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Author Topic: LAMW - (SOLVED) simple esc/POS printing bridge?  (Read 1689 times)

Mongkey

  • Sr. Member
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  • Posts: 379
LAMW - (SOLVED) simple esc/POS printing bridge?
« on: May 28, 2023, 02:46:21 am »
Library:
https://github.com/DantSu/ESCPOS-ThermalPrinter-Android

Code: Pascal  [Select][+][-]
  1. EscPosPrinter printer = new EscPosPrinter(BluetoothPrintersConnections.selectFirstPaired(), 203, 48f, 32);
  2. printer
  3.     .printFormattedText(
  4.         "[C]<img>" + PrinterTextParserImg.bitmapToHexadecimalString(printer, this.getApplicationContext().getResources().getDrawableForDensity(R.drawable.logo, DisplayMetrics.DENSITY_MEDIUM))+"</img>\n" +
  5.         "[L]\n" +
  6.         "[C]<u><font size='big'>ORDER N°045</font></u>\n" +
  7.         "[L]\n" +
  8.         "[C]================================\n" +
  9.         "[L]\n" +
  10.         "[L]<b>BEAUTIFUL SHIRT</b>[R]9.99e\n" +
  11.         "[L]  + Size : S\n" +
  12.         "[L]\n" +
  13.         "[L]<b>AWESOME HAT</b>[R]24.99e\n" +
  14.         "[L]  + Size : 57/58\n" +
  15.         "[L]\n" +
  16.         "[C]--------------------------------\n" +
  17.         "[R]TOTAL PRICE :[R]34.98e\n" +
  18.         "[R]TAX :[R]4.23e\n" +
  19.         "[L]\n" +
  20.         "[C]================================\n" +
  21.         "[L]\n" +
  22.         "[L]<font size='tall'>Customer :</font>\n" +
  23.         "[L]Raymond DUPONT\n" +
  24.         "[L]5 rue des girafes\n" +
  25.         "[L]31547 PERPETES\n" +
  26.         "[L]Tel : +33801201456\n" +
  27.         "[L]\n" +
  28.         "[C]<barcode type='ean13' height='10'>831254784551</barcode>\n" +
  29.         "[C]<qrcode size='20'>https://dantsu.com/</qrcode>"
  30.     );
  31.  

Code: Pascal  [Select][+][-]
  1. package com.dantsu.thermalprinter;
  2.  
  3. import androidx.annotation.NonNull;
  4. import androidx.appcompat.app.AppCompatActivity;
  5. import androidx.core.app.ActivityCompat;
  6. import androidx.core.content.ContextCompat;
  7.  
  8. import android.Manifest;
  9. import android.annotation.SuppressLint;
  10. import android.app.AlertDialog;
  11. import android.app.PendingIntent;
  12. import android.content.BroadcastReceiver;
  13. import android.content.Context;
  14. import android.content.Intent;
  15. import android.content.IntentFilter;
  16. import android.content.pm.PackageManager;
  17. import android.hardware.usb.UsbDevice;
  18. import android.hardware.usb.UsbManager;
  19. import android.os.Bundle;
  20. import android.util.DisplayMetrics;
  21. import android.util.Log;
  22. import android.widget.Button;
  23. import android.widget.EditText;
  24.  
  25. import com.dantsu.escposprinter.connection.DeviceConnection;
  26. import com.dantsu.escposprinter.connection.bluetooth.BluetoothConnection;
  27. import com.dantsu.escposprinter.connection.bluetooth.BluetoothPrintersConnections;
  28. import com.dantsu.escposprinter.connection.tcp.TcpConnection;
  29. import com.dantsu.escposprinter.connection.usb.UsbConnection;
  30. import com.dantsu.escposprinter.connection.usb.UsbPrintersConnections;
  31. import com.dantsu.escposprinter.textparser.PrinterTextParserImg;
  32. import com.dantsu.thermalprinter.async.AsyncBluetoothEscPosPrint;
  33. import com.dantsu.thermalprinter.async.AsyncEscPosPrint;
  34. import com.dantsu.thermalprinter.async.AsyncEscPosPrinter;
  35. import com.dantsu.thermalprinter.async.AsyncTcpEscPosPrint;
  36. import com.dantsu.thermalprinter.async.AsyncUsbEscPosPrint;
  37.  
