Client:<\/strong> Now you can connect to the room using token received from the server. Use the token to join the room, publish your media stream, receive other participants\u2019 media stream and perform other activities in the video conferencing session with the help of Client APIs.<\/p>\n This is how a video conferencing application works in the backend and while it may look simple, it requires a lot of things to be taken care of, including a hosting server.<\/p>\n Fortunately, we have cloud-based solutions available that provide either complete solutions or necessary toolkits to develop such video conferencing applications quickly.<\/p>\n We are going to build our application using EnableX \u2013 a cloud-based communications platform for modularly implementing various communication channels like video<\/a>\/audio<\/a>\/SMS<\/a>\/chat in your mobile application or website. Built on a carrier-grade platform, it offers developers a full stack of communications APIs<\/a> and all the necessary toolkits to develop an innovative and engaging communication experience.<\/p>\n EnableX provides Toolkits\/SDKs for web, iOS and android, hence offering a complete omni-channel and omni-device experience.<\/p>\n So, let\u2019s embark upon this journey of developing a video conferencing app in Android and turn your smartphone \u201csmarter\u201d ?.<\/p>\n The downloaded Android Toolkit\/SDK contains the following major classes that are responsible for conducting an end-to-end RTC session:<\/p>\n Learn more about EnableX basics on Enablex official developer documentation<\/a><\/p>\n Add project permissions in the \/app\/src\/main\/AndroidManifest.xml<\/strong> file for device access according to your needs:<\/p>\n Edit the \/build.gradle<\/strong> for your project and add the following code snippet to the allprojects.repositories<\/strong> section:<\/p>\n Modify \/app\/build.gradle<\/strong> for your module and add the following code snippet to the dependencies<\/strong> section:<\/p>\n As explained above, a user requires a unique Access Token to connect to a room. The token is requested by the Application Server using RESTful APIs \u2013 Server API<\/a>. Please note that you require EnableX application credentials (APP_ID and APP_KEY) to execute the following Server APIs.<\/p>\n We have provisioned a Video Room on the EnableX server and created a token to access it. Now we can implement the actual video logic in the VideoConferenceActivity<\/strong>.<\/p>\n Parameters:<\/b><\/p>\n Parameters:<\/b><\/p>\n The method joinRoom()<\/strong> returns localStream which is stored globally and needs to be published in the Room after user is successfully connected to the Room ( onRoomConnected callback<\/strong>).<\/li>\n<\/ul>\n<\/li>\n moderator is frameLayout in the VideoConferenceActivity xml.<\/li>\n Note: <\/strong>participant is frameLayout in the VideoConferenceActivity xml.<\/p>\n We have now implemented a video conferencing application which allows users to create or join a video session, see and listen to each other.<\/p>\n However, no video conferencing application is complete without the controls mentioned in the table below. While this blog focuses on the basic features to get you started and help you create a video conferencing app \u201cquickly and easily\u201d, you can still explore more features and become a Pro! I have mentioned some references towards the end of the blog.<\/p>\n Let\u2019s quickly sum up important control features in a video call:<\/p>\nUnderstanding EnableX<\/h3>\n
Prerequisites<\/h3>\n
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\nOnce registered, create a project and get App credentials containing APP_ID and APP_KEY generated against the project.<\/li>\n\n
Let\u2019s Start Building<\/h3>\n
\n
Set Up New Project<\/h4>\n
\n
Add Project Permissions<\/h4>\n
\r\n <uses-permission android:name=\"android.permission.CAMERA\" \/>\r\n <uses-permission android:name=\"android.permission.CHANGE_NETWORK_STATE\" \/>\r\n <uses-permission android:name=\"android.permission.MODIFY_AUDIO_SETTINGS\" \/>\r\n <uses-permission android:name=\"android.permission.RECORD_AUDIO\" \/>\r\n <uses-permission android:name=\"android.permission.INTERNET\" \/>\r\n <uses-permission android:name=\"android.permission.WRITE_EXTERNAL_STORAGE\" \/>\r\n <uses-permission android:name=\"android.permission.READ_EXTERNAL_STORAGE\" \/>\r\n <uses-permission android:name=\"android.permission.ACCESS_NETWORK_STATE\" \/>\r\n <!--EnableX Sdk requires Bluetooth permission incase users are using Bluetooth devices-->\r\n \r\n <uses-permission android:name=\"android.permission.BLUETOOTH\" \/>\r\n <uses-permission android:name=\"android.permission.BLUETOOTH_ADMIN\" \/> \r\n <!--EnableX Sdk requires wakelock permission incase users are using proximity sensor--> \r\n \r\n <uses-permission android:name=\"android.permission.WAKE_LOCK\" \/>\r\n \r\n <uses-permission android:name=\"android.permission.FOREGROUND_SERVICE\" \/>\r\n <\/code><\/pre>\n<\/li>\nIntegrate the SDK<\/h4>\n
