device capabilities, API <19 prep

android/app/src/main/kotlin/deckers/thibault/aves/AnalysisService.kt

@@ -44,7 +44,7 @@ class AnalysisService : MethodChannel.MethodCallHandler, Service() {
 
         val messenger = backgroundFlutterEngine!!.dartExecutor.binaryMessenger
         // channels for analysis
-        MethodChannel(messenger, DeviceHandler.CHANNEL).setMethodCallHandler(DeviceHandler())
+        MethodChannel(messenger, DeviceHandler.CHANNEL).setMethodCallHandler(DeviceHandler(this))
         MethodChannel(messenger, GeocodingHandler.CHANNEL).setMethodCallHandler(GeocodingHandler(this))
         MethodChannel(messenger, MediaStoreHandler.CHANNEL).setMethodCallHandler(MediaStoreHandler(this))
         MethodChannel(messenger, MetadataFetchHandler.CHANNEL).setMethodCallHandler(MetadataFetchHandler(this))

android/app/src/main/kotlin/deckers/thibault/aves/MainActivity.kt

@@ -59,7 +59,7 @@ class MainActivity : FlutterActivity() {
         MethodChannel(messenger, AnalysisHandler.CHANNEL).setMethodCallHandler(analysisHandler)
         MethodChannel(messenger, AppAdapterHandler.CHANNEL).setMethodCallHandler(AppAdapterHandler(this))
         MethodChannel(messenger, DebugHandler.CHANNEL).setMethodCallHandler(DebugHandler(this))
-        MethodChannel(messenger, DeviceHandler.CHANNEL).setMethodCallHandler(DeviceHandler())
+        MethodChannel(messenger, DeviceHandler.CHANNEL).setMethodCallHandler(DeviceHandler(this))
         MethodChannel(messenger, EmbeddedDataHandler.CHANNEL).setMethodCallHandler(EmbeddedDataHandler(this))
         MethodChannel(messenger, GeocodingHandler.CHANNEL).setMethodCallHandler(GeocodingHandler(this))
         MethodChannel(messenger, GlobalSearchHandler.CHANNEL).setMethodCallHandler(GlobalSearchHandler(this))
@@ -163,11 +163,13 @@ class MainActivity : FlutterActivity() {
             return
         }
 
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
             // save access permissions across reboots
             val takeFlags = (data.flags
                     and (Intent.FLAG_GRANT_READ_URI_PERMISSION
                     or Intent.FLAG_GRANT_WRITE_URI_PERMISSION))
             contentResolver.takePersistableUriPermission(treeUri, takeFlags)
+        }
 
         // resume pending action
         onStorageAccessResult(requestCode, treeUri)

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/AppAdapterHandler.kt

@@ -51,8 +51,7 @@ class AppAdapterHandler(private val context: Context) : MethodCallHandler {
             "openMap" -> safe(call, result, ::openMap)
             "setAs" -> safe(call, result, ::setAs)
             "share" -> safe(call, result, ::share)
-            "canPin" -> safe(call, result, ::canPin)
+            "pinShortcut" -> GlobalScope.launch(Dispatchers.IO) { safe(call, result, ::pinShortcut) }
-            "pin" -> GlobalScope.launch(Dispatchers.IO) { safe(call, result, ::pin) }
             else -> result.notImplemented()
         }
     }
@@ -323,13 +322,7 @@ class AppAdapterHandler(private val context: Context) : MethodCallHandler {
 
     // shortcuts
 
-    private fun isPinSupported() = ShortcutManagerCompat.isRequestPinShortcutSupported(context)
+    private fun pinShortcut(call: MethodCall, result: MethodChannel.Result) {
-
-    private fun canPin(@Suppress("unused_parameter") call: MethodCall, result: MethodChannel.Result) {
-        result.success(isPinSupported())
-    }
-
-    private fun pin(call: MethodCall, result: MethodChannel.Result) {
         val label = call.argument<String>("label")
         val iconBytes = call.argument<ByteArray>("iconBytes")
         val filters = call.argument<List<String>>("filters")
@@ -339,7 +332,7 @@ class AppAdapterHandler(private val context: Context) : MethodCallHandler {
             return
         }
 
