Hi, I've made some adoptions to use moor_ffi instead of moor_flutter on Android and iOS. As this switches moor to the develop branch which already contains breaking changes for the next major release, this PR is a bit bigger than it could have been. The relevant changes are all in mobile.dart to open the database.

I tested this on Android and Linux, the database was working fine on both platforms. I did have some rendering issues on Linux, but I don't think that moor has anything to do with that. It should work on iOS and macOS as well, but I can't verify that until Monday.

Rather unrelated question: Do you intend to keep this repository open? I would like to link it from the examples section in moor's documentation, if that's ok.

I all platfroms such as iOS, MacOS, Web, work well with this project, except android, when I try to run this project on Android device(actually emulator), it throw the following exception. Can you help why? Thanks.

-----------Stack trace----------- Launching lib/main.dart on Android SDK built for x86 in debug mode... Running Gradle task 'assembleDebug'...

FAILURE: Build failed with an exception.

• Where: Build file '/Users/mac/development/flutter/.pub-cache/hosted/pub.dartlang.org/moor_ffi-0.2.0/android/build.gradle' line: 13

• What went wrong: Error resolving plugin [id: 'de.undercouch.download', version: '4.0.0']

Plugin request for plugin already on the classpath must not include a version

• Try: Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

• Get more help at https://help.gradle.org

BUILD FAILED in 1s Exception: Gradle task assembleDebug failed with exit code 1

When using on my physical Android device, it crashed as follows: The device is using Android 7.1.2:

But, it work fine on the Android emulator running on the MacOS:

My question is whether moor requires the minimum version of Android to make it works? If yes, I hope to make it support as extent as possible when it comes to Android version, because our product will meet users with different background.

Will Moor save the stack trace in a file on the device? If yes, please tell me where, so that I can send you it.

Am I missing anything before I release the code to a physical device? Thanks.

It worked good before I upgrade moor and moor_ffi to the latest version. I think this is caused by the different APIs among these version. Can you update this project to support the latest version of moor and moor_ffi, since I'd like to upgrade these packages to up-to-date ones. Thanks.

Stack trace as follow:

Launching lib/main.dart on iPad (7th generation) in debug mode... Running pod install... Running Xcode build... Xcode build done. 15.0s Failed to build iOS app Could not build the application for the simulator. Error launching application on iPad (7th generation). Error output from Xcode build: ↳ ** BUILD FAILED **

Xcode's output: ↳ lib/data/database/database.g.dart:10:7: Error: The non-abstract class 'TodoEntry' is missing implementations for these members:

• Insertable.toColumns Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class TodoEntry extends DataClass implements Insertable { ^^^^^^^^^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/data_class.dart:22:27: Context: 'Insertable.toColumns' is defined here. Map<String, Expression> toColumns(bool nullToAbsent); ^^^^^^^^^ lib/data/database/database.g.dart:104:7: Error: The non-abstract class 'TodosCompanion' is missing implementations for these members:

• Insertable.toColumns Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class TodosCompanion extends UpdateCompanion { ^^^^^^^^^^^^^^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/data_class.dart:22:27: Context: 'Insertable.toColumns' is defined here. Map<String, Expression> toColumns(bool nullToAbsent); ^^^^^^^^^ lib/data/database/database.g.dart:252:7: Error: The non-abstract class 'Category' is missing implementations for these members:

• Insertable.toColumns Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class Category extends DataClass implements Insertable { ^^^^^^^^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/data_class.dart:22:27: Context: 'Insertable.toColumns' is defined here. Map<String, Expression> toColumns(bool nullToAbsent); ^^^^^^^^^ lib/data/database/database.g.dart:316:7: Error: The non-abstract class 'CategoriesCompanion' is missing implementations for these members:

• Insertable.toColumns Try to either
• provide an implementation,
• inherit an implementation from a superclass or mixin,
• mark the class as abstract, or
• provide a 'noSuchMethod' implementation.

class CategoriesCompanion extends UpdateCompanion { ^^^^^^^^^^^^^^^^^^^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/data_class.dart:22:27: Context: 'Insertable.toColumns' is defined here. Map<String, Expression> toColumns(bool nullToAbsent); ^^^^^^^^^ lib/data/database/database.g.dart:191:56: Error: The parameter 'd' of the method '$TodosTable.validateIntegrity' has type 'TodosCompanion', which does not match the corresponding type, 'Insertable', in the overridden method, 'TableInfo.validateIntegrity'.

