Java Question Citzizen CMP-20 library doesen't work

NeverGiveUp2 · May 16, 2013

Hi,
this is my first question. This forum is very good and i solve very much first problems.

I need a library for the mobile Bluetooth-Printer Citizen CMP-20. In native code it was no problem print the samples. Now i can build the library but the printer doesen't print the sample. I can print a single line with the class AsyncStreamsText from Erel. So i think i can only print with a asyncon Task.
But i haven't any idee.

For my Tests, i use the Bluetooth-Sample-Code. I made some changes.

Main

B4X:

#Region Module Attributes
   #FullScreen: False
   #IncludeTitle: True
   #ApplicationLabel: Bluetooth Example
   #VersionCode: 1
   #VersionName: 
   #SupportedOrientations: unspecified
   #CanInstallToExternalStorage: False
#End Region

'Activity module
Sub Process_Globals
   Dim admin As BluetoothAdmin
   Dim serial1 As CitizenBtPort
   Dim foundDevices As List
   Type NameAndMac (Name As String, Mac As String)
   Dim connectedDevice As NameAndMac
End Sub

Sub Globals
   Dim btnSearchForDevices As Button
   Dim btnAllowConnection As Button
End Sub

Sub Activity_Create(FirstTime As Boolean)
   If FirstTime Then
      admin.Initialize("admin")
      serial1.Bluetoothportinit
   End If
   Activity.LoadLayout("1")
End Sub

Sub Activity_Resume
   btnSearchForDevices.Enabled = False
   btnAllowConnection.Enabled = False
   If admin.IsEnabled = False Then
      If admin.Enable = False Then 
         ToastMessageShow("Error enabling Bluetooth adapter.", True)
      Else
         ToastMessageShow("Enabling Bluetooth adapter...", False)
         'the StateChanged event will be soon raised
      End If
   Else
      Admin_StateChanged(admin.STATE_ON, 0)
   End If
End Sub

Sub Admin_StateChanged (NewState As Int, OldState As Int)
   btnSearchForDevices.Enabled = (NewState = admin.STATE_ON)
   btnAllowConnection.Enabled = btnSearchForDevices.Enabled
End Sub

Sub Activity_Pause (UserClosed As Boolean)
   If UserClosed = True Then
      serial1.Disconnect
   End If
End Sub

Sub btnSearchForDevices_Click
   foundDevices.Initialize
   If admin.StartDiscovery   = False Then 
      ToastMessageShow("Error starting discovery process.", True)
   Else
      ProgressDialogShow("Searching for devices...")
   End If
End Sub

Sub Admin_DiscoveryFinished
   ProgressDialogHide
   If foundDevices.Size = 0 Then
      ToastMessageShow("No device found.", True)
   Else
      Dim l As List
      l.Initialize
      For i = 0 To foundDevices.Size - 1
         Dim nm As NameAndMac
         nm = foundDevices.Get(i)
         l.Add(nm.Name)
      Next
      Dim res As Int
      res = InputList(l, "Choose device to connect", -1)
      If res <> DialogResponse.CANCEL Then
         connectedDevice = foundDevices.Get(res)
         ProgressDialogShow("Trying to connect to: " & connectedDevice.Name & " (" & connectedDevice.Mac & ")")
         serial1.ConnectAdress(connectedDevice.Mac)
         Serial1_Connected(serial1.IsConnected)
      End If
   End If
End Sub

Sub Admin_DeviceFound (Name As String, MacAddress As String)
   Log(Name & ":" & MacAddress)
   Dim nm As NameAndMac
   nm.Name = Name
   nm.Mac = MacAddress
   foundDevices.Add(nm)
   ProgressDialogShow("Searching for devices (~ device found)...".Replace("~", foundDevices.Size))
End Sub

Sub btnAllowConnection_Click
   'this intent makes the device discoverable for 300 seconds.
   Dim i As Intent
   i.Initialize("android.bluetooth.adapter.action.REQUEST_DISCOVERABLE", "")
   i.PutExtra("android.bluetooth.adapter.extra.DISCOVERABLE_DURATION", 300)
   StartActivity(i)
   
