feat: improve onboarding

app/build.gradle.kts

@@ -74,6 +74,7 @@ dependencies {
     implementation(libs.androidx.core.ktx)
     implementation(libs.androidx.lifecycle.runtime.ktx)
     implementation(libs.androidx.lifecycle.runtime.compose)
+    implementation(libs.androidx.material3)
     implementation(libs.androidx.ui)
     testImplementation(libs.junit)
     androidTestImplementation(platform(libs.androidx.compose.bom))

app/src/main/java/com/bitcointxoko/gudariwallet/MainActivity.kt

@@ -25,7 +25,7 @@ import kotlinx.coroutines.flow.SharingStarted
 import kotlinx.coroutines.flow.stateIn
 import com.bitcointxoko.gudariwallet.security.EncryptedSecretStore
 import com.bitcointxoko.gudariwallet.service.WalletNotificationService
-import com.bitcointxoko.gudariwallet.ui.OnboardingScreen
+import com.bitcointxoko.gudariwallet.ui.onboarding.OnboardingScreen
 import com.bitcointxoko.gudariwallet.ui.WalletScreen
 import com.bitcointxoko.gudariwallet.ui.WalletViewModel
 import com.bitcointxoko.gudariwallet.ui.WalletViewModelFactory
@@ -37,8 +37,6 @@ import kotlinx.coroutines.flow.MutableSharedFlow
 import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import cafe.adriel.lyricist.ProvideStrings
-import cafe.adriel.lyricist.rememberStrings
-import com.bitcointxoko.gudariwallet.i18n.AppStrings
 
 class MainActivity : AppCompatActivity() {
 
@@ -129,23 +127,26 @@ class MainActivity : AppCompatActivity() {
                         LaunchedEffect(Unit) {
                             WalletNotificationService.start(this@MainActivity)
                             requestNotificationPermissionIfNeeded()
-                            promptBatteryOptimizationIfNeeded()
+                            // promptBatteryOptimizationIfNeeded()
                         }
                         WalletScreen(
                             vm                 = vm,
                             nfcVm              = nfcVm,
                             pendingPaymentHash = pendingPaymentHash,
                             pendingPaymentUri  = pendingPaymentUri,
-                            lyricist           = lyricist           // ← pass down
+                            lyricist           = lyricist
                         )
                     } else {
                         OnboardingScreen(
                             secretStore                     = secretStore,
-                            onComplete  = { }
+                            onRequestNotificationPermission = { requestNotificationPermissionIfNeeded() }, // ← new
+                            onComplete                      = {
+                                // WalletNotificationService.start(this@MainActivity)
+                                // No permission/battery calls here — handled in-flow
+                            }
                         )
                     }
-
+                }
-                } // end ProvideStrings
             }
         }
     }

app/src/main/java/com/bitcointxoko/gudariwallet/i18n/EnStrings.kt

@@ -307,16 +307,30 @@ val EnHomeStrings = AppStrings(
     paymentRowNoMemo      = "No memo",
     paymentRowPending     = "Pending",
 
-    // ── OnboardingScreen ──────────────────────────────────────────────────────
+    onboarding = OnboardingStrings(
-    onboardingTitle           = "Connect to LNbits",
+        back                    = "Back",
-    onboardingSubtitle        = "Enter your LNbits server URL and API keys.",
+        next                    = "Next",
-    onboardingServerUrl       = "Server URL",
+        done                    = "Done",
-    onboardingServerUrlHint   = "https://bitcointxoko.org",
+        title                   = "Connect to LNbits",
-    onboardingInvoiceKey      = "Invoice Key (read-only)",
+        subtitle                = "Enter your LNbits server URL and API keys.",
-    onboardingAdminKey        = "Admin Key (for sending)",
+        serverUrl               = "Server URL",
-    onboardingHideAdminKey    = "Hide",
+        serverUrlHint           = "https://bitcointxoko.org",
-    onboardingShowAdminKey    = "Show",
+        invoiceKey              = "Invoice Key (read-only)",
-    onboardingFieldsRequired  = "All fields are required.",
+        adminKey                = "Admin Key (for sending)",
-    onboardingConnect         = "Connect",
+        hideAdminKey            = "Hide",
+        showAdminKey            = "Show",
+        fieldsRequired          = "All fields are required.",
+        connect                 = "Connect",
+        notificationsTitle      = "Stay in the loop",
+        notificationsSubtitle   = "Get notified instantly when you receive a payment.",
+        allowNotifications      = "Allow Notifications",
+        notificationsNote       = "You can change this later in system Settings.",
+        notificationsAutoGranted = "Notifications are enabled automatically on your device.",
+        batteryTitle            = "Background activity",
+        batterySubtitle         = "Allow Gudari Wallet to run unrestricted so notifications arrive even when the app is closed.",
+        openSettings            = "Open Settings",
+        batteryNote             = "Tap 'Battery' → 'Unrestricted'. You can skip this and change it later.",
+        batteryAlreadyUnrestricted = "You're all set — no restrictions detected."
+    )
 )
 

app/src/main/java/com/bitcointxoko/gudariwallet/i18n/EsStrings.kt

@@ -306,15 +306,29 @@ val EsHomeStrings = AppStrings(
     paymentRowNoMemo      = "Sin nota",
     paymentRowPending     = "Pendiente",
 
