fix: get correct downloads directory

app/android/app/src/main/kotlin/org/localsend/localsend_app/MainActivity.kt

@@ -7,6 +7,7 @@ import android.content.Context
 import android.content.Intent
 import android.database.Cursor
 import android.net.Uri
+import android.os.Environment
 import android.provider.DocumentsContract
 import android.provider.Settings
 import io.flutter.embedding.android.FlutterActivity
@@ -79,11 +80,21 @@ class MainActivity : FlutterActivity() {
                     result.success(isAnimationsEnabled())
                 }
 
+                "getDownloadsDirectory" -> {
+                    result.success(getDownloadsDirectory())
+                }
+
                 else -> result.notImplemented()
             }
         }
     }
 
+    /// Absolute path of the shared "Download" directory (usually /storage/emulated/0/Download).
+    @Suppress("DEPRECATION")
+    private fun getDownloadsDirectory(): String {
+        return Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS).absolutePath
+    }
+
     private fun isAnimationsEnabled() : Boolean {
         return Settings.Global.getFloat(this.getContentResolver(),
             Settings.Global.ANIMATOR_DURATION_SCALE, 1.0f) != 0.0f;

app/lib/util/native/channel/android_channel.dart

@@ -39,6 +39,16 @@ Future<List<FileInfo>?> pickFilesAndroid() async {
   return result.map((e) => FileInfoMapper.fromJson((e as Map).cast<String, dynamic>())).toList();
 }
 
+/// Returns the global "Download" directory, e.g. /storage/emulated/0/Download.
+Future<String?> getDownloadsDirectoryAndroid() async {
+  try {
+    return await _methodChannel.invokeMethod<String>('getDownloadsDirectory');
+  } catch (e) {
+    _logger.warning('Could not get downloads directory', e);
+    return null;
+  }
+}
+
 Future<bool> getSystemAnimationsStatusAndroid() async {
   return await _methodChannel.invokeMethod('isAnimationsEnabled') ?? true;
 }

app/lib/util/native/directories.dart

@@ -1,13 +1,13 @@
 import 'dart:io' show Directory, Platform;
 
 import 'package:flutter/foundation.dart';
+import 'package:localsend_app/util/native/channel/android_channel.dart';
 import 'package:path_provider/path_provider.dart' as path;
 
 Future<String> getDefaultDestinationDirectory() async {
   switch (defaultTargetPlatform) {
     case TargetPlatform.android:
-      final dir = await path.getDownloadsDirectory();
-      return dir?.path ?? '/storage/emulated/0/Download';
+      return await getDownloadsDirectoryAndroid() ?? '/storage/emulated/0/Download';
     case TargetPlatform.iOS:
       return (await path.getApplicationDocumentsDirectory()).path;
     case TargetPlatform.linux: