Improve localization support (+add Brazilian Portuguese localization)

app/src/main/java/dev/pranav/applock/AppLockApplication.kt

@@ -4,6 +4,7 @@ import android.app.Application
 import android.content.Context
 import android.os.Build
 import android.util.Log
+import dev.pranav.applock.core.utils.LocaleManager
 import dev.pranav.applock.core.utils.LogUtils
 import dev.pranav.applock.data.repository.AppLockRepository
 import org.lsposed.hiddenapibypass.HiddenApiBypass
@@ -16,7 +17,7 @@ class AppLockApplication : Application() {
         private set
 
     override fun attachBaseContext(base: Context?) {
-        super.attachBaseContext(base)
+        super.attachBaseContext(LocaleManager.wrap(base ?: return))
         initializeHiddenApiBypass()
     }
 

app/src/main/java/dev/pranav/applock/MainActivity.kt

@@ -1,5 +1,6 @@
 package dev.pranav.applock
 
+import android.content.Context
 import android.os.Bundle
 import androidx.activity.compose.setContent
 import androidx.activity.enableEdgeToEdge
@@ -10,12 +11,17 @@ import androidx.navigation.compose.rememberNavController
 import dev.pranav.applock.core.navigation.AppNavHost
 import dev.pranav.applock.core.navigation.NavigationManager
 import dev.pranav.applock.core.navigation.Screen
+import dev.pranav.applock.core.utils.LocaleManager
 import dev.pranav.applock.ui.theme.AppLockTheme
 
 class MainActivity : FragmentActivity() {
 
     private lateinit var navigationManager: NavigationManager
 
+    override fun attachBaseContext(newBase: Context?) {
+        super.attachBaseContext(LocaleManager.wrap(newBase ?: return))
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         enableEdgeToEdge()

app/src/main/java/dev/pranav/applock/core/navigation/AppNavigator.kt

@@ -1,5 +1,6 @@
 package dev.pranav.applock.core.navigation
 
+import android.content.Context
 import android.util.Log
 import androidx.activity.compose.LocalActivity
 import androidx.biometric.BiometricManager
@@ -9,13 +10,15 @@ import androidx.compose.animation.fadeIn
 import androidx.compose.animation.scaleIn
 import androidx.compose.runtime.Composable
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
 import androidx.core.content.ContextCompat
 import androidx.fragment.app.FragmentActivity
 import androidx.navigation.NavController
 import androidx.navigation.NavHostController
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import dev.pranav.applock.AppLockApplication
+import dev.pranav.applock.R
 import dev.pranav.applock.core.utils.LogUtils
 import dev.pranav.applock.data.repository.PreferencesRepository
 import dev.pranav.applock.features.antiuninstall.ui.AntiUninstallScreen
@@ -189,18 +192,18 @@ private fun handleBiometricAuthentication(
             }
         )
 
-        val promptInfo = createBiometricPromptInfo()
+        val promptInfo = createBiometricPromptInfo(context)
         biometricPrompt.authenticate(promptInfo)
     } catch (e: Exception) {
         Log.e(TAG, "Error during biometric authentication", e)
     }
 }
 
-private fun createBiometricPromptInfo(): BiometricPrompt.PromptInfo {
+private fun createBiometricPromptInfo(context: Context): BiometricPrompt.PromptInfo {
     return BiometricPrompt.PromptInfo.Builder()
-        .setTitle(BIOMETRIC_TITLE)
-        .setSubtitle(BIOMETRIC_SUBTITLE)
-        .setNegativeButtonText(BIOMETRIC_NEGATIVE_BUTTON)
+        .setTitle(context.getString(R.string.biometric_prompt_title))
+        .setSubtitle(context.getString(R.string.biometric_prompt_subtitle))
+        .setNegativeButtonText(context.getString(R.string.biometric_prompt_negative_button))
         .setAllowedAuthenticators(
             BiometricManager.Authenticators.BIOMETRIC_WEAK or
                     BiometricManager.Authenticators.BIOMETRIC_STRONG
@@ -226,6 +229,3 @@ private fun navigateToMain(navController: NavHostController) {
 private const val TAG = "AppNavHost"
 private const val ANIMATION_DURATION = 400
 private const val SCALE_INITIAL = 0.9f
-private const val BIOMETRIC_TITLE = "Confirm password"
-private const val BIOMETRIC_SUBTITLE = "Confirm biometric to continue"
-private const val BIOMETRIC_NEGATIVE_BUTTON = "Use PIN"