• 'TodosCompanion' is from 'package:flutterapp2/data/database/database.dart' ('lib/data/database/database.dart').
• 'Insertable' is from 'package:moor/src/runtime/data_class.dart' ('../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/data_class.dart').
• 'TodoEntry' is from 'package:flutterapp2/data/database/database.dart' ('lib/data/database/database.dart'). Change to a supertype of 'Insertable', or, for a covariant parameter, a subtype. VerificationContext validateIntegrity(TodosCompanion d, ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/schema/table_info.dart:49:23: Context: This is the overridden method ('validateIntegrity'). VerificationContext validateIntegrity(Insertable instance, ^ lib/data/database/database.g.dart:372:61: Error: The parameter 'd' of the method '$CategoriesTable.validateIntegrity' has type 'CategoriesCompanion', which does not match the corresponding type, 'Insertable', in the overridden method, 'TableInfo.validateIntegrity'.
• 'CategoriesCompanion' is from 'package:flutterapp2/data/database/database.dart' ('lib/data/database/database.dart').
• 'Insertable' is from 'package:moor/src/runtime/data_class.dart' ('../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/data_class.dart').
• 'Category' is from 'package:flutterapp2/data/database/database.dart' ('lib/data/database/database.dart'). Change to a supertype of 'Insertable', or, for a covariant parameter, a subtype. VerificationContext validateIntegrity(CategoriesCompanion d, ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/schema/table_info.dart:49:23: Context: This is the overridden method ('validateIntegrity'). VerificationContext validateIntegrity(Insertable instance, ^ lib/data/database/database.g.dart:232:19: Error: Expected 1 type arguments. map['id'] = Variable<int, IntType>(d.id.value); ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/expressions/variables.dart:22:9: Context: Found this candidate, but the arguments don't match. const Variable(this.value); ^^^^^^^^ lib/data/database/database.g.dart:235:24: Error: Expected 1 type arguments. map['content'] = Variable<String, StringType>(d.content.value); ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/expressions/variables.dart:22:9: Context: Found this candidate, but the arguments don't match. const Variable(this.value); ^^^^^^^^ lib/data/database/database.g.dart:238:28: Error: Expected 1 type arguments. map['target_date'] = Variable<DateTime, DateTimeType>(d.targetDate.value); ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/expressions/variables.dart:22:9: Context: Found this candidate, but the arguments don't match. const Variable(this.value); ^^^^^^^^ lib/data/database/database.g.dart:241:25: Error: Expected 1 type arguments. map['category'] = Variable<int, IntType>(d.category.value); ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/expressions/variables.dart:22:9: Context: Found this candidate, but the arguments don't match. const Variable(this.value); ^^^^^^^^ lib/data/database/database.g.dart:401:19: Error: Expected 1 type arguments. map['id'] = Variable<int, IntType>(d.id.value); ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/expressions/variables.dart:22:9: Context: Found this candidate, but the arguments don't match. const Variable(this.value); ^^^^^^^^ lib/data/database/database.g.dart:404:21: Error: Expected 1 type arguments. map['desc'] = Variable<String, StringType>(d.description.value); ^ ../../development/flutter/.pub-cache/hosted/pub.dartlang.org/moor-3.1.0/lib/src/runtime/query_builder/expressions/variables.dart:22:9: Context: Found this candidate, but the arguments don't match. const Variable(this.value); ^^^^^^^^

Command PhaseScriptExecution failed with a nonzero exit code note: Using new build system note: Building targets in parallel note: Planning build note: Constructing build description

I forked your code and tried to run flutter packages pub run build_runner build to regenerate database.g.dart. I'm getting this stacktrace and generation just repeats 2/18 actions completed message over and over

[INFO] Running build...
[INFO] Generating SDK summary...
[SEVERE] moor_generator:moor_generator on test/widget_test.dart:

Bad state: Unexpected diagnostics:
/Users/rs186002/bin/flutter/bin/cache/dart-sdk/lib/core/uri.dart:3259:39 - Expected an identifier.
[SEVERE] moor_generator:moor_generator on test/widget_test.dart:

...