   'serial1.Listen
End Sub

Sub Serial1_Connected (Success As Boolean)
   ProgressDialogHide
   Log("connected: " & Success)
   If Success = False Then
      Log(LastException.Message)
      ToastMessageShow("Error connecting: " & LastException.Message, True)
   Else
      StartActivity(PrnActivity)
   End If
End Sub

PrnActivity

B4X:

#Region Module Attributes
   #FullScreen: False
   #IncludeTitle: True
#End Region

'Activity module
Sub Process_Globals
   Private CMP20 As CitizenESCP
   Private ast As AsyncStreamsText
   Private serial2 As CitizenBtPort
End Sub

Sub Globals
   Dim txtInput As EditText
   Dim txtLog As EditText
   Dim btnSend As Button
End Sub

Sub Activity_Create(FirstTime As Boolean)
   Activity.LoadLayout("2")
   Activity.Title = "Citizen CMP-20 Activity"
   serial2 =  Main.serial1
   If ast.IsInitialized = False Then
      ast.Initialize(Me, "ast", serial2.GetInputStream, serial2.GetOutputStream) 
      
   End If
   txtLog.Width = 100%x
End Sub


Sub ast_Error
   ToastMessageShow("Connection is broken.", True)
   btnSend.Enabled = False
   txtInput.Enabled = False
End Sub


Sub Activity_Resume
   
End Sub

Sub Activity_Pause (UserClosed As Boolean)
   If UserClosed Then
      ast.Close
   End If
End Sub

Sub txtInput_EnterPressed
   If btnSend.Enabled = True Then btnSend_Click
End Sub
Sub btnSend_Click
   ast.Write(CMP20.OneRow("Dies ist ein Test..."))
   Prn_test2
   'txtInput.SelectAll
   'txtInput.RequestFocus
   LogMessage("Me", "Drucken...")
End Sub

Sub LogMessage(From As String, Msg As String)
   txtLog.Text = txtLog.Text & From & ": " & Msg & CRLF
   txtLog.SelectionStart = txtLog.Text.Length
End Sub
Sub Prn_test2
   CMP20.barcode2DTest
End Sub
Sub ast_NewText(Text As String)    
   Log("Text: " & Text)    
   Log(Text.Length)
End Sub
Sub ast_Terminated    
   Log("Connection terminated")
End Sub

Library CitizenESCP

B4X:

package com.mcdreck;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import android.util.Log;
import anywheresoftware.b4a.BA;
import anywheresoftware.b4a.BA.Author;
import anywheresoftware.b4a.BA.DependsOn;
import anywheresoftware.b4a.BA.Permissions;
import anywheresoftware.b4a.BA.ShortName;
import anywheresoftware.b4a.BA.Version;

import com.citizen.jpos.command.ESCPOS;
import com.citizen.jpos.command.ESCPOSConst;
import com.citizen.jpos.printer.CMPPrint;
import com.citizen.jpos.printer.ESCPOSPrinter;

@Permissions(values = {"android.permission.BLUETOOTH", "android.permission.BLUETOOTH_ADMIN"}) 
@DependsOn(values={ "Citizen_Android_1056" })
 
 @Author("Roland Nyga") 
 
 
@Version((float) 1.08)
@ShortName("CitizenESCP")

