如何解决如何有多个人可以加入同一频道，以便我们在Agora Android中拥有两个远程视图和一个本地视图？
我正在将Agora用于视频通话功能。我已针对1-1视频通话运行agora的示例代码，引用了此代码-https://docs.agora.io/en/Video/start_call_android?platform=Android
在示例中，我们有一个本地视图和一个远程视图，这很好用。现在，我想显示两个远程视图和一个本地视图。为此，我创建了具有两个远程视图和一个本地视图的布局。
也在onFirstRemoteVideoDecoded方法中，我检查是否添加了第一个远程视图，然后设置了第一个远程视图，否则设置了第二个远程视图。留给用户时，它与onUserOffline相同。我检查了是否记录了运行方法onRemoteUserLeft（）或onRemoteUserLeft1（）的第一个远程视图，该方法删除了相关视图。
要加入该频道，我提供了相同的频道名称和不同的令牌
`
var token1: String? = ("<token-string>")
if (token1!!.isEmpty()) {
token1 = null
}
mRtcEngine!!.joinChannel(
token1,"67124678","null",0
)
我有一个提供频道名称和相关令牌的链接。 https://mobile.quirkysemicolon.com/getTokens.php
我对如何在应用程序中使用此链接来加入同一频道上的多个用户感到困惑。
有人可以建议我如何实现此功能吗？
这是我的布局：
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent">
<FrameLayout
android:id="@+id/remote_video_view_container"
android:layout_width="0dp"
android:layout_height="284dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:background="@android:color/darker_gray"
app:layout_constraintEnd_toStartOf="@+id/remote1_video_view_container"
app:layout_constraintHorizontal_chainStyle="spread_inside"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<FrameLayout
android:id="@+id/remote1_video_view_container"
android:layout_width="0dp"
android:layout_height="284dp"
android:layout_alignParentTop="true"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:background="@android:color/darker_gray"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/remote_video_view_container"
app:layout_constraintTop_toTopOf="parent" />
<FrameLayout
android:id="@+id/local_video_view_container"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/white"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toEndOf="@+id/container"
app:layout_constraintTop_toBottomOf="@+id/remote1_video_view_container" />
<RelativeLayout
android:id="@+id/container"
android:layout_width="0dp"
android:layout_height="0dp"
android:background="@android:color/white"
android:padding="20dp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintEnd_toStartOf="@+id/local_video_view_container"
app:layout_constraintHorizontal_chainStyle="spread_inside"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/remote1_video_view_container">
<TextView
android:id="@+id/textView2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_alignParentRight="true"
android:layout_gravity="center_horizontal"
android:layout_marginTop="20dp"
android:textSize="18sp"
android:textColor="@android:color/black"
android:text="Channel :" />
<Button
android:id="@+id/button"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Start"
android:textColor="@android:color/white"
android:background="@android:color/holo_green_dark"
android:layout_marginTop="20dp"
android:layout_gravity="center_horizontal"
android:layout_below="@id/textView2"/>
<Button
android:id="@+id/button2"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="End"
android:onClick="onEndCallClicked"
android:textColor="@android:color/white"
android:background="@android:color/holo_red_dark"
android:layout_marginTop="20dp"
android:layout_gravity="center_horizontal"
android:layout_below="@id/button"/>
<TextView
android:id="@+id/textView5"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/button2"
android:layout_marginTop="20dp"
android:textSize="18sp"
android:textColor="@android:color/black"
android:layout_gravity="center_horizontal"
android:text="Token(Push Notify) : " />
</RelativeLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
这是我的活动
class MultipleRemoteViewActivity: AppCompatActivity() {
private var mRtcEngine: RtcEngine? = null
private var mReceiver: BroadcastReceiver? = null
var mIntentFilter: IntentFilter? = null
var mIsRemote1Joined: Boolean = false
var mIsRemote1Left: Boolean = false
private val mRtcEventHandler = object : IRtcEngineEventHandler() {
/**
* Occurs when the first remote video frame is received and decoded.
* This callback is triggered in either of the following scenarios:
*
* The remote user joins the channel and sends the video stream.
