wu9007 / pda_scanner Goto Github PK

Steps to Reproduce

Logs

之前的版本很好用，但是flutter2.0以后，需要支持null safety，请升级一下吧，非常感谢

class _MainPageState extends State with PdaListenerMixin {
var _code;
@OverRide
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(),
body: Container(
child: TextField(
focusNode: new FocusNode(),
onEditingComplete: () {
print("回车");
},
onSubmitted: (value) {
print("值：" + value);
},
),
),
);
}

@OverRide
void onEvent(Object event) {
print(event);
}

@OverRide
void onError(Object error) {
print(error);
}
}

Steps to Reproduce

1.当我首次初始化pda_scanner的时候，用扫码枪扫描是可以得到条码的信息的，但是当我离开页面的时候再次进入 扫描就没有反应了
import 'package:flutter/material.dart';
import 'package:pda_scanner/pda_source.dart';
import 'package:pda_scanner/pda_listener_mixin.dart';

class PdaScan extends StatefulWidget {
@OverRide
_PdaScanState createState() => _PdaScanState();
}

class _PdaScanState extends State with PdaListenerMixin {
var _code;
var _error;
@OverRide
void initState() {
print('init');
PdaSource.init();
super.initState();
}
@OverRide
void dispose() {
print('dispose');
PdaSource.dispose();
super.dispose();
}
@OverRide
Widget build(BuildContext context) {
return Scaffold(
body: Container(
child: Center(
child: Text('$_code'),
)
),
);
}
@OverRide
void onEvent(Object code) {
// TODO: implement onEvent
setState(() {
_code=code;
});
}
@OverRide
void onError(Object error) {
// TODO: implement onError
print(error);
setState(() {
_error=error;
});
}
}

Logs

第一次在释放生命周期的时候会提示 PdaScannerPlugin:onCancel;
I/PdaScannerPlugin( 4629): PdaScannerPlugin:onCancel

It needs to support null security, please update it, thank you very much

Hi, I have imported the pda_listener.dar & pda_source.dart files, but when I run mi application in debug mode and use print() sentences in order to track the execution order, the onEvent event is not triggered.

After to finish the execution, the next message appears:
I/PdaScannerPlugin(17438): PdaScannerPlugin:onCancel

Also I have test with the example posted in git with the same results.

I'm working with a Honeywell - EDA50 - SO Android 7.1.1 device.

Do I need to configure something particular in the device or do you think that I missing something?

Hi,
I am trying the example project on Urovo DT50, the app started without problems but onEvent and onError isn't triggered when I scan any barcode.

Hello,
I am just trying the example project on Honeywell CT60 , the app started without problems but onEvent and onError isn't triggered when I scan any barcode

Steps to Reproduce

Logs

Flutter：2.2.2
Dart 2.13.3
pda_scanner: ^0.2.9

Steps to Reproduce

Logs

Launching lib\main.dart on PDT 90P in debug mode...
lib\main.dart:1
√ Built build\app\outputs\flutter-apk\app-debug.apk.
Connecting to VM Service at ws://127.0.0.1:51123/JgsC93lg0fE=/ws
D/AndroidRuntime(21619): Shutting down VM
E/AndroidRuntime(21619): FATAL EXCEPTION: main
E/AndroidRuntime(21619): Process: com.example.ys_pda, PID: 21619
E/AndroidRuntime(21619): java.lang.RuntimeException: Error receiving broadcast Intent { act=com.android.server.scannerservice.broadcast flg=0x10 (has extras) } in com.shinow.pda_scanner.PdaScannerPlugin$1@3aeda31f
E/AndroidRuntime(21619): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:876)
E/AndroidRuntime(21619): at android.os.Handler.handleCallback(Handler.java:739)
E/AndroidRuntime(21619): at android.os.Handler.dispatchMessage(Handler.java:95)
E/AndroidRuntime(21619): at android.os.Looper.loop(Looper.java:135)
E/AndroidRuntime(21619): at android.app.ActivityThread.main(ActivityThread.java:5254)
E/AndroidRuntime(21619): at java.lang.reflect.Method.invoke(Native Method)
E/AndroidRuntime(21619): at java.lang.reflect.Method.invoke(Method.java:372)
E/AndroidRuntime(21619): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:902)
E/AndroidRuntime(21619): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:697)
E/AndroidRuntime(21619): Caused by: java.lang.NullPointerException: Attempt to invoke interface method 'void io.flutter.plugin.common.EventChannel$EventSink.success(java.lang.Object)' on a null object reference
E/AndroidRuntime(21619): at com.shinow.pda_scanner.PdaScannerPlugin$1.onReceive(PdaScannerPlugin.java:30)
E/AndroidRuntime(21619): at android.app.LoadedApk$ReceiverDispatcher$Args.run(LoadedApk.java:866)
E/AndroidRuntime(21619): ... 8 more
I/Process (21619): Sending signal. PID: 21619 SIG: 9
Lost connection to device.
Exited (sigterm)

遇到以下的问题。可能必须升级？

The plugin `flutter_pda_scanner` uses a deprecated version of the Android embedding.
To avoid unexpected runtime failures, or future build failures, try to see if this plugin supports the Android V2 embedding. Otherwise, consider removing it since a future release of Flutter will remove these deprecated APIs.
If you are plugin author, take a look at the docs for migrating the plugin to the V2 embedding: [https://flutter.dev/go/android-plugin-migration]().

Steps to Reproduce

Logs