write might no be found for low price printer

.gitignore

@@ -11,3 +11,10 @@ build/
 *.ipr
 *.iws
 .idea/
+example/ios/Podfile.lock
+example/ios/Runner.xcodeproj/project.pbxproj
+example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme
+example/macos/Podfile
+example/macos/Flutter/GeneratedPluginRegistrant.swift
+example/macos/Flutter/ephemeral/flutter_export_environment.sh
+example/macos/Flutter/ephemeral/Flutter-Generated.xcconfig

example/ios/Podfile.lock

@@ -4,19 +4,19 @@ PODS:
   - blue_thermal_printer (0.0.1):
     - Flutter
   - Flutter (1.0.0)
-  - flutter_blue (0.0.1):
+  - flutter_blue_plus (0.0.1):
     - Flutter
-    - flutter_blue/Protos (= 0.0.1)
-  - flutter_blue/Protos (0.0.1):
+    - flutter_blue_plus/Protos (= 0.0.1)
+  - flutter_blue_plus/Protos (0.0.1):
     - Flutter
-    - Protobuf (~> 3.11.4)
-  - Protobuf (3.11.4)
+    - Protobuf (~> 3.11)
+  - Protobuf (3.20.0)
 
 DEPENDENCIES:
   - blue_print_pos (from `.symlinks/plugins/blue_print_pos/ios`)
   - blue_thermal_printer (from `.symlinks/plugins/blue_thermal_printer/ios`)
   - Flutter (from `Flutter`)
-  - flutter_blue (from `.symlinks/plugins/flutter_blue/ios`)
+  - flutter_blue_plus (from `.symlinks/plugins/flutter_blue_plus/ios`)
 
 SPEC REPOS:
   trunk:
@@ -29,16 +29,16 @@ EXTERNAL SOURCES:
     :path: ".symlinks/plugins/blue_thermal_printer/ios"
   Flutter:
     :path: Flutter
-  flutter_blue:
-    :path: ".symlinks/plugins/flutter_blue/ios"
+  flutter_blue_plus:
+    :path: ".symlinks/plugins/flutter_blue_plus/ios"
 
 SPEC CHECKSUMS:
   blue_print_pos: 23e8b4bede0fc07cd75b3257783523ca332bf3cb
-  blue_thermal_printer: e0f989c1ba2cae289f6472ebae0a22611958f2bc
+  blue_thermal_printer: c83405103d2c17f8d67aaa43fcff94df5d616a66
   Flutter: 50d75fe2f02b26cc09d224853bb45737f8b3214a
-  flutter_blue: eeb381dc4727a0954dede73515f683865494b370
-  Protobuf: 176220c526ad8bd09ab1fb40a978eac3fef665f7
+  flutter_blue_plus: 6787777145d615de01828f3a9fa423c3c702f0b3
+  Protobuf: 66e2f3b26a35e4cc379831f4ced538274ee4b923
 
 PODFILE CHECKSUM: 7368163408c647b7eb699d0d788ba6718e18fb8d
 
-COCOAPODS: 1.10.2
+COCOAPODS: 1.11.3

example/ios/Runner.xcodeproj/project.pbxproj

@@ -155,7 +155,7 @@
 		97C146E61CF9000F007C117D /* Project object */ = {
 			isa = PBXProject;
 			attributes = {
-				LastUpgradeCheck = 1020;
+				LastUpgradeCheck = 1300;
 				ORGANIZATIONNAME = "";
 				TargetAttributes = {
 					97C146ED1CF9000F007C117D = {
@@ -355,7 +355,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = 7NJGVJU8ZS;
+				DEVELOPMENT_TEAM = ZZ8H72CP6T;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -484,7 +484,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = 7NJGVJU8ZS;
+				DEVELOPMENT_TEAM = ZZ8H72CP6T;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (
@@ -507,7 +507,7 @@
 				ASSETCATALOG_COMPILER_APPICON_NAME = AppIcon;
 				CLANG_ENABLE_MODULES = YES;
 				CURRENT_PROJECT_VERSION = "$(FLUTTER_BUILD_NUMBER)";
-				DEVELOPMENT_TEAM = 7NJGVJU8ZS;
+				DEVELOPMENT_TEAM = ZZ8H72CP6T;
 				ENABLE_BITCODE = NO;
 				INFOPLIST_FILE = Runner/Info.plist;
 				LD_RUNPATH_SEARCH_PATHS = (

example/ios/Runner.xcodeproj/xcshareddata/xcschemes/Runner.xcscheme

@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <Scheme
-   LastUpgradeVersion = "1020"
+   LastUpgradeVersion = "1300"
    version = "1.3">
    <BuildAction
       parallelizeBuildables = "YES"

lib/blue_print_pos.dart

@@ -14,9 +14,11 @@ import 'package:flutter_blue_plus/gen/flutterblueplus.pb.dart' as proto;
 import 'package:image/image.dart' as img;
 import 'package:qr_flutter/qr_flutter.dart';
 
+//export 'package:blue_thermal_printer/blue_thermal_printer.dart';
+
 class BluePrintPos {
   BluePrintPos._() {
-    _bluetoothAndroid = blue_thermal.BlueThermalPrinter.instance;
+    bluetoothAndroid = blue_thermal.BlueThermalPrinter.instance;
     _bluetoothIOS = flutter_blue.FlutterBluePlus.instance;
   }
 
@@ -25,7 +27,7 @@ class BluePrintPos {
   static const MethodChannel _channel = MethodChannel('blue_print_pos');
 
   /// This field is library to handle in Android Platform
-  blue_thermal.BlueThermalPrinter? _bluetoothAndroid;
+  blue_thermal.BlueThermalPrinter? bluetoothAndroid;
 
   /// This field is library to handle in iOS Platform
   flutter_blue.FlutterBluePlus? _bluetoothIOS;
@@ -61,7 +63,7 @@ class BluePrintPos {
         final blue_thermal.BluetoothDevice bluetoothDeviceAndroid =
             blue_thermal.BluetoothDevice(
                 selectedDevice?.name ?? '', selectedDevice?.address ?? '');
-        await _bluetoothAndroid?.connect(bluetoothDeviceAndroid);
+        await bluetoothAndroid?.connect(bluetoothDeviceAndroid);
       } else if (Platform.isIOS) {
         _bluetoothDeviceIOS = flutter_blue.BluetoothDevice.fromProto(
           proto.BluetoothDevice(
@@ -98,8 +100,8 @@ class BluePrintPos {
     Duration timeout = const Duration(seconds: 5),
   }) async {
     if (Platform.isAndroid) {
-      if (await _bluetoothAndroid?.isConnected ?? false) {
-        await _bluetoothAndroid?.disconnect();
+      if (await bluetoothAndroid?.isConnected ?? false) {
+        await bluetoothAndroid?.disconnect();
       }
       _isConnected = false;
     } else if (Platform.isIOS) {
@@ -191,7 +193,7 @@ class BluePrintPos {
         await connect(selectedDevice!);
       }
       if (Platform.isAndroid) {
-        _bluetoothAndroid?.writeBytes(Uint8List.fromList(byteBuffer));
+        bluetoothAndroid?.writeBytes(Uint8List.fromList(byteBuffer));
       } else if (Platform.isIOS) {
         final List<flutter_blue.BluetoothService> bluetoothServices =
             await _bluetoothDeviceIOS?.discoverServices() ??
@@ -202,9 +204,14 @@ class BluePrintPos {
         );
         final flutter_blue.BluetoothCharacteristic characteristic =
             bluetoothService.characteristics.firstWhere(
-          (flutter_blue.BluetoothCharacteristic bluetoothCharacteristic) =>
-              bluetoothCharacteristic.properties.write,
-        );
+                (flutter_blue.BluetoothCharacteristic bluetoothCharacteristic) {
+          // write might no be found for low price printer
+          if (bluetoothCharacteristic.properties.write) {
+            return bluetoothCharacteristic.properties.write;
+          } else {
+            return bluetoothCharacteristic.properties.writeWithoutResponse;
+          }
+        });
         await characteristic.write(byteBuffer, withoutResponse: true);
       }
     } on Exception catch (error) {