copying some Call screen related things from Simple Contacts

app/src/main/AndroidManifest.xml

@@ -8,6 +8,12 @@
     <uses-permission android:name="android.permission.READ_PHONE_STATE" />
     <uses-permission android:name="android.permission.CALL_PHONE" />
     <uses-permission android:name="android.permission.READ_CALL_LOG" />
+    <uses-permission android:name="android.permission.WAKE_LOCK" />
+    <uses-permission android:name="android.permission.ANSWER_PHONE_CALLS" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.MANAGE_OWN_CALLS" />
+    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
+    <uses-permission android:name="android.telecom.action.CONFIGURE_PHONE_ACCOUNT" />
 
     <uses-permission
         android:name="android.permission.USE_FINGERPRINT"
@@ -52,6 +58,12 @@
             android:label="@string/settings"
             android:parentActivityName=".activities.MainActivity" />
 
+        <activity
+            android:name=".activities.CallActivity"
+            android:label="@string/ongoing_call"
+            android:screenOrientation="portrait"
+            android:showOnLockScreen="true" />
+
         <activity
             android:name=".activities.DialpadActivity"
             android:label="@string/dialpad"
@@ -84,6 +96,28 @@
             </intent-filter>
         </activity>
 
+        <service
+            android:name=".services.CallService"
+            android:permission="android.permission.BIND_INCALL_SERVICE">
+            <meta-data
+                android:name="android.telecom.IN_CALL_SERVICE_UI"
+                android:value="true" />
+
+            <intent-filter>
+                <action android:name="android.telecom.InCallService" />
+            </intent-filter>
+        </service>
+
+        <receiver
+            android:name=".receivers.CallActionReceiver"
+            android:enabled="true"
+            android:exported="true">
+            <intent-filter>
+                <action android:name="com.simplemobiletools.contacts.action.ACCEPT_CALL" />
+                <action android:name="com.simplemobiletools.contacts.action.DECLINE_CALL" />
+            </intent-filter>
+        </receiver>
+
         <activity-alias
             android:name=".activities.SplashActivity.Red"
             android:enabled="false"

