diff --git a/lib/home/audioplayer.dart b/lib/home/audioplayer.dart
index ba5f92f..69399a0 100644
--- a/lib/home/audioplayer.dart
+++ b/lib/home/audioplayer.dart
@@ -320,7 +320,6 @@ class LastPosition extends StatelessWidget {
               FutureBuilder<PlayHistory>(
                   future: getPosition(episode),
                   builder: (context, snapshot) {
-                    if (snapshot.hasError) print(snapshot.error);
                     return snapshot.hasData
                         ? snapshot.data.seekValue > 0.90
                             ? Container(
diff --git a/lib/home/home.dart b/lib/home/home.dart
index 5bfa152..3186779 100644
--- a/lib/home/home.dart
+++ b/lib/home/home.dart
@@ -765,7 +765,6 @@ class _RecentUpdateState extends State<_RecentUpdate>
           return FutureBuilder<List<EpisodeBrief>>(
             future: _getRssItem(_top, _group),
             builder: (context, snapshot) {
-              if (snapshot.hasError) print(snapshot.error);
               return (snapshot.hasData)
                   ? snapshot.data.length == 0
                       ? Padding(
@@ -1059,7 +1058,6 @@ class _MyFavoriteState extends State<_MyFavorite>
           return FutureBuilder<List<EpisodeBrief>>(
             future: _getLikedRssItem(_top, _sortBy),
             builder: (context, snapshot) {
-              if (snapshot.hasError) print(snapshot.error);
               return (snapshot.hasData)
                   ? snapshot.data.length == 0
                       ? Padding(
diff --git a/lib/home/home_groups.dart b/lib/home/home_groups.dart
index 9ae3689..7adad2d 100644
--- a/lib/home/home_groups.dart
+++ b/lib/home/home_groups.dart
@@ -430,10 +430,6 @@ class PodcastPreview extends StatelessWidget {
                 return FutureBuilder<List<EpisodeBrief>>(
                   future: _getRssItemTop(podcastLocal),
                   builder: (context, snapshot) {
-                    if (snapshot.hasError) {
-                      print(snapshot.error);
-                      Center();
-                    }
                     return (snapshot.hasData)
                         ? ShowEpisode(
                             episodes: snapshot.data,
diff --git a/lib/home/home_menu.dart b/lib/home/home_menu.dart
index c355cee..4407a9f 100644
--- a/lib/home/home_menu.dart
+++ b/lib/home/home_menu.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:developer' as developer;
 import 'dart:io';
 
 import 'package:file_picker/file_picker.dart';
@@ -71,7 +72,7 @@ class _PopupMenuState extends State<PopupMenu> {
         }
       }
     } catch (e) {
-      print(e);
+      developer.log(e, name: 'OMPL parse error');
       Fluttertoast.showToast(
         msg: s.toastFileError,
         gravity: ToastGravity.TOP,
@@ -86,15 +87,13 @@ class _PopupMenuState extends State<PopupMenu> {
       if (filePath == '') {
         return;
       }
-      print('File Path$filePath');
-      //importOmpl.importState = ImportState.start;
       Fluttertoast.showToast(
         msg: s.toastReadFile,
         gravity: ToastGravity.TOP,
       );
       _saveOmpl(filePath);
     } on PlatformException catch (e) {
-      print(e.toString());
+      developer.log(e.toString(), name: 'Get OMPL file');
     }
   }
 
diff --git a/lib/local_storage/key_value_storage.dart b/lib/local_storage/key_value_storage.dart
index 2b28fd6..c294015 100644
--- a/lib/local_storage/key_value_storage.dart
+++ b/lib/local_storage/key_value_storage.dart
@@ -53,7 +53,6 @@ class KeyValueStorage {
             'groups': [home.toEntity().toJson()]
           }));
     }
-    print(prefs.getString(key));
     return json
         .decode(prefs.getString(key))['groups']
         .cast<Map<String, Object>>()
diff --git a/lib/local_storage/sqflite_localpodcast.dart b/lib/local_storage/sqflite_localpodcast.dart
index e00322f..148aad3 100644
--- a/lib/local_storage/sqflite_localpodcast.dart
+++ b/lib/local_storage/sqflite_localpodcast.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:developer' as developer;
 
 import 'package:dio/dio.dart';
 import 'package:flutter_downloader/flutter_downloader.dart';
@@ -427,7 +428,7 @@ class DBHelper {
       }
     }
     date.add(Duration(hours: timezoneInt)).add(DateTime.now().timeZoneOffset);
-    print(date.toString());
+    developer.log(date.toString());
     return date;
   }
 