-        if (!isPinSupported()) {
+        if (!ShortcutManagerCompat.isRequestPinShortcutSupported(context)) {
             result.error("pin-unsupported", "failed because the launcher does not support pinning shortcuts", null)
             return
         }

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/DeviceHandler.kt

@@ -1,21 +1,36 @@
 package deckers.thibault.aves.channel.calls
 
+import android.content.Context
 import android.os.Build
+import androidx.core.content.pm.ShortcutManagerCompat
 import deckers.thibault.aves.channel.calls.Coresult.Companion.safe
 import io.flutter.plugin.common.MethodCall
 import io.flutter.plugin.common.MethodChannel
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import java.util.*
 
-class DeviceHandler : MethodCallHandler {
+class DeviceHandler(private val context: Context) : MethodCallHandler {
     override fun onMethodCall(call: MethodCall, result: MethodChannel.Result) {
         when (call.method) {
+            "getCapabilities" -> safe(call, result, ::getCapabilities)
             "getDefaultTimeZone" -> safe(call, result, ::getDefaultTimeZone)
             "getPerformanceClass" -> safe(call, result, ::getPerformanceClass)
             else -> result.notImplemented()
         }
     }
 
+    private fun getCapabilities(@Suppress("unused_parameter") call: MethodCall, result: MethodChannel.Result) {
+        result.success(hashMapOf(
+            "canGrantDirectoryAccess" to (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP),
+            "canPinShortcut" to ShortcutManagerCompat.isRequestPinShortcutSupported(context),
+            "canPrint" to (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT),
+            // as of google_maps_flutter v2.1.1, minSDK is 20 because of default PlatformView usage,
+            // but using hybrid composition would make it usable on API 19 too,
+            // cf https://github.com/flutter/flutter/issues/23728
+            "canRenderGoogleMaps" to (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH),
+        ))
+    }
+
     private fun getDefaultTimeZone(@Suppress("unused_parameter") call: MethodCall, result: MethodChannel.Result) {
         result.success(TimeZone.getDefault().id)
     }

android/app/src/main/kotlin/deckers/thibault/aves/channel/calls/MetadataFetchHandler.kt

@@ -73,6 +73,7 @@ import io.flutter.plugin.common.MethodChannel.MethodCallHandler
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.GlobalScope
 import kotlinx.coroutines.launch
+import java.nio.charset.Charset
 import java.nio.charset.StandardCharsets
 import java.text.ParseException
 import java.util.*
@@ -189,7 +190,15 @@ class MetadataFetchHandler(private val context: Context) : MethodCallHandler {
                                             val kv = pair as KeyValuePair
                                             val key = kv.key
                                             // `PNG-iTXt` uses UTF-8, contrary to `PNG-tEXt` and `PNG-zTXt` using Latin-1 / ISO-8859-1
-                                            val charset = if (baseDirName == PNG_ITXT_DIR_NAME) StandardCharsets.UTF_8 else kv.value.charset
+                                            val charset = if (baseDirName == PNG_ITXT_DIR_NAME) {
+                                                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+                                                    StandardCharsets.UTF_8
+                                                } else {
+                                                    Charset.forName("UTF-8")
+                                                }
+                                            } else {
+                                                kv.value.charset
+                                            }
                                             val valueString = String(kv.value.bytes, charset)
                                             val dirs = extractPngProfile(key, valueString)
                                             if (dirs?.any() == true) {

android/app/src/main/kotlin/deckers/thibault/aves/channel/streams/StorageAccessStreamHandler.kt

@@ -91,6 +91,12 @@ class StorageAccessStreamHandler(private val activity: Activity, arguments: Any?
     }
 
     private fun createFile() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+            // TODO TLAD [<=API18] create file
+            error("createFile-sdk", "unsupported SDK version=${Build.VERSION.SDK_INT}", null)
+            return
+        }
+
         val name = args["name"] as String?
         val mimeType = args["mimeType"] as String?
         val bytes = args["bytes"] as ByteArray?
@@ -128,6 +134,12 @@ class StorageAccessStreamHandler(private val activity: Activity, arguments: Any?
 