app/src/main/kotlin/com/simplemobiletools/dialer/activities/CallActivity.kt

@@ -0,0 +1,407 @@
+package com.simplemobiletools.dialer.activities
+
+import android.annotation.SuppressLint
+import android.app.*
+import android.content.Context
+import android.content.Intent
+import android.graphics.*
+import android.media.AudioManager
+import android.net.Uri
+import android.os.Bundle
+import android.os.Handler
+import android.os.PowerManager
+import android.provider.MediaStore
+import android.telecom.Call
+import android.util.Size
+import android.view.WindowManager
+import android.widget.RemoteViews
+import androidx.core.app.NotificationCompat
+import com.simplemobiletools.commons.extensions.*
+import com.simplemobiletools.commons.helpers.MINUTE_SECONDS
+import com.simplemobiletools.commons.helpers.isOreoMr1Plus
+import com.simplemobiletools.commons.helpers.isOreoPlus
+import com.simplemobiletools.commons.helpers.isQPlus
+import com.simplemobiletools.dialer.R
+import com.simplemobiletools.dialer.extensions.addCharacter
+import com.simplemobiletools.dialer.extensions.audioManager
+import com.simplemobiletools.dialer.extensions.config
+import com.simplemobiletools.dialer.extensions.startCallIntent
+import com.simplemobiletools.dialer.helpers.ACCEPT_CALL
+import com.simplemobiletools.dialer.helpers.CallManager
+import com.simplemobiletools.dialer.helpers.DECLINE_CALL
+import com.simplemobiletools.dialer.models.CallContact
+import com.simplemobiletools.dialer.receivers.CallActionReceiver
+import kotlinx.android.synthetic.main.activity_call.*
+import kotlinx.android.synthetic.main.dialpad.*
+import java.util.*
+
+class CallActivity : SimpleActivity() {
+    private val CALL_NOTIFICATION_ID = 1
+
+    private var isSpeakerOn = false
+    private var isMicrophoneOn = true
+    private var isCallEnded = false
+    private var callDuration = 0
+    private var callContact: CallContact? = null
+    private var callContactAvatar: Bitmap? = null
+    private var proximityWakeLock: PowerManager.WakeLock? = null
+    private var callTimer = Timer()
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        supportActionBar?.hide()
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_call)
+
+        updateTextColors(call_holder)
+        initButtons()
+
+        audioManager.mode = AudioManager.MODE_IN_CALL
+        CallManager.getCallContact(applicationContext) { contact ->
+            callContact = contact
+            callContactAvatar = getCallContactAvatar()
+            runOnUiThread {
+                setupNotification()
+                updateOtherPersonsInfo()
+            }
+        }
+
+        addLockScreenFlags()
+        initProximitySensor()
+
+        CallManager.registerCallback(callCallback)
+        updateCallState(CallManager.getState())
+    }
+
+    override fun onDestroy() {
+        super.onDestroy()
+        notificationManager.cancel(CALL_NOTIFICATION_ID)
+        CallManager.unregisterCallback(callCallback)
+        callTimer.cancel()
+        if (proximityWakeLock?.isHeld == true) {
+            proximityWakeLock!!.release()
+        }
+
+        if (CallManager.getState() == Call.STATE_DIALING) {
+            endCall()
+        }
+    }
+
+    override fun onBackPressed() {
+        if (dialpad_wrapper.isVisible()) {
+            dialpad_wrapper.beGone()
+            return
+        } else {
+            super.onBackPressed()
+        }
+
+        if (CallManager.getState() == Call.STATE_DIALING) {
+            endCall()
+        }
+    }
+
+    private fun initButtons() {
+        call_decline.setOnClickListener {
+            endCall()
+        }
+
+        call_accept.setOnClickListener {
+            acceptCall()
+        }
+
+        call_toggle_microphone.setOnClickListener {
+            toggleMicrophone()
+        }
+
+        call_toggle_speaker.setOnClickListener {
+            toggleSpeaker()
+        }
+
+        call_dialpad.setOnClickListener {
+            toggleDialpadVisibility()
+        }
+
+        dialpad_close.setOnClickListener {
+            dialpad_wrapper.beGone()
+        }
+
+        call_end.setOnClickListener {
+            endCall()
+        }
+
+        dialpad_0_holder.setOnClickListener { dialpadPressed('0') }
+        dialpad_1.setOnClickListener { dialpadPressed('1') }
+        dialpad_2.setOnClickListener { dialpadPressed('2') }
+        dialpad_3.setOnClickListener { dialpadPressed('3') }
+        dialpad_4.setOnClickListener { dialpadPressed('4') }
+        dialpad_5.setOnClickListener { dialpadPressed('5') }
+        dialpad_6.setOnClickListener { dialpadPressed('6') }
+        dialpad_7.setOnClickListener { dialpadPressed('7') }
+        dialpad_8.setOnClickListener { dialpadPressed('8') }
+        dialpad_9.setOnClickListener { dialpadPressed('9') }
+
+        dialpad_0_holder.setOnLongClickListener { dialpadPressed('+'); true }
+        dialpad_asterisk.setOnClickListener { dialpadPressed('*') }
