在项目的 Podfile 文件中添加 pod 'NEMeetingKit/ScreenShare', '~> 3.13.0'，并执行 pod install 命令，引入 NERtcReplayKit framework 依赖。该 framework 封装了数据的采集与发送，供 Extension 进程调用。

Rubytarget 'BroadcasterExtension' do
use_frameworks!
pod 'NEMeetingKit/ScreenShare', '~> 3.13.0'
end

pod install

请在 SampleHandle.h 文件中添加 iOS 系统类 RPBroadcastSampleHandler 的依赖，以实现录屏功能。

Objective-C#import <ReplayKit/ReplayKit.h>
@interface SampleHandler : RPBroadcastSampleHandler
@end

在 SampleHandle.m 文件中，使用步骤一中创建的 App Group 初始化 NEScreenShareSampleHandler，并设置相关参数，同时需要处理停止直播。

Objective-C#import "SampleHandler.h"
#import <NERtcReplayKit/NERtcReplayKit.h>

static NSString *kAppGroup =@"<Your_App_Group>";//具体实现时，只需修改此 kAppGroup 部分。

@interface SampleHandler () <NEScreenShareSampleHandlerDelegate>

@end

@implementation SampleHandler

- (void)broadcastStartedWithSetupInfo:(NSDictionary<NSString *,NSObject *> *)setupInfo {
    // User has requested to start the broadcast. Setup info from the UI extension can be supplied but optional.
    NEScreenShareBroadcasterOptions *options = [[NEScreenShareBroadcasterOptions alloc] init];
    options.appGroup = kAppGroup;
    // 设置采集帧率 30 帧
    options.frameRate = 30;
    // 设置需要采集系统音频数据
    options.needAudioSampleBuffer = YES;
    [[NEScreenShareSampleHandler sharedInstance] broadcastStartedWithSetupInfo:options];
    NEScreenShareSampleHandler.sharedInstance.delegate = self;
}

- (void)broadcastPaused {
    // User has requested to pause the broadcast. Samples will stop being delivered.
    [[NEScreenShareSampleHandler sharedInstance] broadcastPaused];
}

- (void)broadcastResumed {
    // User has requested to resume the broadcast. Samples delivery will resume.
    [[NEScreenShareSampleHandler sharedInstance] broadcastResumed];
}

- (void)broadcastFinished {
    // User has requested to finish the broadcast.
    [[NEScreenShareSampleHandler sharedInstance] broadcastFinished];
}

- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer withType:(RPSampleBufferType)sampleBufferType {
    [[NEScreenShareSampleHandler sharedInstance] processSampleBuffer:sampleBuffer
                                                            withType:sampleBufferType];
}

- (void)onRequestToFinishBroadcastWithError:(NSError *)error {
[self finishBroadcastWithError:error];
}

@end

在项目的 Podfile 文件中添加 pod 'NEScreenShareBroadcaster', '~> 0.5.3'，并执行 pod install 命令，引入 NEScreenShareBroadcaster framework 依赖。该 framework 封装了数据的采集与发送，供 Extension 进程调用。

Rubytarget 'BroadcasterExtension' do
use_frameworks!
pod 'NEScreenShareBroadcaster', '~> 0.5.3'
end

pod install

在 SampleHandler.h 文件中添加 ReplayKit 和 NEScreenShareBroadcaster。

请调整代码，使 SampleHandler 类继承于 NEScreenShareSampleHandler，否则会出现对端看到共享的屏幕是黑屏的情况。

Objective-C#import <ReplayKit/ReplayKit.h>
#import <NEScreenShareBroadcaster/NEScreenShareBroadcaster.h>

@interface SampleHandler : NEScreenShareSampleHandler

@end

在 SampleHandle.m 文件中使用步骤一中创建的 App Group 初始化 NEScreenShareBroadcaster，并设置相关参数，同时需要处理停止直播的请求。

Objective-C#import "SampleHandler.h"

static NSString *kAppGroup = @"<Your_App_Group>";//具体实现时，只需修改此 kAppGroup 部分。

@implementation SampleHandler

- (void)setupWithOptions:(NEScreenShareBroadcasterOptions *)options {
    options.appGroup = kAppGroup;
    CGRect screenRect = [[UIScreen mainScreen] bounds];
    CGFloat scale = [UIScreen mainScreen].scale;
    CGFloat screenWidth = screenRect.size.width * scale;
    CGFloat screenHeight = screenRect.size.height * scale;
    options.targetFrameSize = CGSizeMake(0, 0);
}

#pragma mark - NEScreenShareBroadcasterDelegate
- (void)onHostRequestFinishBroadcast {
    NSError *error = [NSError errorWithDomain:NSStringFromClass(self.class)
                                        code:0
                                    userInfo:@{
                                        NSLocalizedFailureReasonErrorKey:NSLocalizedString(@"屏幕共享已结束。", nil)
                                    }];
    [self finishBroadcastWithError:error];
}

@end