[INFO] 16.2s elapsed, 2/18 actions completed.
[WARNING] No actions completed for 15.0s, waiting on:
  - moor_generator:moor_generator on lib/ui/common/index.dart
  - moor_generator:moor_generator on lib/ui/common/categories_drawer.dart
  - moor_generator:moor_generator on lib/ui/common/add_category_dialog.dart
  - moor_generator:moor_generator on lib/ui/common/todo_edit_dialog.dart
  - moor_generator:moor_generator on lib/ui/common/todo_card.dart
  .. and 11 more

[INFO] 17.6s elapsed, 2/18 actions completed.

I'm on macOS Catalina 10.15.6 running

Flutter 1.20.0 • channel beta • https://github.com/flutter/flutter.git
Framework • revision 916c3ac648 (11 days ago) • 2020-08-01 09:01:12 -0700
Engine • revision d6ee1499c2
Tools • Dart 2.9.0 (build 2.9.0-21.10.beta)
Android Studio 4.1 beta 5

Switch from the current develop branch to the beta branch of moor.

There are no major changes since the last PR, but the beta branch is updated less frequently and is generally more stable. On macOS and iOS, moor_ffi will now attempt to open /usr/lib/libsqlite3.dylib instead of just libsqlite3.dylib.

Please let me know if you run into any issues - I hope to release a first version of moor_ffi very soon :pray:

How to return SharedDatabase instance for web from constructDb()

I followed moor_shared example and everything was working perfect until I updated moor to v4.

in web.dart file I was constructing SharedDatabase like this before:

web.dart

SharedDatabase constructDb({bool logStatements = false}) {
  return SharedDatabase(WebDatabase.withStorage(
      MoorWebStorage.indexedDbIfSupported('my_database'),
      logStatements: logStatements));
}

but after updating moor to v4 MoorWebStorage is now Future

WebDatabase.withStorage(await MoorWebStorage.indexedDbIfSupported(name))

how can I return the SharedDatabase without Future so that I can use constructDb() because for mobile constructsDb() returns simply SharedDatabase like this:

mobile.dart

SharedDatabase constructDb({bool logStatements = false}) {
  if (Platform.isIOS || Platform.isAndroid) {
    final executor = LazyDatabase(() async {
      final dataDir = await paths.getApplicationDocumentsDirectory();
      final dbFile =
          File(p.join(dataDir.path, 'my_database.sqlite'));
      return VmDatabase(dbFile, logStatements: logStatements);
    });
    return SharedDatabase(executor);
  }
  if (Platform.isMacOS || Platform.isLinux) {
    final file = File('my_database.sqlite');
    return SharedDatabase(
        VmDatabase(file, logStatements: logStatements));
  }
  if (Platform.isWindows) {
    final file = File('my_database.sqlite');
    return SharedDatabase(
        VmDatabase(file, logStatements: logStatements));
  }

  return SharedDatabase(
      VmDatabase.memory(logStatements: logStatements));
} 

Fixing #5 compilation issue. Now the app compiles properly with current master (or v1.15.3 if you want to check it out with flutter version v1.15.3). This PR does not solve the exception that ffi is throwing

Invalid argument(s): Failed to load dynamic library (193)

The example failed to run with the recent Flutter v1.11.0 and also the android build did fail due to the lack of migration to AndroidX

Have tested it on both Android, Web, Linux but due to the lack of Mac and iOS I wasn't able to test it there.

All should work as before as just refreshed the desktop folders from the current Flutter Desktop Embeddings

one problem I found from the start undo not work I thing is can be because bloc ( I not worked with ) maybe Rx library: some class was deprecated and I find replacement from the google ( and i not work with rx before )