+        dialpad_hashtag.setOnClickListener { dialpadPressed('#') }
+
+        dialpad_wrapper.setBackgroundColor(config.backgroundColor)
+        arrayOf(call_toggle_microphone, call_toggle_speaker, call_dialpad, dialpad_close).forEach {
+            it.applyColorFilter(config.textColor)
+        }
+    }
+
+    private fun dialpadPressed(char: Char) {
+        CallManager.keypad(char)
+        dialpad_input.addCharacter(char)
+    }
+
+    private fun toggleSpeaker() {
+        isSpeakerOn = !isSpeakerOn
+        val drawable = if (isSpeakerOn) R.drawable.ic_speaker_on_vector else R.drawable.ic_speaker_off_vector
+        call_toggle_speaker.setImageDrawable(getDrawable(drawable))
+        audioManager.isSpeakerphoneOn = isSpeakerOn
+    }
+
+    private fun toggleMicrophone() {
+        isMicrophoneOn = !isMicrophoneOn
+        val drawable = if (isMicrophoneOn) R.drawable.ic_microphone_vector else R.drawable.ic_microphone_off_vector
+        call_toggle_microphone.setImageDrawable(getDrawable(drawable))
+        audioManager.isMicrophoneMute = !isMicrophoneOn
+    }
+
+    private fun toggleDialpadVisibility() {
+        if (dialpad_wrapper.isVisible()) {
+            dialpad_wrapper.beGone()
+        } else {
+            dialpad_wrapper.beVisible()
+        }
+    }
+
+    private fun updateOtherPersonsInfo() {
+        if (callContact == null) {
+            return
+        }
+
+        caller_name_label.text = if (callContact!!.name.isNotEmpty()) callContact!!.name else getString(R.string.unknown_caller)
+
+        if (callContactAvatar != null) {
+            caller_avatar.setImageBitmap(callContactAvatar)
+        }
+    }
+
+    private fun updateCallState(state: Int) {
+        when (state) {
+            Call.STATE_RINGING -> callRinging()
+            Call.STATE_ACTIVE -> callStarted()
+            Call.STATE_DISCONNECTED -> endCall()
+            Call.STATE_CONNECTING, Call.STATE_DIALING -> initOutgoingCallUI()
+            Call.STATE_SELECT_PHONE_ACCOUNT -> showPhoneAccountPicker()
+        }
+
+        if (state == Call.STATE_DISCONNECTED || state == Call.STATE_DISCONNECTING) {
+            callTimer.cancel()
+        }
+
+        val statusTextId = when (state) {
+            Call.STATE_RINGING -> R.string.is_calling
+            Call.STATE_DIALING -> R.string.dialing
+            else -> 0
+        }
+
+        if (statusTextId != 0) {
+            call_status_label.text = getString(statusTextId)
+        }
+
+        setupNotification()
+    }
+
+    private fun acceptCall() {
+        CallManager.accept()
+    }
+
+    private fun initOutgoingCallUI() {
+        incoming_call_holder.beGone()
+        ongoing_call_holder.beVisible()
+    }
+
+    private fun callRinging() {
+        incoming_call_holder.beVisible()
+    }
+
+    private fun callStarted() {
+        incoming_call_holder.beGone()
+        ongoing_call_holder.beVisible()
+        callTimer.scheduleAtFixedRate(getCallTimerUpdateTask(), 1000, 1000)
+    }
+
+    private fun showPhoneAccountPicker() {
+        if (callContact == null || callContact!!.number.isEmpty()) {
+            toast(R.string.unknown_error_occurred)
+        } else {
+            startCallIntent(callContact!!.number)
+        }
+    }
+
+    private fun endCall() {
+        CallManager.reject()
+        if (proximityWakeLock?.isHeld == true) {
+            proximityWakeLock!!.release()
+        }
+
+        audioManager.mode = AudioManager.MODE_NORMAL
+        if (isCallEnded) {
+            finish()
+            return
+        }
+
+        isCallEnded = true
+        if (callDuration > 0) {
+            runOnUiThread {
+                call_status_label.text = "${callDuration.getFormattedDuration()} (${getString(R.string.call_ended)})"
+                Handler().postDelayed({
+                    finish()
+                }, 3000)
+            }
+        } else {
+            call_status_label.text = getString(R.string.call_ended)
+            finish()
+        }
+    }
+
+    private fun getCallTimerUpdateTask() = object : TimerTask() {
+        override fun run() {
+            callDuration++
+            runOnUiThread {
+                if (!isCallEnded) {
+                    call_status_label.text = callDuration.getFormattedDuration()
+                }
+            }
+        }
+    }
+
+    @SuppressLint("NewApi")
+    private val callCallback = object : Call.Callback() {
+        override fun onStateChanged(call: Call, state: Int) {
+            super.onStateChanged(call, state)
+            updateCallState(state)
+        }
+    }
+
+    @SuppressLint("NewApi")
+    private fun addLockScreenFlags() {
+        if (isOreoMr1Plus()) {
+            setShowWhenLocked(true)
+            setTurnScreenOn(true)
+        } else {
+            window.addFlags(WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED or WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON)
+        }
+
+        if (isOreoPlus()) {