 
     private fun openFile() {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
+            // TODO TLAD [<=API18] open file
+            error("openFile-sdk", "unsupported SDK version=${Build.VERSION.SDK_INT}", null)
+            return
+        }
+
         val mimeType = args["mimeType"] as String?
         if (mimeType == null) {
             error("openFile-args", "failed because of missing arguments", null)

android/app/src/main/kotlin/deckers/thibault/aves/metadata/MultiPage.kt

@@ -54,9 +54,11 @@ object MultiPage {
                     // do not use `MediaFormat.KEY_TRACK_ID` as it is actually not unique between tracks
                     // e.g. there could be both a video track and an image track with KEY_TRACK_ID == 1
 
-                    format.getSafeInt(MediaFormat.KEY_IS_DEFAULT) { track[KEY_IS_DEFAULT] = it != 0 }
                     format.getSafeInt(MediaFormat.KEY_WIDTH) { track[KEY_WIDTH] = it }
                     format.getSafeInt(MediaFormat.KEY_HEIGHT) { track[KEY_HEIGHT] = it }
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
+                        format.getSafeInt(MediaFormat.KEY_IS_DEFAULT) { track[KEY_IS_DEFAULT] = it != 0 }
+                    }
                     if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                         format.getSafeInt(MediaFormat.KEY_ROTATION) { track[KEY_ROTATION_DEGREES] = it }
                     }

android/app/src/main/kotlin/deckers/thibault/aves/utils/PermissionManager.kt

@@ -195,21 +195,31 @@ object PermissionManager {
         } ?: false
     }
 
-    // returns paths matching URIs granted by the user
+    // returns paths matching directory URIs granted by the user
     fun getGrantedDirs(context: Context): Set<String> {
         val grantedDirs = HashSet<String>()
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
             for (uriPermission in context.contentResolver.persistedUriPermissions) {
                 val dirPath = StorageUtils.convertTreeUriToDirPath(context, uriPermission.uri)
                 dirPath?.let { grantedDirs.add(it) }
             }
+        }
         return grantedDirs
     }
 
     // returns paths accessible to the app (granted by the user or by default)
     private fun getAccessibleDirs(context: Context): Set<String> {
         val accessibleDirs = HashSet(getGrantedDirs(context))
-        // from Android R, we no longer have access permission by default on primary volume
+
-        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.Q) {
+        // until API 18 / Android 4.3 / Jelly Bean MR2, removable storage is accessible by default like primary storage
+        // from API 19 / Android 4.4 / KitKat, removable storage requires access permission, at the file level
+        // from API 21 / Android 5.0 / Lollipop, removable storage requires access permission, but directory access grant is possible
+        // from API 30 / Android 11 / R, any storage requires access permission
+        if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.JELLY_BEAN_MR2) {
+            accessibleDirs.addAll(StorageUtils.getVolumePaths(context))
+        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP
+            && Build.VERSION.SDK_INT <= Build.VERSION_CODES.Q
+        ) {
             accessibleDirs.add(StorageUtils.getPrimaryVolumePath(context))
         }
         return accessibleDirs
@@ -234,6 +244,7 @@ object PermissionManager {
         }
     }
 
+    @RequiresApi(Build.VERSION_CODES.LOLLIPOP)
     private fun releaseUriPermission(context: Context, it: Uri) {
         val flags = Intent.FLAG_GRANT_READ_URI_PERMISSION or Intent.FLAG_GRANT_WRITE_URI_PERMISSION
         context.contentResolver.releasePersistableUriPermission(it, flags)

lib/model/availability.dart

@@ -1,7 +1,7 @@
+import 'package:aves/model/device.dart';
 import 'package:aves/model/settings/settings.dart';
 import 'package:aves/theme/durations.dart';
 import 'package:connectivity_plus/connectivity_plus.dart';
-import 'package:device_info_plus/device_info_plus.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
 import 'package:github/github.dart';
@@ -62,12 +62,8 @@ class LiveAvesAvailability implements AvesAvailability {
   @override
   Future<bool> get canLocatePlaces => Future.wait<bool>([isConnected, hasPlayServices]).then((results) => results.every((result) => result));
 