@@ -467,7 +468,7 @@ class DBHelper {
     var dbClient = await database;
     String description, url;
     for (var i = 0; i < result; i++) {
-      print(feed.items[i].title);
+      developer.log(feed.items[i].title);
       description = _getDescription(feed.items[i]?.content?.value ?? '',
           feed.items[i].description ?? '', feed.items[i].itunes.summary ?? '');
       if (feed.items[i].enclosure != null) {
@@ -536,7 +537,7 @@ class DBHelper {
               [podcastLocal.id]);
         }
         for (var item in feed.items) {
-          print(item.title);
+          developer.log(item.title);
           description = _getDescription(item.content.value ?? '',
               item.description ?? '', item.itunes.summary ?? '');
 
@@ -550,7 +551,6 @@ class DBHelper {
           final length = item?.enclosure?.length ?? 0;
           final pubDate = item.pubDate;
           final date = _parsePubDate(pubDate);
-          print(date.toString());
           final milliseconds = date.millisecondsSinceEpoch;
           final duration = item.itunes.duration?.inSeconds ?? 0;
           final explicit = _getExplicit(item.itunes.explicit);
@@ -586,7 +586,7 @@ class DBHelper {
       }
       return 0;
     } catch (e) {
-      print(e);
+      developer.log(e, name: 'Update podcast error');
       return -1;
     }
   }
@@ -1009,7 +1009,7 @@ class DBHelper {
       await txn.rawUpdate(
           "UPDATE Episodes SET is_new = 0 WHERE enclosure_url = ?", [url]);
     });
-    print('remove new episode $url');
+    developer.log('remove new episode $url');
   }
 
   Future<List<EpisodeBrief>> getLikedRssItem(int i, int sortBy) async {
@@ -1126,7 +1126,7 @@ class DBHelper {
           "UPDATE Episodes SET downloaded = 'ND', media_id = ? WHERE enclosure_url = ?",
           [url, url]);
     });
-    print('Deleted $url');
+    developer.log('Deleted $url');
     return count;
   }
 
diff --git a/lib/podcasts/podcast_detail.dart b/lib/podcasts/podcast_detail.dart
index b16ee11..75a24d9 100644
--- a/lib/podcasts/podcast_detail.dart
+++ b/lib/podcasts/podcast_detail.dart
@@ -187,10 +187,7 @@ class _PodcastDetailState extends State<PodcastDetail> {
           widget.podcastLocal.title,
           maxLines: 2,
           overflow: TextOverflow.ellipsis,
-          style: Theme.of(context)
-              .textTheme
-              .headline5
-              .copyWith(color: Colors.white),
+          style: context.textTheme.headline5.copyWith(color: Colors.white),
         ),
       ),
     );
@@ -821,7 +818,6 @@ class _PodcastDetailState extends State<PodcastDetail> {
                                     filter: _filter,
                                     query: _query),
                                 builder: (context, snapshot) {
-                                  if (snapshot.hasError) print(snapshot.error);
                                   return (snapshot.hasData)
                                       ? EpisodeGrid(
                                           episodes: snapshot.data,
diff --git a/lib/podcasts/podcast_group.dart b/lib/podcasts/podcast_group.dart
index 5937861..cfe3e9d 100644
--- a/lib/podcasts/podcast_group.dart
+++ b/lib/podcasts/podcast_group.dart
@@ -289,7 +289,6 @@ class _PodcastCardState extends State<PodcastCard>
                                           setState(() {
                                             if (!value) {
                                               _selectedGroups.remove(group);
-                                              print(group.name);
                                             } else {
                                               _selectedGroups.add(group);
                                             }
@@ -313,7 +312,6 @@ class _PodcastCardState extends State<PodcastCard>
                                     ),
                                     IconButton(
                                       onPressed: () async {
-                                        print(_selectedGroups);
                                         if (_selectedGroups.length > 0) {
                                           setState(() {
                                             _addGroup = false;
diff --git a/lib/service/ompl_build.dart b/lib/service/ompl_build.dart
index 5f91de9..f13e22c 100644
--- a/lib/service/ompl_build.dart
+++ b/lib/service/ompl_build.dart
@@ -1,3 +1,4 @@
+import 'dart:developer' as developer;
 import 'dart:io';
 