+            (getSystemService(Context.KEYGUARD_SERVICE) as KeyguardManager).requestDismissKeyguard(this, null)
+        } else {
+            window.addFlags(WindowManager.LayoutParams.FLAG_DISMISS_KEYGUARD)
+        }
+    }
+
+    private fun initProximitySensor() {
+        val powerManager = getSystemService(Context.POWER_SERVICE) as PowerManager
+        proximityWakeLock = powerManager.newWakeLock(PowerManager.PROXIMITY_SCREEN_OFF_WAKE_LOCK, "com.simplemobiletools.contacts.pro:wake_lock")
+        proximityWakeLock!!.acquire(10 * MINUTE_SECONDS * 1000L)
+    }
+
+    @SuppressLint("NewApi")
+    private fun setupNotification() {
+        val callState = CallManager.getState()
+        val channelId = "simple_contacts_call"
+        if (isOreoPlus()) {
+            val importance = NotificationManager.IMPORTANCE_DEFAULT
+            val name = "call_notification_channel"
+
+            NotificationChannel(channelId, name, importance).apply {
+                setSound(null, null)
+                notificationManager.createNotificationChannel(this)
+            }
+        }
+
+        val openAppIntent = Intent(this, CallActivity::class.java)
+        openAppIntent.flags = Intent.FLAG_ACTIVITY_BROUGHT_TO_FRONT
+        val openAppPendingIntent = PendingIntent.getActivity(this, 0, openAppIntent, 0)
+
+        val acceptCallIntent = Intent(this, CallActionReceiver::class.java)
+        acceptCallIntent.action = ACCEPT_CALL
+        val acceptPendingIntent = PendingIntent.getBroadcast(this, 0, acceptCallIntent, PendingIntent.FLAG_CANCEL_CURRENT)
+
+        val declineCallIntent = Intent(this, CallActionReceiver::class.java)
+        declineCallIntent.action = DECLINE_CALL
+        val declinePendingIntent = PendingIntent.getBroadcast(this, 1, declineCallIntent, PendingIntent.FLAG_CANCEL_CURRENT)
+
+        val callerName = if (callContact != null && callContact!!.name.isNotEmpty()) callContact!!.name else getString(R.string.unknown_caller)
+        val contentTextId = when (callState) {
+            Call.STATE_RINGING -> R.string.is_calling
+            Call.STATE_DIALING -> R.string.dialing
+            Call.STATE_DISCONNECTED -> R.string.call_ended
+            Call.STATE_DISCONNECTING -> R.string.call_ending
+            else -> R.string.ongoing_call
+        }
+
+        val collapsedView = RemoteViews(packageName, R.layout.call_notification).apply {
+            setText(R.id.notification_caller_name, callerName)
+            setText(R.id.notification_call_status, getString(contentTextId))
+            setVisibleIf(R.id.notification_accept_call, callState == Call.STATE_RINGING)
+
+            setOnClickPendingIntent(R.id.notification_decline_call, declinePendingIntent)
+            setOnClickPendingIntent(R.id.notification_accept_call, acceptPendingIntent)
+
+            if (callContactAvatar != null) {
+                setImageViewBitmap(R.id.notification_thumbnail, getCircularBitmap(callContactAvatar!!))
+            }
+        }
+
+        val builder = NotificationCompat.Builder(this, channelId)
+            .setSmallIcon(R.drawable.ic_phone_vector)
+            .setContentIntent(openAppPendingIntent)
+            .setPriority(NotificationCompat.PRIORITY_DEFAULT)
+            .setCategory(Notification.CATEGORY_CALL)
+            .setCustomContentView(collapsedView)
+            .setOngoing(true)
+            .setSound(null)
+            .setUsesChronometer(callState == Call.STATE_ACTIVE)
+            .setChannelId(channelId)
+            .setStyle(NotificationCompat.DecoratedCustomViewStyle())
+
+        val notification = builder.build()
+        notificationManager.notify(CALL_NOTIFICATION_ID, notification)
+    }
+
+    @SuppressLint("NewApi")
+    private fun getCallContactAvatar(): Bitmap? {
+        var bitmap: Bitmap? = null
+        if (callContact?.photoUri?.isNotEmpty() == true) {
+            val photoUri = Uri.parse(callContact!!.photoUri)
+            bitmap = if (isQPlus()) {
+                val tmbSize = resources.getDimension(R.dimen.list_avatar_size).toInt()
+                contentResolver.loadThumbnail(photoUri, Size(tmbSize, tmbSize), null)
+            } else {
+                MediaStore.Images.Media.getBitmap(contentResolver, photoUri)
+            }
+
+            bitmap = getCircularBitmap(bitmap!!)
+        }
+
+        return bitmap
+    }
+
+    private fun getCircularBitmap(bitmap: Bitmap): Bitmap {
+        val output = Bitmap.createBitmap(bitmap.width, bitmap.width, Bitmap.Config.ARGB_8888)
+        val canvas = Canvas(output)
+        val paint = Paint()
+        val rect = Rect(0, 0, bitmap.width, bitmap.height)
+        val radius = bitmap.width / 2.toFloat()
+
+        paint.isAntiAlias = true
+        canvas.drawARGB(0, 0, 0, 0)
+        canvas.drawCircle(radius, radius, radius, paint)
+        paint.xfermode = PorterDuffXfermode(PorterDuff.Mode.SRC_IN)
+        canvas.drawBitmap(bitmap, rect, rect, paint)
+        return output
+    }
+}