public class CitizenESCP {
   
   
   public int CMP_ALIGNMENT_LEFT    = CMPPrint.CMP_ALIGNMENT_LEFT;
   public int CMP_ALIGNMENT_CENTER   = CMPPrint.CMP_ALIGNMENT_CENTER;
   public int CMP_ALIGNMENT_RIGHT   = CMPPrint.CMP_ALIGNMENT_RIGHT;
   public int CMP_FNT_DEFAULT      = CMPPrint.CMP_FNT_DEFAULT;
   public int CMP_FNT_FONTB      = CMPPrint.CMP_FNT_FONTB;
   public int CMP_FNT_BOLD         = CMPPrint.CMP_FNT_BOLD;
   public int CMP_FNT_UNDERLINE   = CMPPrint.CMP_FNT_UNDERLINE;
   public int CMP_BCS_UPCA1       = CMPPrint.CMP_BCS_UPCA;
   public int CMP_BCS_UPCE1       = CMPPrint.CMP_BCS_UPCE;
   public int CMP_BCS_EAN8       = CMPPrint.CMP_BCS_EAN8;
   public int CMP_BCS_EAN13      = CMPPrint.CMP_BCS_EAN13;
   public int CMP_BCS_JAN8         = CMPPrint.CMP_BCS_JAN8;
   public int CMP_BCS_JAN13      = CMPPrint.CMP_BCS_JAN13;
   public int CMP_BCS_ITF         = CMPPrint.CMP_BCS_ITF;
   public int CMP_BCS_Codabar      = CMPPrint.CMP_BCS_Codabar;
   public int CMP_BCS_Code39      = CMPPrint.CMP_BCS_Code39;
   public int CMP_BCS_Code93      = CMPPrint.CMP_BCS_Code93;
   public int CMP_BCS_Code128      = CMPPrint.CMP_BCS_Code128;
   public int CMP_TXT_1WIDTH      = CMPPrint.CMP_TXT_1WIDTH;
   public int CMP_TXT_2WIDTH      = CMPPrint.CMP_TXT_2WIDTH;
   public int CMP_TXT_3WIDTH      = CMPPrint.CMP_TXT_3WIDTH;
   public int CMP_TXT_4WIDTH      = CMPPrint.CMP_TXT_4WIDTH;
   public int CMP_TXT_5WIDTH      = CMPPrint.CMP_TXT_5WIDTH;
   public int CMP_TXT_6WIDTH      = CMPPrint.CMP_TXT_6WIDTH;
   public int CMP_TXT_7WIDTH      = CMPPrint.CMP_TXT_7WIDTH;
   public int CMP_TXT_8WIDTH      = CMPPrint.CMP_TXT_8WIDTH;
   
   public int CMP_TXT_1HEIGHT      = CMPPrint.CMP_TXT_1HEIGHT;
   public int CMP_TXT_2HEIGHT      = CMPPrint.CMP_TXT_2HEIGHT;
   public int CMP_TXT_3HEIGHT      = CMPPrint.CMP_TXT_3HEIGHT;
   public int CMP_TXT_4HEIGHT      = CMPPrint.CMP_TXT_4HEIGHT;
   public int CMP_TXT_5HEIGHT      = CMPPrint.CMP_TXT_5HEIGHT;
   public int CMP_TXT_6HEIGHT      = CMPPrint.CMP_TXT_6HEIGHT;
   public int CMP_TXT_7HEIGHT      = CMPPrint.CMP_TXT_7HEIGHT;
   public int CMP_TXT_8HEIGHT      = CMPPrint.CMP_TXT_8HEIGHT;
   
   public int CMP_HRI_TEXT_NONE     = CMPPrint.CMP_HRI_TEXT_NONE;
   public int CMP_HRI_TEXT_ABOVE    = CMPPrint.CMP_HRI_TEXT_ABOVE;
   public int CMP_HRI_TEXT_BELOW    = CMPPrint.CMP_HRI_TEXT_BELOW;
   
   public int CMP_STS_NORMAL       = CMPPrint.CMP_STS_NORMAL;
   public int CMP_STS_PAPER_EMPTY    = CMPPrint.CMP_STS_PAPER_EMPTY;
   public int CMP_STS_COVER_OPEN    = CMPPrint.CMP_STS_COVER_OPEN;
   public int CMP_STS_MSR_READ    = CMPPrint.CMP_STS_MSR_READ;
   
   public int CMP_BITMAP_NORMAL       = CMPPrint.CMP_BITMAP_NORMAL;
   public int CMP_BITMAP_DOUBLE_WIDTH    = CMPPrint.CMP_BITMAP_DOUBLE_WIDTH;
   public int CMP_BITMAP_DOUBLE_HEIGHT = CMPPrint.CMP_BITMAP_DOUBLE_HEIGHT;
   public int CMP_BITMAP_QUADRUPLE    = CMPPrint.CMP_BITMAP_QUADRUPLE;
   
