diff --git a/app/src/main/java/com/ray650128/floatingwindow/ui/MainActivity.kt b/app/src/main/java/com/ray650128/floatingwindow/ui/MainActivity.kt
index ad22bc9..01dc31a 100644
--- a/app/src/main/java/com/ray650128/floatingwindow/ui/MainActivity.kt
+++ b/app/src/main/java/com/ray650128/floatingwindow/ui/MainActivity.kt
@@ -7,6 +7,7 @@ import android.net.Uri
 import androidx.appcompat.app.AppCompatActivity
 import android.os.Bundle
 import android.provider.Settings
+import android.view.View
 import androidx.activity.result.contract.ActivityResultContracts
 import com.ray650128.floatingwindow.utils.FloatingWindowHelperUtils
 import com.ray650128.floatingwindow.databinding.ActivityMainBinding
@@ -34,6 +35,7 @@ class MainActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_FULLSCREEN
         binding = ActivityMainBinding.inflate(layoutInflater)
         setContentView(binding.root)
 
diff --git a/app/src/main/java/com/ray650128/floatingwindow/ui/SettingActivity.kt b/app/src/main/java/com/ray650128/floatingwindow/ui/SettingActivity.kt
index 3874130..9690a21 100644
--- a/app/src/main/java/com/ray650128/floatingwindow/ui/SettingActivity.kt
+++ b/app/src/main/java/com/ray650128/floatingwindow/ui/SettingActivity.kt
@@ -64,6 +64,7 @@ class SettingActivity : AppCompatActivity() {
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
+        window.decorView.systemUiVisibility = View.SYSTEM_UI_FLAG_FULLSCREEN
         binding = ActivitySettingBinding.inflate(layoutInflater)
         setContentView(binding.root)