app/src/main/kotlin/com/simplemobiletools/dialer/extensions/Context.kt

@@ -2,6 +2,7 @@ package com.simplemobiletools.dialer.extensions
 
 import android.annotation.SuppressLint
 import android.content.Context
+import android.media.AudioManager
 import android.net.Uri
 import com.simplemobiletools.commons.extensions.telecomManager
 import com.simplemobiletools.dialer.helpers.Config
@@ -9,6 +10,8 @@ import com.simplemobiletools.dialer.models.SIMAccount
 
 val Context.config: Config get() = Config.newInstance(applicationContext)
 
+val Context.audioManager: AudioManager get() = getSystemService(Context.AUDIO_SERVICE) as AudioManager
+
 @SuppressLint("MissingPermission")
 fun Context.getAvailableSIMCardLabels(): ArrayList<SIMAccount> {
     val SIMAccounts = ArrayList<SIMAccount>()

app/src/main/kotlin/com/simplemobiletools/dialer/helpers/CallManager.kt

@@ -0,0 +1,70 @@
+package com.simplemobiletools.dialer.helpers
+
+import android.annotation.SuppressLint
+import android.content.Context
+import android.net.Uri
+import android.telecom.Call
+import android.telecom.VideoProfile
+import com.simplemobiletools.commons.helpers.SimpleContactsHelper
+import com.simplemobiletools.dialer.models.CallContact
+
+// inspired by https://github.com/Chooloo/call_manage
+@SuppressLint("NewApi")
+class CallManager {
+    companion object {
+        var call: Call? = null
+
+        fun accept() {
+            call?.answer(VideoProfile.STATE_AUDIO_ONLY)
+        }
+
+        fun reject() {
+            if (call != null) {
+                if (call!!.state == Call.STATE_RINGING) {
+                    call!!.reject(false, null)
+                } else {
+                    call!!.disconnect()
+                }
+            }
+        }
+
+        fun registerCallback(callback: Call.Callback) {
+            if (call != null) {
+                call!!.registerCallback(callback)
+            }
+        }
+
+        fun unregisterCallback(callback: Call.Callback) {
+            call?.unregisterCallback(callback)
+        }
+
+        fun getState() = if (call == null) {
+            Call.STATE_DISCONNECTED
+        } else {
+            call!!.state
+        }
+
+        fun keypad(c: Char) {
+            call?.playDtmfTone(c)
+            call?.stopDtmfTone()
+        }
+
+        fun getCallContact(context: Context, callback: (CallContact?) -> Unit) {
+            val callContact = CallContact("", "", "")
+            if (call == null || call!!.details == null || call!!.details!!.handle == null) {
+                callback(callContact)
+                return
+            }
+
+            val uri = Uri.decode(call!!.details.handle.toString())
+            if (uri.startsWith("tel:")) {
+                val number = uri.substringAfter("tel:")
+                callContact.number = number
+                callContact.name = SimpleContactsHelper(context).getNameFromPhoneNumber(number)
+                callContact.photoUri = SimpleContactsHelper(context).getPhotoUriFromPhoneNumber(number)
+
+                callback(callContact)
+            }
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/dialer/helpers/Constants.kt

@@ -12,3 +12,7 @@ const val ALL_TABS_MASK = CONTACTS_TAB_MASK or FAVORITES_TAB_MASK or RECENTS_TAB
 val tabsList = arrayListOf(CONTACTS_TAB_MASK, RECENTS_TAB_MASK)
 
 const val KEY_PHONE = "phone"
+
+private const val PATH = "com.simplemobiletools.contacts.action."
+const val ACCEPT_CALL = PATH + "accept_call"
+const val DECLINE_CALL = PATH + "decline_call"

app/src/main/kotlin/com/simplemobiletools/dialer/models/CallContact.kt

@@ -0,0 +1,4 @@
+package com.simplemobiletools.dialer.models
+
+// a simpler Contact model containing just info needed at the call screen
+data class CallContact(var name: String, var photoUri: String, var number: String)

app/src/main/kotlin/com/simplemobiletools/dialer/receivers/CallActionReceiver.kt

@@ -0,0 +1,17 @@
+package com.simplemobiletools.dialer.receivers
+
+import android.content.BroadcastReceiver
+import android.content.Context
+import android.content.Intent
+import com.simplemobiletools.dialer.helpers.ACCEPT_CALL
+import com.simplemobiletools.dialer.helpers.CallManager
+import com.simplemobiletools.dialer.helpers.DECLINE_CALL
+
+class CallActionReceiver : BroadcastReceiver() {
+    override fun onReceive(context: Context, intent: Intent) {
+        when (intent.action) {
+            ACCEPT_CALL -> CallManager.accept()
+            DECLINE_CALL -> CallManager.reject()
+        }
+    }
+}

app/src/main/kotlin/com/simplemobiletools/dialer/services/CallService.kt

@@ -0,0 +1,22 @@
+package com.simplemobiletools.dialer.services
+
+import android.content.Intent
+import android.telecom.Call
+import android.telecom.InCallService
+import com.simplemobiletools.dialer.activities.CallActivity
+import com.simplemobiletools.dialer.helpers.CallManager
+
+class CallService : InCallService() {
+    override fun onCallAdded(call: Call) {
+        super.onCallAdded(call)
+        val intent = Intent(this, CallActivity::class.java)
+        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+        startActivity(intent)
+        CallManager.call = call
+    }
+
+    override fun onCallRemoved(call: Call) {
+        super.onCallRemoved(call)
+        CallManager.call = null
+    }
+}

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

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="@color/ripple_foreground">
+    <item android:id="@+id/shortcut_dialpad_background">
+        <shape android:shape="oval">
+            <solid android:color="@color/md_green_700" />
+        </shape>
+    </item>
+
+    <item
+        android:bottom="@dimen/medium_margin"
+        android:drawable="@drawable/ic_phone_vector"
+        android:left="@dimen/medium_margin"
+        android:right="@dimen/medium_margin"
+        android:top="@dimen/medium_margin" />
+</ripple>

