已允许App使用USB打印机，但是打印时Error:
E/flutter ( 5393): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(-1, usb 设备无法匹配, usb 设备无法匹配, null)
E/flutter ( 5393): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:651:7)
E/flutter ( 5393): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
E/flutter ( 5393):
E/flutter ( 5393): #2 MethodChannelAndroidUsbPrinter.writeBytes. (package:android_usb_printer/src/android_usb_printer_method_channel.dart:89:15)
E/flutter ( 5393):
E/flutter ( 5393): #3 UsbConn.writeMultiBytes (package:flutter_printer_plus/src/io/usb_conn.dart:20:27)
E/flutter ( 5393):
E/flutter ( 5393):
已允许App使用USB打印机，但是打印时Error:
E/flutter ( 5393): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(-1, usb 设备无法匹配, usb 设备无法匹配, null)
E/flutter ( 5393): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:651:7)
E/flutter ( 5393): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:334:18)
E/flutter ( 5393):
E/flutter ( 5393): #2 MethodChannelAndroidUsbPrinter.writeBytes. (package:android_usb_printer/src/android_usb_printer_method_channel.dart:89:15)
E/flutter ( 5393):
E/flutter ( 5393): #3 UsbConn.writeMultiBytes (package:flutter_printer_plus/src/io/usb_conn.dart:20:27)
E/flutter ( 5393):
E/flutter ( 5393):