Changes to reflect new conference API

Should fix various conference UI issues

More UI fixes related to conference

Fixes & improvements

Fixed remove participant button invisible in dark mode

API changes

Handle conference enter and leave

Fixed conference UI issues

Small UI improvements

Improve logging

Improved paused conference cell

Use isMe if participant added or removed is focus

Update method names after changes to conference API

app/build.gradle

@@ -203,11 +203,17 @@ repositories {
     maven {
         name "local linphone-sdk maven repository"
         url file(LinphoneSdkBuildDir + '/maven_repository/')
+        content {
+            includeGroup "org.linphone"
+        }
     }
 
     maven {
         name "linphone.org maven repository"
         url "https://linphone.org/maven_repository"
+        content {
+            includeGroup "org.linphone"
+        }
     }
 }
 

app/src/main/java/org/linphone/activities/call/ProximitySensorActivity.kt

@@ -39,7 +39,7 @@ abstract class ProximitySensorActivity : GenericActivity() {
         override fun onAccuracyChanged(sensor: Sensor?, accuracy: Int) { }
 
         override fun onSensorChanged(event: SensorEvent) {
-            if (event.timestamp == 0L) return
+            if (event.timestamp == 0L || !proximitySensorEnabled) return
             if (isProximitySensorNearby(event)) {
                 if (!proximityWakeLock.isHeld) {
                     Log.i("[Proximity Sensor Activity] Acquiring proximity wake lock")
@@ -89,6 +89,12 @@ abstract class ProximitySensorActivity : GenericActivity() {
         super.onPause()
     }
 
+    override fun onDestroy() {
+        enableProximitySensor(false)
+
+        super.onDestroy()
+    }
+
     protected fun enableProximitySensor(enable: Boolean) {
         if (!proximitySensorFound) {
             Log.w("[Proximity Sensor Activity] Couldn't find proximity sensor in this device, skipping")

app/src/main/java/org/linphone/activities/call/fragments/ControlsFragment.kt

@@ -35,6 +35,7 @@ import org.linphone.LinphoneApplication.Companion.corePreferences
 import org.linphone.R
 import org.linphone.activities.GenericFragment
 import org.linphone.activities.call.viewmodels.CallsViewModel
+import org.linphone.activities.call.viewmodels.ConferenceViewModel
 import org.linphone.activities.call.viewmodels.ControlsViewModel
 import org.linphone.activities.call.viewmodels.SharedCallViewModel
 import org.linphone.activities.main.MainActivity
@@ -51,6 +52,7 @@ import org.linphone.utils.PermissionHelper
 class ControlsFragment : GenericFragment<CallControlsFragmentBinding>() {
     private lateinit var callsViewModel: CallsViewModel
     private lateinit var controlsViewModel: ControlsViewModel
+    private lateinit var conferenceViewModel: ConferenceViewModel
     private lateinit var sharedViewModel: SharedCallViewModel
 
     private var dialog: Dialog? = null
@@ -75,6 +77,9 @@ class ControlsFragment : GenericFragment<CallControlsFragmentBinding>() {
         controlsViewModel = ViewModelProvider(this).get(ControlsViewModel::class.java)
         binding.controlsViewModel = controlsViewModel
 
+        conferenceViewModel = ViewModelProvider(this).get(ConferenceViewModel::class.java)
+        binding.conferenceViewModel = conferenceViewModel
+
         callsViewModel.currentCallViewModel.observe(viewLifecycleOwner, {
             if (it != null) {
                 binding.activeCallTimer.base =

app/src/main/java/org/linphone/activities/call/viewmodels/CallsViewModel.kt

@@ -22,9 +22,8 @@ package org.linphone.activities.call.viewmodels
 import androidx.lifecycle.MutableLiveData
 import androidx.lifecycle.ViewModel
 import org.linphone.LinphoneApplication.Companion.coreContext
-import org.linphone.core.Call
+import org.linphone.core.*
-import org.linphone.core.Core
+import org.linphone.core.tools.Log
-import org.linphone.core.CoreListenerStub
 import org.linphone.utils.Event
 import org.linphone.utils.PermissionHelper
 
@@ -35,10 +34,6 @@ class CallsViewModel : ViewModel() {
 
     val pausedCalls = MutableLiveData<ArrayList<CallViewModel>>()
 
-    val conferenceCalls = MutableLiveData<ArrayList<CallViewModel>>()
-
-    val isConferencePaused = MutableLiveData<Boolean>()
-
     val noMoreCallEvent: MutableLiveData<Event<Boolean>> by lazy {
         MutableLiveData<Event<Boolean>>()
     }
@@ -52,14 +47,9 @@ class CallsViewModel : ViewModel() {
     }
 
     private val listener = object : CoreListenerStub() {
-        override fun onCallStateChanged(
+        override fun onCallStateChanged(core: Core, call: Call, state: Call.State, message: String) {
-            core: Core,
+            Log.i("[Calls VM] Call state changed: $state")
-            call: Call,
+            callPausedByRemote.value = (state == Call.State.PausedByRemote) and (call.conference == null)
-            state: Call.State,
-            message: String
-        ) {
-            callPausedByRemote.value = state == Call.State.PausedByRemote
-            isConferencePaused.value = !coreContext.core.isInConference
 
             val currentCall = core.currentCall
             if (currentCall == null) {
@@ -71,14 +61,11 @@ class CallsViewModel : ViewModel() {
             if (state == Call.State.End || state == Call.State.Released || state == Call.State.Error) {
                 if (core.callsNb == 0) {
                     noMoreCallEvent.value = Event(true)
-                    conferenceCalls.value = arrayListOf()
                 } else {
                     removeCallFromPausedListIfPresent(call)
-                    removeCallFromConferenceIfPresent(call)
                 }
             } else if (state == Call.State.Paused) {
                 addCallToPausedList(call)
-                removeCallFromConferenceIfPresent(call)
             } else if (state == Call.State.Resuming) {
                 removeCallFromPausedListIfPresent(call)
             } else if (call.state == Call.State.UpdatedByRemote) {
@@ -91,17 +78,9 @@ class CallsViewModel : ViewModel() {
                     call.deferUpdate()
                     callUpdateEvent.value = Event(call)
                 }
-            } else {
+            } else if (state == Call.State.StreamsRunning) {
-                if (state == Call.State.StreamsRunning) {
                 callUpdateEvent.value = Event(call)
             }
-
-                if (call.conference != null) {
-                    addCallToConferenceListIfNotAlreadyInIt(call)
-                } else {
-                    removeCallFromConferenceIfPresent(call)
-                }
-            }
         }
     }
 