  38. import java.text.SimpleDateFormat;
  39. import java.util.Date;
  40.  
  41. public class MainActivity extends AppCompatActivity {
  42.  
  43.  
  44.     @Override
  45.     protected void onCreate(Bundle savedInstanceState) {
  46.         super.onCreate(savedInstanceState);
  47.         setContentView(R.layout.activity_main);
  48.         Button button = (Button) this.findViewById(R.id.button_bluetooth_browse);
  49.         button.setOnClickListener(view -> browseBluetoothDevice());
  50.         button = (Button) findViewById(R.id.button_bluetooth);
  51.         button.setOnClickListener(view -> printBluetooth());
  52.         button = (Button) this.findViewById(R.id.button_usb);
  53.         button.setOnClickListener(view -> printUsb());
  54.         button = (Button) this.findViewById(R.id.button_tcp);
  55.         button.setOnClickListener(view -> printTcp());
  56.  
  57.     }
  58.  
  59.  
  60.     /*==============================================================================================
  61.     ======================================BLUETOOTH PART============================================
  62.     ==============================================================================================*/
  63.  
  64.     public interface OnBluetoothPermissionsGranted {
  65.         void onPermissionsGranted();
  66.     }
  67.  
  68.     public static final int PERMISSION_BLUETOOTH = 1;
  69.     public static final int PERMISSION_BLUETOOTH_ADMIN = 2;
  70.     public static final int PERMISSION_BLUETOOTH_CONNECT = 3;
  71.     public static final int PERMISSION_BLUETOOTH_SCAN = 4;
  72.  
  73.     public OnBluetoothPermissionsGranted onBluetoothPermissionsGranted;
  74.  
  75.     @Override
  76.     public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
  77.         super.onRequestPermissionsResult(requestCode, permissions, grantResults);
  78.         if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
  79.             switch (requestCode) {
  80.                 case MainActivity.PERMISSION_BLUETOOTH:
  81.                 case MainActivity.PERMISSION_BLUETOOTH_ADMIN:
  82.                 case MainActivity.PERMISSION_BLUETOOTH_CONNECT:
  83.                 case MainActivity.PERMISSION_BLUETOOTH_SCAN:
  84.                     this.checkBluetoothPermissions(this.onBluetoothPermissionsGranted);
  85.                     break;
  86.             }
  87.         }
  88.     }
  89.  
  90.     public void checkBluetoothPermissions(OnBluetoothPermissionsGranted onBluetoothPermissionsGranted) {
  91.         this.onBluetoothPermissionsGranted = onBluetoothPermissionsGranted;
  92.         if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.S && ContextCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH) != PackageManager.PERMISSION_GRANTED) {
  93.             ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.BLUETOOTH}, MainActivity.PERMISSION_BLUETOOTH);
  94.         } else if (android.os.Build.VERSION.SDK_INT < android.os.Build.VERSION_CODES.S && ContextCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_ADMIN) != PackageManager.PERMISSION_GRANTED) {
  95.             ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.BLUETOOTH_ADMIN}, MainActivity.PERMISSION_BLUETOOTH_ADMIN);
  96.         } else if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S && ContextCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
  97.             ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.BLUETOOTH_CONNECT}, MainActivity.PERMISSION_BLUETOOTH_CONNECT);
  98.         } else if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S && ContextCompat.checkSelfPermission(this, Manifest.permission.BLUETOOTH_SCAN) != PackageManager.PERMISSION_GRANTED) {
  99.             ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.BLUETOOTH_SCAN}, MainActivity.PERMISSION_BLUETOOTH_SCAN);
  100.         } else {
  101.             this.onBluetoothPermissionsGranted.onPermissionsGranted();
  102.         }
  103.     }
  104.  