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

@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="utf-8"?>
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="@color/ripple_foreground">
+    <item android:id="@+id/shortcut_dialpad_background">
+        <shape android:shape="oval">
+            <solid android:color="@color/md_red_700" />
+        </shape>
+    </item>
+
+    <item
+        android:bottom="@dimen/medium_margin"
+        android:drawable="@drawable/ic_phone_down_vector"
+        android:left="@dimen/medium_margin"
+        android:right="@dimen/medium_margin"
+        android:top="@dimen/medium_margin" />
+</ripple>

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

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M19,11C19,11 19.0088,9.8569 18.1571,9.8714 17.362,9.885 17.3,11 17.3,11c0,0.74 -0.16,1.43 -0.43,2.05l1.23,1.23C18.66,13.3 19,12.19 19,11ZM14.98,11.17C14.98,11.11 15,11.06 15,11L15,5C15,3.34 13.66,2 12,2 10.34,2 9,3.34 9,5L9,5.18ZM4.27,3 L3,4.27l6.01,6.01 0,0.72c0,1.66 1.33,3 2.99,3 0.22,0 0.44,-0.03 0.65,-0.08l1.66,1.66C13.6,15.91 12.81,16.1 12,16.1 9.24,16.1 6.7,14 6.7,11 6.7,11 6.6686,9.9807 5.8435,9.992 5.0185,10.0033 5,11 5,11c0,3.41 2.72,6.23 6,6.72L11,21c0,0 -0.0013,1.036 1.0127,1.0169C12.9886,21.9987 13,21 13,21l0,-3.28c0.91,-0.13 1.77,-0.45 2.54,-0.9L19.73,21 21,19.73Z" />
+</vector>

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

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@color/md_red_700"
+        android:pathData="M23.4267,12.2343C20.4492,9.413 16.4272,7.6753 11.9951,7.6753c-4.4321,0 -8.4541,1.7377 -11.4316,4.559 -0.1757,0.1757 -0.2831,0.4198 -0.2831,0.6931 0,0.2733 0.1074,0.5174 0.2831,0.6931l2.421,2.421c0.1757,0.1757 0.4198,0.2831 0.6931,0.2831 0.2636,0 0.5076,-0.1074 0.6834,-0.2733 0.7712,-0.7224 1.6498,-1.3277 2.5968,-1.806 0.3222,-0.1562 0.5467,-0.4881 0.5467,-0.8786l0,-3.0263C8.92,9.8718 10.4332,9.6278 11.9951,9.6278c1.562,0 3.0751,0.2441 4.4906,0.7029l0,3.0263c0,0.3807 0.2245,0.7224 0.5467,0.8786 0.9567,0.4783 1.8255,1.0934 2.6065,1.806 0.1757,0.1757 0.4198,0.2733 0.6834,0.2733 0.2733,0 0.5174,-0.1074 0.6931,-0.2831l2.421,-2.421c0.1757,-0.1757 0.2831,-0.4198 0.2831,-0.6931 0,-0.2733 -0.1171,-0.5076 -0.2929,-0.6834z" />
+</vector>

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

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M23.4267,12.2343C20.4492,9.413 16.4272,7.6753 11.9951,7.6753c-4.4321,0 -8.4541,1.7377 -11.4316,4.559 -0.1757,0.1757 -0.2831,0.4198 -0.2831,0.6931 0,0.2733 0.1074,0.5174 0.2831,0.6931l2.421,2.421c0.1757,0.1757 0.4198,0.2831 0.6931,0.2831 0.2636,0 0.5076,-0.1074 0.6834,-0.2733 0.7712,-0.7224 1.6498,-1.3277 2.5968,-1.806 0.3222,-0.1562 0.5467,-0.4881 0.5467,-0.8786l0,-3.0263C8.92,9.8718 10.4332,9.6278 11.9951,9.6278c1.562,0 3.0751,0.2441 4.4906,0.7029l0,3.0263c0,0.3807 0.2245,0.7224 0.5467,0.8786 0.9567,0.4783 1.8255,1.0934 2.6065,1.806 0.1757,0.1757 0.4198,0.2733 0.6834,0.2733 0.2733,0 0.5174,-0.1074 0.6931,-0.2831l2.421,-2.421c0.1757,-0.1757 0.2831,-0.4198 0.2831,-0.6931 0,-0.2733 -0.1171,-0.5076 -0.2929,-0.6834z" />
+</vector>

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

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="@color/md_green_700"
+        android:pathData="M6.62,10.79c1.44,2.83 3.76,5.14 6.59,6.59l2.2,-2.2c0.27,-0.27 0.67,-0.36 1.02,-0.24 1.12,0.37 2.33,0.57 3.57,0.57 0.55,0 1,0.45 1,1V20c0,0.55 -0.45,1 -1,1 -9.39,0 -17,-7.61 -17,-17 0,-0.55 0.45,-1 1,-1h3.5c0.55,0 1,0.45 1,1 0,1.25 0.2,2.45 0.57,3.57 0.11,0.35 0.03,0.74 -0.25,1.02l-2.2,2.2z" />
+</vector>