 import 'package:xml/xml.dart' as xml;
@@ -60,7 +61,7 @@ class PodcastsBackup {
     var content = xml.XmlDocument.parse(opml);
     var title =
         content.findAllElements('head').first.findElements('title').first.text;
-    print(title);
+    developer.log(title, name: 'Import OMPL');
     var groups = content.findAllElements('body').first.findElements('outline');
     if (title != 'Tsacdop Feed Groups') {
       var total = content
@@ -68,7 +69,6 @@ class PodcastsBackup {
           .map((ele) => OmplOutline.parse(ele))
           .toList();
       data['Home'] = total;
-      print(data.toString());
       return data;
     }
 
@@ -80,7 +80,6 @@ class PodcastsBackup {
           .toList();
       data[title] = total;
     }
-    print(data.toString());
     return data;
   }
 }
diff --git a/lib/settings/data_backup.dart b/lib/settings/data_backup.dart
index a3c935e..15fc2ba 100644
--- a/lib/settings/data_backup.dart
+++ b/lib/settings/data_backup.dart
@@ -1,4 +1,5 @@
 import 'dart:convert';
+import 'dart:developer' as developer;
 import 'dart:io';
 
 import 'package:file_picker/file_picker.dart';
@@ -80,7 +81,7 @@ class _DataBackupState extends State<DataBackup> {
         gravity: ToastGravity.BOTTOM,
       );
     } catch (e) {
-      print(e);
+      developer.log(e, name: 'Import settings');
       Fluttertoast.showToast(
         msg: s.toastFileError,
         gravity: ToastGravity.BOTTOM,
@@ -95,14 +96,13 @@ class _DataBackupState extends State<DataBackup> {
       if (filePath == '') {
         return;
       }
-      print('File Path$filePath');
       Fluttertoast.showToast(
         msg: s.toastReadFile,
         gravity: ToastGravity.BOTTOM,
       );
       _importSetting(filePath, context);
     } on PlatformException catch (e) {
-      print(e.toString());
+      developer.log(e.toString(), name: 'Get file path');
     }
   }
 
diff --git a/lib/settings/downloads_manage.dart b/lib/settings/downloads_manage.dart
index 832bb08..e844898 100644
--- a/lib/settings/downloads_manage.dart
+++ b/lib/settings/downloads_manage.dart
@@ -44,7 +44,6 @@ class _DownloadsManageState extends State<DownloadsManage> {
     _size = 0;
     _fileNum = 0;
     var dir = await getExternalStorageDirectory();
-    print(dir.path);
     dir.list().forEach((d) {
       var fileDir = Directory(d.path);
       fileDir.list().forEach((file) async {
diff --git a/lib/settings/history.dart b/lib/settings/history.dart
index 9c8b3b1..4f2dca3 100644
--- a/lib/settings/history.dart
+++ b/lib/settings/history.dart
@@ -1,3 +1,5 @@
+import 'dart:developer' as developer;
+
 import 'package:dio/dio.dart';
 import 'package:fl_chart/fl_chart.dart';
 import 'package:flutter/material.dart';
@@ -84,8 +86,8 @@ class _PlayedHistoryState extends State<PlayedHistory>
       var item = SubscribeItem(podcast.rss, podcast.title,
           imgUrl: podcast.image, group: 'Home');
       subscribeWorker.setSubscribeItem(item);
-    } on DioError catch (e) {
-      print(e);
+    } catch (e) {
+      developer.log(e.toString(), name: 'Recover podcast error');
       Fluttertoast.showToast(
         msg: context.s.toastRecoverFailed,
         gravity: ToastGravity.BOTTOM,
diff --git a/lib/state/audio_state.dart b/lib/state/audio_state.dart
index cb3bafa..08bc5f1 100644
--- a/lib/state/audio_state.dart
+++ b/lib/state/audio_state.dart
@@ -282,7 +282,6 @@ class AudioPlayerNotifier extends ChangeNotifier {
 
   Future<void> episodeLoad(EpisodeBrief episode,
       {int startPosition = 0}) async {
-    print(episode.enclosureUrl);
     final episodeNew = await dbHelper.getRssItemWithUrl(episode.enclosureUrl);
     //TODO  load episode from last position when player running
     if (playerRunning) {
@@ -434,7 +433,6 @@ class AudioPlayerNotifier extends ChangeNotifier {
 
     AudioService.customEventStream.distinct().listen((event) async {
       if (event is String && _episode.title == event) {
-        print(event);
         _queue.delFromPlaylist(_episode);
         _lastPostion = 0;
         notifyListeners();
diff --git a/lib/state/download_state.dart b/lib/state/download_state.dart
index fcf29f5..aaf40c8 100644
--- a/lib/state/download_state.dart
+++ b/lib/state/download_state.dart
@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:developer' as developer;
 import 'dart:io';
 import 'dart:isolate';
 import 'dart:ui';
@@ -27,13 +28,14 @@ class EpisodeTask {
 }
 
 void downloadCallback(String id, DownloadTaskStatus status, int progress) {
-  print('Homepage callback task in $id  status ($status) $progress');
+  developer.log('Homepage callback task in $id  status ($status) $progress');
   final send = IsolateNameServer.lookupPortByName('downloader_send_port');
   send.send([id, status, progress]);
 }
 
 void autoDownloadCallback(String id, DownloadTaskStatus status, int progress) {
-  print('Autodownload callback task in $id  status ($status) $progress');
+  developer
+      .log('Autodownload callback task in $id  status ($status) $progress');
   final send = IsolateNameServer.lookupPortByName('auto_downloader_send_port');
   send.send([id, status, progress]);
 }
@@ -56,7 +58,6 @@ class AutoDownloader {
       bindBackgroundIsolate();
       return;
     }
-    print('start listen');
     _port.listen((dynamic data) {
       String id = data[0];
       DownloadTaskStatus status = data[1];
@@ -206,7 +207,6 @@ class DownloadState extends ChangeNotifier {
         query: "SELECT * FROM task WHERE task_id = '${episodeTask.taskId}'");
     var filePath =
         'file://${path.join(completeTask.first.savedDir, Uri.encodeComponent(completeTask.first.filename))}';
-    print(filePath);
     var fileStat = await File(
             path.join(completeTask.first.savedDir, completeTask.first.filename))
         .stat();
@@ -325,7 +325,7 @@ class DownloadState extends ChangeNotifier {
   }
 
   _autoDelete() async {
-    print('Start auto delete outdated episodes');
+    developer.log('Start auto delete outdated episodes');
     var autoDeleteStorage = KeyValueStorage(autoDeleteKey);
     var autoDelete = await autoDeleteStorage.getInt();
     if (autoDelete == 0) {
diff --git a/lib/state/podcast_group.dart b/lib/state/podcast_group.dart
index 8d67b94..08a3f8c 100644
--- a/lib/state/podcast_group.dart
+++ b/lib/state/podcast_group.dart
@@ -1,4 +1,5 @@
 import 'dart:core';
+import 'dart:developer' as developer;
 import 'dart:io';
 import 'dart:isolate';
 import 'dart:math' as math;
@@ -445,7 +446,6 @@ Future<void> subIsolateEntryPoint(SendPort sendPort) async {
       connectTimeout: 20000,
       receiveTimeout: 20000,
     );
-    print(rss);
 
     try {
       var response = await Dio(options).get(rss);
@@ -495,7 +495,7 @@ Future<void> subIsolateEntryPoint(SendPort sendPort) async {
             var image = img.decodeImage(imageResponse.data);
             thumbnail = img.copyResize(image, width: 300);
           } catch (e) {
-            print(e);
+            developer.log(e.toString(), name: 'Download image error');
             try {
               var index = math.Random().nextInt(3);
               var imageResponse = await Dio().get<List<int>>(
@@ -506,7 +506,7 @@ Future<void> subIsolateEntryPoint(SendPort sendPort) async {
                   "${listColor[index]}&color=fff&name=${item.title}&length=2&bold=true";
               thumbnail = img.decodeImage(imageResponse.data);
             } catch (e) {
-              print(e);
+              developer.log(e.toString(), name: 'Donwload image error');
               sendPort.send([item.title, item.url, 6]);
               await Future.delayed(Duration(seconds: 2));
               sendPort.send([item.title, item.url, 4]);
@@ -539,7 +539,7 @@ Future<void> subIsolateEntryPoint(SendPort sendPort) async {
           try {
             await data.fatchData();
           } catch (e) {
-            print(e);
+            developer.log(e.toString(), name: 'Fatch fireside data error');
           }
         }
         await dbHelper.savePodcastRss(p, uuid);
@@ -567,7 +567,7 @@ Future<void> subIsolateEntryPoint(SendPort sendPort) async {
         }
       }
     } catch (e) {
-      print('$e confirm');
+      developer.log('$e confirm');
       sendPort.send([item.title, item.url, 6]);
       await Future.delayed(Duration(seconds: 2));
       sendPort.send([item.title, item.url, 4]);
diff --git a/lib/state/refresh_podcast.dart b/lib/state/refresh_podcast.dart
index e8b5a4e..4fa002b 100644
--- a/lib/state/refresh_podcast.dart
+++ b/lib/state/refresh_podcast.dart
@@ -1,3 +1,4 @@
+import 'dart:developer' as developer;
 import 'dart:isolate';
 
