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更新时间：2024-06-28 GMT+08:00
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屏幕共享集成

屏幕共享：共享自己的手机屏幕的实时界面给其它用户，更加高效的与其它用户沟通。

共享Bundle Id相关说明

ScreenShareExtension插件bundle Id格式:

主App bundle Id + ScreenShareExtension

ScreenShareExtensionSetupUI插件bundle Id格式:

主App bundle Id + ScreenShareExtensionSetupUI

例：
主App bundle Id：com.xx.xx
ScreenShareExtension插件bundIe Id：com.xx.xx.ScreenShareExtension
ScreenShareExtensionSetupUI插件bundIe Id：com.xx.xx.ScreenShareExtensionSetupUI

iOS端屏幕共享需要添加iOS Extension并实现相关代码，以下步骤用于说明如何集成SDK进行屏幕共享Extension的开发。

由于相关特性对系统能力的依赖，因此需要iOS12及以上版本才能支持屏幕共享功能。详情信息参见“官方文档”。

  1. 创建新的Extension Target，选择“File->New->Target->Broadcast Upload Extension”，创建Extension Target。

    图1 添加选择Target
    图2 选择Broadcast Upload Extension，点击“Next”创建
    图3 添加Broadcast Upload Extension后效果（ScreenShareExtension是创建时的名称）

  2. 设置Extension的支持系统版本号12.0。

    图4 Extension设置
    图5 ExtensionUI设置

  3. 给主工程和Extension添加App Groups，并设置为在开发准备中申请到的groupId。

    图6 默认没有App Groups
    图7 添加App Groups，选择“TARGET->Signing&Capabilities->Capability”
    图8 选中App Groups,

    按照上面两个图片，同理分别为ScreenShareExtension和ScreenShareExtensionSetupUI添加App Groups

    图9 App Groups添加完成效果

  4. 分别给entitlements文件中添加App Groups ID(申请地址 此groupId在初始化的时候也会用到)

    图10 应用程序添加ID效果
    图11 ScreenShareExtension添加ID效果
    图12 ScreenShareExtensionSetupUI添加ID效果

  5. 给ScreenShareExtension 添加HWMExtension.framework，添加配置“TARGETS—>ScreenShareExtension—>Build Settings->Other Linker Flags” 中添加-lc++。

    图13 选择“ScreenShareExtension->Add Files to”
    图14 选择HWMExtension.framework添加到Extension
    图15 添加完成的效果

  6. 配置屏幕共享代码，Extensions 的SampleHandler.m文件中添加代码如下。

    图16 SampleHandler文件位置
    文件内容修改groupId后可以直接使用。 
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    #import "SampleHandler.h"
#import <HWMExtension/HWMExtension.h>
 
 @interface SampleHandler()<ScreenShareManagerDelegate>
 @property (strong, nonatomic) HWMExensionDataManager *screenShareManager;
 @end
 
 @implementation SampleHandler
 
 - (instancetype)init {
     if (self = [super init]) {
//         [HWMExtensionAppGroup setAppGroup:@"group.com.huawei.xxx"];// 这里替换成自己申请的appgroup
        self.screenShareManager = [[HWMExensionDataManager alloc] init];
        self.screenShareManager.delegate = self;
     }
     return self;
 }
 
- (void)dealloc {
    self.screenShareManager = nil;
}
 
- (void)broadcastStartedWithSetupInfo:(NSDictionary<NSString *,NSObject *> *)setupInfo {
    // User has requested to start the broadcast. Setup info from the UI extension can be supplied but optional.
    [self.screenShareManager broadcastStartedWithSetupInfo:setupInfo];
}
 
- (void)broadcastPaused {
    // User has requested to pause the broadcast. Samples will stop being delivered.
    [self.screenShareManager broadcastPaused];
}
 
- (void)broadcastResumed {
    // User has requested to resume the broadcast. Samples delivery will resume.
    [self.screenShareManager broadcastResumed];
}
 
- (void)broadcastFinished {
    // User has requested to finish the broadcast.
    [self.screenShareManager broadcastFinished];
}
 
- (void)processSampleBuffer:(CMSampleBufferRef)sampleBuffer withType:(RPSampleBufferType)sampleBufferType {
    switch (sampleBufferType) {
        case RPSampleBufferTypeVideo:
            // Handle video sample buffer
            [self.screenShareManager processSampleBuffer:sampleBuffer withType:RPSampleBufferTypeVideo];  
            break;
        case RPSampleBufferTypeAudioApp:
            // Handle audio sample buffer for app audio
            // 音频共享相关
            if ([self currentIsAudioShare]) {
                [self.screenShareManager processSampleBuffer:sampleBuffer withType:RPSampleBufferTypeAudioApp];
            }
            break;
        case RPSampleBufferTypeAudioMic:
            // Handle audio sample buffer for mic audio
            break;
            
        default:
            break;
    }
}
 
- (void)screenShareManagerFinishBroadcastWithError:(NSError *)error {
    [self.screenShareManager broadcastFinished];
    [self finishBroadcastWithError: error];
}
- (BOOL)currentIsAudioShare {
    NSUserDefaults *userDefault = [[NSUserDefaults alloc] initWithSuiteName:[HWMExtensionAppGroup getAppGroup]];
    NSString *audioShareType = [userDefault objectForKey:kHWMExtensionAudioShareKey];
    if ([audioShareType isEqualToString:kHWMExtensionAudioShareValue]) {
        return YES;
    }
    return NO;
}
 @end

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