-    // ── OnboardingScreen ──────────────────────────────────────────────────────
+    onboarding = OnboardingStrings(
-    onboardingTitle           = "Conectar a LNbits",
+        back                    = "Back",
-    onboardingSubtitle        = "Introduce la URL de tu servidor LNbits y las claves API.",
+        next                    = "Next",
-    onboardingServerUrl       = "URL del servidor",
+        done                    = "Done",
-    onboardingServerUrlHint   = "https://bitcointxoko.org",
+        title                   = "Connect to LNbits",
-    onboardingInvoiceKey      = "Clave de factura (solo lectura)",
+        subtitle                = "Enter your LNbits server URL and API keys.",
-    onboardingAdminKey        = "Clave de administrador (para enviar)",
+        serverUrl               = "Server URL",
-    onboardingHideAdminKey    = "Ocultar",
+        serverUrlHint           = "https://bitcointxoko.org",
-    onboardingShowAdminKey    = "Mostrar",
+        invoiceKey              = "Invoice Key (read-only)",
-    onboardingFieldsRequired  = "Todos los campos son obligatorios.",
+        adminKey                = "Admin Key (for sending)",
-    onboardingConnect         = "Conectar",
+        hideAdminKey            = "Hide",
+        showAdminKey            = "Show",
+        fieldsRequired          = "All fields are required.",
+        connect                 = "Connect",
+        notificationsTitle      = "Stay in the loop",
+        notificationsSubtitle   = "Get notified instantly when you receive a payment.",
+        allowNotifications      = "Allow Notifications",
+        notificationsNote       = "You can change this later in system Settings.",
+        notificationsAutoGranted = "Notifications are enabled automatically on your device.",
+        batteryTitle            = "Background activity",
+        batterySubtitle         = "Allow Gudari Wallet to run unrestricted so notifications arrive even when the app is closed.",
+        openSettings            = "Open Settings",
+        batteryNote             = "Tap 'Battery' → 'Unrestricted'. You can skip this and change it later.",
+        batteryAlreadyUnrestricted = "You're all set — no restrictions detected."
+    )
 )

app/src/main/java/com/bitcointxoko/gudariwallet/i18n/EuStrings.kt

@@ -306,15 +306,29 @@ val EuStrings = AppStrings(
     paymentRowNoMemo      = "Oharrik gabe",
     paymentRowPending     = "Zain",
 
-    // ── OnboardingScreen ──────────────────────────────────────────────────────
+    onboarding = OnboardingStrings(
-    onboardingTitle           = "Konektatu LNbits-era",
+        back                    = "Back",
-    onboardingSubtitle        = "Sartu zure LNbits zerbitzariaren URLa eta API gakoak.",
+        next                    = "Next",
-    onboardingServerUrl       = "Zerbitzariaren URLa",
+        done                    = "Done",
-    onboardingServerUrlHint   = "https://bitcointxoko.org",
+        title                   = "Connect to LNbits",
-    onboardingInvoiceKey      = "Faktura-gakoa (irakurtzeko soilik)",
+        subtitle                = "Enter your LNbits server URL and API keys.",
-    onboardingAdminKey        = "Administrazio-gakoa (bidaltzeko)",
+        serverUrl               = "Server URL",
-    onboardingHideAdminKey    = "Ezkutatu",
+        serverUrlHint           = "https://bitcointxoko.org",
-    onboardingShowAdminKey    = "Erakutsi",
+        invoiceKey              = "Invoice Key (read-only)",
-    onboardingFieldsRequired  = "Eremu guztiak beharrezkoak dira.",
+        adminKey                = "Admin Key (for sending)",
-    onboardingConnect         = "Konektatu",
+        hideAdminKey            = "Hide",
+        showAdminKey            = "Show",
+        fieldsRequired          = "All fields are required.",
+        connect                 = "Connect",
+        notificationsTitle      = "Stay in the loop",
+        notificationsSubtitle   = "Get notified instantly when you receive a payment.",
+        allowNotifications      = "Allow Notifications",
+        notificationsNote       = "You can change this later in system Settings.",
+        notificationsAutoGranted = "Notifications are enabled automatically on your device.",
+        batteryTitle            = "Background activity",
+        batterySubtitle         = "Allow Gudari Wallet to run unrestricted so notifications arrive even when the app is closed.",
+        openSettings            = "Open Settings",
+        batteryNote             = "Tap 'Battery' → 'Unrestricted'. You can skip this and change it later.",
+        batteryAlreadyUnrestricted = "You're all set — no restrictions detected."
+    )
 )

app/src/main/java/com/bitcointxoko/gudariwallet/i18n/Strings.kt

@@ -303,15 +303,31 @@ data class AppStrings(
     val paymentRowNoMemo      : String,
     val paymentRowPending     : String,
 
