最近学习Android平台下跨平台音视频通信开发，虽然网上有很多开源项目供我们参考学习，但音视频效果很一般，还有很多不稳定的因素，毕竟是开源嘛。在国内我找到了一个比较好音视频通信解决方案（点击下载官方demo），该案例提供了纯Java语言接口供我们调用，随后我参照官方android demo程序和开发文档并结合自己的见解写了一个android音频通信软件，200行以内代码就搞定了（难以相信吧）。其实我只是调用其相关API即可实现。以下是我自己写的Java代码，以备大家互相学习：
/** * Android视频聊天 * 1、初始化SDK 2、连接服务器、 3、用户登录；4、进入房间；5、打开本地视频；6、请求对方视频 */public class VideoChatActivity extends Activity implements AnyChatBaseEvent{ private AnyChatCoreSDK anychat; // 核心SDK private SurfaceView remoteSurfaceView; // 对方视频 private SurfaceView localSurfaceView; // 本地视频 private ConfigEntity configEntity; private boolean bSelfVideoOpened = false; // 本地视频是否已打开 private boolean bOtherVideoOpened = false; // 对方视频是否已打开 private TimerTask mTimerTask; // 定时器 private Timer mTimer = new Timer(true); private Handler handler; // 用Handler来不间断刷新即时视频 private List<String> userlist = new ArrayList<String>();//保存在线用户列表 private int userid; // 用户ID @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_video_chat); remoteSurfaceView = (SurfaceView) findViewById(R.id.surface_remote); localSurfaceView = (SurfaceView) findViewById(R.id.surface_local); configEntity = ConfigService.LoadConfig(this);//加载视频通话设置 loginSystem();// 初始化SDK 连接服务器 mTimerTask = new TimerTask(){ public void run(){ Message mesasge = new Message(); handler.sendMessage(mesasge); } }; mTimer.schedule(mTimerTask, 1000, 100); handler = new Handler(){ @Override public void handleMessage(Message msg){ VideoChat();// 不间断显示即时视频通话画面 super.handleMessage(msg); } }; } // 初始化SDK 连接服务器 private void loginSystem(){ if (anychat == null){ anychat = new AnyChatCoreSDK(); anychat.SetBaseEvent(this); // 设置基本事件回调函数 if (configEntity.useARMv6Lib != 0) // 使用ARMv6指令集 anychat.SetSDKOptionInt(AnyChatDefine. BRAC_SO_CORESDK_USEARMV6LIB, 1); anychat.InitSDK(android.os.Build.VERSION.SDK_INT, 0); // 初始化SDK } anychat.Connect("demo.anychat.cn", 8906);// 连接服务器 } // 显示即时视频通话画面 public void VideoChat(){ if (!bOtherVideoOpened){ if (anychat.GetCameraState(userid) == 2 && anychat.GetUserVideoWidth(userid) != 0){ SurfaceHolder holder = remoteSurfaceView.getHolder(); holder.setFormat(PixelFormat.RGB_565); holder.setFixedSize(anychat.GetUserVideoWidth(userid), anychat.GetUserVideoHeight(userid)); Surface s = holder.getSurface(); // 获得视频画面 anychat.SetVideoPos(userid, s, 0, 0, 0, 0); // 调用API显示视频画面 bOtherVideoOpened = true; } } if (!bSelfVideoOpened){ if (anychat.GetCameraState(-1) == 2 && anychat.GetUserVideoWidth(-1) != 0){ SurfaceHolder holder = localSurfaceView.getHolder(); holder.setFormat(PixelFormat.RGB_565); holder.setFixedSize(anychat.GetUserVideoWidth(-1), anychat.GetUserVideoHeight(-1)); Surface s = holder.getSurface(); anychat.SetVideoPos(-1, s, 0, 0, 0, 0); bSelfVideoOpened = true; } } } public void OnAnyChatConnectMessage(boolean bSuccess){ if (!bSuccess){ Toast.makeText(VideoChatActivity.this, "连接服务器失败，自动重连，请稍后...", Toast.LENGTH_SHORT).show(); } anychat.Login("android", ""); // 服务器连接成功 用户登录 } public void OnAnyChatLoginMessage(int dwUserId, int dwErrorCode){ if (dwErrorCode == 0) { Toast.makeText(this, "登录成功！", Toast.LENGTH_SHORT).show(); anychat.EnterRoom(1, ""); // 用户登录成功 进入房间 ApplyVideoConfig(); } else { Toast.makeText(this, "登录失败，错误代码：" + dwErrorCode, Toast.LENGTH_SHORT).show(); } } public void OnAnyChatEnterRoomMessage(int dwRoomId, int dwErrorCode){ if (dwErrorCode == 0) { // 进入房间成功 打开本地音视频 Toast.makeText(this, "进入房间成功", Toast.LENGTH_SHORT).show(); anychat.UserCameraControl(-1, 1); // 打开本地视频 anychat.UserSpeakControl(-1, 1); // 打开本地音频 } else { Toast.makeText(this, "进入房间失败，错误代码：" + dwErrorCode, Toast.LENGTH_SHORT).show(); } } public