app/src/main/java/dev/pranav/applock/core/utils/AppLockUtils.kt

@@ -11,6 +11,7 @@ import android.provider.Settings
 import android.util.Log
 import android.widget.Toast
 import androidx.core.net.toUri
+import dev.pranav.applock.R
 import dev.pranav.applock.AppLockApplication
 import dev.pranav.applock.data.repository.AppLockRepository
 
@@ -53,7 +54,7 @@ fun launchBatterySettings(context: Context) {
 
         if (requestIgnoreIntent.resolveActivity(pm) != null) {
             context.startActivity(requestIgnoreIntent)
-            showBatteryOptimizationToast(context, "Battery optimization request sent")
+            showBatteryOptimizationToast(context, context.getString(R.string.utils_battery_optimization_sent_toast))
         } else {
             Log.w(
                 TAG,
@@ -63,7 +64,7 @@ fun launchBatterySettings(context: Context) {
         }
     } catch (e: Exception) {
         Log.e(TAG, "Failed to launch battery settings", e)
-        showBatteryOptimizationToast(context, "Failed to open battery settings")
+        showBatteryOptimizationToast(context, context.getString(R.string.utils_battery_open_failed_toast))
     }
 }
 
@@ -92,7 +93,7 @@ private fun launchGeneralBatterySettings(context: Context) {
         context.startActivity(generalBatteryIntent)
         showBatteryOptimizationToast(
             context,
-            "Please find and configure this app in battery settings"
+            context.getString(R.string.utils_battery_configure_toast)
         )
     } catch (e: Exception) {
         Log.e(TAG, "Failed to launch general battery settings", e)

app/src/main/java/dev/pranav/applock/core/utils/LocaleManager.kt

@@ -0,0 +1,25 @@
+package dev.pranav.applock.core.utils
+
+import android.content.Context
+import android.content.res.Configuration
+import dev.pranav.applock.data.repository.PreferencesRepository
+import java.util.Locale
+
+object LocaleManager {
+
+    fun wrap(context: Context): Context {
+        val prefs = context.getSharedPreferences("app_lock_settings", Context.MODE_PRIVATE)
+        val language = prefs.getString(PreferencesRepository.KEY_LANGUAGE, PreferencesRepository.LANGUAGE_SYSTEM)
+            ?: PreferencesRepository.LANGUAGE_SYSTEM
+        if (language == PreferencesRepository.LANGUAGE_SYSTEM) {
+            return context
+        }
+
+        val locale = Locale.forLanguageTag(language)
+        Locale.setDefault(locale)
+
+        val config = Configuration(context.resources.configuration)
+        config.setLocale(locale)
+        return context.createConfigurationContext(config)
+    }
+}

app/src/main/java/dev/pranav/applock/data/repository/AppLockRepository.kt

@@ -98,6 +98,9 @@ class AppLockRepository(private val context: Context) {
     fun isLoggingEnabled(): Boolean = preferencesRepository.isLoggingEnabled()
     fun setLoggingEnabled(enabled: Boolean) = preferencesRepository.setLoggingEnabled(enabled)
 
+    fun setLanguage(code: String) = preferencesRepository.setLanguage(code)
+    fun getLanguage(): String = preferencesRepository.getLanguage()
+
     fun setActiveBackend(backend: BackendImplementation) =
         backendServiceManager.setActiveBackend(backend)
 

app/src/main/java/dev/pranav/applock/data/repository/PreferencesRepository.kt

@@ -170,6 +170,14 @@ class PreferencesRepository(context: Context) {
         settingsPrefs.edit { putBoolean(KEY_LOGGING_ENABLED, enabled) }
     }
 
