diff --git a/app/src/main/java/io/legado/app/base/BaseActivity.kt b/app/src/main/java/io/legado/app/base/BaseActivity.kt
index 9da102b48..d156c294a 100644
--- a/app/src/main/java/io/legado/app/base/BaseActivity.kt
+++ b/app/src/main/java/io/legado/app/base/BaseActivity.kt
@@ -8,7 +8,6 @@ import android.util.AttributeSet
 import android.view.Menu
 import android.view.MenuItem
 import android.view.View
-import android.view.WindowManager
 import android.widget.FrameLayout
 import androidx.appcompat.app.AppCompatActivity
 import io.legado.app.R
@@ -142,13 +141,7 @@ abstract class BaseActivity(
 
     private fun setupSystemBar() {
         if (fullScreen && !isInMultiWindow) {
-            window.clearFlags(
-                WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
-                        or WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION
-            )
-            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
-            window.decorView.systemUiVisibility =
-                View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+            ATH.fullScreen(this)
         }
         ATH.setStatusBarColorAuto(this, fullScreen)
         if (toolBarTheme == Theme.Dark) {
diff --git a/app/src/main/java/io/legado/app/lib/theme/ATH.kt b/app/src/main/java/io/legado/app/lib/theme/ATH.kt
index cb8962c62..73b30ff72 100644
--- a/app/src/main/java/io/legado/app/lib/theme/ATH.kt
+++ b/app/src/main/java/io/legado/app/lib/theme/ATH.kt
@@ -10,6 +10,7 @@ import android.os.Build
 import android.view.View
 import android.view.View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR
 import android.view.WindowInsetsController
+import android.view.WindowManager
 import android.widget.EdgeEffect
 import android.widget.ScrollView
 import androidx.annotation.ColorInt
@@ -41,6 +42,25 @@ object ATH {
         ) > since
     }
 
+    fun fullScreen(activity: Activity) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            activity.window.setDecorFitsSystemWindows(true)
+        } else {
+            fullScreenO(activity)
+        }
+        activity.window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS)
+    }
+
+    @Suppress("DEPRECATION")
+    private fun fullScreenO(activity: Activity) {
+        activity.window.decorView.systemUiVisibility =
+            View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN or View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+        activity.window.clearFlags(
+            WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS
+                    or WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION
+        )
+    }
+
     fun setStatusBarColorAuto(activity: Activity, fullScreen: Boolean) {
         val isTransparentStatusBar = AppConfig.isTransparentStatusBar
         val statusBarColor = ThemeStore.statusBarColor(activity, isTransparentStatusBar)