void OnAnyChatOnlineUserMessage(int dwUserNum, int dwRoomId){ if (dwRoomId == 1){ int user[] = anychat.GetOnlineUser(); if (user.length != 0){ for (int i = 0; i < user.length; i++){ userlist.add(user[i]+""); } String temp =userlist.get(0); userid = Integer.parseInt(temp); anychat.UserCameraControl(userid, 1);// 请求用户视频 anychat.UserSpeakControl(userid, 1); // 请求用户音频 } else { Toast.makeText(VideoChatActivity.this, "当前没有在线用户", Toast.LENGTH_SHORT).show(); } } } public void OnAnyChatUserAtRoomMessage(int dwUserId, boolean bEnter){ if (bEnter) {//新用户进入房间 userlist.add(dwUserId+""); } else { //用户离开房间 if (dwUserId == userid) { Toast.makeText(VideoChatActivity.this, "视频用户已下线", Toast.LENGTH_SHORT).show(); anychat.UserCameraControl(userid, 0);// 关闭用户视频 anychat.UserSpeakControl(userid, 0); // 关闭用户音频 userlist.remove(userid+""); //移除该用户 if (userlist.size() != 0) { String temp =userlist.get(0); userid = Integer.parseInt(temp); anychat.UserCameraControl(userid, 1);// 请求其他用户视频 anychat.UserSpeakControl(userid, 1); // 请求其他用户音频 } } else { userlist.remove(dwUserId+"");??? //移除该用户 } } } public void OnAnyChatLinkCloseMessage(int dwErrorCode){ Toast.makeText(VideoChatActivity.this, "连接关闭，error：" + dwErrorCode, Toast.LENGTH_SHORT).show(); } @Override protected void onDestroy(){ //程序退出 anychat.LeaveRoom(-1); //离开房间 anychat.Logout(); //注销登录 anychat.Release(); //释放资源 mTimer.cancel(); super.onDestroy(); } // 根据配置文件配置视频参数 private void ApplyVideoConfig(){ if (configEntity.configMode == 1) // 自定义视频参数配置 { // 设置本地视频编码的码率（如果码率为0，则表示使用质量优先模式） anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_BITRATECTRL,configEntity.videoBitrate); if (configEntity.videoBitrate == 0) { // 设置本地视频编码的质量 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_QUALITYCTRL,configEntity.videoQuality); } // 设置本地视频编码的帧率 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_FPSCTRL,configEntity.videoFps); // 设置本地视频编码的关键帧间隔 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_GOPCTRL,configEntity.videoFps * 4); // 设置本地视频采集分辨率 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_WIDTHCTRL,configEntity.resolution_width); anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_HEIGHTCTRL,configEntity.resolution_height); // 设置视频编码预设参数（值越大，编码质量越高，占用CPU资源也会越高） anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_PRESETCTRL,configEntity.videoPreset); } // 让视频参数生效 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_APPLYPARAM,configEntity.configMode); // P2P设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_NETWORK_P2PPOLITIC,configEntity.enableP2P); // 本地视频Overlay模式设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_OVERLAY,configEntity.videoOverlay); // 回音消除设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_AUDIO_ECHOCTRL,configEntity.enableAEC); // 平台硬件编码设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_CORESDK_USEHWCODEC,configEntity.useHWCodec); // 视频旋转模式设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_ROTATECTRL,configEntity.videorotatemode); // 视频平滑播放模式设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_STREAM_SMOOTHPLAYMODE,configEntity.smoothPlayMode); // 视频采集驱动设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_CAPDRIVER,configEntity.videoCapDriver); // 本地视频采集偏色修正设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_LOCALVIDEO_FIXCOLORDEVIA,configEntity.fixcolordeviation); // 视频显示驱动设置 anychat.SetSDKOptionInt(AnyChatDefine.BRAC_SO_VIDEOSHOW_DRIVERCTRL,configEntity.videoShowDriver); }}??
详细看了官方的开发文档你会发现，该Android音视频解决方案还有文字聊天、发送文件、P2P连接等非常实用的功能。对于开发者来说，能快速实现类似QQ聊天和音视频通信是令人振奋的事情。如有不懂可以加QQ讨论：992139738；附上我写的demo程序供参考学习，效果图查看图片附件