   public int CMP_QRCODE_EC_LEVEL_L = CMPPrint.CMP_QRCODE_EC_LEVEL_L;
   public int CMP_QRCODE_EC_LEVEL_M = CMPPrint.CMP_QRCODE_EC_LEVEL_M;
   public int CMP_QRCODE_EC_LEVEL_Q = CMPPrint.CMP_QRCODE_EC_LEVEL_Q;
   public int CMP_QRCODE_EC_LEVEL_H = CMPPrint.CMP_QRCODE_EC_LEVEL_H;
   
   private ESCPOSPrinter posPtr;
   private ESCPOSPrinter posPtr1;
   // 0x1B
   private final char ESC = ESCPOS.ESC;
   
   public CitizenESCP()
   {
      posPtr = new ESCPOSPrinter();
   }
   
    public String OneRow(String Test) {
      return ESC+"|cA" + Test + "\n";
    }
    
    public void sample1() throws UnsupportedEncodingException {
       Log.i("sample1", "für printNormal");
       posPtr.printNormal(ESC+"|cA"+ESC+"|2CReceipt\r\n\r\n\r\n");
       posPtr.printNormal(ESC+"|rATEL (123)-456-7890\n\n\n");
       posPtr.printNormal(ESC+"|cAThank you for coming to our shop!\n");
       posPtr.printNormal(ESC+"|cADate\n\n");
       posPtr.printNormal("Chicken                             $10.00\n");
       posPtr.printNormal("Hamburger                           $20.00\n");
       posPtr.printNormal("Pizza                               $30.00\n");
       posPtr.printNormal("Lemons                              $40.00\n");
       posPtr.printNormal("Drink                               $50.00\n");
       posPtr.printNormal("Excluded tax                       $150.00\n");
       posPtr.printNormal(ESC+"|uCTax(5%)                              $7.50\n");
       posPtr.printNormal(ESC+"|bC"+ESC+"|2CTotal         $157.50\n\n");
       posPtr.printNormal("Payment                            $200.00\n");
       posPtr.printNormal("Change                              $42.50\n\n");
       posPtr.printBarCode("{Babc456789012", CMPPrint.CMP_BCS_Code128, 40, 512, CMPPrint.CMP_ALIGNMENT_CENTER, CMPPrint.CMP_HRI_TEXT_BELOW); // Print Barcode
    }
    
    public void sample2() throws UnsupportedEncodingException {
       posPtr.printText("Receipt\r\n\r\n\r\n", CMPPrint.CMP_ALIGNMENT_CENTER, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_2WIDTH);
       posPtr.printText("TEL (123)-456-7890\r\n", CMPPrint.CMP_ALIGNMENT_RIGHT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Thank you for coming to our shop!\r\n", CMPPrint.CMP_ALIGNMENT_CENTER, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Chicken                             $10.00\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Hamburger                           $20.00\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Pizza                               $30.00\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Lemons                              $40.00\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Drink                               $50.00\r\n\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Excluded tax                       $150.00\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Tax(5%)                              $7.50\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_UNDERLINE, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Total         $157.50\r\n\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_2WIDTH);
       posPtr.printText("Payment                            $200.00\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printText("Change                              $42.50\r\n\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);
       posPtr.printBarCode("0123456789", CMPPrint.CMP_BCS_Code39, 40, 512, CMPPrint.CMP_ALIGNMENT_CENTER, CMPPrint.CMP_HRI_TEXT_BELOW);
    }
    
    public void imageTest() throws IOException {
       posPtr.printBitmap("//sdcard//temp//citizen//car_s.jpg", CMPPrint.CMP_ALIGNMENT_CENTER);
       posPtr.printBitmap("//sdcard//temp//citizen//danmark_windmill.jpg", CMPPrint.CMP_ALIGNMENT_LEFT);
       posPtr.printBitmap("//sdcard//temp//citizen//denmark_flag.jpg", CMPPrint.CMP_ALIGNMENT_RIGHT);
    }
    
