Added QR code.

receivers/android/app/build.gradle

@@ -84,6 +84,7 @@ dependencies {
     implementation "org.jetbrains.kotlinx:kotlinx-serialization-json:1.5.0"
     implementation 'com.google.android.exoplayer:exoplayer:2.18.6'
     implementation "com.squareup.okhttp3:okhttp:4.11.0"
+    implementation 'com.journeyapps:zxing-android-embedded:4.3.0'
     testImplementation 'junit:junit:4.13.2'
     androidTestImplementation 'androidx.test.ext:junit:1.1.5'
     androidTestImplementation 'androidx.test.espresso:espresso-core:3.5.1'

receivers/android/app/src/main/AndroidManifest.xml

@@ -24,7 +24,6 @@
 
         <activity
             android:name=".MainActivity"
-            android:configChanges="keyboardHidden|orientation|screenSize"
             android:theme="@style/Theme.Main"
             android:exported="true">
             <intent-filter>

receivers/android/app/src/main/java/com/futo/fcast/receiver/MainActivity.kt

@@ -12,7 +12,9 @@ import android.net.Uri
 import android.os.Build
 import android.os.Bundle
 import android.provider.Settings
+import android.util.Base64
 import android.util.Log
+import android.util.TypedValue
 import android.view.View
 import android.view.WindowManager
 import android.widget.*
@@ -24,7 +26,11 @@ import com.google.android.exoplayer2.ExoPlayer
 import com.google.android.exoplayer2.MediaItem
 import com.google.android.exoplayer2.Player
 import com.google.android.exoplayer2.ui.StyledPlayerView
+import com.google.zxing.BarcodeFormat
+import com.journeyapps.barcodescanner.BarcodeEncoder
 import kotlinx.coroutines.*
+import kotlinx.serialization.encodeToString
+import kotlinx.serialization.json.Json
 import okhttp3.OkHttpClient
 import java.io.InputStream
 import java.io.OutputStream
@@ -42,6 +48,9 @@ class MainActivity : AppCompatActivity() {
     private lateinit var _videoBackground: StyledPlayerView
     private lateinit var _viewDemo: View
     private lateinit var _player: ExoPlayer
+    private lateinit var _imageQr: ImageView
+    private lateinit var _textScanToConnect: TextView
+    private var _updateAvailable: Boolean? = null
     private var _updating: Boolean = false
     private var _demoClickCount = 0
     private var _lastDemoToast: Toast? = null
@@ -53,6 +62,12 @@ class MainActivity : AppCompatActivity() {
         super.onCreate(savedInstanceState)
         setContentView(R.layout.activity_main)
 
+        if (savedInstanceState != null && savedInstanceState.containsKey("updateAvailable")) {
+            _updateAvailable = savedInstanceState.getBoolean("updateAvailable", false)
+        } else {
+            _updateAvailable = null
+        }
+
         _buttonUpdate = findViewById(R.id.button_update)
         _text = findViewById(R.id.text_dialog)
         _textIPs = findViewById(R.id.text_ips)
@@ -62,6 +77,8 @@ class MainActivity : AppCompatActivity() {
         _layoutConnectionInfo = findViewById(R.id.layout_connection_info)
         _videoBackground = findViewById(R.id.video_background)
         _viewDemo = findViewById(R.id.view_demo)
+        _imageQr = findViewById(R.id.image_qr)
+        _textScanToConnect = findViewById(R.id.text_scan_to_connect)
 
         startVideo()
         startAnimations()
@@ -105,13 +122,28 @@ class MainActivity : AppCompatActivity() {
             }
         }
 
-        _textIPs.text = "IPs\n" + getIPs().joinToString("\n") + "\n\nPort\n46899"
+        val ips = getIPs()
+        _textIPs.text = "IPs\n" + ips.joinToString("\n") + "\n\nPort\n46899"
+
+        try {
+            val barcodeEncoder = BarcodeEncoder()
+            val px = TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_DIP, 100.0f, resources.displayMetrics).toInt()
+            val json = Json.encodeToString(FCastNetworkConfig(ips, listOf(
+                FCastService(46899, 0)
+            )))
+            val base64 = Base64.encode(json.toByteArray(), Base64.URL_SAFE or Base64.NO_PADDING or Base64.NO_WRAP)
+            val url = "fcast://r/${base64}"
+            val bitmap = barcodeEncoder.encodeBitmap(url, BarcodeFormat.QR_CODE, px, px)
+            _imageQr.setImageBitmap(bitmap)
+        } catch (e: java.lang.Exception) {
+            _textScanToConnect.visibility = View.GONE
+            _imageQr.visibility = View.GONE
+        }
+
         TcpListenerService.activityCount++
 
