From 70aa1ac5c682dc345106efe39ad781ae2452a2b3 Mon Sep 17 00:00:00 2001
From: Andre Rosado <arosado@bitwarden.com>
Date: Fri, 16 Jan 2026 13:56:22 +0000
Subject: [PATCH] Set landscape orientation for HorizonOS devices

---
 .../kotlin/com/x8bit/bitwarden/MainActivity.kt     |  8 ++++++++
 .../com/bitwarden/core/util/AndroidPropUtils.kt    | 14 ++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/app/src/main/kotlin/com/x8bit/bitwarden/MainActivity.kt b/app/src/main/kotlin/com/x8bit/bitwarden/MainActivity.kt
index 512e9f3ddf..bb5e274c3e 100644
--- a/app/src/main/kotlin/com/x8bit/bitwarden/MainActivity.kt
+++ b/app/src/main/kotlin/com/x8bit/bitwarden/MainActivity.kt
@@ -2,6 +2,7 @@ package com.x8bit.bitwarden
 
 import android.app.ComponentCaller
 import android.content.Intent
+import android.content.pm.ActivityInfo
 import android.os.Build
 import android.os.Bundle
 import android.view.KeyEvent
@@ -22,6 +23,7 @@ import androidx.lifecycle.compose.collectAsStateWithLifecycle
 import androidx.navigation.NavController
 import androidx.navigation.compose.NavHost
 import com.bitwarden.annotation.OmitFromCoverage
+import com.bitwarden.core.util.isHorizonOS
 import com.bitwarden.ui.platform.base.util.EventsEffect
 import com.bitwarden.ui.platform.theme.BitwardenTheme
 import com.bitwarden.ui.platform.util.setupEdgeToEdge
@@ -85,6 +87,12 @@ class MainActivity : AppCompatActivity() {
         var shouldShowSplashScreen = true
         installSplashScreen().setKeepOnScreenCondition { shouldShowSplashScreen }
         super.onCreate(savedInstanceState)
+
+        // Set landscape orientation for Horizon OS devices
+        if (isHorizonOS()) {
+            requestedOrientation = ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE
+        }
+
         window.decorView.filterTouchesWhenObscured = true
         if (savedInstanceState == null) {
             mainViewModel.trySendAction(MainAction.ReceiveFirstIntent(intent = intent))
diff --git a/core/src/main/kotlin/com/bitwarden/core/util/AndroidPropUtils.kt b/core/src/main/kotlin/com/bitwarden/core/util/AndroidPropUtils.kt
index ee742132a9..97c36e958e 100644
--- a/core/src/main/kotlin/com/bitwarden/core/util/AndroidPropUtils.kt
+++ b/core/src/main/kotlin/com/bitwarden/core/util/AndroidPropUtils.kt
@@ -5,12 +5,26 @@ package com.bitwarden.core.util
 import com.bitwarden.annotation.OmitFromCoverage
 
 private const val KEY_XIAOMI_HYPER_OS_NAME = "ro.mi.os.version.name"
+private const val HORIZON_OS_SDK = "horizonos.os.Build\$HorizonOsSdk"
 
 /**
  * Returns true if the device is running Xiaomi HyperOS.
  */
 fun isHyperOS(): Boolean = !getSystemProperty(KEY_XIAOMI_HYPER_OS_NAME).isNullOrEmpty()
 
+/**
+ * Returns true if the device is running Horizon OS.
+ */
+fun isHorizonOS(): Boolean {
+    return try {
+        val horizonOsSdk = Class.forName(HORIZON_OS_SDK)
+        val getVersionMethod = horizonOsSdk.getMethod("getVersion")
+        getVersionMethod.invoke(null) != null
+    } catch (_: Throwable) {
+        false
+    }
+}
+
 /**
  * Reads an Android system property using the android.os.SystemProperties API
  *