    public void westernLatinCharTest() throws UnsupportedEncodingException {       
       final char [] diff = {0x23,0x24,0x40,0x5B,0x5C,0x5D,0x5E,0x6C,0x7B,0x7C,0x7D,0x7E,
             0xA4,0xA6,0xA8,0xB4,0xB8,0xBC,0xBD,0xBE};
       String ad = new String(diff);
       posPtr.printText(ad+"\r\n\r\n", CMPPrint.CMP_ALIGNMENT_LEFT, CMPPrint.CMP_FNT_DEFAULT, CMPPrint.CMP_TXT_1WIDTH);          
    }
    
        
    
    public int multiply(int x){
       return 10*(x+25);
    }
     
    @SuppressWarnings("static-access")
   public void barcode2DTest(final BA ba) throws UnsupportedEncodingException  {
       Runnable r = new Runnable() {        
          @Override        
          public void run() {     
             posPtr1 = new ESCPOSPrinter();
             String data = "ABCDEFGHIJKLMN";           
             try {       
                posPtr1.printString("PDF417 1\r\n");
                posPtr1.printPDF417(data, data.length(), 2, 20, ESCPOSConst.CMP_ALIGNMENT_LEFT);
                posPtr1.printString("PDF417 2\r\n");
                posPtr1.printPDF417(data, data.length(), 10, 30, ESCPOSConst.CMP_ALIGNMENT_LEFT);       
                posPtr1.printString("QR 1\r\n");
                posPtr1.printQRCode(data, data.length(), 3, ESCPOSConst.CMP_QRCODE_EC_LEVEL_L, ESCPOSConst.CMP_ALIGNMENT_CENTER);
                posPtr1.printString("QR 2\r\n");
                posPtr1.printQRCode(data, data.length(), 11, ESCPOSConst.CMP_QRCODE_EC_LEVEL_L, ESCPOSConst.CMP_ALIGNMENT_CENTER);
                          
             } 
             catch (Exception e) {               
                ba.setLastException(e);
             }    
          }
       
       };
       ba.submitRunnable(r, this, 0);
    
    }    
   
}

Nothing works  :BangHead:

Ill hope somebody can help me. I don't want to give up!!!:cool:


Link to Citizen Download for Android
[Code]
http://www.citizen-europe.com/de/printer/support/software/Mobile

Best regards from Germany, good Night!

Erel · May 17, 2013

Do you get any error message?

NeverGiveUp2 · May 17, 2013

Hi Erel,

thanks for your answer. You do your job verywell. I read a lot of your examples and answers.:sign0098:

No, no i get no error messages. The printer do nothing. I wrote the i try a test with your AsyncStreamsText. The printer print the line. So connection is very good.

But maby i get another way. Can you give me a Help.

I need a

B4X:

Dim btDevice As BluetoothDevice

So i can try this code

B4X:

// Bluetooth Connection method.
    public void btConn(final BluetoothDevice btDev) throws IOException
    {
       new connTask().execute(btDev);
    }
    
       
    
 // Bluetooth Connection Task.
    class connTask extends AsyncTask<BluetoothDevice, Void, Integer>
    {
              
       @Override
       protected void onPreExecute()
       {
          ESCPOSPrinter posPtr2 = new ESCPOSPrinter();
          String data = "ABCDEFGHIJKLMN";  
          try {
            posPtr2.printString("PDF417 1\r\n");
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
         try {
            posPtr2.printPDF417(data, data.length(), 2, 20, ESCPOSConst.CMP_ALIGNMENT_LEFT);
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
         try {
            posPtr2.printString("PDF417 2\r\n");
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
         try {
            posPtr2.printPDF417(data, data.length(), 10, 30, ESCPOSConst.CMP_ALIGNMENT_LEFT);
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }       
         try {
            posPtr2.printString("QR 1\r\n");
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
         try {
            posPtr2.printQRCode(data, data.length(), 3, ESCPOSConst.CMP_QRCODE_EC_LEVEL_L, ESCPOSConst.CMP_ALIGNMENT_CENTER);
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
         try {
            posPtr2.printString("QR 2\r\n");
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
         try {
            posPtr2.printQRCode(data, data.length(), 11, ESCPOSConst.CMP_QRCODE_EC_LEVEL_L, ESCPOSConst.CMP_ALIGNMENT_CENTER);
         } catch (UnsupportedEncodingException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
         }
          super.onPreExecute();
       }
       
       @Override
       protected Integer doInBackground(BluetoothDevice... params)
       {
          Integer retVal = null;
          //try
          //{
             
             retVal = new Integer(0);
          //}
          //catch (UnsupportedEncodingException e)
          //{
          //   retVal = new Integer(-1);
          //}
          return retVal;
       }
       
       @Override
       protected void onPostExecute(Integer result)
       {
          if(result.intValue() == 0)   // Connection success.
          {
             
          }
          else   // Connection failed.
          {
             
          }
          super.onPostExecute(result);
       }
    }

What do you think about that?

Best regards from Germany

Erel · May 18, 2013

I recommend you to rewrite this library in Basic4android using Serial library and AsyncStream (or AsyncStreamsText). These libraries are very powerful.

timwil · May 18, 2013

If it is just a matter of getting the Citizen CMP20 to work via bluetooth it is very easy. I've had this working for an app that I did over a year ago. It also works with other bluetooth printers

http://www.b4x.com/forum/basic4andr...92-bluetooth-printing-via-spp.html#post101457

Oops! I didn't see that you are already printing from b4a. Why do you need a library?

NeverGiveUp2 · May 21, 2013

Hi Erel,
thank's for your answer. In this moment a don't have any idea to send my data to the printer. I can only send data with your AsyncStreamsText and my library with bluetooth-function from citizen.

NeverGiveUp2 · May 21, 2013

Hi timwil,
i try your example, but it doesen't work with my hardware. When i use the toggle-functions, the system go to nirwana. It doesen't answer any more. When i take the toogle-functions out, the system don't print. But thank you for your try to help me.

timwil · May 21, 2013

the toggle function is not absolutely required - it is just a convenience

try manually pairing the printer with your device

leave blue tooth on

try printing again

By The Way - what device are you trying this on? Version of Android?

NeverGiveUp2 · Dec 11, 2013

Hi guys,

after 6 month in want to try again to write a library for b4a. It is very important to use functions from the citizin-library to print QR-Codes, barcodes and BMP-Files.

In the document Android Port Package Manual from citizen is printed that you have to use the RequestHandler from citizen. I tried to use Threading from agraham. Maby he can help me.

Android code:

B4X:

Thread handlerThread;
.....
// Execution routine.
handlerThread = new Thread(new RequestHandler());
handlerThread.run();
.....
// Termination routine. To Avoid NullPointerException.
if ( ( handlerThread != null ) && ( handlerThread.isAlive() ) )
handlerThread.interrupt();

RequesHandler = com.citizen.request.android.RequestHandler;

I build 2 Librarys for b4a. CitizenBTPort and CitizenESCP. But i don't know how can i use the RequestHandler in Threading?

CitizenBtPort is for the Bluetooth-Connect to the Printer. Class is CitizenBtPort
CitizenESCP is for the Printer-Commands. Class is ESCPrinter

The Citizen_Android_1056.jar is the original Citizen Library.

Here are my Library? They are not realy ready for everybody!

Thank's for help!

Best regards from Germany

NeverGiveUp2 · Sep 8, 2014

Hi all,

here is an example based on bluetooth chat example to use a citizen CMP-20 mobile printer.
You have to copy the librararys in you custom lib directory. After copy you have to refresh
you libs. And click the checkboxes for the librarys.

Hope i could help.

Best regards from Germany.

NeverGiveUp2 · Sep 22, 2014

Here is an example without library and a sqlite db.

Java Question Citzizen CMP-20 library doesen't work

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