Fixed keep screen on.

Tested on Android 14 (LineagoOS 21)

app/build.gradle.kts

@@ -23,6 +23,7 @@ android {
                 getDefaultProguardFile("proguard-android-optimize.txt"),
                 "proguard-rules.pro"
             )
+            signingConfig = signingConfigs.getByName("debug")
         }
     }
     compileOptions {

app/src/main/java/com/gitea/kashamannaya/lilula/MainActivity.java

@@ -13,6 +13,7 @@ import android.os.Build;
 import android.os.Bundle;
 import android.os.Environment;
 import android.os.Handler;
+import android.os.PowerManager;
 import android.util.Log;
 import android.view.Surface;
 import android.view.SurfaceHolder;
@@ -100,6 +101,11 @@ public class MainActivity extends AppCompatActivity implements SurfaceHolder.Cal
 
     private void keepScreenOn() {
         getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
+        PowerManager powerManager = (PowerManager) getSystemService(POWER_SERVICE);
+        PowerManager.WakeLock wakeLock = powerManager.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK,
+                "com.gitea.kashamannaya.lilula::LilulaWakelockTag");
+        wakeLock.acquire();
+
     }
 
     private void updateToggleButtonText() {

app/src/main/res/layout/activity_main.xml

@@ -1,7 +1,8 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:keepScreenOn="true">
 
     <SurfaceView
         android:id="@+id/surface_view"