@@ -112,21 +91,15 @@ class CallsViewModel : ViewModel() {
         if (currentCall != null) {
             currentCallViewModel.value = CallViewModel(currentCall)
         }
-        callPausedByRemote.value = currentCall?.state == Call.State.PausedByRemote
-        isConferencePaused.value = !coreContext.core.isInConference
 
-        val conferenceList = arrayListOf<CallViewModel>()
+        callPausedByRemote.value = currentCall?.state == Call.State.PausedByRemote
+
         for (call in coreContext.core.calls) {
             if (call.state == Call.State.Paused || call.state == Call.State.Pausing) {
                 addCallToPausedList(call)
-            } else {
-                if (call.conference != null) {
-                    conferenceList.add(CallViewModel(call))
             }
         }
     }
-        conferenceCalls.value = conferenceList
-    }
 
     override fun onCleared() {
         coreContext.core.removeListener(listener)
@@ -138,20 +111,6 @@ class CallsViewModel : ViewModel() {
         coreContext.answerCallVideoUpdateRequest(call, accept)
     }
 
-    fun pauseConference() {
-        if (coreContext.core.isInConference) {
-            coreContext.core.leaveConference()
-            isConferencePaused.value = true
-        }
-    }
-
-    fun resumeConference() {
-        if (!coreContext.core.isInConference) {
-            coreContext.core.enterConference()
-            isConferencePaused.value = false
-        }
-    }
-
     fun takeScreenshot() {
         if (!PermissionHelper.get().hasWriteExternalStorage()) {
             askWriteExternalStoragePermissionEvent.value = Event(true)
@@ -161,9 +120,17 @@ class CallsViewModel : ViewModel() {
     }
 
     private fun addCallToPausedList(call: Call) {
+        if (call.conference != null) return // Conference will be displayed as paused, no need to display the call as well
+
         val list = arrayListOf<CallViewModel>()
         list.addAll(pausedCalls.value.orEmpty())
 
+        for (pausedCallViewModel in list) {
+            if (pausedCallViewModel.call == call) {
+                return
+            }
+        }
+
         val viewModel = CallViewModel(call)
         list.add(viewModel)
         pausedCalls.value = list
@@ -182,31 +149,4 @@ class CallsViewModel : ViewModel() {
 
         pausedCalls.value = list
     }
-
-    private fun addCallToConferenceListIfNotAlreadyInIt(call: Call) {
-        val list = arrayListOf<CallViewModel>()
-        list.addAll(conferenceCalls.value.orEmpty())
-
-        for (viewModel in list) {
-            if (viewModel.call == call) return
-        }
-
-        val viewModel = CallViewModel(call)
-        list.add(viewModel)
-        conferenceCalls.value = list
-    }
-
-    private fun removeCallFromConferenceIfPresent(call: Call) {
-        val list = arrayListOf<CallViewModel>()
-        list.addAll(conferenceCalls.value.orEmpty())
-
-        for (viewModel in list) {
-            if (viewModel.call == call) {
-                list.remove(viewModel)
-                break
-            }
-        }
-
-        conferenceCalls.value = list
-    }
 }

app/src/main/java/org/linphone/activities/call/viewmodels/ConferenceParticipantViewModel.kt

@@ -0,0 +1,47 @@
+/*
+ * Copyright (c) 2010-2020 Belledonne Communications SARL.
+ *
+ * This file is part of linphone-android
+ * (see https://www.linphone.org).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.linphone.activities.call.viewmodels
+
+import androidx.lifecycle.MutableLiveData
+import org.linphone.contact.GenericContactViewModel
+import org.linphone.core.Conference
+import org.linphone.core.Participant
+import org.linphone.core.tools.Log
+
+class ConferenceParticipantViewModel(
+    private val conference: Conference,
+    val participant: Participant
+) :
+    GenericContactViewModel(participant.address) {
+    private val isAdmin = MutableLiveData<Boolean>()
+    val isMeAdmin = MutableLiveData<Boolean>()
+
+    init {
+        isAdmin.value = participant.isAdmin
+        isMeAdmin.value = conference.me.isAdmin
+        Log.i("[Conference Participant VM] Participant ${participant.address.asStringUriOnly()} is ${if (participant.isAdmin) "admin" else "not admin"}")
+        Log.i("[Conference Participant VM] Me is ${if (conference.me.isAdmin) "admin" else "not admin"} and is ${if (conference.me.isFocus) "focus" else "not focus"}")
+    }
+
+    fun removeFromConference() {
+        Log.i("[Conference Participant VM] Removing participant ${participant.address.asStringUriOnly()} from conference $conference")
+        conference.removeParticipant(participant)
+    }
+}