 import 'package:flutter/material.dart';
@@ -74,7 +75,7 @@ Future<void> refreshIsolateEntryPoint(SendPort sendPort) async {
   for (var podcastLocal in podcastList) {
     sendPort.send([podcastLocal.title, 1]);
     var updateCount = await dbHelper.updatePodcastRss(podcastLocal);
-    print('Refresh ${podcastLocal.title}$updateCount');
+    developer.log('Refresh ${podcastLocal.title}$updateCount');
   }
   sendPort.send("done");
 }
diff --git a/lib/state/setting_state.dart b/lib/state/setting_state.dart
index a52aa43..adb706d 100644
--- a/lib/state/setting_state.dart
+++ b/lib/state/setting_state.dart
@@ -1,3 +1,4 @@
+import 'dart:developer' as developer;
 import 'dart:io';
 import 'dart:ui';
 
@@ -25,7 +26,7 @@ void callbackDispatcher() {
       var lastWork = await lastWorkStorage.getInt();
       for (var podcastLocal in podcastList) {
         await dbHelper.updatePodcastRss(podcastLocal, removeMark: lastWork);
-        print('Refresh ${podcastLocal.title}');
+        developer.log('Refresh ${podcastLocal.title}');
       }
       await FlutterDownloader.initialize();
       var downloader = AutoDownloader();
@@ -140,12 +141,12 @@ class SettingState extends ChangeNotifier {
         constraints: Constraints(
           networkType: NetworkType.connected,
         ));
-    print('work manager init done + ');
+    developer.log('work manager init done + ');
   }
 
   Future cancelWork() async {
     await Workmanager.cancelAll();
-    print('work job cancelled');
+    developer.log('work job cancelled');
   }
 
   Color _accentSetColor;
@@ -348,7 +349,6 @@ class SettingState extends ChangeNotifier {
       _locale = Locale(localeString.first, localeString[1]);
     }
     await S.load(_locale);
-    print(_locale.toString());
   }
 
   Future _saveAccentSetColor() async {
diff --git a/lib/type/fireside_data.dart b/lib/type/fireside_data.dart
index 26a8da1..da60196 100644
--- a/lib/type/fireside_data.dart
+++ b/lib/type/fireside_data.dart
@@ -41,8 +41,6 @@ class FiresideData {
         PodcastHost host;
         var name = element.text.trim();
         var image = element.children.first.children.first.attributes.toString();
-        print(reg.stringMatch(image));
-
         host = PodcastHost(
             name,
             reg.stringMatch(image) ??
diff --git a/lib/type/playlist.dart b/lib/type/playlist.dart
index 9c1b865..fda4f28 100644
--- a/lib/type/playlist.dart
+++ b/lib/type/playlist.dart
@@ -55,7 +55,6 @@ class Playlist {
     var index = _playlist.indexOf(episodeBrief);
     _playlist.removeWhere(
         (episode) => episode.enclosureUrl == episodeBrief.enclosureUrl);
-    print('delete${episodeBrief.title}');
     await savePlaylist();
     return index;
   }
diff --git a/lib/util/extension_helper.dart b/lib/util/extension_helper.dart
index 1f2b747..9d16459 100644
--- a/lib/util/extension_helper.dart
+++ b/lib/util/extension_helper.dart
@@ -1,4 +1,5 @@
 import 'dart:convert';
+import 'dart:developer' as developer;
 
 import 'package:flutter/material.dart';
 import 'package:fluttertoast/fluttertoast.dart';
@@ -63,7 +64,7 @@ extension StringExtension on String {
     if (await canLaunch(this)) {
       await launch(this);
     } else {
-      print('Could not launch $this');
+      developer.log('Could not launch $this');
       Fluttertoast.showToast(
         msg: '$this Invalid Link',
         gravity: ToastGravity.TOP,