-        if (checkAndRequestPermissions()) {
-            Log.i(TAG, "Notification permission already granted")
-            restartService()
-        } else {
+        checkAndRequestPermissions()
+        if (savedInstanceState == null) {
             restartService()
         }
 
@@ -138,6 +170,11 @@ class MainActivity : AppCompatActivity() {
         TcpListenerService.activityCount--
     }
 
+    override fun onSaveInstanceState(outState: Bundle) {
+        super.onSaveInstanceState(outState)
+        _updateAvailable?.let { outState.putBoolean("updateAvailable", it) }
+    }
+
     private fun restartService() {
         val i = TcpListenerService.instance
         if (i != null) {
@@ -294,52 +331,59 @@ class MainActivity : AppCompatActivity() {
     private suspend fun checkForUpdates() {
         Log.i(TAG, "Checking for updates...")
 
-        withContext(Dispatchers.IO) {
-            try {
-                val latestVersion = downloadVersionCode()
+        val updateAvailable = _updateAvailable
+        if (updateAvailable != null) {
+            setUpdateAvailable(updateAvailable)
+        } else {
+            withContext(Dispatchers.IO) {
+                try {
+                    val latestVersion = downloadVersionCode()
 
-                if (latestVersion != null) {
-                    val currentVersion = BuildConfig.VERSION_CODE
-                    Log.i(TAG, "Current version $currentVersion latest version $latestVersion.")
+                    if (latestVersion != null) {
+                        val currentVersion = BuildConfig.VERSION_CODE
+                        Log.i(TAG, "Current version $currentVersion latest version $latestVersion.")
 
-                    if (latestVersion > currentVersion) {
                         withContext(Dispatchers.Main) {
-                            try {
-                                (_updateSpinner.drawable as Animatable?)?.stop()
-                                _updateSpinner.visibility = View.INVISIBLE
-                                setText(resources.getText(R.string.there_is_an_update_available_do_you_wish_to_update))
-                                _buttonUpdate.visibility = View.VISIBLE
-                            } catch (e: Throwable) {
-                                Toast.makeText(this@MainActivity, "Failed to show update dialog", Toast.LENGTH_LONG).show()
-                                Log.w(TAG, "Error occurred in update dialog.")
-                            }
+                            setUpdateAvailable(latestVersion > currentVersion)
                         }
                     } else {
+                        Log.w(TAG, "Failed to retrieve version from version URL.")
+
                         withContext(Dispatchers.Main) {
-                            _updateSpinner.visibility = View.INVISIBLE
-                            _buttonUpdate.visibility = View.INVISIBLE
-                            //setText(getString(R.string.no_updates_available))
-                            setText(null)
-                            //Toast.makeText(this@MainActivity, "Already on latest version", Toast.LENGTH_LONG).show()
+                            Toast.makeText(this@MainActivity, "Failed to retrieve version", Toast.LENGTH_LONG).show()
                         }
                     }
-                } else {
-                    Log.w(TAG, "Failed to retrieve version from version URL.")
+                } catch (e: Throwable) {
+                    Log.w(TAG, "Failed to check for updates.", e)
 
                     withContext(Dispatchers.Main) {
-                        Toast.makeText(this@MainActivity, "Failed to retrieve version", Toast.LENGTH_LONG).show()
+                        Toast.makeText(this@MainActivity, "Failed to check for updates", Toast.LENGTH_LONG).show()
                     }
                 }
-            } catch (e: Throwable) {
-                Log.w(TAG, "Failed to check for updates.", e)
-
-                withContext(Dispatchers.Main) {
-                    Toast.makeText(this@MainActivity, "Failed to check for updates", Toast.LENGTH_LONG).show()
-                }
             }
         }
     }
 
+    private fun setUpdateAvailable(updateAvailable: Boolean) {
+        if (updateAvailable) {
+            try {
+                (_updateSpinner.drawable as Animatable?)?.stop()
+                _updateSpinner.visibility = View.INVISIBLE
+                setText(resources.getText(R.string.there_is_an_update_available_do_you_wish_to_update))
+                _buttonUpdate.visibility = View.VISIBLE
+            } catch (e: Throwable) {
+                Toast.makeText(this@MainActivity, "Failed to show update dialog", Toast.LENGTH_LONG).show()
+                Log.w(TAG, "Error occurred in update dialog.")
+            }
+        } else {
+            _updateSpinner.visibility = View.INVISIBLE
+            _buttonUpdate.visibility = View.INVISIBLE
+            setText(null)
+        }
+
+        _updateAvailable = updateAvailable
+    }
+
     private fun downloadVersionCode(): Int? {
         val client = OkHttpClient()
         val request = okhttp3.Request.Builder()

receivers/android/app/src/main/java/com/futo/fcast/receiver/Models.kt

@@ -0,0 +1,15 @@
+package com.futo.fcast.receiver
+
+import kotlinx.serialization.Serializable
+
+@Serializable
+data class FCastNetworkConfig(
+    val ips: List<String>,
+    val services: List<FCastService>
+)
+
+@Serializable
+data class FCastService(
+    val port: Int,
+    val type: Int
+)

receivers/android/app/src/main/res/layout-land/activity_main.xml

@@ -0,0 +1,215 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.constraintlayout.widget.ConstraintLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="#000000">
+
+    <com.google.android.exoplayer2.ui.StyledPlayerView
+        android:id="@+id/video_background"
+        app:use_controller="false"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        app:resize_mode="zoom" />
+
+    <View
+        android:id="@+id/view_demo"
+        android:layout_width="40dp"
+        android:layout_height="40dp"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintStart_toStartOf="parent" />
+
+    <TextView
+        android:id="@+id/text_title"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="FCast"
+        android:textColor="@color/white"
+        android:gravity="center"
+        android:fontFamily="@font/inter_bold"
+        android:textSize="40sp"
+        android:includeFontPadding="false"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintTop_toTopOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/layout_connection_info"/>
+
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:id="@+id/layout_connection_info"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        android:background="@drawable/background_manual_connect"
+        android:paddingStart="25dp"
+        android:paddingEnd="25dp"
+        android:paddingTop="25dp"
+        android:paddingBottom="25dp"
+        app:layout_constraintTop_toBottomOf="@id/text_title"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/text_dialog">
+
+            <TextView
+                android:id="@+id/text_waiting_for_connection"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textColor="@color/white"
+                android:gravity="center"
+                android:fontFamily="@font/inter_regular"
+                android:textSize="14sp"
+                android:text="Waiting for a connection"
+                app:layout_constraintTop_toTopOf="parent"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintBottom_toTopOf="@id/text_manual_connection_information" />
+
+            <ImageView
+                android:id="@+id/image_spinner"
+                android:layout_width="30dp"
+                android:layout_height="30dp"
+                android:layout_marginStart="8dp"
+                app:srcCompat="@drawable/ic_loader_animated"
+                app:layout_constraintTop_toTopOf="@id/text_waiting_for_connection"
+                app:layout_constraintBottom_toBottomOf="@id/text_waiting_for_connection"
+                app:layout_constraintLeft_toRightOf="@id/text_waiting_for_connection" />
+
+            <TextView
+                android:id="@+id/text_manual_connection_information"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textColor="#919191"
+                android:gravity="center"
+                android:fontFamily="@font/inter_light"
+                android:textSize="12sp"
+                android:text="Manual connection information"
+                android:layout_marginTop="20dp"
+                app:layout_constraintTop_toBottomOf="@id/text_waiting_for_connection"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toStartOf="@id/text_scan_to_connect"
+                app:layout_constraintBottom_toTopOf="parent" />
+
+            <TextView
+                android:id="@+id/text_ips"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textColor="@color/white"
+                android:gravity="center"
+                android:fontFamily="@font/inter_regular"
+                android:textSize="14sp"
+                tools:text="IPs\n192.168.1.3\n\nPort\n46899"
+                android:layout_marginTop="20dp"
+                app:layout_constraintTop_toBottomOf="@id/text_manual_connection_information"
+                app:layout_constraintStart_toStartOf="@id/text_manual_connection_information"
+                app:layout_constraintEnd_toEndOf="@id/text_manual_connection_information"
+                app:layout_constraintBottom_toTopOf="@id/text_automatic_discovery" />
+
+            <ImageView
+                android:id="@+id/image_qr"
+                android:layout_width="100dp"
+                android:layout_height="100dp"
+                app:layout_constraintTop_toTopOf="@id/text_ips"
+                app:layout_constraintStart_toStartOf="@id/text_scan_to_connect"
+                app:layout_constraintEnd_toEndOf="@id/text_scan_to_connect"
+                app:layout_constraintBottom_toBottomOf="@id/text_ips" />
+
+            <TextView
+                android:id="@+id/text_scan_to_connect"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textColor="#919191"
+                android:gravity="center"
+                android:fontFamily="@font/inter_regular"
+                android:textSize="12sp"
+                android:text="Scan to connect"
+                android:layout_marginStart="50dp"
+                app:layout_constraintTop_toTopOf="@id/text_manual_connection_information"
+                app:layout_constraintBottom_toBottomOf="@id/text_manual_connection_information"
+                app:layout_constraintStart_toEndOf="@id/text_manual_connection_information"
+                app:layout_constraintEnd_toEndOf="parent" />
+
+            <TextView
+                android:id="@+id/text_automatic_discovery"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:textColor="#919191"
+                android:gravity="center"
+                android:fontFamily="@font/inter_regular"
+                android:textSize="12sp"
+                android:text="Automatic discovery is available via mDNS"
+                android:layout_marginTop="20dp"
+                app:layout_constraintTop_toBottomOf="@id/text_ips"
+                app:layout_constraintStart_toStartOf="parent"
+                app:layout_constraintEnd_toEndOf="parent"
+                app:layout_constraintBottom_toBottomOf="parent" />
+        </androidx.constraintlayout.widget.ConstraintLayout>
+
+    <TextView
+        android:id="@+id/text_dialog"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:text="@string/there_is_an_update_available_do_you_wish_to_update"
+        android:textSize="14sp"
+        android:maxLines="2"
+        android:ellipsize="end"
+        android:textColor="@color/white"
+        android:fontFamily="@font/inter_regular"
+        android:paddingStart="30dp"
+        android:gravity="center"
+        app:layout_constraintTop_toBottomOf="@id/layout_connection_info"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toTopOf="@id/button_update" />
+
+    <LinearLayout
+        android:id="@+id/button_update"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:background="@drawable/background_button_primary"
+        android:layout_marginEnd="2dp"
+        android:clickable="true"
+        app:layout_constraintTop_toBottomOf="@id/text_dialog"
+        app:layout_constraintStart_toStartOf="parent"
+        app:layout_constraintEnd_toEndOf="parent"
+        app:layout_constraintBottom_toBottomOf="parent">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/update"
+            android:textSize="14sp"
+            android:textColor="@color/white"
+            android:fontFamily="@font/inter_regular"
+            android:paddingTop="10dp"
+            android:paddingBottom="10dp"
+            android:paddingStart="28dp"
+            android:paddingEnd="28dp"/>
+    </LinearLayout>
+
+    <FrameLayout
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_marginStart="8dp"
+        app:layout_constraintStart_toEndOf="@id/text_dialog"
+        app:layout_constraintTop_toTopOf="@id/text_dialog"
+        app:layout_constraintBottom_toBottomOf="@id/text_dialog">
+
+        <ImageView
+            android:id="@+id/update_spinner"
+            android:layout_width="40dp"
+            android:layout_height="40dp"
+            app:srcCompat="@drawable/ic_update_animated" />
+
+        <TextView
+            android:id="@+id/text_progress"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text=""
+            android:layout_gravity="center"
+            android:textSize="10sp"
+            android:textColor="@color/white"
+            android:fontFamily="@font/inter_regular" />
+
+    </FrameLayout>
+</androidx.constraintlayout.widget.ConstraintLayout>

receivers/android/app/src/main/res/layout/activity_main.xml

@@ -118,7 +118,32 @@
             app:layout_constraintTop_toBottomOf="@id/text_ips"
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintEnd_toEndOf="parent"
-            app:layout_constraintBottom_toBottomOf="parent" />
+            app:layout_constraintBottom_toTopOf="@id/image_qr"/>
+
+        <ImageView
+            android:id="@+id/image_qr"
+            android:layout_width="100dp"
+            android:layout_height="100dp"
+            android:layout_marginTop="20dp"
+            app:layout_constraintTop_toBottomOf="@id/text_automatic_discovery"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintBottom_toTopOf="@id/text_scan_to_connect" />
+
+        <TextView
+            android:id="@+id/text_scan_to_connect"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:textColor="#919191"
+            android:gravity="center"
+            android:fontFamily="@font/inter_regular"
+            android:textSize="12sp"
+            android:text="Scan to connect"
+            android:layout_marginTop="8dp"
+            app:layout_constraintTop_toBottomOf="@id/image_qr"
+            app:layout_constraintStart_toStartOf="parent"
+            app:layout_constraintEnd_toEndOf="parent"
+            app:layout_constraintBottom_toBottomOf="parent"/>
     </androidx.constraintlayout.widget.ConstraintLayout>
 
     <TextView