app/src/main/java/org/linphone/activities/call/viewmodels/ConferenceViewModel.kt

@@ -0,0 +1,156 @@
+/*
+ * Copyright (c) 2010-2020 Belledonne Communications SARL.
+ *
+ * This file is part of linphone-android
+ * (see https://www.linphone.org).
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+package org.linphone.activities.call.viewmodels
+
+import androidx.lifecycle.MutableLiveData
+import androidx.lifecycle.ViewModel
+import org.linphone.LinphoneApplication.Companion.coreContext
+import org.linphone.core.*
+import org.linphone.core.tools.Log
+
+class ConferenceViewModel : ViewModel() {
+    val isConferencePaused = MutableLiveData<Boolean>()
+
+    val isMeConferenceFocus = MutableLiveData<Boolean>()
+
+    val conferenceAddress = MutableLiveData<Address>()
+
+    val conferenceParticipants = MutableLiveData<List<ConferenceParticipantViewModel>>()
+
+    val isInConference = MutableLiveData<Boolean>()
+
+    private val conferenceListener = object : ConferenceListenerStub() {
+        override fun onParticipantAdded(conference: Conference, participant: Participant) {
+            if (conference.isMe(participant.address)) {
+                Log.i("[Conference VM] Entered conference")
+                isConferencePaused.value = false
+            } else {
+                Log.i("[Conference VM] Participant added")
+                updateParticipantsList(conference)
+            }
+        }
+
+        override fun onParticipantRemoved(conference: Conference, participant: Participant) {
+            if (conference.isMe(participant.address)) {
+                Log.i("[Conference VM] Left conference")
+                isConferencePaused.value = true
+            } else {
+                Log.i("[Conference VM] Participant removed")
+                updateParticipantsList(conference)
+            }
+        }
+
+        override fun onParticipantAdminStatusChanged(
+            conference: Conference,
+            participant: Participant
+        ) {
+            Log.i("[Conference VM] Participant admin status changed")
+            updateParticipantsList(conference)
+        }
+    }
+
+    private val listener = object : CoreListenerStub() {
+        override fun onConferenceStateChanged(
+            core: Core,
+            conference: Conference,
+            state: Conference.State
+        ) {
+            Log.i("[Conference VM] Conference state changed: $state")
+            isConferencePaused.value = !conference.isIn
+
+            if (state == Conference.State.Instantiated) {
+                conference.addListener(conferenceListener)
+            } else if (state == Conference.State.Created) {
+                updateParticipantsList(conference)
+                isMeConferenceFocus.value = conference.me.isFocus
+                conferenceAddress.value = conference.conferenceAddress
+            } else if (state == Conference.State.Terminated || state == Conference.State.TerminationFailed) {
+                isInConference.value = false
+                conference.removeListener(conferenceListener)
+                conferenceParticipants.value = arrayListOf()
+            }
+        }
+    }
+
+    init {
+        coreContext.core.addListener(listener)
+
+        isConferencePaused.value = coreContext.core.conference?.isIn != true
+        isMeConferenceFocus.value = false
+        conferenceParticipants.value = arrayListOf()
+        isInConference.value = false
+
+        val conference = coreContext.core.conference
+        if (conference != null) {
+            conference.addListener(conferenceListener)
+            isMeConferenceFocus.value = conference.me.isFocus
+            updateParticipantsList(conference)
+        }
+    }
+
+    override fun onCleared() {
+        coreContext.core.removeListener(listener)
+
+        super.onCleared()
+    }
+
+    fun pauseConference() {
+        val defaultProxyConfig = coreContext.core.defaultProxyConfig
+        val localAddress = defaultProxyConfig?.identityAddress
+        val participants = arrayOf<Address>()
+        val remoteConference = coreContext.core.searchConference(null, localAddress, conferenceAddress.value, participants)
+        val localConference = coreContext.core.searchConference(null, conferenceAddress.value, conferenceAddress.value, participants)
+        val conference = remoteConference ?: localConference
+
+        if (conference != null) {
+            Log.i("[Conference VM] Leaving conference with address ${conferenceAddress.value?.asStringUriOnly()} temporarily")
+            conference.leave()
+        } else {
+            Log.w("[Conference VM] Unable to find conference with address ${conferenceAddress.value?.asStringUriOnly()}")
+        }
+    }
+
+    fun resumeConference() {
+        val defaultProxyConfig = coreContext.core.defaultProxyConfig
+        val localAddress = defaultProxyConfig?.identityAddress
+        val participants = arrayOf<Address>()
+        val remoteConference = coreContext.core.searchConference(null, localAddress, conferenceAddress.value, participants)
+        val localConference = coreContext.core.searchConference(null, conferenceAddress.value, conferenceAddress.value, participants)
+        val conference = remoteConference ?: localConference
+
+        if (conference != null) {
+            Log.i("[Conference VM] Entering again conference with address ${conferenceAddress.value?.asStringUriOnly()}")
+            conference.enter()
+        } else {
+            Log.w("[Conference VM] Unable to find conference with address ${conferenceAddress.value?.asStringUriOnly()}")
+        }
+    }
+
+    private fun updateParticipantsList(conference: Conference) {
+        val participants = arrayListOf<ConferenceParticipantViewModel>()
+        for (participant in conference.participantList) {
+            Log.i("[Conference VM] Participant found: ${participant.address.asStringUriOnly()}")
+            val viewModel = ConferenceParticipantViewModel(conference, participant)
+            participants.add(viewModel)
+        }
+        conferenceParticipants.value = participants
+        isInConference.value = participants.isNotEmpty()
+    }
+}

app/src/main/java/org/linphone/activities/call/viewmodels/ControlsViewModel.kt

@@ -285,8 +285,8 @@ class ControlsViewModel : ViewModel() {
 
         if (conference != null && core.isInConference) {
             val params = core.createConferenceParams()
-            val videoEnabled = conference.currentParams.videoEnabled()
+            val videoEnabled = conference.currentParams.isVideoEnabled
-            params.enableVideo(!videoEnabled)
+            params.isVideoEnabled = !videoEnabled
             Log.i("[Controls VM] Conference current param for video is $videoEnabled")
             conference.updateParams(params)
         } else if (currentCall != null) {
@@ -362,7 +362,7 @@ class ControlsViewModel : ViewModel() {
         val currentCallVideoEnabled = core.currentCall?.currentParams?.videoEnabled() ?: false
 
         val params = core.createConferenceParams()
-        params.enableVideo(currentCallVideoEnabled)
+        params.isVideoEnabled = currentCallVideoEnabled
         Log.i("[Call] Setting videoEnabled to [$currentCallVideoEnabled] in conference params")
 
         val conference = core.conference ?: core.createConferenceWithParams(params)

app/src/main/java/org/linphone/activities/call/viewmodels/StatisticsListViewModel.kt

@@ -37,16 +37,8 @@ class StatisticsListViewModel : ViewModel() {
             state: Call.State,
             message: String
         ) {
-            if (state == Call.State.End || state == Call.State.Error) {
+            if (state == Call.State.End || state == Call.State.Error || state == Call.State.Connected) {
-                val newList = arrayListOf<CallStatisticsData>()
+                computeCallsList()
-                for (stat in callStatsList.value.orEmpty()) {
-                    if (stat.call != call) {
-                        newList.add(stat)
-                    } else {
-                        stat.destroy()
-                    }
-                }
-                callStatsList.value = newList
             }
         }
     }
@@ -54,13 +46,7 @@ class StatisticsListViewModel : ViewModel() {
     init {
         coreContext.core.addListener(listener)
 
-        val list = arrayListOf<CallStatisticsData>()
+        computeCallsList()
-        for (call in coreContext.core.calls) {
-            if (call.state != Call.State.End && call.state != Call.State.Released && call.state != Call.State.Error) {
-                list.add(CallStatisticsData(call))
-            }
-        }
-        callStatsList.value = list
     }
 
     override fun onCleared() {
@@ -69,4 +55,14 @@ class StatisticsListViewModel : ViewModel() {
 
         super.onCleared()
     }
+
+    private fun computeCallsList() {
+        val list = arrayListOf<CallStatisticsData>()
+        for (call in coreContext.core.calls) {
+            if (call.state != Call.State.End && call.state != Call.State.Released && call.state != Call.State.Error) {
+                list.add(CallStatisticsData(call))
+            }
+        }
+        callStatsList.value = list
+    }
 }

app/src/main/java/org/linphone/activities/call/viewmodels/StatusViewModel.kt

@@ -133,7 +133,7 @@ class StatusViewModel : StatusViewModel() {
     }
 
     private fun updateCallQualityIcon() {
-        val call = coreContext.core.currentCall
+        val call = coreContext.core.currentCall ?: coreContext.core.calls.firstOrNull()
         val quality = call?.currentQuality ?: 0f
         callQualityIcon.value = when {
             quality >= 4 -> R.drawable.call_quality_indicator_4

app/src/main/java/org/linphone/activities/call/views/ConferenceParticipantView.kt

@@ -26,11 +26,12 @@ import android.view.LayoutInflater
 import android.widget.LinearLayout
 import androidx.databinding.DataBindingUtil
 import org.linphone.R
-import org.linphone.activities.call.viewmodels.CallViewModel
+import org.linphone.activities.call.viewmodels.ConferenceParticipantViewModel
-import org.linphone.databinding.CallConferenceBinding
+import org.linphone.core.tools.Log
+import org.linphone.databinding.CallConferenceParticipantBinding
 
-class ConferenceCallView : LinearLayout {
+class ConferenceParticipantView : LinearLayout {
-    private lateinit var binding: CallConferenceBinding
+    private lateinit var binding: CallConferenceParticipantBinding
 
     constructor(context: Context) : super(context) {
         init(context)
@@ -53,15 +54,18 @@ class ConferenceCallView : LinearLayout {
 
     fun init(context: Context) {
         binding = DataBindingUtil.inflate(
-            LayoutInflater.from(context), R.layout.call_conference, this, true
+            LayoutInflater.from(context), R.layout.call_conference_participant, this, true
         )
     }
 
-    fun setViewModel(viewModel: CallViewModel) {
+    fun setViewModel(viewModel: ConferenceParticipantViewModel) {
         binding.viewModel = viewModel
 
-        binding.callTimer.base =
+        val currentTimeSecs = System.currentTimeMillis()
-            SystemClock.elapsedRealtime() - (1000 * viewModel.call.duration) // Linphone timestamps are in seconds
+        val participantTime = viewModel.participant.creationTime * 1000 // Linphone timestamps are in seconds
+        val diff = currentTimeSecs - participantTime
+        Log.i("[Conference Participant] Participant joined conference at $participantTime == ${diff / 1000} seconds ago.")
+        binding.callTimer.base = SystemClock.elapsedRealtime() - diff
         binding.callTimer.start()
     }
 }

app/src/main/java/org/linphone/core/CoreContext.kt

@@ -506,7 +506,7 @@ class CoreContext(val context: Context, coreConfig: Config) {
     fun isVideoCallOrConferenceActive(): Boolean {
         val conference = core.conference
         return if (conference != null && core.isInConference) {
-            conference.currentParams.videoEnabled()
+            conference.currentParams.isVideoEnabled()
         } else {
             core.currentCall?.currentParams?.videoEnabled() ?: false
         }

app/src/main/res/drawable/conference.xml

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <bitmap android:src="@drawable/options_start_conference_default"
+            android:tint="?attr/drawableTintColor2"/>
+    </item>
+</selector>

app/src/main/res/drawable/conference_remove_participant.xml

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8"?>
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item>
+        <bitmap android:src="@drawable/conference_exit_default"
+            android:tint="?attr/drawableTintColor"/>
+    </item>
+</selector>
+

app/src/main/res/layout-land/call_controls_fragment.xml

@@ -12,6 +12,9 @@
         <variable
             name="controlsViewModel"
             type="org.linphone.activities.call.viewmodels.ControlsViewModel" />
+        <variable
+            name="conferenceViewModel"
+            type="org.linphone.activities.call.viewmodels.ConferenceViewModel" />
     </data>
 
     <RelativeLayout
@@ -26,7 +29,7 @@
 
         <LinearLayout
             android:id="@+id/active_call_header"
-            android:visibility="@{viewModel.currentCallViewModel == null ? View.GONE : View.VISIBLE}"
+            android:visibility="@{viewModel.currentCallViewModel == null || conferenceViewModel.isInConference() ? View.GONE : View.VISIBLE}"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_alignParentTop="true"
@@ -54,75 +57,16 @@
 
         </LinearLayout>
 
-        <LinearLayout
+        <include layout="@layout/call_conference"
-            android:visibility="@{viewModel.conferenceCalls.size() == 0 || viewModel.isConferencePaused ? View.GONE : View.VISIBLE, default=gone}"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_alignParentTop="true"
             android:layout_centerHorizontal="true"
-            android:background="?attr/backgroundColor"
+            app:controlsViewModel="@{controlsViewModel}"
-            android:orientation="vertical">
+            app:conferenceViewModel="@{conferenceViewModel}" />
-
-            <RelativeLayout
-                android:layout_width="match_parent"
-                android:layout_height="60dp">
-
-                <TextView
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_centerVertical="true"
-                    android:paddingLeft="10dp"
-                    android:textColor="?attr/primaryTextColor"
-                    android:textSize="30sp"
-                    android:text="@string/call_conference_title" />
-
-                <ImageView
-                    android:onClick="@{() -> controlsViewModel.switchCamera()}"
-                    android:visibility="@{controlsViewModel.isVideoEnabled ? View.VISIBLE : View.GONE, default=gone}"
-                    android:contentDescription="@string/content_description_switch_camera"
-                    android:layout_width="wrap_content"
-                    android:layout_height="match_parent"
-                    android:layout_toLeftOf="@id/pause_conference"
-                    android:adjustViewBounds="true"
-                    android:padding="10dp"
-                    android:scaleType="fitCenter"
-                    android:background="@drawable/round_button_background"
-                    android:src="@drawable/camera_switch" />
-
-                <ImageView
-                    android:id="@+id/pause_conference"
-                    android:onClick="@{() -> viewModel.pauseConference()}"
-                    android:contentDescription="@string/content_description_pause_conference"
-                    android:layout_width="40dp"
-                    android:layout_height="40dp"
-                    android:layout_marginRight="10dp"
-                    android:layout_alignParentRight="true"
-                    android:layout_centerVertical="true"
-                    android:adjustViewBounds="true"
-                    android:padding="10dp"
-                    android:scaleType="fitCenter"
-                    android:background="@drawable/round_button_background"
-                    android:src="@drawable/call_pause" />
-
-            </RelativeLayout>
-
-            <View
-                android:layout_width="match_parent"
-                android:layout_height="1dp"
-                android:background="?attr/dividerColor" />
-
-            <LinearLayout
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_gravity="top"
-                android:orientation="vertical"
-                app:entries="@{viewModel.conferenceCalls}"
-                app:layout="@{@layout/call_conference_cell}"/>
-
-        </LinearLayout>
 
         <org.linphone.contact.BigContactAvatarView
-            android:visibility="@{controlsViewModel.isVideoEnabled ? View.GONE : View.VISIBLE, default=gone}"
+            android:visibility="@{controlsViewModel.isVideoEnabled || conferenceViewModel.isInConference ? View.GONE : View.VISIBLE, default=gone}"
             android:id="@+id/avatar"
             android:layout_width="200dp"
             android:layout_height="200dp"
@@ -169,51 +113,15 @@
             app:entries="@{viewModel.pausedCalls}"
             app:layout="@{@layout/call_paused_cell}" />
 
-        <LinearLayout
+        <include layout="@layout/conference_paused"
-            android:visibility="@{viewModel.isConferencePaused &amp;&amp; viewModel.conferenceCalls.size() > 1 ? View.VISIBLE : View.GONE, default=gone}"
             android:layout_width="match_parent"
             android:layout_height="50dp"
             android:layout_above="@id/paused_calls"
-            android:alpha="0.5"
+            app:conferenceViewModel="@{conferenceViewModel}" />
-            android:background="?attr/accentColor"
-            android:gravity="center_vertical"
-            android:orientation="horizontal"
-            android:padding="5dp">
-
-            <ImageView
-                android:layout_width="40dp"
-                android:layout_height="40dp"
-                android:contentDescription="@string/content_description_start_conference"
-                android:src="@drawable/options_start_conference" />
-
-            <TextView
-                android:layout_width="0dip"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:gravity="center_vertical|left"
-                android:singleLine="true"
-                android:ellipsize="end"
-                android:paddingLeft="20dp"
-                android:paddingRight="10dp"
-                android:textColor="?attr/secondaryTextColor"
-                android:textSize="15sp"
-                android:text="@string/call_conference_title" />
-
-            <ImageView
-                android:onClick="@{() -> viewModel.resumeConference()}"
-                android:layout_width="40dp"
-                android:layout_height="40dp"
-                android:gravity="center_vertical"
-                android:contentDescription="@string/content_description_resume_conference"
-                android:background="@drawable/round_button_background"
-                android:padding="10dp"
-                android:src="@drawable/call_pause" />
-
-        </LinearLayout>
 
         <ImageView
             android:onClick="@{() -> viewModel.currentCallViewModel.pause()}"
-            android:visibility="@{viewModel.currentCallViewModel == null ? View.GONE : View.VISIBLE}"
+            android:visibility="@{viewModel.currentCallViewModel == null || conferenceViewModel.isInConference ? View.GONE : View.VISIBLE}"
             android:selected="@{viewModel.currentCallViewModel.isPaused ?? false}"
             android:enabled="@{!viewModel.callPausedByRemote &amp;&amp; controlsViewModel.isPauseEnabled}"
             android:contentDescription="@string/content_description_pause_call"
@@ -230,7 +138,7 @@
             android:id="@+id/switch_camera"
             android:onClick="@{() -> controlsViewModel.switchCamera()}"
             android:enabled="@{!viewModel.callPausedByRemote}"
-            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.showSwitchCamera &amp;&amp; (viewModel.conferenceCalls.size() == 0 || viewModel.isConferencePaused) ? View.VISIBLE : View.GONE, default=gone}"
+            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.showSwitchCamera &amp;&amp; !conferenceViewModel.isInConference ? View.VISIBLE : View.GONE, default=gone}"
             android:contentDescription="@string/content_description_switch_camera"
             android:layout_width="50dp"
             android:layout_height="50dp"
@@ -244,7 +152,7 @@
         <ImageView
             android:onClick="@{() -> viewModel.takeScreenshot()}"
             android:enabled="@{!viewModel.callPausedByRemote}"
-            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.takeScreenshotEnabled &amp;&amp; (viewModel.conferenceCalls.size() == 0 || viewModel.isConferencePaused) ? View.VISIBLE : View.GONE, default=gone}"
+            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.takeScreenshotEnabled &amp;&amp; !conferenceViewModel.isInConference ? View.VISIBLE : View.GONE, default=gone}"
             android:contentDescription="@string/content_description_take_screenshot"
             android:layout_width="50dp"
             android:layout_height="50dp"

app/src/main/res/layout/call_conference.xml

@@ -1,79 +1,89 @@
 <?xml version="1.0" encoding="utf-8"?>
-<layout xmlns:android="http://schemas.android.com/apk/res/android"
+<layout xmlns:tools="http://schemas.android.com/tools"
-    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto">
 
     <data>
         <import type="android.view.View" />
         <variable
-            name="viewModel"
+            name="controlsViewModel"
-            type="org.linphone.activities.call.viewmodels.CallViewModel" />
+            type="org.linphone.activities.call.viewmodels.ControlsViewModel" />
+        <variable
+            name="conferenceViewModel"
+            type="org.linphone.activities.call.viewmodels.ConferenceViewModel" />
     </data>
 
     <LinearLayout
+        android:visibility="@{!conferenceViewModel.isInConference || conferenceViewModel.isConferencePaused ? View.GONE : View.VISIBLE}"
         android:layout_width="match_parent"
-        android:layout_height="70dp"
+        android:layout_height="wrap_content"
+        android:background="?attr/backgroundColor"
         android:orientation="vertical">
 
-        <LinearLayout
+        <RelativeLayout
             android:layout_width="match_parent"
-            android:layout_height="match_parent"
+            android:layout_height="60dp">
-            android:orientation="horizontal"
-            android:layout_margin="10dp">
 
-            <org.linphone.contact.ContactAvatarView
+            <TextView
-                android:id="@+id/avatar"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
-                android:gravity="center"
+                android:layout_centerVertical="true"
-                app:viewModel="@{viewModel}"
+                android:paddingLeft="10dp"
-                tools:layout="@layout/contact_avatar" />
+                android:textColor="?attr/primaryTextColor"
-
+                android:textSize="30sp"
-            <LinearLayout
+                android:text="@string/call_conference_title" />
-                android:layout_width="0dp"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:layout_gravity="center_vertical"
-                android:paddingLeft="5dp"
-                android:paddingRight="10dp"
-                android:orientation="vertical">
-
-                <org.linphone.views.MarqueeTextView
-                    android:text="@{viewModel.contact.fullName ?? viewModel.displayName}"
-                    style="@style/contact_name_list_cell_font"
-                    android:layout_width="match_parent"
-                    android:layout_height="wrap_content"
-                    android:gravity="center_vertical|left"
-                    android:singleLine="true"/>
-
-                <Chronometer
-                    android:id="@+id/call_timer"
-                    android:textColor="?attr/accentColor"
-                    android:textSize="16sp"
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:gravity="center_vertical|right" />
-
-            </LinearLayout>
 
             <ImageView
-                android:onClick="@{() -> viewModel.removeFromConference()}"
+                android:onClick="@{() -> controlsViewModel.switchCamera()}"
-                android:contentDescription="@string/content_description_remove_from_conference"
+                android:visibility="@{controlsViewModel.isVideoEnabled ? View.VISIBLE : View.GONE}"
-                android:layout_width="30dp"
+                android:contentDescription="@string/content_description_switch_camera"
-                android:layout_height="30dp"
+                android:layout_width="40dp"
+                android:layout_height="40dp"
                 android:layout_marginRight="10dp"
-                android:layout_gravity="center_vertical"
+                android:layout_toLeftOf="@id/pause_conference"
+                android:layout_centerVertical="true"
                 android:adjustViewBounds="true"
-                android:gravity="center_vertical"
+                android:padding="10dp"
-                android:src="@drawable/conference_exit_default" />
+                android:scaleType="fitCenter"
+                android:background="@drawable/round_button_background"
+                android:src="@drawable/camera_switch" />
 
-        </LinearLayout>
+            <ImageView
+                android:id="@+id/pause_conference"
+                android:onClick="@{() -> conferenceViewModel.pauseConference()}"
+                android:contentDescription="@string/content_description_pause_conference"
+                android:layout_width="40dp"
+                android:layout_height="40dp"
+                android:layout_marginRight="10dp"
+                android:layout_alignParentRight="true"
+                android:layout_centerVertical="true"
+                android:adjustViewBounds="true"
+                android:padding="10dp"
+                android:scaleType="fitCenter"
+                android:background="@drawable/round_button_background"
+                android:src="@drawable/call_pause" />
+
+        </RelativeLayout>
 
         <View
             android:layout_width="match_parent"
             android:layout_height="1dp"
             android:background="?attr/dividerColor" />
 
+        <ScrollView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_gravity="top">
+
+            <LinearLayout
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:orientation="vertical"
+                app:entries="@{conferenceViewModel.conferenceParticipants}"
+                app:layout="@{@layout/call_conference_cell}"/>
+
+        </ScrollView>
+
     </LinearLayout>
 
 </layout>

app/src/main/res/layout/call_conference_cell.xml

@@ -5,10 +5,10 @@
     <data>
         <variable
             name="data"
-            type="org.linphone.activities.call.viewmodels.CallViewModel" />
+            type="org.linphone.activities.call.viewmodels.ConferenceParticipantViewModel" />
     </data>
 