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

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M16.5,12c0,-1.77 -1.02,-3.29 -2.5,-4.03v2.21l2.45,2.45c0.03,-0.2 0.05,-0.41 0.05,-0.63zM19,12c0,0.94 -0.2,1.82 -0.54,2.64l1.51,1.51C20.63,14.91 21,13.5 21,12c0,-4.28 -2.99,-7.86 -7,-8.77v2.06c2.89,0.86 5,3.54 5,6.71zM4.27,3L3,4.27 7.73,9L3,9v6h4l5,5v-6.73l4.25,4.25c-0.67,0.52 -1.42,0.93 -2.25,1.18v2.06c1.38,-0.31 2.63,-0.95 3.69,-1.81L19.73,21 21,19.73l-9,-9L4.27,3zM12,4L9.91,6.09 12,8.18L12,4z" />
+</vector>

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

@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+    android:width="24dp"
+    android:height="24dp"
+    android:viewportWidth="24"
+    android:viewportHeight="24">
+    <path
+        android:fillColor="#FFFFFF"
+        android:pathData="M3,9v6h4l5,5L12,4L7,9L3,9zM16.5,12c0,-1.77 -1.02,-3.29 -2.5,-4.03v8.05c1.48,-0.73 2.5,-2.25 2.5,-4.02zM14,3.23v2.06c2.89,0.86 5,3.54 5,6.71s-2.11,5.85 -5,6.71v2.06c4.01,-0.91 7,-4.49 7,-8.77s-2.99,-7.86 -7,-8.77z" />
+</vector>

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

@@ -0,0 +1,6 @@
+<ripple xmlns:android="http://schemas.android.com/apk/res/android"
+    android:color="@color/md_grey">
+    <item
+        android:id="@android:id/mask"
+        android:drawable="@android:color/white" />
+</ripple>

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

@@ -0,0 +1,202 @@
+<?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:id="@+id/call_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <ImageView
+        android:id="@+id/caller_avatar"
+        android:layout_width="@dimen/incoming_call_button_size"
+        android:layout_height="@dimen/incoming_call_button_size"
+        android:contentDescription="@string/accept"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintVertical_bias="0.2"
+        tools:src="@drawable/ic_call_accept" />
+
+    <com.simplemobiletools.commons.views.MyTextView
+        android:id="@+id/caller_name_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/normal_margin"
+        android:textSize="@dimen/caller_name_text_size"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/caller_avatar"
+        tools:text="Caller name" />
+
+    <com.simplemobiletools.commons.views.MyTextView
+        android:id="@+id/call_status_label"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="@dimen/normal_margin"
+        android:alpha="0.8"
+        android:textSize="@dimen/call_status_text_size"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/caller_name_label"
+        tools:text="Is Calling" />
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/ongoing_call_holder"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone">
+
+        <ImageView
+            android:id="@+id/call_toggle_microphone"
+            android:layout_width="@dimen/dialpad_button_size"
+            android:layout_height="@dimen/dialpad_button_size"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:padding="@dimen/medium_margin"
+            android:src="@drawable/ic_microphone_vector"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.15"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.75" />
+
+        <ImageView
+            android:id="@+id/call_toggle_speaker"
+            android:layout_width="@dimen/dialpad_button_size"
+            android:layout_height="@dimen/dialpad_button_size"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:padding="@dimen/medium_margin"
+            android:src="@drawable/ic_speaker_off_vector"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.75" />
+
+        <ImageView
+            android:id="@+id/call_dialpad"
+            android:layout_width="@dimen/dialpad_button_size"
+            android:layout_height="@dimen/dialpad_button_size"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:padding="@dimen/medium_margin"
+            android:src="@drawable/ic_dialpad_vector"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.85"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.75" />
+
+        <ImageView
+            android:id="@+id/call_end"
+            android:layout_width="@dimen/dialpad_button_size"
+            android:layout_height="@dimen/dialpad_button_size"
+            android:contentDescription="@string/decline"
+            android:src="@drawable/ic_call_decline"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.9" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/incoming_call_holder"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone">
+
+        <ImageView
+            android:id="@+id/call_decline"
+            android:layout_width="@dimen/incoming_call_button_size"
+            android:layout_height="@dimen/incoming_call_button_size"
+            android:contentDescription="@string/decline"
+            android:src="@drawable/ic_call_decline"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.15"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.85" />
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/call_decline_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/normal_margin"
+            android:text="@string/decline"
+            android:textSize="@dimen/bigger_text_size"
+            app:layout_constraintEnd_toEndOf="@+id/call_decline"
+            app:layout_constraintStart_toStartOf="@+id/call_decline"
+            app:layout_constraintTop_toBottomOf="@+id/call_decline" />
+
+        <ImageView
+            android:id="@+id/call_accept"
+            android:layout_width="@dimen/incoming_call_button_size"
+            android:layout_height="@dimen/incoming_call_button_size"
+            android:contentDescription="@string/accept"
+            android:src="@drawable/ic_call_accept"
+            app:layout_constraintBottom_toBottomOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintHorizontal_bias="0.85"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintTop_toTopOf="parent"
+            app:layout_constraintVertical_bias="0.85" />
+
+        <com.simplemobiletools.commons.views.MyTextView
+            android:id="@+id/call_accept_label"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_marginTop="@dimen/normal_margin"
+            android:text="@string/accept"
+            android:textSize="@dimen/bigger_text_size"
+            app:layout_constraintEnd_toEndOf="@+id/call_accept"
+            app:layout_constraintStart_toStartOf="@+id/call_accept"
+            app:layout_constraintTop_toBottomOf="@+id/call_accept" />
+
+    </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <RelativeLayout
+        android:id="@+id/dialpad_wrapper"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_marginBottom="@dimen/activity_margin"
+        android:visibility="gone"
+        app:layout_constraintBottom_toBottomOf="parent"
+        app:layout_constraintTop_toBottomOf="@+id/call_status_label">
+
+        <com.simplemobiletools.commons.views.MyEditText
+            android:id="@+id/dialpad_input"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:layout_above="@+id/dialpad_include"
+            android:layout_marginStart="@dimen/dialpad_button_size"
+            android:layout_marginEnd="@dimen/medium_margin"
+            android:layout_toStartOf="@+id/dialpad_close"
+            android:gravity="center"
+            android:inputType="phone"
+            android:textCursorDrawable="@null"
+            android:textSize="@dimen/dialpad_text_size" />
+
+        <ImageView
+            android:id="@+id/dialpad_close"
+            android:layout_width="@dimen/normal_icon_size"
+            android:layout_height="@dimen/normal_icon_size"
+            android:layout_alignTop="@+id/dialpad_input"
+            android:layout_alignBottom="@+id/dialpad_input"
+            android:layout_alignParentEnd="true"
+            android:layout_centerVertical="true"
+            android:layout_marginEnd="@dimen/activity_margin"
+            android:background="?attr/selectableItemBackgroundBorderless"
+            android:padding="@dimen/medium_margin"
+            android:src="@drawable/ic_cross_vector" />
+
+        <include
+            android:id="@+id/dialpad_include"
+            layout="@layout/dialpad" />
+
+    </RelativeLayout>
+
+</androidx.constraintlayout.widget.ConstraintLayout>