* The remote user stops sending the video stream and re-sends it after 15 seconds. Possible reasons include:
* The remote user leaves channel.
* The remote user drops offline.
* The remote user calls the muteLocalVideoStream method.
* The remote user calls the disableVideo method.
*
* @param uid User ID of the remote user sending the video streams.
* @param width Width (pixels) of the video stream.
* @param height Height (pixels) of the video stream.
* @param elapsed Time elapsed (ms) from the local user calling the joinChannel method until this callback is triggered.
*/
override fun onFirstRemoteVideoDecoded(uid: Int,width: Int,height: Int,elapsed: Int) {
runOnUiThread {
if(!mIsRemote1Joined)
setupRemoteVideo(uid)
else
setupRemoteVideo1(uid)
}
}
override fun onUserOffline(uid: Int,reason: Int) {
runOnUiThread {
if(!mIsRemote1Left)
onRemoteUserLeft()
else
onRemoteUserLeft1()
}
}
override fun onUserMuteVideo(uid: Int,muted: Boolean) {
runOnUiThread { onRemoteUserVideoMuted(uid,muted) }
}
}
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.multiple_remoteview_layout)
if (checkSelfPermission(Manifest.permission.RECORD_AUDIO,MultipleRemoteViewActivity.PERMISSION_REQ_ID_RECORD_AUDIO
) && checkSelfPermission(
Manifest.permission.CAMERA,MultipleRemoteViewActivity.PERMISSION_REQ_ID_CAMERA
)) {
initAgoraEngineAndJoinChannel()
}
}
private fun initAgoraEngineAndJoinChannel() {
initializeAgoraEngine()
}
private fun checkSelfPermission(permission: String,requestCode: Int): Boolean {
Log.i(MultipleRemoteViewActivity.LOG_TAG,"checkSelfPermission $permission $requestCode")
if (ContextCompat.checkSelfPermission(
this,permission
) != PackageManager.PERMISSION_GRANTED) {
ActivityCompat.requestPermissions(
this,arrayOf(permission),requestCode
)
return false
}
return true
}
override fun onRequestPermissionsResult(
requestCode: Int,permissions: Array<String>,grantResults: IntArray
) {
Log.i(MultipleRemoteViewActivity.LOG_TAG,"onRequestPermissionsResult " + grantResults[0] + " " + requestCode)
when (requestCode) {
MultipleRemoteViewActivity.PERMISSION_REQ_ID_RECORD_AUDIO -> {
if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
checkSelfPermission(Manifest.permission.CAMERA,MultipleRemoteViewActivity.PERMISSION_REQ_ID_CAMERA
)
} else {
showLongToast("No permission for " + Manifest.permission.RECORD_AUDIO)
finish()
}
}
MultipleRemoteViewActivity.PERMISSION_REQ_ID_CAMERA -> {
if (grantResults.isNotEmpty() && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
initAgoraEngineAndJoinChannel()
} else {
showLongToast("No permission for " + Manifest.permission.CAMERA)
finish()
}
}
}
}
private fun showLongToast(msg: String) {
this.runOnUiThread { Toast.makeText(applicationContext,msg,Toast.LENGTH_LONG).show() }
}
override fun onDestroy() {
super.onDestroy()
leaveChannel()
/*
Destroys the RtcEngine instance and releases all resources used by the Agora SDK.
This method is useful for apps that occasionally make voice or video calls,to free up resources for other operations when not making calls.
*/
RtcEngine.destroy()
mRtcEngine = null
}
fun onLocalVideoMuteClicked(view: View) {
/* val iv = view as ImageView
if (iv.isSelected) {
iv.isSelected = false
iv.clearColorFilter()
} else {
iv.isSelected = true
iv.setColorFilter(resources.getColor(R.color.colorPrimary),PorterDuff.Mode.MULTIPLY)
}
// Stops/Resumes sending the local video stream.
mRtcEngine!!.muteLocalVideoStream(iv.isSelected)*/
val container = findViewById(R.id.local_video_view_container) as FrameLayout
val surfaceView = container.getChildAt(0) as SurfaceView
// surfaceView.setZOrderMediaOverlay(!iv.isSelected) // surfaceView.visibility = if (iv.isSelected) View.GONE else View.VISIBLE
}
/* fun onLocalAudioMuteClicked(view: View) {
val iv = view as ImageView
if (iv.isSelected) {
iv.isSelected = false
iv.clearColorFilter()
} else {
iv.isSelected = true
iv.setColorFilter(resources.getColor(R.color.colorPrimary),PorterDuff.Mode.MULTIPLY)
}
// Stops/Resumes sending the local audio stream.
mRtcEngine!!.muteLocalAudioStream(iv.isSelected)
}*/
/*
fun onSwitchCameraClicked(view: View) {
// Switches between front and rear cameras.
mRtcEngine!!.switchCamera()
}
*/
fun onEndCallClicked(view: View) {
finish()
}
private fun initializeAgoraEngine() {
try {
mRtcEngine = RtcEngine.create(
baseContext,getString(R.string.agora_app_id),mRtcEventHandler
)
setupVideoProfile()
setupLocalVideo()
joinChannel()
} catch (e: Exception) {
Log.e(MultipleRemoteViewActivity.LOG_TAG,Log.getStackTraceString(e))
throw RuntimeException(
"NEED TO check rtc sdk init fatal error\n" + Log.getStackTraceString(e)
)
}
}
private fun setupVideoProfile() {
// In simple use cases,we only need to enable video capturing
// and rendering once at the initialization step.
// Note: audio recording and playing is enabled by default.
mRtcEngine!!.enableVideo()
// mRtcEngine!!.setVideoProfile(Constants.VIDEO_PROFILE_360P,false) // Earlier than 2.3.0
// Please go to this page for detailed explanation
// https://docs.agora.io/en/Video/API%20Reference/java/classio_1_1agora_1_1rtc_1_1_rtc_engine.html#af5f4de754e2c1f493096641c5c5c1d8f
mRtcEngine!!.setVideoEncoderConfiguration(
VideoEncoderConfiguration(
VideoEncoderConfiguration.VD_640x360,VideoEncoderConfiguration.FRAME_RATE.FRAME_RATE_FPS_15,VideoEncoderConfiguration.STANDARD_BITRATE,VideoEncoderConfiguration.ORIENTATION_MODE.ORIENTATION_MODE_FIXED_PORTRAIT
)
)
}
private fun setupLocalVideo() {
val container = findViewById(R.id.local_video_view_container) as FrameLayout
val surfaceView = RtcEngine.CreateRendererView(baseContext)
surfaceView.setZOrderMediaOverlay(true)
container.addView(surfaceView)
// Initializes the local video view.
// RENDER_MODE_FIT: Uniformly scale the video until one of its dimension fits the boundary. Areas that are not filled due to the disparity in the aspect ratio are filled with black.
mRtcEngine!!.setupLocalVideo(VideoCanvas(surfaceView,VideoCanvas.RENDER_MODE_FIT,0))
}
private fun joinChannel() {
// 1. Users can only see each other after they join the
// same channel successfully using the same app id.
// 2. One token is only valid for the channel name that
// you use to generate this token.
var token: String? = getString(R.string.agora_access_token)
if (token!!.isEmpty()) {
token = null
}
mRtcEngine!!.joinChannel(
token,0
) // if you do not specify the uid,we will generate the uid for you
var token1: String? = ("<token-string>")
if (token1!!.isEmpty()) {
token1 = null
}
mRtcEngine!!.joinChannel(
token1,0
) // if you do not specify the uid,we will generate the uid for you
}
private fun setupRemoteVideo(uid: Int) {
// Only one remote video view is available for this
// tutorial. Here we check if there exists a surface
// view tagged as this uid.
val container = findViewById(R.id.remote_video_view_container) as FrameLayout
if (container.childCount >= 1) {
return
}
/*
Creates the video renderer view.
CreateRendererView returns the SurfaceView type. The operation and layout of the view
are managed by the app,and the Agora SDK renders the view provided by the app.
The video display view must be created using this method instead of directly
calling SurfaceView.