\r\n allprojects {\r\n repositories {\r\n maven {\r\n url \"https:\/\/dl.bintray.com\/enablex\/maven\" \r\n }\r\n }\r\n }\r\n \r\n <\/code><\/pre>\n dependencies {\r\n ...\r\n \/\/EnableX SDK for audio and video call\r\n implementation 'com.enxrtc:Enx-Rtc-Android:1.8.2'\r\n }\r\n \r\n<\/pre>\n<\/li>\nGenerate Access Token<\/h4>\n
\n
Start Video Call<\/h4>\n
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![\"\"](\"https:\/\/enablex23.vcloudx.com\/insights\/wp-content\/uploads\/2021\/05\/Android.jpg\")
<\/li>\n\n
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\nCreate an instance of EnxRtc Class to initialize the EnableX SDK.<\/p>\n\r\n EnxRtc mEnxRtc = new EnxRtc(activity, mEnxRoomObserver,\r\n mEnxStreamObserver);\r\n <\/code><\/pre>\n\n
\nExecute joinRoom() method on enxrtc instance to join the video conference. JoinRoom() method returns local stream instance which is used to publish the user\u2019s local media in the Room. This basically means that once the user has joined the video conference, her video\/audio stream becomes available to everyone in the conference.<\/p>\n\r\n EnxStream localStream = enxRtc.joinRoom(mToken, mPublishStreamInfo, mRoomInfo, mAdvanceOptionsInfo);\r\n <\/code><\/pre>\n\n
{\r\n \"audio\": true,\r\n \"video\": true,\r\n \"data\": true,\r\n \"framerate\": 30,\r\n \"videoSize\": {\r\n \"minWidth\": 320,\r\n \"minHeight\": 180,\r\n \"maxWidth\": 1280,\r\n \"maxHeight\": 720\r\n },\r\n \"audioMuted\": false,\r\n \"videoMuted\": false,\r\n \"name\": \"shashank\",\r\n \"audioOnlyMode\": false\r\n }\r\n <\/code><\/pre>\n<\/li>\n\r\n {\r\n \"allow_reconnect\": true,\r\n \"number_of_attempts\": 3,\r\n \"timeout_interval\": 15,\r\n \"activeviews\": \"view\",\r\n \"playerConfiguration\": {\r\n \"audiomute\": true,\r\n \"videomute\": true,\r\n \"bandwidth\": true,\r\n \"screenshot\": true,\r\n \"avatar\": true,\r\n \"pinned\": true,\r\n \"iconColor\": -1237980,\r\n \"iconHeight\": 30,\r\n \"iconWidth\": 30,\r\n \"avatarHeight\": 200,\r\n \"avatarWidth\": 200\r\n },\r\n \"forceTurn\": false,\r\n \"chat_only\": false\r\n }\r\n \r\n <\/code><\/pre>\n<\/li>\n\r\n [\r\n {\r\n \"id\": \"battery_updates\",\r\n \"enable\": true\r\n },\r\n {\r\n \"id\": \"notify-video-resolution-change\",\r\n \"enable\": true\r\n }\r\n ]\r\n <\/code><\/pre>\n
\nTo start a local video (that is to see yourself on the screen), you need to get enxplayerview instance from local stream and add this enxplayerview into your view which is defined in xml.<\/p>\n\r\n EnxPlayerView localvideo = localStream.mEnxPlayerView\r\n moderator.addView(localvideo)\r\n <\/code><\/pre>\n
\nUse enxRoom.publish(localStream)<\/strong> method to publish local stream to the connected roomAfter the user is connected to the Room, you can call the publish ()<\/strong> method in the callback onRoomConnected(EnxRoom enxRoom, JSONObject roomMetaData)<\/strong>Once the local stream is published to the Room, all participants are notified with callback onStreamAdded(EnxStream stream)<\/strong><\/p>\nenxRoom.publish(localStream);<\/code><\/pre>\n<\/li>\n
\nSo far, we have ensured that the user is connected to the Room and has published his\/her local stream in the Room. Now the user must also receive media stream from other participants connected to the Room.They must subscribe to each stream individually to receive it.The publish ()<\/strong> method triggers a callback onStreamAdded(EnxStream stream)<\/strong> notifying everyone that a new stream has entered the Room so to receive the stream you need to subscribe it using subscribe(remotestream)<\/strong> method.<\/p>\n\r\n enxRoom.subscribe(stream);\r\n <\/code><\/pre>\n<\/li>\n
\nEnableX SDK provides pre-defined Video Grid for playing all the Remote Streams received at the Client end point.The RecyclerView allows you to play the most active media streams (Active Talkers in the Room) in a rotating manner. The VideoConferenceActivity <\/strong> needs to implement EnxActiveTalkerViewObserver<\/strong> and set observer to handle active talker view by calling
\nenxRoom.setActiveTalkerViewObserver(EnxActiveTalkerViewObserver enxActiveTalkerViewObserver)<\/strong><\/p>\n\r\n public class VideoConferenceActivity extends AppCompatActivity \r\n implements EnxActiveTalkerViewObserver{\r\n \r\n @Override\r\n public void onActiveTalkerList(RecyclerView recyclerView) {\r\n \r\n if (recyclerView == null) {\r\n participant.removeAllViews();\r\n } else{\r\n participant.addView(recyclerView);\r\n }\r\n }\r\n }\r\n <\/code><\/pre>\n