-  // as of google_maps_flutter v2.1.1, minSDK is 20 because of default PlatformView usage,
-  // but using hybrid composition would make it usable on 19 too, cf https://github.com/flutter/flutter/issues/23728
-  Future<bool> get _isUseGoogleMapRenderingSupported => DeviceInfoPlugin().androidInfo.then((androidInfo) => (androidInfo.version.sdkInt ?? 0) >= 20);
-
   @override
-  Future<bool> get canUseGoogleMaps => Future.wait<bool>([_isUseGoogleMapRenderingSupported, hasPlayServices]).then((results) => results.every((result) => result));
+  Future<bool> get canUseGoogleMaps async => device.canRenderGoogleMaps && await hasPlayServices;
 
   @override
   Future<bool> get isNewVersionAvailable async {

lib/model/device.dart

@@ -0,0 +1,32 @@
+import 'package:aves/services/common/services.dart';
+import 'package:package_info_plus/package_info_plus.dart';
+
+final Device device = Device._private();
+
+class Device {
+  late final String _userAgent;
+  late final bool _canGrantDirectoryAccess, _canPinShortcut, _canPrint, _canRenderGoogleMaps;
+
+  String get userAgent => _userAgent;
+
+  bool get canGrantDirectoryAccess => _canGrantDirectoryAccess;
+
+  bool get canPinShortcut => _canPinShortcut;
+
+  bool get canPrint => _canPrint;
+
+  bool get canRenderGoogleMaps => _canRenderGoogleMaps;
+
+  Device._private();
+
+  Future<void> init() async {
+    final packageInfo = await PackageInfo.fromPlatform();
+    _userAgent = '${packageInfo.packageName}/${packageInfo.version}';
+
+    final capabilities = await deviceService.getCapabilities();
+    _canGrantDirectoryAccess = capabilities['canGrantDirectoryAccess'] ?? false;
+    _canPinShortcut = capabilities['canPinShortcut'] ?? false;
+    _canPrint = capabilities['canPrint'] ?? false;
+    _canRenderGoogleMaps = capabilities['canRenderGoogleMaps'] ?? false;
+  }
+}

lib/services/android_app_service.dart

@@ -6,7 +6,6 @@ import 'package:aves/services/common/services.dart';
 import 'package:aves/utils/android_file_utils.dart';
 import 'package:aves/utils/math_utils.dart';
 import 'package:collection/collection.dart';
-import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
 import 'package:latlong2/latlong.dart';
 
@@ -29,8 +28,6 @@ abstract class AndroidAppService {
 
   Future<bool> shareSingle(String uri, String mimeType);
 
-  Future<bool> canPinToHomeScreen();
-
   Future<void> pinToHomeScreen(String label, AvesEntry? coverEntry, {Set<CollectionFilter>? filters, String? uri});
 }
 
@@ -174,25 +171,6 @@ class PlatformAndroidAppService implements AndroidAppService {
 
   // app shortcuts
 
-  // this ability will not change over the lifetime of the app
-  bool? _canPin;
-
-  @override
-  Future<bool> canPinToHomeScreen() async {
-    if (_canPin != null) return SynchronousFuture(_canPin!);
-
-    try {
-      final result = await platform.invokeMethod('canPin');
-      if (result != null) {
-        _canPin = result;
-        return result;
-      }
-    } on PlatformException catch (e, stack) {
-      await reportService.recordError(e, stack);
-    }
-    return false;
-  }
-
   @override
   Future<void> pinToHomeScreen(String label, AvesEntry? coverEntry, {Set<CollectionFilter>? filters, String? uri}) async {
     Uint8List? iconBytes;
@@ -209,7 +187,7 @@ class PlatformAndroidAppService implements AndroidAppService {
       );
     }
     try {
-      await platform.invokeMethod('pin', <String, dynamic>{
+      await platform.invokeMethod('pinShortcut', <String, dynamic>{
         'label': label,
         'iconBytes': iconBytes,
         'filters': filters?.map((filter) => filter.toJson()).toList(),

lib/services/device_service.dart

@@ -2,6 +2,8 @@ import 'package:aves/services/common/services.dart';
 import 'package:flutter/services.dart';
 
 abstract class DeviceService {
+  Future<Map<String, dynamic>> getCapabilities();
+
   Future<String?> getDefaultTimeZone();
 
   Future<int> getPerformanceClass();
@@ -10,6 +12,17 @@ abstract class DeviceService {
 class PlatformDeviceService implements DeviceService {
   static const platform = MethodChannel('deckers.thibault/aves/device');
 
