포인트 모바일 MAUI 샘플 PM90 스캐너 Intent 연동 C#

MAUI 프로젝트중 산업용스캐너의 스캐너입력값을 키보드 웨지 wedge 방식 엔터값 기반으로 된 프로그램을 Intent 브로드캐스트 방식으로 변경하는코드

 

 

1. Emkit - Intent 설정 

 

ScanSettings => Result type => Intent Broadcast

 

 

 

 

2.  adb 이벤트 확인  스캔이벤트 확인

adb -s 기기ID logcat  ActivityManager | findstr "EVENT"

 

3. BroadcastReceiver 상속 구현

 

 [BroadcastReceiver(Enabled = true, Exported = true)]
 public class ScannerBroadcastReceiver : BroadcastReceiver
 {
     public override void OnReceive(Context context, Intent intent)
     {
         string action = intent.Action;

         // 스캔 데이터 처리 

         if (action == "device.scanner.EVENT")
         {
             //byte[] decodeValue = intent.GetByteArrayExtra("EXTRA_EVENT_DECODE_VALUE");
             //string decodeStringValue = intent.GetStringExtra("EXTRA_EVENT_DECODE_STRING_VALUE");
             //int decodeLength = intent.GetIntExtra("EXTRA_EVENT_DECODE_LENGTH", -1);
             //string decodeLetter = intent.GetStringExtra("EXTRA_EVENT_DECODE_LETTER");
             //string decodeModifier = intent.GetStringExtra("EXTRA_EVENT_DECODE_MODIFIER");
             //long decodeTime = intent.GetLongExtra("EXTRA_EVENT_DECODE_TIME", -1);
             //string symbolName = intent.GetStringExtra("EXTRA_EVENT_SYMBOL_NAME");
             //int symbolId = intent.GetIntExtra("EXTRA_EVENT_SYMBOL_ID", -1);
             //string symbolType = intent.GetStringExtra("EXTRA_EVENT_SYMBOL_TYPE");
             //string source = intent.GetStringExtra("EXTRA_EVENT_SOURCE");
             bool decodeResult = intent.GetBooleanExtra("EXTRA_EVENT_DECODE_RESULT", false);
             if (decodeResult)
             {
                 string scanData = Encoding.UTF8.GetString(intent.GetByteArrayExtra("EXTRA_EVENT_DECODE_VALUE"));
                 string barcodeType = intent.GetStringExtra("EXTRA_EVENT_SYMBOL_NAME");
                 StrongReferenceMessenger.Default.Send(new ScannerEventMessage(scanData, barcodeType));
             } 
         }  
     }
 }

 public class ScannerEventMessage
 {
     public string Data { get; }
     public string BarcodeType { get; }

     public ScannerEventMessage(string data, string barcodeType)
     {
         Data = data;
         BarcodeType = barcodeType;
     }
 }

 

4. MainActivity Intent 등록

 

ScannerBroadcastReceiver scannerBroadcastReceiver;

protected override void OnCreate(Bundle savedInstanceState)
{
    base.OnCreate(savedInstanceState);
 
    var currnet = (AppShell)Microsoft.Maui.Controls.Application.Current.MainPage;
 
    PDA001_Login = currnet.CurrentPage as PDA001_Login;
 
    scannerBroadcastReceiver = new ScannerBroadcastReceiver(); 
    RegisterReceiver(scannerBroadcastReceiver, new IntentFilter("device.scanner.EVENT"));
   

}

rotected override void OnDestroy()
{
    base.OnDestroy();


    if (scannerBroadcastReceiver != null)
    {
        UnregisterReceiver(scannerBroadcastReceiver);
        scannerBroadcastReceiver.Dispose();
        scannerBroadcastReceiver = null;
    }
 }

 

 

 

 

5. ContentPage 구독및 해제 구현

    protected override async void OnAppearing()
    {
        base.OnAppearing();
 
 
        StrongReferenceMessenger.Default.Unregister<ScannerEventMessage>(this);

        StrongReferenceMessenger.Default.Register<ScannerEventMessage>(this, (recipient, message) =>
        { 
            DisplayAlert("Scan Event", message.Data, "OK");   
        }); 


    }

    protected override void OnDisappearing()
    {
        base.OnDisappearing();
 
        StrongReferenceMessenger.Default.Unregister<UsbDeviceAttachedMessage>(this);
        StrongReferenceMessenger.Default.Unregister<ScannerEventMessage>(this); 
       
    }