-    // ── OnboardingScreen ──────────────────────────────────────────────────────
+    val onboarding: OnboardingStrings
-    val onboardingTitle           : String,
+)
-    val onboardingSubtitle        : String,
+
-    val onboardingServerUrl       : String,
+data class OnboardingStrings(
-    val onboardingServerUrlHint   : String,
+    val title: String,
-    val onboardingInvoiceKey      : String,
+    val subtitle: String,
-    val onboardingAdminKey        : String,
+    val serverUrl: String,
-    val onboardingHideAdminKey    : String,
+    val serverUrlHint: String,
-    val onboardingShowAdminKey    : String,
+    val invoiceKey: String,
-    val onboardingFieldsRequired  : String,
+    val adminKey: String,
-    val onboardingConnect         : String,
+    val showAdminKey: String,
+    val hideAdminKey: String,
+    val connect: String,
+    val fieldsRequired: String,
+    val back: String,
+    val next: String,
+    val done: String,
+    val notificationsTitle: String,
+    val notificationsSubtitle: String,
+    val allowNotifications: String,
+    val notificationsNote: String,
+    val notificationsAutoGranted: String,
+    val batteryTitle: String,
+    val batterySubtitle: String,
+    val openSettings: String,
+    val batteryNote: String,
+    val batteryAlreadyUnrestricted: String
 )

app/src/main/java/com/bitcointxoko/gudariwallet/security/SecretStore.kt

@@ -18,6 +18,7 @@ interface SecretStore {
     suspend fun isOnboarded(): Boolean
 
     suspend fun saveCredentials(baseUrl: String, invoiceKey: String, adminKey: String)
+    suspend fun setOnboarded()
 }
 
 class EncryptedSecretStore(context: Context) : SecretStore {
@@ -53,9 +54,15 @@ class EncryptedSecretStore(context: Context) : SecretStore {
                 .setBaseUrl(baseUrl)
                 .setInvoiceKey(invoiceKey)
                 .setAdminKey(adminKey)
-                .setIsOnboarded(true)
                 .build()
         }
         Log.i(TAG, "Credentials saved and DataStore updated")
     }
+    override suspend fun setOnboarded() {
+        dataStore.updateData { current ->
+            current.toBuilder()
+                .setIsOnboarded(true)
+                .build()
+        }
+    }
 }

app/src/main/java/com/bitcointxoko/gudariwallet/ui/OnboardingScreen.kt

@@ -1,139 +0,0 @@
-package com.bitcointxoko.gudariwallet.ui
-
-import androidx.compose.foundation.layout.Arrangement
-import androidx.compose.foundation.layout.Column
-import androidx.compose.foundation.layout.Spacer
-import androidx.compose.foundation.layout.fillMaxSize
-import androidx.compose.foundation.layout.fillMaxWidth
-import androidx.compose.foundation.layout.height
-import androidx.compose.foundation.layout.padding
-import androidx.compose.foundation.text.KeyboardOptions
-import androidx.compose.material.icons.Icons
-import androidx.compose.material.icons.filled.Visibility
-import androidx.compose.material.icons.filled.VisibilityOff
-import androidx.compose.material3.Button
-import androidx.compose.material3.Icon
-import androidx.compose.material3.IconButton
-import androidx.compose.material3.MaterialTheme
-import androidx.compose.material3.OutlinedTextField
-import androidx.compose.material3.Text
-import androidx.compose.runtime.Composable
-import androidx.compose.runtime.getValue
-import androidx.compose.runtime.mutableStateOf
-import androidx.compose.runtime.remember
-import androidx.compose.runtime.rememberCoroutineScope
-import androidx.compose.runtime.setValue
-import androidx.compose.ui.Alignment
-import androidx.compose.ui.Modifier
-import androidx.compose.ui.text.input.KeyboardType
-import androidx.compose.ui.text.input.PasswordVisualTransformation
-import androidx.compose.ui.text.input.VisualTransformation
-import androidx.compose.ui.unit.dp
-import com.bitcointxoko.gudariwallet.LocalAppStrings
-import com.bitcointxoko.gudariwallet.security.SecretStore
-import kotlinx.coroutines.launch
-
-@Composable
-fun OnboardingScreen(
-    secretStore: SecretStore,
-    onComplete : () -> Unit
-) {
-    val strings = LocalAppStrings.current
-
-    var baseUrl      by remember { mutableStateOf("https://bitcointxoko.org") }
-    var invoiceKey   by remember { mutableStateOf("") }
-    var adminKey     by remember { mutableStateOf("") }
-    var adminVisible by remember { mutableStateOf(false) }
-    var error        by remember { mutableStateOf<String?>(null) }
-    val scope        = rememberCoroutineScope()
-
-    Column(
-        modifier            = Modifier
-            .fillMaxSize()
-            .padding(32.dp),
-        verticalArrangement = Arrangement.Center,
-        horizontalAlignment = Alignment.CenterHorizontally
-    ) {
-        Text(
-            text  = strings.onboardingTitle,                                   // ← "Connect to LNbits"
-            style = MaterialTheme.typography.headlineMedium
-        )
-        Spacer(Modifier.height(8.dp))
-        Text(
-            text  = strings.onboardingSubtitle,                                // ← "Enter your LNbits server URL and API keys."
-            style = MaterialTheme.typography.bodyMedium,
-            color = MaterialTheme.colorScheme.onSurfaceVariant
-        )
-        Spacer(Modifier.height(32.dp))
-
-        OutlinedTextField(
-            value           = baseUrl,
-            onValueChange   = { baseUrl = it },
-            label           = { Text(strings.onboardingServerUrl) },           // ← "Server URL"
-            placeholder     = { Text(strings.onboardingServerUrlHint) },       // ← "https://bitcointxoko.org"
-            singleLine      = true,
-            modifier        = Modifier.fillMaxWidth(),
-            keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Uri)
-        )
-        Spacer(Modifier.height(16.dp))
-
-        OutlinedTextField(
-            value                = invoiceKey,
-            onValueChange        = { invoiceKey = it },
-            label                = { Text(strings.onboardingInvoiceKey) },     // ← "Invoice Key (read-only)"
-            singleLine           = true,
-            modifier             = Modifier.fillMaxWidth(),
-            keyboardOptions      = KeyboardOptions(keyboardType = KeyboardType.Password),
-            visualTransformation = PasswordVisualTransformation()
-        )
-        Spacer(Modifier.height(16.dp))
-
-        OutlinedTextField(
-            value                = adminKey,
-            onValueChange        = { adminKey = it },
-            label                = { Text(strings.onboardingAdminKey) },       // ← "Admin Key (for sending)"
-            singleLine           = true,
-            modifier             = Modifier.fillMaxWidth(),
-            keyboardOptions      = KeyboardOptions(keyboardType = KeyboardType.Password),
-            visualTransformation = if (adminVisible) VisualTransformation.None
-            else              PasswordVisualTransformation(),
-            trailingIcon = {
-                IconButton(onClick = { adminVisible = !adminVisible }) {
-                    Icon(
-                        imageVector        = if (adminVisible) Icons.Default.VisibilityOff
-                        else               Icons.Default.Visibility,
-                        contentDescription = if (adminVisible) strings.onboardingHideAdminKey  // ← "Hide"
-                        else               strings.onboardingShowAdminKey   // ← "Show"
-                    )
-                }
-            }
-        )
-
-        error?.let {
-            Spacer(Modifier.height(8.dp))
-            Text(
-                text  = it,
-                color = MaterialTheme.colorScheme.error,
-                style = MaterialTheme.typography.bodySmall
-            )
-        }
-
-        Spacer(Modifier.height(32.dp))
-
-        Button(
-            onClick = {
-                if (baseUrl.isBlank() || invoiceKey.isBlank() || adminKey.isBlank()) {
-                    error = strings.onboardingFieldsRequired                   // ← "All fields are required."
-                    return@Button
-                }
-                scope.launch {
-                    secretStore.saveCredentials(baseUrl, invoiceKey, adminKey)
-                    onComplete()
-                }
-            },
-            modifier = Modifier.fillMaxWidth()
-        ) {
-            Text(strings.onboardingConnect)                                    // ← "Connect"
-        }
-    }
-}

app/src/main/java/com/bitcointxoko/gudariwallet/ui/onboarding/OnboardingComponents.kt

@@ -0,0 +1,92 @@
+package com.bitcointxoko.gudariwallet.ui.onboarding
+
+import androidx.compose.animation.animateColorAsState
+import androidx.compose.foundation.background
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Box
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.ColumnScope
+import androidx.compose.foundation.layout.Row
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.pager.PagerState
+import androidx.compose.foundation.shape.CircleShape
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.draw.clip
+import androidx.compose.ui.unit.dp
+
+// ── Reusable page shell ────────────────────────────────────────────────────────
+@Composable
+internal fun OnboardingPageScaffold(
+    title: String,
+    subtitle: String,
+    content: @Composable ColumnScope.() -> Unit
+) {
+    Column(
+        modifier            = Modifier
+            .fillMaxSize()
+            .padding(32.dp),
+        verticalArrangement = Arrangement.Center,
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        Text(text = title, style = MaterialTheme.typography.headlineSmall)
+        Spacer(Modifier.height(8.dp))
+        Text(
+            text  = subtitle,
+            style = MaterialTheme.typography.bodyMedium,
+            color = MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        Spacer(Modifier.height(32.dp))
+        content()
+    }
+}
+
+// ── Inline error text ──────────────────────────────────────────────────────────
+@Composable
+internal fun ErrorText(error: String?) {
+    if (error != null) {
+        Spacer(Modifier.height(8.dp))
+        Text(
+            text  = error,
+            color = MaterialTheme.colorScheme.error,
+            style = MaterialTheme.typography.bodySmall
+        )
+    }
+}
+
+// ── Dot indicator ──────────────────────────────────────────────────────────────
+@Composable
+internal fun PagerDotIndicator(
+    pagerState: PagerState,
+    modifier: Modifier = Modifier
+) {
+    Row(
+        modifier            = modifier,
+        horizontalArrangement = Arrangement.spacedBy(8.dp),
+        verticalAlignment   = Alignment.CenterVertically
+    ) {
+        repeat(pagerState.pageCount) { index ->
+            val isSelected = pagerState.currentPage == index
+            val color by animateColorAsState(
+                targetValue = if (isSelected) MaterialTheme.colorScheme.primary
+                else MaterialTheme.colorScheme.onSurface.copy(alpha = 0.3f),
+                label       = "dotColor"
+            )
+            val size = if (isSelected) 10.dp else 8.dp
+            Box(
+                modifier = Modifier
+                    .size(size)
+                    .clip(CircleShape)
+                    .background(color)
+            )
+        }
+    }
+}