*/
val surfaceView = RtcEngine.CreateRendererView(baseContext)
container.addView(surfaceView)
// Initializes the video view of a remote user.
mRtcEngine!!.setupRemoteVideo(VideoCanvas(surfaceView,uid))
surfaceView.tag = uid // for mark purpose
mIsRemote1Joined = true
// val tipMsg = findViewById<TextView>(R.id.quick_tips_when_use_agora_sdk) // optional UI
// tipMsg.visibility = View.GONE
}
private fun setupRemoteVideo1(uid: Int) {
// Only one remote video view is available for this
// tutorial. Here we check if there exists a surface
// view tagged as this uid.
val container1 = findViewById(R.id.remote1_video_view_container) as FrameLayout
if (container1.childCount >= 1) {
return
}
/*
Creates the video renderer view.
CreateRendererView returns the SurfaceView type. The operation and layout of the view
are managed by the app,and the Agora SDK renders the view provided by the app.
The video display view must be created using this method instead of directly
calling SurfaceView.
*/
val surfaceView1 = RtcEngine.CreateRendererView(baseContext)
container1.addView(surfaceView1)
// Initializes the video view of a remote user.
mRtcEngine!!.setupRemoteVideo(VideoCanvas(surfaceView1,uid))
surfaceView1.tag = uid // for mark purpose
// val tipMsg = findViewById<TextView>(R.id.quick_tips_when_use_agora_sdk) // optional UI
// tipMsg.visibility = View.GONE
}
private fun leaveChannel() {
mRtcEngine!!.leaveChannel()
}
private fun onRemoteUserLeft() {
val container = findViewById(R.id.remote_video_view_container) as FrameLayout
container.removeAllViews()
mIsRemote1Left = true
}
private fun onRemoteUserLeft1() {
val container1 = findViewById(R.id.remote1_video_view_container) as FrameLayout
container1.removeAllViews()
}
private fun onRemoteUserVideoMuted(uid: Int,muted: Boolean) {
val container = findViewById(R.id.remote_video_view_container) as FrameLayout
val surfaceView = container.getChildAt(0) as? SurfaceView
val tag = surfaceView?.tag
if (tag != null && tag as Int == uid) {
surfaceView.visibility = if (muted) View.GONE else View.VISIBLE
}
val container1 = findViewById(R.id.remote1_video_view_container) as FrameLayout
val surfaceView1 = container1.getChildAt(0) as? SurfaceView
val tag1 = surfaceView1?.tag
if (tag1 != null && tag1 as Int == uid) {
surfaceView1.visibility = if (muted) View.GONE else View.VISIBLE
}
}
companion object {
private val LOG_TAG = MultipleRemoteViewActivity::class.java.simpleName
private const val PERMISSION_REQ_ID_RECORD_AUDIO = 22
private const val PERMISSION_REQ_ID_CAMERA = PERMISSION_REQ_ID_RECORD_AUDIO + 1
}
}
现在我的代码问题是：我在三个设备上以相同的应用程序ID加入同一频道，一个是Web chrome应用程序，另外两个在android设备上。当我从两台设备加入时，我可以看到一个远程视图和一个本地视图，但是当这三个设备已加入同一频道时，如果其中一台设备离开了频道，则这两个远程视图都将停止工作并且无法加入同一频道再次。
请提出解决方案...
解决方法
您可以查看我们的小组视频示例应用程序以供参考：https://github.com/AgoraIO/Basic-Video-Call/tree/master/Group-Video/OpenVideoCall-Android
通常，如果要让多个人加入同一频道，则需要确保他们具有相同的应用ID和频道名称。
关于令牌，要加入频道的每个用户都需要有单独的UID，这也意味着他们的令牌会有所不同。
因此工作流程将如下所示：
用户A要加入通道->用户A向后端发送请求->服务器生成一个随机UID并使用该令牌生成新令牌->服务器返回生成的UID和令牌->用户A使用这些凭据来加入频道
加入该频道的每个后续用户都将使用相同的工作流程。 请记住，对于此工作流程，UID是由您自己生成的，而不是由Agora随机生成的（即，您不应像完成操作那样将0作为UID传递）。
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