implemented status bar with battery, network, volume

app/src/main/AndroidManifest.xml

@@ -2,12 +2,14 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:tools="http://schemas.android.com/tools">
 
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE"/>
-    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SYSTEM_EXEMPTED"/>
+    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE" />
+    <uses-permission android:name="android.permission.FOREGROUND_SERVICE_SYSTEM_EXEMPTED" />
     <uses-permission android:name="android.permission.SCHEDULE_EXACT_ALARM" />
-    <uses-permission android:name="android.permission.USE_EXACT_ALARM"/>
+    <uses-permission android:name="android.permission.USE_EXACT_ALARM" />
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
-    <uses-permission android:name="android.permission.INTERNET"/>
+    <uses-permission android:name="android.permission.CHANGE_NETWORK_STATE"/>
+    <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.WAKE_LOCK" />
 
     <application
@@ -21,6 +23,7 @@
         android:supportsRtl="true"
         android:theme="@style/Theme.CatFlipScreen"
         tools:targetApi="31">
+
         <receiver
             android:name=".MyReceiver"
             android:enabled="true"
@@ -33,14 +36,13 @@
         <service
             android:name=".FlipScreenService"
             android:enabled="true"
+            android:exported="false"
             android:foregroundServiceType="systemExempted"
-            android:stopWithTask="false"
-            android:exported="false" />
+            android:stopWithTask="false" />
 
         <activity
             android:name=".MainActivity"
             android:exported="true"
-
             android:theme="@style/Theme.AppCompat">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN" />

app/src/main/java/net/mezimmah/catflipscreen/CatFlipScreenApplication.kt

@@ -26,6 +26,8 @@ class CatFlipScreenApplication : Application() {
     companion object {
         const val CHANNEL_ID = "autoStartServiceChannel"
         const val CHANNEL_NAME = "Auto Start Service Channel"
+        const val BROADCAST_BATTERY_CHANGED = "BROADCAST_BATTERY_CHANGED"
+        const val BROADCAST_AUDIO_MODE_CHANGED = "BROADCAST_AUDIO_MODE_CHANGED"
     }
 
 }

app/src/main/java/net/mezimmah/catflipscreen/FlipScreenService.kt

@@ -30,12 +30,12 @@ class FlipScreenService : Service() {
     override fun onTaskRemoved(rootIntent: Intent?) {
         val restartServiceIntent = Intent(applicationContext, FlipScreenService::class.java).also {
             it.setPackage(packageName)
-        };
+        }
         val restartServicePendingIntent: PendingIntent = PendingIntent.getService(this, 1, restartServiceIntent,
-            PendingIntent.FLAG_ONE_SHOT or PendingIntent.FLAG_IMMUTABLE);
-        applicationContext.getSystemService(Context.ALARM_SERVICE);
-        val alarmService: AlarmManager = applicationContext.getSystemService(Context.ALARM_SERVICE) as AlarmManager;
-        alarmService.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + 1000, restartServicePendingIntent);
+            PendingIntent.FLAG_ONE_SHOT or PendingIntent.FLAG_IMMUTABLE)
+        applicationContext.getSystemService(Context.ALARM_SERVICE)
+        val alarmService: AlarmManager = applicationContext.getSystemService(Context.ALARM_SERVICE) as AlarmManager
+        alarmService.set(AlarmManager.ELAPSED_REALTIME, SystemClock.elapsedRealtime() + 1000, restartServicePendingIntent)
     }
 
     private fun showPresentationScreen() {
@@ -59,6 +59,7 @@ class FlipScreenService : Service() {
     }
 
     private fun showNotification() {
+
         val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager
         val channel = NotificationChannel(
             CatFlipScreenApplication.CHANNEL_ID,

app/src/main/java/net/mezimmah/catflipscreen/MainActivity.kt

@@ -1,11 +1,17 @@
 package net.mezimmah.catflipscreen
 
+import android.content.BroadcastReceiver
+import android.content.Context
 import android.content.Intent
+import android.content.IntentFilter
 import android.content.SharedPreferences
+import android.media.AudioManager
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
+import androidx.localbroadcastmanager.content.LocalBroadcastManager
 import androidx.preference.PreferenceFragmentCompat
 
