use old copy code on older versions

app/src/main/java/com/geode/launcher/GeometryDashActivity.kt

@@ -124,12 +124,43 @@ class GeometryDashActivity : AppCompatActivity(), Cocos2dxHelper.Cocos2dxHelperL
     }
 
     private fun loadLibraryFromAssets(libraryName: String) {
+        // for split apks, loads a library stored inside of the apk
+        // maybe todo: is there really no way to load these libraries without weird workarounds?
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) {
+            loadLibraryFromAssetsNative(libraryName)
+        } else {
+            loadLibraryFromAssetsCopy(libraryName)
+        }
+    }
+
+    @SuppressLint("UnsafeDynamicallyLoadedCode")
+    private fun loadLibraryFromAssetsCopy(libraryName: String) {
+        // loads a library loaded in assets
+        // this copies the library to a non-compressed directory
+
+        val arch = LaunchUtils.getApplicationArchitecture()
+        val libraryFd = try {
+            assets.openNonAssetFd("lib/$arch/lib$libraryName.so")
+        } catch (_: Exception) {
+            throw UnsatisfiedLinkError("Could not find library lib$libraryName.so for abi $arch")
+        }
+
+        // copy the library to a path we can access
+        // there doesn't seem to be a way to load a library from a file descriptor
+        val libraryCopy = File(cacheDir, "lib$libraryName.so")
+        val libraryOutput = libraryCopy.outputStream()
+        copyFile(libraryFd.createInputStream(), libraryOutput)
+
+        System.load(libraryCopy.path)
+
+        return
+    }
+
+    private fun loadLibraryFromAssetsNative(libraryName: String) {
         // loads a library loaded in assets (which points to the apk + an offset)
         // these libraries are available to the application after merging
 
-        // find the first instance of the library in preferred abi order
         val arch = LaunchUtils.getApplicationArchitecture()
-
         val libraryFd = try {
             assets.openNonAssetFd("lib/$arch/lib$libraryName.so")
         } catch (_: Exception) {
@@ -144,7 +175,7 @@ class GeometryDashActivity : AppCompatActivity(), Cocos2dxHelper.Cocos2dxHelperL
         }
 
         // after the library is opened in native code, it should be available for loading
-        // you can read more about the behavior:
+        // you can read more about the behavior (added in android 11):
         // https://android.googlesource.com/platform/libcore/+/7f3eb2e0ac87bdea471bc577380cf50025aebde5/ojluni/src/main/java/java/lang/Runtime.java#1060
         System.loadLibrary(libraryName)
     }