[PM-28834] bug: Setting configuration for VR devices on MainActivity (#6563)

app/src/main/kotlin/com/x8bit/bitwarden/MainActivity.kt

@@ -26,6 +26,7 @@ import androidx.navigation.compose.NavHost
 import com.bitwarden.annotation.OmitFromCoverage
 import com.bitwarden.ui.platform.base.util.EventsEffect
 import com.bitwarden.ui.platform.theme.BitwardenTheme
+import com.bitwarden.ui.platform.util.setHorizonOSAppLayout
 import com.bitwarden.ui.platform.util.setupEdgeToEdge
 import com.bitwarden.ui.platform.util.validate
 import com.x8bit.bitwarden.data.autofill.accessibility.manager.AccessibilityCompletionManager
@@ -212,6 +213,16 @@ class MainActivity : AppCompatActivity() {
         .takeIf { it }
         ?: super.dispatchKeyEvent(event)
 
+    override fun onPostCreate(savedInstanceState: Bundle?) {
+        super.onPostCreate(savedInstanceState)
+        // resize only one time at the start
+        if (!mainViewModel.stateFlow.value.hasResizeBeenRequested) {
+            setHorizonOSAppLayout {
+                mainViewModel.trySendAction(MainAction.Internal.ResizeHasBeenRequested)
+            }
+        }
+    }
+
     @Composable
     private fun SetupEventsEffect(navController: NavController) {
         EventsEffect(viewModel = mainViewModel) { event ->

app/src/main/kotlin/com/x8bit/bitwarden/MainViewModel.kt

@@ -98,6 +98,7 @@ class MainViewModel @Inject constructor(
         theme = settingsRepository.appTheme,
         isScreenCaptureAllowed = settingsRepository.isScreenCaptureAllowed,
         isDynamicColorsEnabled = settingsRepository.isDynamicColorsEnabled,
+        hasResizeBeenRequested = false,
     ),
 ) {
     private var specialCircumstance: SpecialCircumstance?
@@ -222,6 +223,7 @@ class MainViewModel @Inject constructor(
             is MainAction.Internal.ThemeUpdate -> handleAppThemeUpdated(action)
             is MainAction.Internal.DynamicColorsUpdate -> handleDynamicColorsUpdate(action)
             is MainAction.Internal.CookieAcquisitionReady -> handleCookieAcquisitionReady()
+            is MainAction.Internal.ResizeHasBeenRequested -> handleResizeHasBeenRequested()
         }
     }
 
@@ -302,6 +304,10 @@ class MainViewModel @Inject constructor(
         sendEvent(MainEvent.NavigateToCookieAcquisition)
     }
 
+    private fun handleResizeHasBeenRequested() {
+        mutableStateFlow.update { it.copy(hasResizeBeenRequested = true) }
+    }
+
     private fun handleFirstIntentReceived(action: MainAction.ReceiveFirstIntent) {
         handleIntent(
             intent = action.intent,
@@ -531,6 +537,7 @@ data class MainState(
     val theme: AppTheme,
     val isScreenCaptureAllowed: Boolean,
     val isDynamicColorsEnabled: Boolean,
+    val hasResizeBeenRequested: Boolean,
 ) : Parcelable {
     /**
      * Contains all feature flags that are available to the UI.
@@ -648,6 +655,11 @@ sealed class MainAction {
          * should proceed.
          */
         data object CookieAcquisitionReady : Internal()
+
+        /**
+         * Indicates that resize has been requested on the Activity
+         */
+        data object ResizeHasBeenRequested : Internal()
     }
 }
 

app/src/test/kotlin/com/x8bit/bitwarden/MainViewModelTest.kt

@@ -1325,6 +1325,30 @@ class MainViewModelTest : BaseViewModelTest() {
             }
         }
 
+    @Test
+    fun `on handleResizeHasBeenRequested should set hasResizeBeenRequested as true`() = runTest {
+        val viewModel = createViewModel()
+        val initialState = MainState(
+            theme = settingsRepository.appTheme,
+            isScreenCaptureAllowed = settingsRepository.isScreenCaptureAllowed,
+            isDynamicColorsEnabled = settingsRepository.isDynamicColorsEnabled,
+            hasResizeBeenRequested = false,
+        )
+        viewModel.stateFlow.test {
+            assertEquals(
+                initialState,
+                awaitItem(),
+            )
+            viewModel.trySendAction(MainAction.Internal.ResizeHasBeenRequested)
+            assertEquals(
+                initialState.copy(
+                    hasResizeBeenRequested = true,
+                ),
+                awaitItem(),
+            )
+        }
+    }
+
     private fun createViewModel(
         initialSpecialCircumstance: SpecialCircumstance? = null,
     ) = MainViewModel(
@@ -1353,6 +1377,7 @@ private val DEFAULT_STATE: MainState = MainState(
     theme = AppTheme.DEFAULT,
     isScreenCaptureAllowed = true,
     isDynamicColorsEnabled = false,
+    hasResizeBeenRequested = false,
 )
 
 private val DEFAULT_FIRST_TIME_STATE = FirstTimeState(

ui/src/main/kotlin/com/bitwarden/ui/platform/util/ActivityExtensions.kt

@@ -0,0 +1,40 @@
+@file:OmitFromCoverage
+
+package com.bitwarden.ui.platform.util
+
+import android.app.Activity
+import android.os.Build
+import com.bitwarden.annotation.OmitFromCoverage
+
+/**
+ * Requests a HorizonOS-specific window resize to 1024×640 via reflection.
+ * Calls [onResizeRequested] only if the resize request succeeds.
+ */
+@Suppress("MagicNumber", "TooGenericExceptionCaught")
+fun Activity.setHorizonOSAppLayout(
+    onResizeRequested: () -> Unit,
+) {
+    if (!isHorizonOSDevice()) {
+        return
+    }
+    window.decorView.post {
+        try {
+            val clazz = Class.forName("horizonos.view.WindowExt")
+            val method = clazz.getMethod(
+                "requestWindowResize",
+                android.view.Window::class.java,
+                Int::class.javaPrimitiveType,
+                Int::class.javaPrimitiveType,
+            )
+            method.invoke(null, window, 1024, 640)
+        } catch (t: Throwable) {
+            // Not Horizon OS / API not present / request ignored by system
+            return@post
+        }
+        onResizeRequested()
+    }
+}
+
+private fun isHorizonOSDevice(): Boolean =
+    Build.MANUFACTURER.equals("Oculus", ignoreCase = true) ||
+        Build.MANUFACTURER.equals("Meta", ignoreCase = true)