+    fun setLanguage(code: String) {
+        settingsPrefs.edit { putString(KEY_LANGUAGE, code) }
+    }
+
+    fun getLanguage(): String {
+        return settingsPrefs.getString(KEY_LANGUAGE, LANGUAGE_SYSTEM) ?: LANGUAGE_SYSTEM
+    }
+
     companion object {
         private const val PREFS_NAME_APP_LOCK = "app_lock_prefs"
         private const val PREFS_NAME_SETTINGS = "app_lock_settings"
@@ -197,5 +205,10 @@ class PreferencesRepository(context: Context) {
         const val LOCK_TYPE_PIN = "pin"
         const val LOCK_TYPE_PATTERN = "pattern"
         const val LOCK_TYPE_PASSWORD = "password"
+
+        const val KEY_LANGUAGE = "app_language"
+        const val LANGUAGE_SYSTEM = "system"
+        const val LANGUAGE_ENGLISH = "en"
+        const val LANGUAGE_PORTUGUESE_BR = "pt-BR"
     }
 }

app/src/main/java/dev/pranav/applock/features/admin/AdminDisableActivity.kt

@@ -2,6 +2,7 @@ package dev.pranav.applock.features.admin
 
 import android.app.admin.DevicePolicyManager
 import android.content.ComponentName
+import android.content.Context
 import android.os.Bundle
 import android.widget.Toast
 import androidx.activity.ComponentActivity
@@ -27,6 +28,7 @@ import androidx.compose.ui.text.style.TextAlign
 import androidx.compose.ui.unit.dp
 import dev.pranav.applock.R
 import dev.pranav.applock.core.broadcast.DeviceAdmin
+import dev.pranav.applock.core.utils.LocaleManager
 import dev.pranav.applock.core.utils.SecurityUtils
 import dev.pranav.applock.core.utils.appLockRepository
 import dev.pranav.applock.data.repository.AppLockRepository
@@ -41,6 +43,10 @@ class AdminDisableActivity : ComponentActivity() {
     private lateinit var devicePolicyManager: DevicePolicyManager
     private lateinit var deviceAdminComponentName: ComponentName
 
+    override fun attachBaseContext(newBase: Context?) {
+        super.attachBaseContext(LocaleManager.wrap(newBase ?: return))
+    }
+
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
         devicePolicyManager = getSystemService(DEVICE_POLICY_SERVICE) as DevicePolicyManager

app/src/main/java/dev/pranav/applock/features/antiuninstall/ui/AntiUninstallScreen.kt