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

@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="utf-8"?>
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/notification_holder"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <TextView
+        android:id="@+id/notification_caller_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textColor="@color/md_grey_black"
+        android:textSize="@dimen/bigger_text_size"
+        android:textStyle="bold"
+        tools:text="Caller name" />
+
+    <TextView
+        android:id="@+id/notification_call_status"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/notification_caller_name"
+        android:alpha="0.8"
+        android:textColor="@color/md_grey_black"
+        tools:text="123 456 789" />
+
+    <ImageView
+        android:id="@+id/notification_thumbnail"
+        android:layout_width="@dimen/list_avatar_size"
+        android:layout_height="@dimen/list_avatar_size"
+        android:layout_alignParentTop="true"
+        android:layout_alignParentEnd="true" />
+
+    <LinearLayout
+        android:id="@+id/notification_actions_holder"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_below="@+id/notification_call_status"
+        android:layout_marginTop="@dimen/activity_margin"
+        android:orientation="horizontal">
+
+        <ImageView
+            android:id="@+id/notification_decline_call"
+            android:layout_width="wrap_content"
+            android:layout_height="@dimen/call_notification_button_size"
+            android:layout_weight="1"
+            android:background="@drawable/ripple_background"
+            android:src="@drawable/ic_phone_down_red_vector" />
+
+        <ImageView
+            android:id="@+id/notification_accept_call"
+            android:layout_width="wrap_content"
+            android:layout_height="@dimen/call_notification_button_size"
+            android:layout_weight="1"
+            android:background="@drawable/ripple_background"
+            android:src="@drawable/ic_phone_green_vector" />
+
+    </LinearLayout>
+</RelativeLayout>

app/src/main/res/values/colors.xml

@@ -1,4 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-
+    <color name="ripple_foreground">#33FFFFFF</color>
 </resources>

app/src/main/res/values/dimens.xml

@@ -1,6 +1,10 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
     <dimen name="dialpad_button_size">60dp</dimen>
+    <dimen name="incoming_call_button_size">72dp</dimen>
+    <dimen name="call_notification_button_size">30dp</dimen>
 
     <dimen name="dialpad_text_size">34sp</dimen>
+    <dimen name="caller_name_text_size">34sp</dimen>
+    <dimen name="call_status_text_size">20sp</dimen>
 </resources>