app/src/main/java/com/bitcointxoko/gudariwallet/ui/onboarding/OnboardingPages.kt

@@ -0,0 +1,275 @@
+package com.bitcointxoko.gudariwallet.ui.onboarding
+
+import android.content.ActivityNotFoundException
+import android.content.Context
+import android.content.Intent
+import android.os.Build
+import android.os.PowerManager
+import android.provider.Settings
+import androidx.compose.foundation.layout.Arrangement
+import androidx.compose.foundation.layout.Column
+import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
+import androidx.compose.foundation.layout.height
+import androidx.compose.foundation.layout.padding
+import androidx.compose.foundation.layout.size
+import androidx.compose.foundation.text.KeyboardOptions
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.filled.BatteryFull
+import androidx.compose.material.icons.filled.Notifications
+import androidx.compose.material.icons.filled.Visibility
+import androidx.compose.material.icons.filled.VisibilityOff
+import androidx.compose.material3.Button
+import androidx.compose.material3.Icon
+import androidx.compose.material3.IconButton
+import androidx.compose.material3.MaterialTheme
+import androidx.compose.material3.OutlinedTextField
+import androidx.compose.material3.Text
+import androidx.compose.runtime.Composable
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.platform.LocalContext
+import androidx.compose.ui.text.input.KeyboardType
+import androidx.compose.ui.text.input.PasswordVisualTransformation
+import androidx.compose.ui.text.input.VisualTransformation
+import androidx.compose.ui.text.style.TextAlign
+import androidx.compose.ui.unit.dp
+import androidx.core.net.toUri
+import com.bitcointxoko.gudariwallet.i18n.AppStrings
+
+// ── Page 0: Welcome ────────────────────────────────────────────────────────────
+@Composable
+internal fun WelcomePage(strings: AppStrings) {
+    Column(
+        modifier            = Modifier
+            .fillMaxSize()
+            .padding(32.dp),
+        verticalArrangement = Arrangement.Center,
+        horizontalAlignment = Alignment.CenterHorizontally
+    ) {
+        // Replace with your actual illustration / logo
+        Text(text = "⚡", style = MaterialTheme.typography.displayLarge)
+        Spacer(Modifier.height(24.dp))
+        Text(
+            text      = strings.onboarding.title,       // ← "Connect to LNbits"
+            style     = MaterialTheme.typography.headlineMedium,
+            textAlign = TextAlign.Center
+        )
+        Spacer(Modifier.height(8.dp))
+        Text(
+            text      = strings.onboarding.subtitle,    // ← "Enter your LNbits server URL and API keys."
+            style     = MaterialTheme.typography.bodyMedium,
+            color     = MaterialTheme.colorScheme.onSurfaceVariant,
+            textAlign = TextAlign.Center
+        )
+    }
+}
+
+// ── Page 1: Server URL ─────────────────────────────────────────────────────────
+@Composable
+internal fun ServerUrlPage(
+    strings: AppStrings,
+    baseUrl: String,
+    onBaseUrl: (String) -> Unit,
+    error: String?
+) {
+    OnboardingPageScaffold(
+        title    = strings.onboarding.serverUrl,        // ← "Server URL"
+        subtitle = strings.onboarding.serverUrlHint     // ← "https://bitcointxoko.org"
+    ) {
+        OutlinedTextField(
+            value           = baseUrl,
+            onValueChange   = onBaseUrl,
+            label           = { Text(strings.onboarding.serverUrl) },
+            placeholder     = { Text(strings.onboarding.serverUrlHint) },
+            singleLine      = true,
+            modifier        = Modifier.fillMaxWidth(),
+            keyboardOptions = KeyboardOptions(keyboardType = KeyboardType.Uri),
+            isError         = error != null
+        )
+        ErrorText(error)
+    }
+}
+
+// ── Page 2: Invoice Key ────────────────────────────────────────────────────────
+@Composable
+internal fun InvoiceKeyPage(
+    strings: AppStrings,
+    invoiceKey: String,
+    onInvoiceKey: (String) -> Unit,
+    error: String?
+) {
+    OnboardingPageScaffold(
+        title    = strings.onboarding.invoiceKey,       // ← "Invoice Key (read-only)"
+        subtitle = "Used to generate payment requests."
+    ) {
+        OutlinedTextField(
+            value                = invoiceKey,
+            onValueChange        = onInvoiceKey,
+            label                = { Text(strings.onboarding.invoiceKey) },
+            singleLine           = true,
+            modifier             = Modifier.fillMaxWidth(),
+            keyboardOptions      = KeyboardOptions(keyboardType = KeyboardType.Password),
+            visualTransformation = PasswordVisualTransformation(),
+            isError              = error != null
+        )
+        ErrorText(error)
+    }
+}
+
+// ── Page 3: Admin Key ──────────────────────────────────────────────────────────
+@Composable
+internal fun AdminKeyPage(
+    strings: AppStrings,
+    adminKey: String,
+    onAdminKey: (String) -> Unit,
+    adminVisible: Boolean,
+    onToggleVis: () -> Unit,
+    error: String?
+) {
+    OnboardingPageScaffold(
+        title    = strings.onboarding.adminKey,         // ← "Admin Key (for sending)"
+        subtitle = "Required to send payments."
+    ) {
+        OutlinedTextField(
+            value                = adminKey,
+            onValueChange        = onAdminKey,
+            label                = { Text(strings.onboarding.adminKey) },
+            singleLine           = true,
+            modifier             = Modifier.fillMaxWidth(),
+            keyboardOptions      = KeyboardOptions(keyboardType = KeyboardType.Password),
