add namespace to compatible with gradle 8 by tgarm · Pull Request #3 · diantahoc/flutter_pos_printer_platform

tgarm · 2024-08-14T13:36:39Z

When compile with Flutter 3.24, it requires higher Gradle version.
This patch added namespace that is required by Gradle 8

nihal-mentor · 2024-09-06T14:04:32Z

Failed to handle method call
java.lang.NullPointerException
at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.checkPermissions(FlutterPosPrinterPlatformPlugin.kt:389)
at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.verifyIsBluetoothIsOn(FlutterPosPrinterPlatformPlugin.kt:311)
at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.onMethodCall(FlutterPosPrinterPlatformPlugin.kt:215)
at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:267)
at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:292)
at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319)
at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
at android.os.Handler.handleCallback(Handler.java:958)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loopOnce(Looper.java:257)
at android.os.Looper.loop(Looper.java:368)
at android.app.ActivityThread.main(ActivityThread.java:8839)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:572)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)

harshchovatiya15 · 2024-09-23T09:50:56Z

USB printing not working in android when update android targetSdkVersion 33 to 34

So any have solution?

tgarm · 2024-09-24T03:27:41Z

USB printing not working in android when update android targetSdkVersion 33 to 34

So any have solution?

We are using Android targetSdkVersion 34 and it seems working. Would you describe the issue in more detail?

tgarm · 2024-09-24T03:28:32Z

Failed to handle method call java.lang.NullPointerException at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.checkPermissions(FlutterPosPrinterPlatformPlugin.kt:389) at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.verifyIsBluetoothIsOn(FlutterPosPrinterPlatformPlugin.kt:311) at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.onMethodCall(FlutterPosPrinterPlatformPlugin.kt:215) at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:267) at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:292) at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:319) at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12) at android.os.Handler.handleCallback(Handler.java:958) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loopOnce(Looper.java:257) at android.os.Looper.loop(Looper.java:368) at android.app.ActivityThread.main(ActivityThread.java:8839) at java.lang.reflect.Method.invoke(Native Method) at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:572) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)

This issue exists from the original code and we are trying to fix. Please check if it still exists in current update.

harshchovatiya15 · 2024-09-24T04:00:41Z

USB printing not working in android when update android targetSdkVersion 33 to 34
So any have solution?

We are using Android targetSdkVersion 34 and it seems working. Would you describe the issue in more detail?

I got this type error when printing using USB in targetSdkVersion 34 but It work fine targetSdkVersion 33

ESC POS Printer(10201): Request for device: vendor_id: 1110, product_id: 2056
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): Failed to handle method call
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.PendingIntent.send(android.content.Context, int, android.content.Intent)' on a null object reference
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.os.Parcel.createExceptionOrNull(Parcel.java:3093)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.os.Parcel.createException(Parcel.java:3071)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.os.Parcel.readException(Parcel.java:3054)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.os.Parcel.readException(Parcel.java:2996)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.hardware.usb.IUsbManager$Stub$Proxy.requestDevicePermission(IUsbManager.java:1318)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.hardware.usb.UsbManager.requestPermission(UsbManager.java:1080)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at com.sersoluciones.flutter_pos_printer_platform.usb.USBPrinterService.selectDevice(USBPrinterService.kt:114)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.connectPrinter(FlutterPosPrinterPlatformPlugin.kt:337)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.onMethodCall(FlutterPosPrinterPlatformPlugin.kt:278)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:258)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)

E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.app.ActivityThread.main(ActivityThread.java:8839)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:572)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1049)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): Caused by: android.os.RemoteException: Remote stack trace:
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at com.android.server.usb.UsbUserPermissionManager.requestPermission(UsbUserPermissionManager.java:725)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at com.android.server.usb.UsbService.requestDevicePermission(UsbService.java:549)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.hardware.usb.IUsbManager$Stub.onTransact(IUsbManager.java:684)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.os.Binder.execTransactInternal(Binder.java:1387)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201): at android.os.Binder.execTransact(Binder.java:1299)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform(10201):
V/ESC POS Printer(10201): Printing bytes
E/ESC POS Printer(10201): USB Device is not initialized
V/ESC POS Printer(10201): Failed to connected to device

tgarm · 2024-09-30T04:09:57Z

Still unable to re-produce.

BLACKCAT25896 · 2024-10-27T04:13:34Z

Can you please update the project in the latest version? Its error for namespace issue

alphawizzflutterteam · 2024-10-29T11:05:30Z

facing this issue in Android 14 not below 13 it is working fine.

E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): Failed to handle method call
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): java.lang.NullPointerException
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.checkPermissions(FlutterPosPrinterPlatformPlugin.kt:384)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.verifyIsBluetoothIsOn(FlutterPosPrinterPlatformPlugin.kt:306)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.onMethodCall(FlutterPosPrinterPlatformPlugin.kt:212)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:267)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:322)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at android.os.Handler.handleCallback(Handler.java:958)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at android.os.Handler.dispatchMessage(Handler.java:99)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at android.os.Looper.loopOnce(Looper.java:224)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at android.os.Looper.loop(Looper.java:318)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at android.app.ActivityThread.main(ActivityThread.java:8727)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at java.lang.reflect.Method.invoke(Native Method)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:561)
E/MethodChannel#com.sersoluciones.flutter_pos_printer_platform( 6657): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1013)
E/flutter ( 6657): [ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled Exception: PlatformException(error, null, null, java.lang.NullPointerException
E/flutter ( 6657): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.checkPermissions(FlutterPosPrinterPlatformPlugin.kt:384)
E/flutter ( 6657): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.verifyIsBluetoothIsOn(FlutterPosPrinterPlatformPlugin.kt:306)
E/flutter ( 6657): at com.sersoluciones.flutter_pos_printer_platform.FlutterPosPrinterPlatformPlugin.onMethodCall(FlutterPosPrinterPlatformPlugin.kt:212)
E/flutter ( 6657): at io.flutter.plugin.common.MethodChannel$IncomingMethodCallHandler.onMessage(MethodChannel.java:267)
E/flutter ( 6657): at io.flutter.embedding.engine.dart.DartMessenger.invokeHandler(DartMessenger.java:295)
E/flutter ( 6657): at io.flutter.embedding.engine.dart.DartMessenger.lambda$dispatchMessageToQueue$0$io-flutter-embedding-engine-dart-DartMessenger(DartMessenger.java:322)
E/flutter ( 6657): at io.flutter.embedding.engine.dart.DartMessenger$$ExternalSyntheticLambda0.run(Unknown Source:12)
E/flutter ( 6657): at android.os.Handler.handleCallback(Handler.java:958)
E/flutter ( 6657): at android.os.Handler.dispatchMessage(Handler.java:99)
E/flutter ( 6657): at android.os.Looper.loopOnce(Looper.java:224)
E/flutter ( 6657): at android.os.Looper.loop(Looper.java:318)
E/flutter ( 6657): at android.app.ActivityThread.main(ActivityThread.java:8727)
E/flutter ( 6657): at java.lang.reflect.Method.invoke(Native Method)
E/flutter ( 6657): at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:561)
E/flutter ( 6657): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1013)
E/flutter ( 6657): )
E/flutter ( 6657): #0 StandardMethodCodec.decodeEnvelope (package:flutter/src/services/message_codecs.dart:651:7)
E/flutter ( 6657): #1 MethodChannel._invokeMethod (package:flutter/src/services/platform_channel.dart:322:18)
E/flutter ( 6657):

diantahoc · 2024-12-06T11:00:01Z

Hello guys I have fixed several issues for Android 14+, one issue that you solved related to lateinit, onAttachedToActivity was not being called due to a change in flutter, now it is properly called.

Additionally, a fix for the USB service PendingIntent was added in the lasted 1.2.2 that caused crashes also.

I will review the remaining changes, and may or may not close this pull request If I apply your changes manually.

Thank you all for your contributions.

nirmal-kc · 2024-12-28T13:59:52Z

Hi, I am facing multiple issues on Android, both bluetooth and USB. The application crashes with trying to connect to USB printer. Also, when we try to print the ticket on a bluetooth printer, nothing gets printed(Printer connection works fine, but nothing gets printed). The same however, works fine on IOS/Windows. I am using the same code as that in example. Find below the output from flutter doctor.

[✓] Flutter (Channel stable, 3.24.3, on macOS 15.1.1 24B91 darwin-arm64, locale en-IN)
[!] Android toolchain - develop for Android devices (Android SDK version 35.0.0)
    ✗ cmdline-tools component is missing
      Run `path/to/sdkmanager --install "cmdline-tools;latest"`
      See https://developer.android.com/studio/command-line for more details.
    ✗ Android license status unknown.
      Run `flutter doctor --android-licenses` to accept the SDK licenses.
      See https://flutter.dev/to/macos-android-setup for more details.
[✓] Xcode - develop for iOS and macOS (Xcode 16.2)
[✓] Chrome - develop for the web
[✓] Android Studio (version 2024.1)
[✓] VS Code (version 1.96.2)
[✓] Connected device (2 available)
    ! Error: Browsing on the local area network for Apple 14ProMax. Ensure the device is unlocked and attached with a cable or associated with the same local area
      network as this Mac.
      The device must be opted into Developer Mode to connect wirelessly. (code -27)
[✓] Network resources

dxl and others added 3 commits August 14, 2024 21:34

add namespace to compatible with gradle 8

72a6e42

reduce bluetooth exceptions

e6b2991

init bluetooth handler early, should solve the exception

66e7cea

dxl added 6 commits September 19, 2024 13:10

return result for usb printer

a19527a

fix typo

a81669b

add logger with bugfender

36c0d1c

fix typo

773eb16

fix typo

4b8a34c

add bf logging

9163541

remove bugfender loggings

7033fd6

Provide feedback

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add namespace to compatible with gradle 8#3

add namespace to compatible with gradle 8#3
tgarm wants to merge 10 commits into
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tgarm commented Aug 14, 2024

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nihal-mentor commented Sep 6, 2024

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harshchovatiya15 commented Sep 23, 2024

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tgarm commented Sep 24, 2024

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harshchovatiya15 commented Sep 24, 2024 •

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tgarm commented Sep 30, 2024

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BLACKCAT25896 commented Oct 27, 2024

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alphawizzflutterteam commented Oct 29, 2024

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diantahoc commented Dec 6, 2024

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tgarm commented Aug 14, 2024

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harshchovatiya15 commented Sep 24, 2024 •

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