-    <org.linphone.activities.call.views.ConferenceCallView
+    <org.linphone.activities.call.views.ConferenceParticipantView
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         bind:viewModel="@{data}"/>

app/src/main/res/layout/call_conference_participant.xml

@@ -0,0 +1,80 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <data>
+        <import type="android.view.View" />
+        <variable
+            name="viewModel"
+            type="org.linphone.activities.call.viewmodels.ConferenceParticipantViewModel" />
+    </data>
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="70dp"
+        android:orientation="vertical">
+
+        <LinearLayout
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:orientation="horizontal"
+            android:layout_margin="10dp">
+
+            <org.linphone.contact.ContactAvatarView
+                android:id="@+id/avatar"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:gravity="center"
+                app:viewModel="@{viewModel}"
+                tools:layout="@layout/contact_avatar" />
+
+            <LinearLayout
+                android:layout_width="0dp"
+                android:layout_height="wrap_content"
+                android:layout_weight="1"
+                android:layout_gravity="center_vertical"
+                android:paddingLeft="5dp"
+                android:paddingRight="10dp"
+                android:orientation="vertical">
+
+                <org.linphone.views.MarqueeTextView
+                    android:text="@{viewModel.contact.fullName ?? viewModel.displayName}"
+                    style="@style/contact_name_list_cell_font"
+                    android:layout_width="match_parent"
+                    android:layout_height="wrap_content"
+                    android:gravity="center_vertical|left"
+                    android:singleLine="true"/>
+
+                <Chronometer
+                    android:id="@+id/call_timer"
+                    android:textColor="?attr/accentColor"
+                    android:textSize="16sp"
+                    android:layout_width="wrap_content"
+                    android:layout_height="wrap_content"
+                    android:gravity="center_vertical|right" />
+
+            </LinearLayout>
+
+            <ImageView
+                android:onClick="@{() -> viewModel.removeFromConference()}"
+                android:visibility="@{viewModel.isMeAdmin ? View.VISIBLE : View.GONE, default=gone}"
+                android:contentDescription="@string/content_description_remove_from_conference"
+                android:layout_width="30dp"
+                android:layout_height="30dp"
+                android:layout_marginRight="10dp"
+                android:layout_gravity="center_vertical"
+                android:adjustViewBounds="true"
+                android:gravity="center_vertical"
+                android:src="@drawable/conference_remove_participant" />
+
+        </LinearLayout>
+
+        <View
+            android:layout_width="match_parent"
+            android:layout_height="1dp"
+            android:background="?attr/dividerColor" />
+
+    </LinearLayout>
+
+</layout>

app/src/main/res/layout/call_controls_fragment.xml

@@ -11,6 +11,9 @@
         <variable
             name="controlsViewModel"
             type="org.linphone.activities.call.viewmodels.ControlsViewModel" />
+        <variable
+            name="conferenceViewModel"
+            type="org.linphone.activities.call.viewmodels.ConferenceViewModel" />
     </data>
 
     <RelativeLayout
@@ -25,7 +28,7 @@
 
         <LinearLayout
             android:id="@+id/active_call_header"
-            android:visibility="@{viewModel.currentCallViewModel == null ? View.GONE : View.VISIBLE}"
+            android:visibility="@{viewModel.currentCallViewModel == null || conferenceViewModel.isInConference() ? View.GONE : View.VISIBLE}"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_alignParentTop="true"
@@ -53,75 +56,16 @@
 
         </LinearLayout>
 
-        <LinearLayout
+        <include layout="@layout/call_conference"
-            android:visibility="@{viewModel.conferenceCalls.size() == 0 || viewModel.isConferencePaused ? View.GONE : View.VISIBLE, default=gone}"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
             android:layout_alignParentTop="true"
             android:layout_centerHorizontal="true"
-            android:background="?attr/backgroundColor"
+            app:controlsViewModel="@{controlsViewModel}"
-            android:orientation="vertical">
+            app:conferenceViewModel="@{conferenceViewModel}" />
-
-            <RelativeLayout
-                android:layout_width="match_parent"
-                android:layout_height="60dp">
-
-                <TextView
-                    android:layout_width="wrap_content"
-                    android:layout_height="wrap_content"
-                    android:layout_centerVertical="true"
-                    android:paddingLeft="10dp"
-                    android:textColor="?attr/primaryTextColor"
-                    android:textSize="30sp"
-                    android:text="@string/call_conference_title" />
-
-                <ImageView
-                    android:onClick="@{() -> controlsViewModel.switchCamera()}"
-                    android:visibility="@{controlsViewModel.isVideoEnabled ? View.VISIBLE : View.GONE, default=gone}"
-                    android:contentDescription="@string/content_description_switch_camera"
-                    android:layout_width="wrap_content"
-                    android:layout_height="match_parent"
-                    android:layout_toLeftOf="@id/pause_conference"
-                    android:adjustViewBounds="true"
-                    android:padding="10dp"
-                    android:scaleType="fitCenter"
-                    android:background="@drawable/round_button_background"
-                    android:src="@drawable/camera_switch" />
-
-                <ImageView
-                    android:id="@+id/pause_conference"
-                    android:onClick="@{() -> viewModel.pauseConference()}"
-                    android:contentDescription="@string/content_description_pause_conference"
-                    android:layout_width="40dp"
-                    android:layout_height="40dp"
-                    android:layout_marginRight="10dp"
-                    android:layout_alignParentRight="true"
-                    android:layout_centerVertical="true"
-                    android:adjustViewBounds="true"
-                    android:padding="10dp"
-                    android:scaleType="fitCenter"
-                    android:background="@drawable/round_button_background"
-                    android:src="@drawable/call_pause" />
-
-            </RelativeLayout>
-
-            <View
-                android:layout_width="match_parent"
-                android:layout_height="1dp"
-                android:background="?attr/dividerColor" />
-
-            <LinearLayout
-                android:layout_width="match_parent"
-                android:layout_height="wrap_content"
-                android:layout_gravity="top"
-                android:orientation="vertical"
-                app:entries="@{viewModel.conferenceCalls}"
-                app:layout="@{@layout/call_conference_cell}"/>
-
-        </LinearLayout>
 
         <org.linphone.contact.BigContactAvatarView
-            android:visibility="@{controlsViewModel.isVideoEnabled ? View.GONE : View.VISIBLE, default=gone}"
+            android:visibility="@{controlsViewModel.isVideoEnabled || conferenceViewModel.isInConference ? View.GONE : View.VISIBLE, default=gone}"
             android:id="@+id/avatar"
             android:layout_width="200dp"
             android:layout_height="200dp"
@@ -148,7 +92,7 @@
                 android:src="@drawable/waiting_time" />
 
             <TextView
-                android:textColor="?attr/secondaryTextColor"
+                android:textColor="@color/white_color"
                 android:textSize="15sp"
                 android:layout_width="wrap_content"
                 android:layout_height="wrap_content"
@@ -169,51 +113,15 @@
             app:entries="@{viewModel.pausedCalls}"
             app:layout="@{@layout/call_paused_cell}" />
 
-        <LinearLayout
+        <include layout="@layout/conference_paused"
-            android:visibility="@{viewModel.isConferencePaused &amp;&amp; viewModel.conferenceCalls.size() > 1 ? View.VISIBLE : View.GONE, default=gone}"
             android:layout_width="match_parent"
             android:layout_height="50dp"
             android:layout_above="@id/paused_calls"
-            android:alpha="0.5"
+            app:conferenceViewModel="@{conferenceViewModel}" />
-            android:background="?attr/accentColor"
-            android:gravity="center_vertical"
-            android:orientation="horizontal"
-            android:padding="5dp">
-
-            <ImageView
-                android:layout_width="40dp"
-                android:layout_height="40dp"
-                android:contentDescription="@string/content_description_start_conference"
-                android:src="@drawable/options_start_conference" />
-
-            <TextView
-                android:layout_width="0dip"
-                android:layout_height="wrap_content"
-                android:layout_weight="1"
-                android:gravity="center_vertical|left"
-                android:singleLine="true"
-                android:ellipsize="end"
-                android:paddingLeft="20dp"
-                android:paddingRight="10dp"
-                android:textColor="?attr/secondaryTextColor"
-                android:textSize="15sp"
-                android:text="@string/call_conference_title" />
-
-            <ImageView
-                android:onClick="@{() -> viewModel.resumeConference()}"
-                android:layout_width="40dp"
-                android:layout_height="40dp"
-                android:gravity="center_vertical"
-                android:contentDescription="@string/content_description_resume_conference"
-                android:background="@drawable/round_button_background"
-                android:padding="10dp"
-                android:src="@drawable/call_pause" />
-
-        </LinearLayout>
 
         <ImageView
             android:onClick="@{() -> viewModel.currentCallViewModel.pause()}"
-            android:visibility="@{viewModel.currentCallViewModel == null ? View.GONE : View.VISIBLE}"
+            android:visibility="@{viewModel.currentCallViewModel == null || conferenceViewModel.isInConference ? View.GONE : View.VISIBLE}"
             android:selected="@{viewModel.currentCallViewModel.isPaused ?? false}"
             android:enabled="@{!viewModel.callPausedByRemote &amp;&amp; controlsViewModel.isPauseEnabled}"
             android:contentDescription="@string/content_description_pause_call"
@@ -230,7 +138,7 @@
             android:id="@+id/switch_camera"
             android:onClick="@{() -> controlsViewModel.switchCamera()}"
             android:enabled="@{!viewModel.callPausedByRemote}"
-            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.showSwitchCamera &amp;&amp; (viewModel.conferenceCalls.size() == 0 || viewModel.isConferencePaused) ? View.VISIBLE : View.GONE, default=gone}"
+            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.showSwitchCamera &amp;&amp; !conferenceViewModel.isInConference ? View.VISIBLE : View.GONE, default=gone}"
             android:contentDescription="@string/content_description_switch_camera"
             android:layout_width="50dp"
             android:layout_height="50dp"
@@ -244,7 +152,7 @@
         <ImageView
             android:onClick="@{() -> viewModel.takeScreenshot()}"
             android:enabled="@{!viewModel.callPausedByRemote}"
-            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.takeScreenshotEnabled &amp;&amp; (viewModel.conferenceCalls.size() == 0 || viewModel.isConferencePaused) ? View.VISIBLE : View.GONE, default=gone}"
+            android:visibility="@{controlsViewModel.isVideoEnabled &amp;&amp; controlsViewModel.takeScreenshotEnabled &amp;&amp; !conferenceViewModel.isInConference ? View.VISIBLE : View.GONE, default=gone}"
             android:contentDescription="@string/content_description_take_screenshot"
             android:layout_width="50dp"
             android:layout_height="50dp"

app/src/main/res/layout/conference_paused.xml

@@ -0,0 +1,54 @@
+<?xml version="1.0" encoding="utf-8"?>
+<layout xmlns:tools="http://schemas.android.com/tools"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <data>
+        <import type="android.view.View" />
+        <variable
+            name="conferenceViewModel"
+            type="org.linphone.activities.call.viewmodels.ConferenceViewModel" />
+    </data>
+
+    <LinearLayout
+        android:visibility="@{conferenceViewModel.isConferencePaused &amp;&amp; conferenceViewModel.isInConference ? View.VISIBLE : View.GONE}"
+        android:layout_width="match_parent"
+        android:layout_height="50dp"
+        android:alpha="0.5"
+        android:background="?attr/accentColor"
+        android:gravity="center_vertical"
+        android:orientation="horizontal"
+        android:padding="5dp">
+
+        <ImageView
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:padding="5dp"
+            android:contentDescription="@string/content_description_start_conference"
+            android:src="@drawable/conference" />
+
+        <TextView
+            android:layout_width="0dip"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="center_vertical|left"
+            android:singleLine="true"
+            android:ellipsize="end"
+            android:paddingLeft="10dp"
+            android:paddingRight="10dp"
+            android:textColor="?attr/secondaryTextColor"
+            android:textSize="21sp"
+            android:text="@string/call_conference_title" />
+
+        <ImageView
+            android:onClick="@{() -> conferenceViewModel.resumeConference()}"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            android:gravity="center_vertical"
+            android:contentDescription="@string/content_description_resume_conference"
+            android:background="@drawable/round_button_background"
+            android:padding="10dp"
+            android:src="@drawable/call_pause" />
+
+    </LinearLayout>
+
+</layout>