is all to you now ( accept all and fix the bug ) May God guide you

I got build error when trying to run on iOS, here is the log

Failed to build iOS app
Error output from Xcode build:
↳
    ** BUILD FAILED **


Xcode's output:
↳
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/path_provider_windows-0.0.4+3/lib/src/path_provider_windows_real.dart:126:25: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
              knownFolderID.addressOf, KF_FLAG_DEFAULT, NULL, pathPtrPtr);
                            ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1067:7: Error: The getter 'addressOf' isn't defined for the class 'LOGFONT'.
     - 'LOGFONT' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
          addressOf.cast<Uint8>().elementAt(28).cast<Utf16>();
          ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1112:29: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
     - 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      LOGFONT get elfLogFont => addressOf.cast<LOGFONT>().ref;
                                ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1114:29: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
     - 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      String get elfFullName => addressOf
                                ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1120:26: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
     - 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      String get elfStyle => addressOf
                             ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1126:27: Error: The getter 'addressOf' isn't defined for the class 'ENUMLOGFONTEX'.
     - 'ENUMLOGFONTEX' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      String get elfScript => addressOf
                              ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2688:7: Error: The getter 'addressOf' isn't defined for the class 'OSVERSIONINFO'.
     - 'OSVERSIONINFO' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
          addressOf.cast<Uint8>().elementAt(20).cast<Utf16>().unpackString(128);
          ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2699:11: Error: The getter 'addressOf' isn't defined for the class 'OSVERSIONINFO'.
     - 'OSVERSIONINFO' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            ..addressOf.cast<Uint8>().elementAt(20).value = 0;
              ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2744:24: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_DEVICE_INFO'.
     - 'BLUETOOTH_DEVICE_INFO' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      String get szName => addressOf
                           ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2837:7: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
     - 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
          addressOf.cast<Uint8>().elementAt(BTH_MAX_PIN_SIZE).value;
          ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2840:5: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
     - 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        addressOf.cast<Uint8>().elementAt(BTH_MAX_PIN_SIZE).value =
        ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2845:28: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
     - 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
          String.fromCharCodes(addressOf.cast<Uint8>().asTypedList(pinLength));
                               ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2853:7: Error: The getter 'addressOf' isn't defined for the class 'BLUETOOTH_PIN_INFO'.
     - 'BLUETOOTH_PIN_INFO' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
          addressOf.cast<Uint8>().elementAt(idx).value = pinData[idx];
          ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart:38:31: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      final iid = GUID.allocate().addressOf;
                                  ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart:56:33: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      final clsid = GUID.allocate().addressOf;
                                    ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/winrt/winrt_helpers.dart:86:40: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      final riidCalendar = GUID.allocate().addressOf;
                                           ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IDesktopWallpaper.dart:197:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
     - 'COMObject' is from 'package:win32/src/com/combase.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        final ptr = COMObject.allocate().addressOf;
                                         ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IDesktopWallpaper.dart:200:49: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(CLSID_DesktopWallpaper).addressOf,
                                                    ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IDesktopWallpaper.dart:203:48: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(IID_IDesktopWallpaper).addressOf,
                                                   ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IFileOpenDialog.dart:58:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
     - 'COMObject' is from 'package:win32/src/com/combase.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        final ptr = COMObject.allocate().addressOf;
                                         ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IFileOpenDialog.dart:61:47: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(CLSID_FileOpenDialog).addressOf,
                                                  ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IFileOpenDialog.dart:64:46: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(IID_IFileOpenDialog).addressOf,
                                                 ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IFileSaveDialog.dart:99:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
     - 'COMObject' is from 'package:win32/src/com/combase.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        final ptr = COMObject.allocate().addressOf;
                                         ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IFileSaveDialog.dart:102:47: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(CLSID_FileSaveDialog).addressOf,
                                                  ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IFileSaveDialog.dart:105:46: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(IID_IFileSaveDialog).addressOf,
                                                 ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IKnownFolderManager.dart:164:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
     - 'COMObject' is from 'package:win32/src/com/combase.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        final ptr = COMObject.allocate().addressOf;
                                         ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IKnownFolderManager.dart:167:51: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(CLSID_KnownFolderManager).addressOf,
                                                      ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IKnownFolderManager.dart:170:50: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(IID_IKnownFolderManager).addressOf,
                                                     ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/INetworkListManager.dart:128:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
     - 'COMObject' is from 'package:win32/src/com/combase.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        final ptr = COMObject.allocate().addressOf;
                                         ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/INetworkListManager.dart:131:51: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(CLSID_NetworkListManager).addressOf,
                                                      ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/INetworkListManager.dart:134:50: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            GUID.fromString(IID_INetworkListManager).addressOf,
                                                     ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IWbemLocator.dart:82:38: Error: The getter 'addressOf' isn't defined for the class 'COMObject'.
     - 'COMObject' is from 'package:win32/src/com/combase.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/com/combase.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        final ptr = COMObject.allocate().addressOf;
                                         ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IWbemLocator.dart:84:68: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
        final hr = CoCreateInstance(GUID.fromString(CLSID_WbemLocator).addressOf,
                                                                       ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/generated/IWbemLocator.dart:85:64: Error: The getter 'addressOf' isn't defined for the class 'GUID'.
     - 'GUID' is from 'package:win32/src/structs.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
            nullptr, CLSCTX_ALL, GUID.fromString(IID_IWbemLocator).addressOf, ptr);
                                                                   ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf8.dart:63:33: Error: The getter 'addressOf' isn't defined for the class 'Utf8'.
     - 'Utf8' is from 'package:ffi/src/utf8.dart' ('../../flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf8.dart').
    Try correcting the name to the name of an existing getter, or defining a getter or field named 'addressOf'.
      String toString() => fromUtf8(addressOf);
                                    ^^^^^^^^^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/sqlite3-0.1.8/lib/src/ffi/sqlite3.ffi.dart:6:7: Error: Struct 'char' is empty. Empty structs are undefined behavior.
    class char extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/sqlite3-0.1.8/lib/src/ffi/sqlite3.ffi.dart:8:7: Error: Struct 'sqlite3' is empty. Empty structs are undefined behavior.
    class sqlite3 extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/sqlite3-0.1.8/lib/src/ffi/sqlite3.ffi.dart:10:7: Error: Struct 'sqlite3_stmt' is empty. Empty structs are undefined behavior.
    class sqlite3_stmt extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/sqlite3-0.1.8/lib/src/ffi/sqlite3.ffi.dart:12:7: Error: Struct 'sqlite3_value' is empty. Empty structs are undefined behavior.
    class sqlite3_value extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/sqlite3-0.1.8/lib/src/ffi/sqlite3.ffi.dart:14:7: Error: Struct 'sqlite3_context' is empty. Empty structs are undefined behavior.
    class sqlite3_context extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:1111:7: Error: Struct 'ENUMLOGFONTEX' is empty. Empty structs are undefined behavior.
    class ENUMLOGFONTEX extends Struct {
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2835:7: Error: Struct 'BLUETOOTH_PIN_INFO' is empty. Empty structs are undefined behavior.
    class BLUETOOTH_PIN_INFO extends Struct {
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2960:7: Error: Struct 'EXCEPINFO' is empty. Empty structs are undefined behavior.
    class EXCEPINFO extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2966:7: Error: Struct 'PROPERTYKEY' is empty. Empty structs are undefined behavior.
    class PROPERTYKEY extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2973:7: Error: Struct 'PROPVARIANT' is empty. Empty structs are undefined behavior.
    class PROPVARIANT extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2978:7: Error: Struct 'SAFEARRAY' is empty. Empty structs are undefined behavior.
    class SAFEARRAY extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2985:7: Error: Struct 'CLSID' is empty. Empty structs are undefined behavior.
    class CLSID extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2992:7: Error: Struct 'STATSTG' is empty. Empty structs are undefined behavior.
    class STATSTG extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/win32-1.7.4+1/lib/src/structs.dart:2999:7: Error: Struct 'NLM_SIMULATED_PROFILE_INFO' is empty. Empty structs are undefined behavior.
    class NLM_SIMULATED_PROFILE_INFO extends Struct {}
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf8.dart:23:7: Error: Struct 'Utf8' is empty. Empty structs are undefined behavior.
    class Utf8 extends Struct {
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/utf16.dart:16:7: Error: Struct 'Utf16' is empty. Empty structs are undefined behavior.
    class Utf16 extends Struct {
          ^
    ../../flutter/.pub-cache/hosted/pub.dartlang.org/ffi-0.1.3/lib/src/allocation.dart:47:33: Error: Expected type 'T' to be a valid and instantiated subtype of 'NativeType'.
      final int totalSize = count * sizeOf<T>();
                                    ^

    Command PhaseScriptExecution failed with a nonzero exit code
    note: Using new build system
    note: Building targets in parallel
    note: Planning build
    note: Constructing build description

Could not build the precompiled application for the device.

Does anyone has idea about this error? Thank you