@@ -53,6 +53,7 @@ import androidx.compose.ui.Modifier
 import androidx.compose.ui.draw.clip
 import androidx.compose.ui.graphics.asImageBitmap
 import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.res.stringResource
 import androidx.compose.ui.text.font.FontWeight
 import androidx.compose.ui.text.style.TextOverflow
 import androidx.compose.ui.unit.dp
@@ -63,6 +64,7 @@ import androidx.lifecycle.ViewModel
 import androidx.lifecycle.viewModelScope
 import androidx.lifecycle.viewmodel.compose.viewModel
 import androidx.navigation.NavController
+import dev.pranav.applock.R
 import dev.pranav.applock.core.utils.appLockRepository
 import dev.pranav.applock.core.utils.blockUninstallForUser
 import dev.pranav.applock.core.utils.unblockUninstallForUser
@@ -263,7 +265,7 @@ fun AntiUninstallScreen(
         modifier = Modifier.fillMaxSize(),
         topBar = {
             SearchTopBar(
-                title = "Anti-Uninstall Protection",
+                title = stringResource(R.string.anti_uninstall_screen_title),
                 searchQuery = searchQuery,
                 onSearchQueryChange = viewModel::updateSearchQuery,
                 onBack = { navController.navigateUp() },
@@ -283,7 +285,7 @@ fun AntiUninstallScreen(
         ) {
             item {
                 Text(
-                    text = "Select apps that will be protected from uninstallation.",
+                    text = stringResource(R.string.anti_uninstall_screen_desc),
                     style = MaterialTheme.typography.bodySmall,
                     color = MaterialTheme.colorScheme.onSurfaceVariant
                 )
@@ -310,7 +312,7 @@ fun AntiUninstallScreen(
                 if (protectedNotInList.isNotEmpty()) {
                     item {
                         Text(
-                            text = "Manually Added Packages",
+                            text = stringResource(R.string.anti_uninstall_manual_packages_title),
                             style = MaterialTheme.typography.titleMedium,
                             fontWeight = FontWeight.SemiBold,
                             modifier = Modifier.padding(bottom = 4.dp)
@@ -324,7 +326,7 @@ fun AntiUninstallScreen(
                     }
                     item {
                         Text(
-                            text = "Installed Apps",
+                            text = stringResource(R.string.anti_uninstall_installed_apps_title),
                             style = MaterialTheme.typography.titleMedium,
                             fontWeight = FontWeight.SemiBold,
                             modifier = Modifier.padding(top = 8.dp, bottom = 4.dp)
@@ -347,19 +349,19 @@ fun AntiUninstallScreen(
         AlertDialog(
             onDismissRequest = { showManualAddDialog.value = false },
             properties = DialogProperties(usePlatformDefaultWidth = false),
-            title = { Text("Add Package Manually") },
+            title = { Text(stringResource(R.string.anti_uninstall_manual_add_dialog_title)) },
             text = {
                 Column(Modifier.fillMaxWidth(0.8f)) {
                     Text(
-                        text = "Enter the package name of the app you want to protect:",
+                        text = stringResource(R.string.anti_uninstall_manual_add_dialog_text),
                         style = MaterialTheme.typography.bodyMedium,
                         modifier = Modifier.padding(bottom = 16.dp)
                     )
                     OutlinedTextField(
                         value = manualPackageName,
                         onValueChange = viewModel::updateManualPackageName,
-                        label = { Text("Package Name") },
-                        placeholder = { Text("com.example.app") },
+                        label = { Text(stringResource(R.string.anti_uninstall_package_name_label)) },
+                        placeholder = { Text(stringResource(R.string.anti_uninstall_package_name_placeholder)) },
                         modifier = Modifier.fillMaxWidth(),
                         singleLine = true
                     )
@@ -372,10 +374,10 @@ fun AntiUninstallScreen(
                         showManualAddDialog.value = false
                     },
                     enabled = manualPackageName.isNotBlank()
-                ) { Text("Add") }
+                ) { Text(stringResource(R.string.add_button)) }
             },
             dismissButton = {
-                TextButton(onClick = { showManualAddDialog.value = false }) { Text("Cancel") }
+                TextButton(onClick = { showManualAddDialog.value = false }) { Text(stringResource(R.string.cancel_button)) }
             }
         )
     }
@@ -391,20 +393,20 @@ fun AntiUninstallScreen(
             title = {
                 Text(
                     text = when (shizukuState) {
-                        ShizukuState.NOT_INSTALLED -> "Shizuku Not Installed"
-                        ShizukuState.NOT_RUNNING -> "Shizuku Not Running"
-                        ShizukuState.PERMISSION_DENIED -> "Permission Required"