+
 class MainActivity : AppCompatActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -17,8 +23,34 @@ class MainActivity : AppCompatActivity() {
                 .replace(R.id.settings, SettingsFragment())
                 .commit()
         }
-        startService(Intent(this, FlipScreenService::class.java))
+        startForegroundService(Intent(this, FlipScreenService::class.java))
+        registerReceivers()
     }
+
+    private fun registerReceivers() {
+        val broadCastReceiver = object : BroadcastReceiver() {
+            override fun onReceive(contxt: Context, intent: Intent) {
+                when (intent.action) {
+                    Intent.ACTION_POWER_CONNECTED,
+                    Intent.ACTION_POWER_DISCONNECTED,
+                    Intent.ACTION_BATTERY_CHANGED -> {
+                        LocalBroadcastManager.getInstance(contxt)
+                            .sendBroadcast(Intent(CatFlipScreenApplication.BROADCAST_BATTERY_CHANGED))
+                    }
+                    AudioManager.RINGER_MODE_CHANGED_ACTION -> {
+                        LocalBroadcastManager.getInstance(contxt)
+                            .sendBroadcast(Intent(CatFlipScreenApplication.BROADCAST_AUDIO_MODE_CHANGED))
+                    }
+                }
+            }
+        }
+        this.registerReceiver(broadCastReceiver, IntentFilter(Intent.ACTION_POWER_CONNECTED))
+        this.registerReceiver(broadCastReceiver, IntentFilter(Intent.ACTION_POWER_DISCONNECTED))
+        this.registerReceiver(broadCastReceiver, IntentFilter(Intent.ACTION_BATTERY_CHANGED))
+
+        this.registerReceiver(broadCastReceiver, IntentFilter(AudioManager.RINGER_MODE_CHANGED_ACTION))
+    }
+
     class SettingsFragment : PreferenceFragmentCompat(), SharedPreferences.OnSharedPreferenceChangeListener {
         override fun onCreatePreferences(savedInstanceState: Bundle?, rootKey: String?) {
             setPreferencesFromResource(R.xml.root_preferences, rootKey)

app/src/main/java/net/mezimmah/catflipscreen/MyReceiver.kt

@@ -3,13 +3,21 @@ package net.mezimmah.catflipscreen
 import android.content.BroadcastReceiver
 import android.content.Context
 import android.content.Intent
+import android.content.Intent.ACTION_BOOT_COMPLETED
 import android.util.Log
 
 
 class MyReceiver : BroadcastReceiver() {
 
     override fun onReceive(context: Context, intent: Intent) {
+        when (intent.action) {
+            ACTION_BOOT_COMPLETED -> startFlipScreenService(context)
+        }
+    }
+
+    private fun startFlipScreenService(context: Context) {
         context.startService(Intent(context, FlipScreenService::class.java))
         Log.i("Autostart", "started")
     }
+
 }

app/src/main/java/net/mezimmah/catflipscreen/PresentationScreen.kt

@@ -1,16 +1,173 @@
 package net.mezimmah.catflipscreen
 
 import android.app.Presentation
+import android.content.BroadcastReceiver
 import android.content.Context
+import android.content.Intent
+import android.content.IntentFilter
+import android.media.AudioManager
+import android.net.ConnectivityManager
+import android.net.Network
+import android.net.NetworkCapabilities
+import android.net.NetworkRequest
+import android.os.BatteryManager
 import android.os.Bundle
 import android.view.Display
+import android.view.View
+import android.widget.ImageView
+import android.widget.TextView
+import androidx.localbroadcastmanager.content.LocalBroadcastManager
+
 
 class PresentationScreen(outerContext: Context?, display: Display?) :
     Presentation(outerContext, display) {
 
+    private var connectivityManager: ConnectivityManager? = null
+    private var am: AudioManager? = null
+    private var batteryTextView: TextView? = null
+    private var batteryIconView: ImageView? = null
+    private var networkIconView: ImageView? = null
+    private var wifiIconView: ImageView? = null
+    private var audioLevelIconView: ImageView? = null
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
         setContentView(R.layout.layout_screen)
+
+        findViews()
+        
+        getSystemServices()
+
+        registerReceivers()
+
+        updateBatteryLevel()
+        updateNetworkConnectivity()
+        updateAudioMode()
+    }
+
+    private fun findViews() {
+        batteryTextView = findViewById(R.id.screen_status_bar_battery_level)
+        batteryIconView = findViewById(R.id.screen_status_bar_battery_icon)
+        networkIconView = findViewById(R.id.screen_status_bar_network_signal)
+        wifiIconView = findViewById(R.id.screen_status_bar_wifi_signal)
+        audioLevelIconView = findViewById(R.id.screen_status_bar_audio_level)
+    }
+    
+    private fun getSystemServices() {
+        am = context.getSystemService(Context.AUDIO_SERVICE) as AudioManager?
+        connectivityManager =
+            context.getSystemService(Context.CONNECTIVITY_SERVICE) as ConnectivityManager
+    }
+
+    private fun registerReceivers() {
+        // Register receiver for Battery Status Update from the main activity
+        val broadCastReceiver = object : BroadcastReceiver() {
+            override fun onReceive(contxt: Context, intent: Intent) {
+                when (intent.action) {
+                    CatFlipScreenApplication.BROADCAST_BATTERY_CHANGED -> {
+                        updateBatteryLevel()
+                    }
+                    CatFlipScreenApplication.BROADCAST_AUDIO_MODE_CHANGED -> {
+                        updateAudioMode()
+                    }
+                }
+            }
+        }
+        LocalBroadcastManager.getInstance(context)
+            .registerReceiver(broadCastReceiver, IntentFilter(CatFlipScreenApplication.BROADCAST_BATTERY_CHANGED))
+        LocalBroadcastManager.getInstance(context)
+            .registerReceiver(broadCastReceiver, IntentFilter(CatFlipScreenApplication.BROADCAST_AUDIO_MODE_CHANGED))
+
+        // Register receiver for the network updates
+        val networkRequest = NetworkRequest.Builder()
+            .addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
+            .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
+            .addTransportType(NetworkCapabilities.TRANSPORT_CELLULAR)
+            .build()
+        val networkCallback = object : ConnectivityManager.NetworkCallback() {
+            // network is available for use
+            override fun onAvailable(network: Network) {
+                updateNetworkConnectivity()
+                super.onAvailable(network)
+            }
+
+            // Network capabilities have changed for the network
+            override fun onCapabilitiesChanged(
+                network: Network,
+                networkCapabilities: NetworkCapabilities
+            ) {
+                super.onCapabilitiesChanged(network, networkCapabilities)
+                updateNetworkConnectivity()
+            }
+
+            // lost network connection
+            override fun onLost(network: Network) {
+                super.onLost(network)
+                updateNetworkConnectivity()
+            }
+        }
+        connectivityManager?.requestNetwork(networkRequest, networkCallback)
+    }
+
+    private fun updateBatteryLevel() {
+        val batteryStatus: Intent? = IntentFilter(Intent.ACTION_BATTERY_CHANGED).let { ifilter ->
+            context.registerReceiver(null, ifilter)
+        }
+        val status: Int = batteryStatus?.getIntExtra(BatteryManager.EXTRA_STATUS, -1) ?: -1
+        val isCharging: Boolean = status == BatteryManager.BATTERY_STATUS_CHARGING
+                || status == BatteryManager.BATTERY_STATUS_FULL
+
+        val batteryPct: Int = batteryStatus?.let { intent ->
+            val level: Int = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1)
+            val scale: Int = intent.getIntExtra(BatteryManager.EXTRA_SCALE, -1)
+            level * 100 / scale
+        }!!
+        batteryTextView!!.text = batteryPct.toString()
+        if (isCharging) {
+            batteryIconView!!.setImageResource(R.drawable.icons8_battery_50)
+        } else {
+            if (batteryPct < 15) {
+                batteryIconView!!.setImageResource(R.drawable.icons8_empty_battery_50)
+            } else if (batteryPct < 25) {
+                batteryIconView!!.setImageResource(R.drawable.icons8_low_battery_50)
+            } else if (batteryPct < 50) {
+                batteryIconView!!.setImageResource(R.drawable.icons8_battery_level_50)
+            } else if (batteryPct < 80) {
+                batteryIconView!!.setImageResource(R.drawable.icons8_charged_battery_50)
+            } else {
+                batteryIconView!!.setImageResource(R.drawable.icons8_full_battery_50)
+            }
+        }
+    }
+
+    private fun updateNetworkConnectivity() {
+        networkIconView?.post { networkIconView?.visibility = View.GONE }
+        wifiIconView?.post { wifiIconView?.visibility = View.GONE }
+        if (connectivityManager != null) {
+            val capabilities =
+                connectivityManager?.getNetworkCapabilities(connectivityManager?.activeNetwork)
+            if (capabilities != null) {
+                if (capabilities.hasTransport(NetworkCapabilities.TRANSPORT_CELLULAR)) {
+                    networkIconView?.post { networkIconView?.visibility = View.VISIBLE }
+                } else if (capabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI)) {
+                    wifiIconView?.post { wifiIconView?.visibility = View.VISIBLE }
+                }
+            }
+        }
+    }
+
+    private fun updateAudioMode() {
+        when (am!!.ringerMode) {
+            AudioManager.RINGER_MODE_SILENT -> {
+                audioLevelIconView?.setImageResource(R.drawable.icons8_no_sound_50)
+            }
+            AudioManager.RINGER_MODE_VIBRATE -> {
+                audioLevelIconView?.setImageResource(R.drawable.icons8_vibration_48)
+            }
+            AudioManager.RINGER_MODE_NORMAL -> {
+                audioLevelIconView?.setImageResource(R.drawable.icons8_sound_50)
+            }
+        }
     }
 }

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

@@ -5,30 +5,79 @@
     android:background="@color/black"
     android:orientation="vertical">
 
-    <TextView
-        android:id="@+id/screen_status_bar_text_view"
+    <LinearLayout
         android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:visibility="gone"
-        android:textAlignment="center"
-        android:textColor="@color/white"
-        android:textSize="14sp" />
-    <TextView
-        android:id="@+id/screen_insert_sim_text_view"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:textAlignment="center"
-        android:text=""
-        android:textColor="@color/white"
-        android:textSize="14sp" />
+        android:layoutDirection="rtl"
+        android:layout_height="wrap_content">
+
+        <TextView
+            android:layout_width="wrap_content"
+            android:text="@string/status_bar_percentage"
+            android:textSize="11sp"
+            android:textColor="@color/white"
+            android:layout_height="wrap_content"/>
+
+        <TextView
+            android:id="@+id/screen_status_bar_battery_level"
+            android:layout_width="wrap_content"
+            android:textSize="11sp"
+            android:textColor="@color/white"
+            android:layout_height="wrap_content"/>
+
+        <ImageView
+            android:contentDescription="@string/battery_status_icon"
+            android:id="@+id/screen_status_bar_battery_icon"
+            android:layout_width="25dp"
+            android:layout_height="15dp"
+            android:src="@drawable/icons8_battery_50"
+            android:layout_marginEnd="-3dp" />
+
+        <ImageView
+            android:contentDescription="@string/network_signal_icon"
+            android:id="@+id/screen_status_bar_network_signal"
+            android:layout_width="15dp"
+            android:src="@drawable/icons8_signal_48"
+            android:layout_height="12dp"
+            android:visibility="gone"
+            android:layout_marginEnd="-5dp"
+            android:paddingTop="3dp"/>
+
+        <ImageView
+            android:contentDescription="@string/wifi_signal_icon"
+            android:id="@+id/screen_status_bar_wifi_signal"
+            android:layout_width="15dp"
+            android:visibility="gone"
+            android:src="@drawable/icons8_wifi_50"
+            android:layout_height="12dp"
+            android:layout_marginEnd="-5dp"
+            android:paddingTop="3dp"/>
+
+        <ImageView
+            android:contentDescription="@string/audio_level_icon"
+            android:id="@+id/screen_status_bar_audio_level"
+            android:src="@drawable/icons8_vibration_48"
+            android:layout_width="15dp"
+            android:layout_height="12dp"
+            android:layout_marginEnd="-3dp"
+            android:paddingTop="3dp"/>
+
+
+    </LinearLayout>
 
     <TextClock
-        android:id="@+id/screen_clock_text_view"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:format12Hour="hh:mm EEE, MMMM dd"
+        android:format12Hour="hh:mm"
         android:textAlignment="center"
         android:textColor="@color/white"
-        android:textSize="14sp" />
+        android:textSize="22sp" />
+
+    <TextClock
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:format12Hour="EEE, MMMM dd"
+        android:textAlignment="center"
+        android:textColor="@color/white"
+        android:textSize="11sp" />
 
 </LinearLayout>