+  @override
+  Future<Map<String, dynamic>> getCapabilities() async {
+    try {
+      final result = await platform.invokeMethod('getCapabilities');
+      if (result != null) return (result as Map).cast<String, dynamic>();
+    } on PlatformException catch (e, stack) {
+      await reportService.recordError(e, stack);
+    }
+    return {};
+  }
+
   @override
   Future<String?> getDefaultTimeZone() async {
     try {

lib/widgets/aves_app.dart

@@ -3,6 +3,7 @@ import 'dart:ui';
 
 import 'package:aves/app_flavor.dart';
 import 'package:aves/app_mode.dart';
+import 'package:aves/model/device.dart';
 import 'package:aves/model/settings/accessibility_animations.dart';
 import 'package:aves/model/settings/screen_on.dart';
 import 'package:aves/model/settings/settings.dart';
@@ -28,15 +29,12 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:flutter_gen/gen_l10n/app_localizations.dart';
 import 'package:overlay_support/overlay_support.dart';
-import 'package:package_info_plus/package_info_plus.dart';
 import 'package:provider/provider.dart';
 import 'package:tuple/tuple.dart';
 
 class AvesApp extends StatefulWidget {
   final AppFlavor flavor;
 
-  static String userAgent = '';
-
   const AvesApp({
     Key? key,
     required this.flavor,
@@ -165,7 +163,7 @@ class _AvesAppState extends State<AvesApp> {
       isRotationLocked: await windowService.isRotationLocked(),
       areAnimationsRemoved: await AccessibilityService.areAnimationsRemoved(),
     );
-    unawaited(_initUserAgent());
+    await device.init();
     FijkLog.setLevel(FijkLogLevel.Warn);
 
     // keep screen on
@@ -210,11 +208,6 @@ class _AvesAppState extends State<AvesApp> {
     ];
   }
 
-  Future<void> _initUserAgent() async {
-    final info = await PackageInfo.fromPlatform();
-    AvesApp.userAgent = '${info.packageName}/${info.version}';
-  }
-
   void _onNewIntent(Map? intentData) {
     debugPrint('$runtimeType onNewIntent with intentData=$intentData');
 

lib/widgets/collection/app_bar.dart

@@ -10,7 +10,6 @@ import 'package:aves/model/settings/settings.dart';
 import 'package:aves/model/source/collection_lens.dart';
 import 'package:aves/model/source/collection_source.dart';
 import 'package:aves/model/source/enums.dart';
-import 'package:aves/services/common/services.dart';
 import 'package:aves/theme/durations.dart';
 import 'package:aves/theme/icons.dart';
 import 'package:aves/widgets/collection/entry_set_action_delegate.dart';
@@ -46,7 +45,6 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
   final List<StreamSubscription> _subscriptions = [];
   final EntrySetActionDelegate _actionDelegate = EntrySetActionDelegate();
   late AnimationController _browseToSelectAnimation;
-  late Future<bool> _canAddShortcutsLoader;
   final ValueNotifier<bool> _isSelectingNotifier = ValueNotifier(false);
   final FocusNode _queryBarFocusNode = FocusNode();
   late final Listenable _queryFocusRequestNotifier;
@@ -69,7 +67,6 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
       vsync: this,
     );
     _isSelectingNotifier.addListener(_onActivityChange);
-    _canAddShortcutsLoader = androidAppService.canPinToHomeScreen();
     _registerWidget(widget);
     WidgetsBinding.instance!.addPostFrameCallback((_) => _onFilterChanged());
   }
@@ -104,10 +101,6 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
   @override
   Widget build(BuildContext context) {
     final appMode = context.watch<ValueNotifier<AppMode>>().value;
-    return FutureBuilder<bool>(
-      future: _canAddShortcutsLoader,
-      builder: (context, snapshot) {
-        final canAddShortcuts = snapshot.data ?? false;
     return Selector<Selection<AvesEntry>, Tuple2<bool, int>>(
       selector: (context, selection) => Tuple2(selection.isSelecting, selection.selectedItems.length),
       builder: (context, s, child) {
@@ -127,7 +120,6 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
                   actions: _buildActions(
                     isSelecting: isSelecting,
                     selectedItemCount: selectedItemCount,
-                        supportShortcuts: canAddShortcuts,
                   ),
                   bottom: PreferredSize(
                     preferredSize: Size.fromHeight(appBarBottomHeight),
@@ -156,8 +148,6 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
         );
       },
     );
-      },
-    );
   }
 
