Added new setting "Show on the lock screen"

MainActivity applies locked screen flags according to the setting

app/src/main/AndroidManifest.xml

@@ -39,7 +39,8 @@
 
         <activity
             android:name=".activities.MainActivity"
-            android:theme="@style/AppTheme" />
+            android:theme="@style/AppTheme"
+            android:showOnLockScreen="true" />
 
         <activity
             android:name=".activities.WidgetTorchConfigureActivity"

app/src/main/kotlin/com/simplemobiletools/flashlight/activities/MainActivity.kt

@@ -11,7 +11,9 @@ import android.content.pm.PackageManager
 import android.content.pm.ShortcutInfo
 import android.graphics.drawable.Icon
 import android.graphics.drawable.LayerDrawable
+import android.os.Build
 import android.os.Bundle
+import android.view.WindowManager
 import androidx.activity.ComponentActivity
 import androidx.activity.compose.ManagedActivityResultLauncher
 import androidx.activity.compose.rememberLauncherForActivityResult
@@ -283,6 +285,7 @@ class MainActivity : ComponentActivity() {
 
         requestedOrientation = if (preferences.forcePortraitMode) ActivityInfo.SCREEN_ORIENTATION_PORTRAIT else ActivityInfo.SCREEN_ORIENTATION_SENSOR
         invalidateOptionsMenu()
+        applyShowOnLockedScreen(preferences.showOnLockedScreen)
 
         checkShortcuts()
     }
@@ -294,6 +297,7 @@ class MainActivity : ComponentActivity() {
             viewModel.hideTimer()
             (getSystemService(Context.ALARM_SERVICE) as AlarmManager).cancel(getShutDownPendingIntent())
         }
+        applyShowOnLockedScreen(preferences.showOnLockedScreen)
     }
 
     private fun launchSettings() {
@@ -564,4 +568,19 @@ class MainActivity : ComponentActivity() {
             _stroboscopeActive.value = camera.toggleStroboscope()
         }
     }
+
+    private fun applyShowOnLockedScreen(flag: Boolean) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O_MR1) {
+            setShowWhenLocked(flag)
+            setTurnScreenOn(flag)
+        } else {
+            val windowFlags = WindowManager.LayoutParams.FLAG_SHOW_WHEN_LOCKED or
+                    WindowManager.LayoutParams.FLAG_TURN_SCREEN_ON
+
+            if (flag)
+                window.addFlags(windowFlags)
+            else
+                window.clearFlags(windowFlags)
+        }
+    }
 }

app/src/main/kotlin/com/simplemobiletools/flashlight/activities/SettingsActivity.kt

@@ -51,6 +51,7 @@ class SettingsActivity : ComponentActivity() {
                             }
                         }
                         val turnFlashlightOnStartupFlow by preferences.turnFlashlightOnFlow.collectAsStateWithLifecycle(preferences.turnFlashlightOn)
+                        val showOnLockedScreenFlow by preferences.showOnLockedScreenFlow.collectAsStateWithLifecycle(preferences.showOnLockedScreen)
                         val forcePortraitModeFlow by preferences.forcePortraitModeFlow.collectAsStateWithLifecycle(preferences.forcePortraitMode)
                         val showBrightDisplayButtonFlow by preferences.brightDisplayFlow.collectAsStateWithLifecycle(preferences.brightDisplay)
                         val showSosButtonFlow by preferences.sosFlow.collectAsStateWithLifecycle(preferences.sos)
@@ -67,6 +68,7 @@ class SettingsActivity : ComponentActivity() {
                             },
                             onSetupLanguagePress = ::launchChangeAppLanguageIntent,
                             turnFlashlightOnStartupChecked = turnFlashlightOnStartupFlow,
+                            showOnLockedScreenChecked = showOnLockedScreenFlow,
                             forcePortraitModeChecked = forcePortraitModeFlow,
                             showBrightDisplayButtonChecked = showBrightDisplayButtonFlow,
                             showSosButtonChecked = showSosButtonFlow,
@@ -74,6 +76,9 @@ class SettingsActivity : ComponentActivity() {
                             onTurnFlashlightOnStartupPress = {
                                 preferences.turnFlashlightOn = it
                             },
+                            onShowOnLockedScreenPress = {
+                                preferences.showOnLockedScreen = it
+                            },
                             onForcePortraitModePress = {
                                 preferences.forcePortraitMode = it
                             },

app/src/main/kotlin/com/simplemobiletools/flashlight/helpers/Config.kt

@@ -33,6 +33,12 @@ class Config(context: Context) : BaseConfig(context) {
 
     val turnFlashlightOnFlow = ::turnFlashlightOn.asFlowNonNull()
 
+    var showOnLockedScreen: Boolean
+        get() = prefs.getBoolean(SHOW_ON_LOCKED_SCREEN, false)
+        set(showOnLockedScreen) = prefs.edit().putBoolean(SHOW_ON_LOCKED_SCREEN, showOnLockedScreen).apply()
+
+    val showOnLockedScreenFlow = ::showOnLockedScreen.asFlowNonNull()
+
     var stroboscopeProgress: Int
         get() = prefs.getInt(STROBOSCOPE_PROGRESS, 1000)
         set(stroboscopeProgress) = prefs.edit().putInt(STROBOSCOPE_PROGRESS, stroboscopeProgress).apply()

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

@@ -4,6 +4,7 @@ const val BRIGHT_DISPLAY = "bright_display"
 const val BRIGHT_DISPLAY_COLOR = "bright_display_color"
 const val STROBOSCOPE = "stroboscope"
 const val TURN_FLASHLIGHT_ON = "turn_flashlight_on"
+const val SHOW_ON_LOCKED_SCREEN = "show_on_locked_screen"
 const val IS_ENABLED = "is_enabled"
 const val TOGGLE = "toggle"
 const val TOGGLE_WIDGET_UI = "toggle_widget_ui"

app/src/main/kotlin/com/simplemobiletools/flashlight/screens/SettingsScreen.kt

@@ -52,6 +52,7 @@ internal fun GeneralSettingsSection(
     showDisplayLanguage: Boolean,
     displayLanguage: String,
     turnFlashlightOnStartupChecked: Boolean,
+    showOnLockedScreenChecked: Boolean,
     forcePortraitModeChecked: Boolean,
     showBrightDisplayButtonChecked: Boolean,
     showSosButtonChecked: Boolean,
@@ -59,6 +60,7 @@ internal fun GeneralSettingsSection(
     onUseEnglishPress: (Boolean) -> Unit,
     onSetupLanguagePress: () -> Unit,
     onTurnFlashlightOnStartupPress: (Boolean) -> Unit,
+    onShowOnLockedScreenPress: (Boolean) -> Unit,
     onForcePortraitModePress: (Boolean) -> Unit,
     onShowBrightDisplayButtonPress: (Boolean) -> Unit,
     onShowSosButtonPress: (Boolean) -> Unit,
@@ -83,6 +85,11 @@ internal fun GeneralSettingsSection(
         initialValue = turnFlashlightOnStartupChecked,
         onChange = onTurnFlashlightOnStartupPress
     )
+    SettingsCheckBoxComponent(
+        label = stringResource(id = R.string.show_on_locked_screen),
+        initialValue = showOnLockedScreenChecked,
+        onChange = onShowOnLockedScreenPress
+    )
     SettingsCheckBoxComponent(
         label = stringResource(id = com.simplemobiletools.commons.R.string.force_portrait_mode),
         initialValue = forcePortraitModeChecked,
@@ -123,6 +130,7 @@ private fun SettingsScreenPreview() {
                     showDisplayLanguage = true,
                     displayLanguage = "English",
                     turnFlashlightOnStartupChecked = false,
+                    showOnLockedScreenChecked = false,
                     forcePortraitModeChecked = true,
                     showBrightDisplayButtonChecked = true,
                     showSosButtonChecked = true,
@@ -130,6 +138,7 @@ private fun SettingsScreenPreview() {
                     onUseEnglishPress = {},
                     onSetupLanguagePress = {},
                     onTurnFlashlightOnStartupPress = {},
+                    onShowOnLockedScreenPress = {},
                     onForcePortraitModePress = {},
                     onShowBrightDisplayButtonPress = {},
                     onShowSosButtonPress = {},

app/src/main/res/values-ar/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">إظهار زر SOS</string>
     <string name="turn_flashlight_on">قم بتشغيل المصباح عند بدء التشغيل</string>
+    <string name="show_on_locked_screen">إظهار  التطبيق فوق شاشة القفل</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-az/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Show an SOS button</string>
     <string name="turn_flashlight_on">Başlanğıcda fənəri aç</string>
+    <string name="show_on_locked_screen">Kilid ekranında göstərin</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-be/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Паказваць кнопку СОС</string>
     <string name="turn_flashlight_on">Уключаць ліхтарык пры запуску</string>
+    <string name="show_on_locked_screen">Паказваць на экране блакіроўкі</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-ca/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Mostra un botó de SOS</string>
     <string name="turn_flashlight_on">Activa la llanterna a l\'inici</string>
+    <string name="show_on_locked_screen">Mostra en la pantalla de bloqueig</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-cs/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Zobrazit tlačítko SOS</string>
     <string name="turn_flashlight_on">Zapnout svítilnu po spuštění</string>
+    <string name="show_on_locked_screen">Zobrazit na uzamčené obrazovce</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-de/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Eine SOS-Schaltfläche zeigen</string>
     <string name="turn_flashlight_on">Taschenlampe beim Start einschalten</string>
+    <string name="show_on_locked_screen">Auf dem Sperrbildschirm anzeigen</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-el/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Προβολή κουμπιού SOS</string>
     <string name="turn_flashlight_on">Άνοιγμα του φακού κατά την εκκίνηση</string>
+    <string name="show_on_locked_screen">Εμφάνιση στην Οθόνη Κλειδώματος</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-es/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Mostrar un botón de SOS</string>
     <string name="turn_flashlight_on">Encender la linterna al inicio</string>
+    <string name="show_on_locked_screen">Mostrar en la pantalla de bloqueo</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-et/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Näita SOS-nuppu</string>
     <string name="turn_flashlight_on">Rakenduse käivitamisel lülita taskulamp sisse</string>
+    <string name="show_on_locked_screen">Kuva lukustusekraanil</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-fi/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Näytä SOS-painike</string>
     <string name="turn_flashlight_on">Kytke taskulamppu päälle käynnistyksen yhteydessä</string>
+    <string name="show_on_locked_screen">Näytä lukitusnäytöllä</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-fr/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Afficher un bouton « S.O.S. »</string>
     <string name="turn_flashlight_on">Allumer la lampe de poche au démarrage</string>
+    <string name="show_on_locked_screen">Afficher sur l\'écran de verrouillage</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-hu/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">SOS gomb megjelenítése</string>
     <string name="turn_flashlight_on">Zseblámpa bekapcsolása indításkor</string>
+    <string name="show_on_locked_screen">Megjelenítés a zárolt képernyőn</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-it/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Mostra un pulsante SOS</string>
     <string name="turn_flashlight_on">Accendi la torcia all\'avvio</string>
+    <string name="show_on_locked_screen">Mostra sulla schermata di blocco</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-iw/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">הצג כפתור SOS</string>
     <string name="turn_flashlight_on">הדלק את הפנס בעת ההפעלה</string>
+    <string name="show_on_locked_screen">הצג במסך הנעילה</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-ja/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">SOSボタンを表示</string>
     <string name="turn_flashlight_on">起動時にフラッシュライトを点灯</string>
+    <string name="show_on_locked_screen">ロック画面に表示</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-lt/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Rodyti SOS mygtuką</string>
     <string name="turn_flashlight_on">Įjungti žibintuvėlį paleidus programėlę</string>
+    <string name="show_on_locked_screen">Rodyti užrakinimo ekrane</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-nb-rNO/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Vis SOS-knapp</string>
     <string name="turn_flashlight_on">Skru på lommelykt ved oppstart</string>
+    <string name="show_on_locked_screen">Vis på låseskjerm</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-nl/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Knop voor SOS-noodsignaal tonen</string>
     <string name="turn_flashlight_on">Zaklamp bij starten aanzetten</string>
+    <string name="show_on_locked_screen">Toon op vergrendelscherm</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-pl/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboskop</string>
     <string name="show_sos">Pokazuj przycisk SOS</string>
     <string name="turn_flashlight_on">Włączaj latarkę przy uruchomieniu</string>
+    <string name="show_on_locked_screen">Pokazuj na ekranie blokady</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-pt-rBR/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Mostrar o botão de SOS</string>
     <string name="turn_flashlight_on">Ligar a lanterna ao iniciar o app</string>
+    <string name="show_on_locked_screen">Mostrar na tela de bloqueio</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-pt-rPT/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Mostrar botão de SOS</string>
     <string name="turn_flashlight_on">Acender a lanterna ao iniciar</string>
+    <string name="show_on_locked_screen">Mostrar na tela de bloqueio</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-pt/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Mostrar botão de SOS</string>
     <string name="turn_flashlight_on">Acender a lanterna ao iniciar</string>
+    <string name="show_on_locked_screen">Mostrar na tela de bloqueio</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-ro/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Afișați un buton SOS</string>
     <string name="turn_flashlight_on">Porniți lanterna la pornire</string>
+    <string name="show_on_locked_screen">Arată pe ecranul de blocare</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-ru/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Показать кнопку SOS</string>
     <string name="turn_flashlight_on">Включать фонарик при запуске</string>
+    <string name="show_on_locked_screen">Показывать на экране блокировки</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-sk/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Zobraziť tlačidlo SOS</string>
     <string name="turn_flashlight_on">Aktivovať baterku po spustení</string>
+    <string name="show_on_locked_screen">Zobraziť na uzamknutej obrazovke</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-tr/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">SOS düğmesini göster</string>
     <string name="turn_flashlight_on">Başlangıçta feneri aç</string>
+    <string name="show_on_locked_screen">Kilit ekranında göster</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

app/src/main/res/values-uk/strings.xml

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Показати кнопку SOS</string>
     <string name="turn_flashlight_on">Вмикати ліхтарик при запуску</string>
+    <string name="show_on_locked_screen">Показувати на заблокованому екрані</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res

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

@@ -11,6 +11,7 @@
     <string name="stroboscope">Stroboscope</string>
     <string name="show_sos">Show an SOS button</string>
     <string name="turn_flashlight_on">Turn flashlight on at startup</string>
+    <string name="show_on_locked_screen">Show on the lock screen</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res