+            visualTransformation = if (adminVisible) VisualTransformation.None
+            else PasswordVisualTransformation(),
+            isError              = error != null,
+            trailingIcon         = {
+                IconButton(onClick = onToggleVis) {
+                    Icon(
+                        imageVector        = if (adminVisible) Icons.Default.VisibilityOff
+                        else Icons.Default.Visibility,
+                        contentDescription = if (adminVisible) strings.onboarding.hideAdminKey
+                        else strings.onboarding.showAdminKey
+                    )
+                }
+            }
+        )
+        ErrorText(error)
+    }
+}
+
+// ── Page 4: Notifications ──────────────────────────────────────────────────────
+@Composable
+fun NotificationsPage(
+    strings: AppStrings,
+    onRequestNotificationPermission: () -> Unit
+) {
+    // On API < 33, the permission doesn't exist — show a reduced UI
+    val needsPermission = Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU
+
+    OnboardingPageScaffold(
+        title    = strings.onboarding.notificationsTitle,    // ← "Stay in the loop"
+        subtitle = strings.onboarding.notificationsSubtitle  // ← "Get notified instantly when you receive a payment."
+    ) {
+        Icon(
+            imageVector        = Icons.Default.Notifications,
+            contentDescription = null,
+            modifier           = Modifier.size(72.dp),
+            tint               = MaterialTheme.colorScheme.primary
+        )
+        Spacer(Modifier.height(32.dp))
+
+        if (needsPermission) {
+            Button(
+                onClick  = onRequestNotificationPermission,
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text(strings.onboarding.allowNotifications) // ← "Allow Notifications"
+            }
+            Spacer(Modifier.height(8.dp))
+            Text(
+                text  = strings.onboarding.notificationsNote,
+                // ← "You can change this later in system Settings."
+                style = MaterialTheme.typography.bodySmall,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                textAlign = TextAlign.Center
+            )
+        } else {
+            // API < 33: permission granted implicitly, nothing to request
+            Text(
+                text  = strings.onboarding.notificationsAutoGranted,
+                // ← "Notifications are enabled automatically on your device."
+                style = MaterialTheme.typography.bodyMedium,
+                color = MaterialTheme.colorScheme.onSurfaceVariant,
+                textAlign = TextAlign.Center
+            )
+        }
+    }
+}
+
+// ── Page 5: Battery optimisation ──────────────────────────────────────────────
+@Composable
+fun BatteryPage(strings: AppStrings) {
+    val context = LocalContext.current
+    val pm      = context.getSystemService(Context.POWER_SERVICE) as PowerManager
+    val alreadyUnrestricted = pm.isIgnoringBatteryOptimizations(context.packageName)
+
+    OnboardingPageScaffold(
+        title    = strings.onboarding.batteryTitle,    // ← "Background activity"
+        subtitle = strings.onboarding.batterySubtitle  // ← "Allow Gudari Wallet to run unrestricted so notifications arrive even when the app is closed."
+    ) {
+        Icon(
+            imageVector        = Icons.Default.BatteryFull,
+            contentDescription = null,
+            modifier           = Modifier.size(72.dp),
+            tint               = if (alreadyUnrestricted)
+                MaterialTheme.colorScheme.primary
+            else
+                MaterialTheme.colorScheme.onSurfaceVariant
+        )
+        Spacer(Modifier.height(32.dp))
+
+        if (alreadyUnrestricted) {
+            Text(
+                text      = strings.onboarding.batteryAlreadyUnrestricted,
+                // ← "You're all set — no restrictions detected."
+                style     = MaterialTheme.typography.bodyMedium,
+                color     = MaterialTheme.colorScheme.primary,
+                textAlign = TextAlign.Center
+            )
+        } else {
+            Button(
+                onClick  = { openBatterySettings(context) },
+                modifier = Modifier.fillMaxWidth()
+            ) {
+                Text(strings.onboarding.openSettings) // ← "Open Settings"
+            }
+            Spacer(Modifier.height(8.dp))
+            Text(
+                text      = strings.onboarding.batteryNote,
+                // ← "Tap 'Battery' → 'Unrestricted'. You can skip this and change it later."
+                style     = MaterialTheme.typography.bodySmall,
+                color     = MaterialTheme.colorScheme.onSurfaceVariant,
+                textAlign = TextAlign.Center
+            )
+        }
+    }
+}
+
+// ── Battery settings helper (moved from MainActivity) ─────────────────────────
+private fun openBatterySettings(context: Context) {
+    val appDetailsIntent = Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS).apply {
+        data  = "package:${context.packageName}".toUri()
+        flags = Intent.FLAG_ACTIVITY_NEW_TASK
+    }
+    try {
+        context.startActivity(appDetailsIntent)
+    } catch (_: ActivityNotFoundException) {
+        try {
+            context.startActivity(
+                Intent(Settings.ACTION_IGNORE_BATTERY_OPTIMIZATION_SETTINGS).apply {
+                    flags = Intent.FLAG_ACTIVITY_NEW_TASK
+                }
+            )
+        } catch (_: ActivityNotFoundException) { /* nothing to do */ }
+    }
+}

app/src/main/java/com/bitcointxoko/gudariwallet/ui/onboarding/OnboardingScreen.kt

@@ -0,0 +1,157 @@
+package com.bitcointxoko.gudariwallet.ui.onboarding
+
+import androidx.compose.foundation.layout.*
+import androidx.compose.foundation.pager.HorizontalPager
+import androidx.compose.foundation.pager.rememberPagerState
+import androidx.compose.material.icons.Icons
+import androidx.compose.material.icons.automirrored.filled.ArrowBack
+import androidx.compose.material.icons.automirrored.filled.ArrowForward
+import androidx.compose.material3.*
+import androidx.compose.runtime.*
+import androidx.compose.ui.Alignment
+import androidx.compose.ui.Modifier
+import androidx.compose.ui.unit.dp
+import com.bitcointxoko.gudariwallet.LocalAppStrings
+import com.bitcointxoko.gudariwallet.security.SecretStore
+import kotlinx.coroutines.launch
+
+private const val PAGE_WELCOME       = 0
+private const val PAGE_SERVER_URL    = 1
+private const val PAGE_INVOICE       = 2
+private const val PAGE_ADMIN         = 3
+private const val PAGE_NOTIFICATIONS = 4
+private const val PAGE_BATTERY       = 5
+private const val PAGE_COUNT         = 6
+
+
+@Composable
+fun OnboardingScreen(
+    secretStore: SecretStore,
+    onRequestNotificationPermission: () -> Unit,   // ← new parameter
+    onComplete: () -> Unit
+) {
+    val strings = LocalAppStrings.current
+    val scope   = rememberCoroutineScope()
+
+    var baseUrl      by remember { mutableStateOf("https://bitcointxoko.org") }
+    var invoiceKey   by remember { mutableStateOf("") }
+    var adminKey     by remember { mutableStateOf("") }
+    var adminVisible by remember { mutableStateOf(false) }
+    var error        by remember { mutableStateOf<String?>(null) }
+
+    // Track whether credentials have been saved (so we don't save twice on back/forward)
+    var credentialsSaved by remember { mutableStateOf(false) }
+
+    val pagerState = rememberPagerState(pageCount = { PAGE_COUNT })
+
+    LaunchedEffect(pagerState.currentPage) { error = null }
+
+    fun validateCurrentPage(): Boolean {
+        error = when (pagerState.currentPage) {
+            PAGE_SERVER_URL -> if (baseUrl.isBlank()) strings.onboarding.fieldsRequired else null
+            PAGE_INVOICE    -> if (invoiceKey.isBlank()) strings.onboarding.fieldsRequired else null
+            PAGE_ADMIN      -> if (adminKey.isBlank()) strings.onboarding.fieldsRequired else null
+            else            -> null   // PAGE_NOTIFICATIONS and PAGE_BATTERY always pass
+        }
+        return error == null
+    }
+
+    Scaffold { innerPadding ->
+        Column(
+            modifier = Modifier
+                .fillMaxSize()
+                .padding(innerPadding)
+        ) {
+            HorizontalPager(
+                state    = pagerState,
+                modifier = Modifier.weight(1f),
+                // Prevent swiping back past the admin page once credentials are saved,
+                // and prevent skipping the permission pages entirely
+                userScrollEnabled = true
+            ) { page ->
+                when (page) {
+                    PAGE_WELCOME       -> WelcomePage(strings)
+                    PAGE_SERVER_URL    -> ServerUrlPage(strings, baseUrl, { baseUrl = it }, error)
+                    PAGE_INVOICE       -> InvoiceKeyPage(strings, invoiceKey, { invoiceKey = it }, error)
+                    PAGE_ADMIN         -> AdminKeyPage(
+                        strings      = strings,
+                        adminKey     = adminKey,
+                        onAdminKey   = { adminKey = it },
+                        adminVisible = adminVisible,
+                        onToggleVis  = { adminVisible = !adminVisible },
+                        error        = error
+                    )
+                    PAGE_NOTIFICATIONS -> NotificationsPage(
+                        strings                          = strings,
+                        onRequestNotificationPermission  = onRequestNotificationPermission
+                    )
+                    PAGE_BATTERY       -> BatteryPage(strings)
+                }
+            }
+
+            PagerDotIndicator(
+                pagerState = pagerState,
+                modifier   = Modifier
+                    .align(Alignment.CenterHorizontally)
+                    .padding(vertical = 12.dp)
+            )
+
+            Row(
+                modifier              = Modifier
+                    .fillMaxWidth()
+                    .padding(horizontal = 24.dp, vertical = 16.dp),
+                horizontalArrangement = Arrangement.SpaceBetween,
+                verticalAlignment     = Alignment.CenterVertically
+            ) {
+                if (pagerState.currentPage > PAGE_WELCOME) {
+                    OutlinedButton(onClick = {
+                        scope.launch {
+                            pagerState.animateScrollToPage(pagerState.currentPage - 1)
+                        }
+                    }) {
+                        Icon(Icons.AutoMirrored.Filled.ArrowBack, contentDescription = null)
+                        Spacer(Modifier.width(4.dp))
+                        Text(strings.onboarding.back)
+                    }
+                } else {
+                    Spacer(Modifier.width(1.dp))
+                }
+
+                val isLastPage = pagerState.currentPage == PAGE_BATTERY
+
+                Button(onClick = {
+                    if (!validateCurrentPage()) return@Button
+
+                    when (pagerState.currentPage) {
+                        PAGE_ADMIN -> {
+                            if (!credentialsSaved) {
+                                scope.launch {
+                                    secretStore.saveCredentials(baseUrl, invoiceKey, adminKey)
+                                    credentialsSaved = true
+                                    pagerState.animateScrollToPage(PAGE_NOTIFICATIONS)
+                                }
+                            } else {
+                                scope.launch { pagerState.animateScrollToPage(PAGE_NOTIFICATIONS) }
+                            }
+                        }
+                        PAGE_BATTERY -> {
+                            scope.launch {
+                                secretStore.setOnboarded()
+                            }
+                        }
+                        else -> scope.launch {
+                            pagerState.animateScrollToPage(pagerState.currentPage + 1)
+                        }
+                    }
+                }) {
+                    Text(if (isLastPage) strings.onboarding.done else strings.onboarding.next)
+                    if (!isLastPage) {
+                        Spacer(Modifier.width(4.dp))
+                        Icon(Icons.AutoMirrored.Filled.ArrowForward, contentDescription = null)
+                    }
+                }
+            }
+        }
+    }
+}
+

app/src/main/java/com/bitcointxoko/gudariwallet/ui/onboarding/OnboardingViewModel.kt

@@ -0,0 +1,24 @@
+package com.bitcointxoko.gudariwallet.ui.onboarding
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+import androidx.lifecycle.viewModelScope
+import com.bitcointxoko.gudariwallet.security.SecretStore
+import kotlinx.coroutines.launch
+
+class OnboardingViewModel(private val secretStore: SecretStore) : ViewModel() {
+    var baseUrl    by mutableStateOf("https://bitcointxoko.org")
+    var invoiceKey by mutableStateOf("")
+    var adminKey   by mutableStateOf("")
+    var adminKeyVisible by mutableStateOf(false)
+    var error      by mutableStateOf<String?>(null)
+
+    fun saveAndComplete(onComplete: () -> Unit) {
+        viewModelScope.launch {
+            secretStore.saveCredentials(baseUrl, invoiceKey, adminKey)
+            onComplete()
+        }
+    }
+}

gradle/libs.versions.toml

@@ -28,6 +28,7 @@ tink             = "1.13.0"
 ui = "1.11.2"
 secp256k1-kmp = "0.23.0"
 lyricist = "1.8.0"
+material3 = "1.4.0"
 
 [libraries]
 androidx-biometric = { module = "androidx.biometric:biometric", version.ref = "biometric" }
@@ -71,6 +72,7 @@ androidx-ui = { group = "androidx.compose.ui", name = "ui", version.ref = "ui" }
 secp256k1-kmp-android = { group = "fr.acinq.secp256k1", name = "secp256k1-kmp-jni-android", version.ref = "secp256k1-kmp" }
 lyricist = { module = "cafe.adriel.lyricist:lyricist", version.ref = "lyricist" }
 lyricist-processor = { module = "cafe.adriel.lyricist:lyricist-processor", version.ref = "lyricist" }
+androidx-material3 = { group = "androidx.compose.material3", name = "material3", version.ref = "material3" }
 
 [plugins]
 android-application = { id = "com.android.application", version.ref = "agp" }