fix(android): use Google Code Scanner for onboarding QR

apps/android/app/build.gradle.kts

@@ -194,7 +194,7 @@ dependencies {
     implementation("androidx.camera:camera-lifecycle:1.5.2")
     implementation("androidx.camera:camera-video:1.5.2")
     implementation("androidx.camera:camera-view:1.5.2")
-    implementation("com.journeyapps:zxing-android-embedded:4.3.0")
+    implementation("com.google.android.gms:play-services-code-scanner:16.1.0")
 
     // Unicast DNS-SD (Wide-Area Bonjour) for tailnet discovery domains.
     implementation("dnsjava:dnsjava:3.6.4")

apps/android/app/src/main/java/ai/openclaw/app/ui/OnboardingFlow.kt

@@ -96,8 +96,9 @@ import ai.openclaw.app.LocationMode
 import ai.openclaw.app.MainViewModel
 import ai.openclaw.app.R
 import ai.openclaw.app.node.DeviceNotificationListenerService
-import com.journeyapps.barcodescanner.ScanContract
-import com.journeyapps.barcodescanner.ScanOptions
+import com.google.mlkit.vision.barcode.common.Barcode
+import com.google.mlkit.vision.codescanner.GmsBarcodeScannerOptions
+import com.google.mlkit.vision.codescanner.GmsBarcodeScanning
 
 private enum class OnboardingStep(val index: Int, val label: String) {
   Welcome(1, "Welcome"),
@@ -241,6 +242,13 @@ fun OnboardingFlow(viewModel: MainViewModel, modifier: Modifier = Modifier) {
   var attemptedConnect by rememberSaveable { mutableStateOf(false) }
 
   val lifecycleOwner = LocalLifecycleOwner.current
+  val qrScannerOptions =
+    remember {
+      GmsBarcodeScannerOptions.Builder()
+        .setBarcodeFormats(Barcode.FORMAT_QR_CODE)
+        .build()
+    }
+  val qrScanner = remember(context, qrScannerOptions) { GmsBarcodeScanning.getClient(context, qrScannerOptions) }
 
   val smsAvailable =
     remember(context) {
@@ -460,23 +468,6 @@ fun OnboardingFlow(viewModel: MainViewModel, modifier: Modifier = Modifier) {
     onDispose { lifecycleOwner.lifecycle.removeObserver(observer) }
   }
 
-  val qrScanLauncher =
-    rememberLauncherForActivityResult(ScanContract()) { result ->
-      val contents = result.contents?.trim().orEmpty()
-      if (contents.isEmpty()) {
-        return@rememberLauncherForActivityResult
-      }
-      val scannedSetupCode = resolveScannedSetupCode(contents)
-      if (scannedSetupCode == null) {
-        gatewayError = "QR code did not contain a valid setup code."
-        return@rememberLauncherForActivityResult
-      }
-      setupCode = scannedSetupCode
-      gatewayInputMode = GatewayInputMode.SetupCode
-      gatewayError = null
-      attemptedConnect = false
-    }
-
   if (pendingTrust != null) {
     val prompt = pendingTrust!!
     AlertDialog(
@@ -552,14 +543,28 @@ fun OnboardingFlow(viewModel: MainViewModel, modifier: Modifier = Modifier) {
               gatewayError = gatewayError,
               onScanQrClick = {
                 gatewayError = null
-                qrScanLauncher.launch(
-                  ScanOptions().apply {
-                    setDesiredBarcodeFormats(ScanOptions.QR_CODE)
-                    setPrompt("Scan OpenClaw onboarding QR")
-                    setBeepEnabled(false)
-                    setOrientationLocked(false)
-                  },
-                )
+                qrScanner.startScan()
+                  .addOnSuccessListener { barcode ->
+                    val contents = barcode.rawValue?.trim().orEmpty()
+                    if (contents.isEmpty()) {
+                      return@addOnSuccessListener
+                    }
+                    val scannedSetupCode = resolveScannedSetupCode(contents)
+                    if (scannedSetupCode == null) {
+                      gatewayError = "QR code did not contain a valid setup code."
+                      return@addOnSuccessListener
+                    }
+                    setupCode = scannedSetupCode
+                    gatewayInputMode = GatewayInputMode.SetupCode
+                    gatewayError = null
+                    attemptedConnect = false
+                  }
+                  .addOnCanceledListener {
+                    // User dismissed the scanner; preserve current form state.
+                  }
+                  .addOnFailureListener { error ->
+                    gatewayError = resolveQrScannerError(error)
+                  }
               },
               onAdvancedOpenChange = { gatewayAdvancedOpen = it },
               onInputModeChange = {
@@ -1785,6 +1790,12 @@ private fun isPermissionGranted(context: Context, permission: String): Boolean {
   return ContextCompat.checkSelfPermission(context, permission) == PackageManager.PERMISSION_GRANTED
 }
 
+private fun resolveQrScannerError(error: Exception): String {
+  val detail = error.message?.trim().orEmpty()
+  val prefix = "Google Code Scanner could not start. Update Google Play services or use the setup code manually."
+  return if (detail.isEmpty()) prefix else "$prefix ($detail)"
+}
+
 private fun isNotificationListenerEnabled(context: Context): Boolean {
   return DeviceNotificationListenerService.isAccessEnabled(context)
 }