Added extension function to copy all files to SD card.

Ganary/extensions/_olympus_extension/AndroidSource/Java/Olympus.java

@@ -14,6 +14,18 @@
 import java.io.OutputStream;
 import java.io.IOException;
 
+import android.os.Environment;
+import java.io.File;
+
+import java.nio.file.StandardCopyOption.*;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardCopyOption;
+import java.util.stream.Stream;
+import static java.nio.file.StandardCopyOption.REPLACE_EXISTING;
+
+
+
 public class Olympus extends RunnerSocial {
   public static Activity activity = null;
   public static Intent launchIntent = null;
@@ -71,4 +83,54 @@ public void _olympus_android_write_custom_output(String data) {
           }
       }
   }
+
+    private  void copyFolder(Path src, Path dest) throws IOException {
+        try (Stream<Path> stream = Files.walk(src)) {
+            stream.forEach(source -> copy(source, dest.resolve(src.relativize(source))));
+        }
+    }
+
+    private void copy(Path source, Path dest) {
+        try {
+            Files.copy(source, dest, REPLACE_EXISTING);
+        } catch (Exception e) {
+            throw new RuntimeException(e.getMessage(), e);
+        }
+    }
+
+    // Function to copy all files from internal storage to SD card
+    public void _olympus_android_copy_files_to_SD_card() {
+        File sourceDir = activity.getFilesDir(); // Get internal files directory
+        Log.i("yoyo", "Source directory: " + sourceDir);
+        String externalStorageState = Environment.getExternalStorageState();
+        if (!externalStorageState.equals(Environment.MEDIA_MOUNTED)) {
+            Log.e("yoyo", "External storage not mounted");
+            return;
+        }
+        else{
+            Log.i("yoyo", "External storage state: " + externalStorageState);
+        }
+
+        File[] externalStorageVolumes = activity.getExternalFilesDirs(null);
+        File primaryExternalStorage = externalStorageVolumes[0];
+        File secondaryExternalStorage = externalStorageVolumes[1];
+        Log.i("yoyo", "Primary external storage: " + primaryExternalStorage);
+        Log.i("yoyo", "Secondary external storage: " + secondaryExternalStorage);
+
+
+        File targetDir = new File(secondaryExternalStorage, "MyAppFiles"); // Destination on SD card
+        Log.i("yoyo", "Target directory: " + targetDir);        
+        if (!targetDir.exists()) {
+            if (!targetDir.mkdirs()) {
+                Log.i("yoyo", "Failed to create target directory");
+                return;
+            }
+        }
+
+        try {
+            copyFolder(sourceDir.toPath(), targetDir.toPath());
+        } catch (IOException e) {
+            Log.e("yoyo", "Error copying files", e);
+        }
+    }
 }