   double get appBarBottomHeight {
@@ -214,14 +204,12 @@ class _CollectionAppBarState extends State<CollectionAppBar> with SingleTickerPr
   List<Widget> _buildActions({
     required bool isSelecting,
     required int selectedItemCount,
-    required bool supportShortcuts,
   }) {
     final appMode = context.watch<ValueNotifier<AppMode>>().value;
     bool isVisible(EntrySetAction action) => _actionDelegate.isVisible(
           action,
           appMode: appMode,
           isSelecting: isSelecting,
-          supportShortcuts: supportShortcuts,
           sortFactor: collection.sortFactor,
           itemCount: collection.entryCount,
           selectedItemCount: selectedItemCount,

lib/widgets/collection/entry_set_action_delegate.dart

@@ -4,6 +4,7 @@ import 'dart:io';
 import 'package:aves/app_mode.dart';
 import 'package:aves/model/actions/entry_set_actions.dart';
 import 'package:aves/model/actions/move_type.dart';
+import 'package:aves/model/device.dart';
 import 'package:aves/model/entry.dart';
 import 'package:aves/model/entry_xmp_iptc.dart';
 import 'package:aves/model/filters/album.dart';
@@ -44,7 +45,6 @@ class EntrySetActionDelegate with EntryEditorMixin, FeedbackMixin, PermissionAwa
     EntrySetAction action, {
     required AppMode appMode,
     required bool isSelecting,
-    required bool supportShortcuts,
     required EntrySortFactor sortFactor,
     required int itemCount,
     required int selectedItemCount,
@@ -67,7 +67,7 @@ class EntrySetActionDelegate with EntryEditorMixin, FeedbackMixin, PermissionAwa
       case EntrySetAction.toggleTitleSearch:
         return !isSelecting;
       case EntrySetAction.addShortcut:
-        return appMode == AppMode.main && !isSelecting && supportShortcuts;
+        return appMode == AppMode.main && !isSelecting && device.canPinShortcut;
       // browsing or selecting
       case EntrySetAction.map:
       case EntrySetAction.stats:

lib/widgets/common/map/leaflet/tile_layers.dart

@@ -1,4 +1,4 @@
-import 'package:aves/widgets/aves_app.dart';
+import 'package:aves/model/device.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter_map/flutter_map.dart';
 import 'package:provider/provider.dart';
@@ -53,7 +53,7 @@ class StamenWatercolorLayer extends StatelessWidget {
 
 class _NetworkTileProvider extends NetworkTileProvider {
   final Map<String, String> headers = {
-    'User-Agent': AvesApp.userAgent,
+    'User-Agent': device.userAgent,
   };
 
   _NetworkTileProvider();

lib/widgets/settings/privacy/privacy.dart

@@ -1,4 +1,5 @@
 import 'package:aves/app_flavor.dart';
+import 'package:aves/model/device.dart';
 import 'package:aves/model/settings/settings.dart';
 import 'package:aves/theme/icons.dart';
 import 'package:aves/utils/color_utils.dart';
@@ -63,7 +64,7 @@ class PrivacySection extends StatelessWidget {
           ),
         ),
         const HiddenItemsTile(),
-        const StorageAccessTile(),
+        if (device.canGrantDirectoryAccess) const StorageAccessTile(),
       ],
     );
   }

lib/widgets/viewer/overlay/top.dart

@@ -1,4 +1,5 @@
 import 'package:aves/model/actions/entry_actions.dart';
+import 'package:aves/model/device.dart';
 import 'package:aves/model/entry.dart';
 import 'package:aves/model/favourites.dart';
 import 'package:aves/model/settings/settings.dart';
@@ -79,7 +80,7 @@ class ViewerTopOverlay extends StatelessWidget {
           return targetEntry.canRotateAndFlip;
         case EntryAction.export:
         case EntryAction.print:
-          return !targetEntry.isVideo;
+          return !targetEntry.isVideo && device.canPrint;
         case EntryAction.openMap:
           return targetEntry.hasGps;
         case EntryAction.viewSource: