtcCallUIKit', '3.5.0'

//如果你集成了SDWebImage和MJRefresh，则需要固定这两个的版本为：
#pod 'SDWebImage', '5.15.4'
#pod 'MJRefresh', '3.7.5'

2、AppDelegate.m添加头文件

#import <NERtcCallUIKit/NERtcCallUIKit.h>

3、初始化

NESetupConfig *setupConfig = [[NESetupConfig alloc] initWithAppkey:@"6f6568e354026d2d658a7bf5a75cbeac"];
NECallUIKitConfig *config = [[NECallUIKitConfig alloc] init];
config.config = setupConfig;
config.appKey =  @"6f6568e354026d2d658a7bf5a75cbeac";
config.uiConfig.language = NECallUILanguageZhHans;
[[NECallEngine sharedInstance] setTimeout:30];
[[NERtcCallUIKit sharedInstance] setupWithConfig:config];

4、视频通话

//#import <NERtcCallUIKit/NERtcCallUIKit.h>

NEUICallParam *callParam = [[NEUICallParam alloc] init];
callParam.remoteUserAccid = @"remoteUserAccid";
callParam.remoteShowName = @"remoteShowName";
callParam.remoteAvatar = @"remoteAvatar";
callParam.channelName = @"";
callParam.remoteDefaultImage = [UIImage imageNamed:@"user_head"];
callParam.muteDefaultImage = [UIImage imageNamed:@"user_head"];
callParam.extra = @"";
callParam.callType = NECallTypeVideo;
[[NERtcCallUIKit sharedInstance] callWithParam:callParam];

结语：至此，网易云信音视频组件集成完成！不懂的可回复，看到了就回！