-                        else -> "Shizuku Setup"
+                        ShizukuState.NOT_INSTALLED -> stringResource(R.string.anti_uninstall_shizuku_not_installed_title)
+                        ShizukuState.NOT_RUNNING -> stringResource(R.string.anti_uninstall_shizuku_not_running_title)
+                        ShizukuState.PERMISSION_DENIED -> stringResource(R.string.anti_uninstall_shizuku_permission_required_title)
+                        else -> stringResource(R.string.anti_uninstall_shizuku_setup_title)
                     }
                 )
             },
             text = {
                 Column(Modifier.fillMaxWidth(0.8f)) {
                     Text(
                         text = when (shizukuState) {
-                            ShizukuState.NOT_INSTALLED -> "Shizuku is required to configure Anti-Uninstall protection without root.\n\nPlease install Shizuku from the Play Store or GitHub to continue."
-                            ShizukuState.NOT_RUNNING -> "Shizuku is installed, but the background service has not been started yet (Binder hasn't been received).\n\nPlease open the Shizuku application and start the service via Wireless Debugging or Root."
-                            ShizukuState.PERMISSION_DENIED -> "Shizuku is active, but this application needs your permission authorization to configure package restrictions.\n\nThankfully, Shizuku is only used while blocking/unblocking uninstalls, so it doesn't need to stay running forever!"
+                            ShizukuState.NOT_INSTALLED -> stringResource(R.string.anti_uninstall_shizuku_not_installed_text)
+                            ShizukuState.NOT_RUNNING -> stringResource(R.string.anti_uninstall_shizuku_not_running_text)
+                            ShizukuState.PERMISSION_DENIED -> stringResource(R.string.anti_uninstall_shizuku_permission_required_text)
                             else -> ""
                         },
                         style = MaterialTheme.typography.bodyMedium
@@ -441,18 +443,18 @@ fun AntiUninstallScreen(
                 ) {
                     Text(
                         text = when (shizukuState) {
-                            ShizukuState.NOT_INSTALLED -> "Install Shizuku"
-                            ShizukuState.NOT_RUNNING -> "Open Shizuku"
-                            ShizukuState.PERMISSION_DENIED -> "Grant Permission"
-                            else -> "Confirm"
+                            ShizukuState.NOT_INSTALLED -> stringResource(R.string.anti_uninstall_install_shizuku_button)
+                            ShizukuState.NOT_RUNNING -> stringResource(R.string.anti_uninstall_open_shizuku_button)
+                            ShizukuState.PERMISSION_DENIED -> stringResource(R.string.grant_permission_button)
+                            else -> stringResource(R.string.confirm_button)
                         }
                     )
                 }
             },
             dismissButton = {
                 TextButton(onClick = {
                     navController.popBackStack()
-                }) { Text("Go Back") }
+                }) { Text(stringResource(R.string.go_back_button)) }
             }
         )
     }
@@ -484,15 +486,15 @@ private fun SearchTopBar(
                 verticalAlignment = Alignment.CenterVertically
             ) {
                 IconButton(onClick = onBack) {
-                    Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = "Back")
+                    Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = stringResource(R.string.back_cd))
                 }
                 Text(
                     text = title,
                     style = MaterialTheme.typography.titleLarge,
                     modifier = Modifier.weight(1f)
                 )
                 IconButton(onClick = onAdd) {
-                    Icon(Icons.Default.Add, contentDescription = "Add package manually")
+                    Icon(Icons.Default.Add, contentDescription = stringResource(R.string.anti_uninstall_add_manual_cd))
                 }
             }
 
@@ -505,7 +507,7 @@ private fun SearchTopBar(
                 OutlinedTextField(
                     value = searchQuery,
                     onValueChange = onSearchQueryChange,
-                    placeholder = { Text("Search apps or package names...") },
+                    placeholder = { Text(stringResource(R.string.anti_uninstall_search_placeholder)) },
                     leadingIcon = { Icon(Icons.Default.Search, contentDescription = null) },
                     modifier = Modifier.fillMaxWidth(),
                     singleLine = true,
@@ -593,7 +595,7 @@ private fun ManualPackageItem(packageName: String, onToggle: () -> Unit) {
                     overflow = TextOverflow.Ellipsis
                 )
                 Text(
-                    text = "Manually added package",
+                    text = stringResource(R.string.anti_uninstall_manually_added_label),
                     style = MaterialTheme.typography.bodySmall,
                     color = MaterialTheme.colorScheme.onSurfaceVariant
                 )