  105.     private BluetoothConnection selectedDevice;
  106.  
  107.     public void browseBluetoothDevice() {
  108.         this.checkBluetoothPermissions(() -> {
  109.             final BluetoothConnection[] bluetoothDevicesList = (new BluetoothPrintersConnections()).getList();
  110.  
  111.             if (bluetoothDevicesList != null) {
  112.                 final String[] items = new String[bluetoothDevicesList.length + 1];
  113.                 items[0] = "Default printer";
  114.                 int i = 0;
  115.                 for (BluetoothConnection device : bluetoothDevicesList) {
  116.                     items[++i] = device.getDevice().getName();
  117.                 }
  118.  
  119.                 AlertDialog.Builder alertDialog = new AlertDialog.Builder(MainActivity.this);
  120.                 alertDialog.setTitle("Bluetooth printer selection");
  121.                 alertDialog.setItems(
  122.                     items,
  123.                     (dialogInterface, i1) -> {
  124.                         int index = i1 - 1;
  125.                         if (index == -1) {
  126.                             selectedDevice = null;
  127.                         } else {
  128.                             selectedDevice = bluetoothDevicesList[index];
  129.                         }
  130.                         Button button = (Button) findViewById(R.id.button_bluetooth_browse);
  131.                         button.setText(items[i1]);
  132.                     }
  133.                 );
  134.  
  135.                 AlertDialog alert = alertDialog.create();
  136.                 alert.setCanceledOnTouchOutside(false);
  137.                 alert.show();
  138.             }
  139.         });
  140.  
  141.     }
  142.  
  143.     public void printBluetooth() {
  144.         this.checkBluetoothPermissions(() -> {
  145.             new AsyncBluetoothEscPosPrint(
  146.                 this,
  147.                 new AsyncEscPosPrint.OnPrintFinished() {
  148.                     @Override
  149.                     public void onError(AsyncEscPosPrinter asyncEscPosPrinter, int codeException) {
  150.                         Log.e("Async.OnPrintFinished", "AsyncEscPosPrint.OnPrintFinished : An error occurred !");
  151.                     }
  152.  
  153.                     @Override
  154.                     public void onSuccess(AsyncEscPosPrinter asyncEscPosPrinter) {
  155.                         Log.i("Async.OnPrintFinished", "AsyncEscPosPrint.OnPrintFinished : Print is finished !");
  156.                     }
  157.                 }
  158.             )
  159.                 .execute(this.getAsyncEscPosPrinter(selectedDevice));
  160.         });
  161.     }
  162.  
  163.     /*==============================================================================================
  164.     ===========================================USB PART=============================================
  165.     ==============================================================================================*/
  166.  
  167.     private static final String ACTION_USB_PERMISSION = "com.android.example.USB_PERMISSION";
  168.     private final BroadcastReceiver usbReceiver = new BroadcastReceiver() {
  169.         public void onReceive(Context context, Intent intent) {
  170.             String action = intent.getAction();
  171.             if (MainActivity.ACTION_USB_PERMISSION.equals(action)) {
  172.                 synchronized (this) {
  173.                     UsbManager usbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
  174.                     UsbDevice usbDevice = (UsbDevice) intent.getParcelableExtra(UsbManager.EXTRA_DEVICE);
  175.                     if (intent.getBooleanExtra(UsbManager.EXTRA_PERMISSION_GRANTED, false)) {
  176.                         if (usbManager != null && usbDevice != null) {
  177.                             new AsyncUsbEscPosPrint(
  178.                                 context,
  179.                                 new AsyncEscPosPrint.OnPrintFinished() {
  180.                                     @Override
  181.                                     public void onError(AsyncEscPosPrinter asyncEscPosPrinter, int codeException) {
  182.                                         Log.e("Async.OnPrintFinished", "AsyncEscPosPrint.OnPrintFinished : An error occurred !");
  183.                                     }
  184.  
  185.                                     @Override
  186.                                     public void onSuccess(AsyncEscPosPrinter asyncEscPosPrinter) {
  187.                                         Log.i("Async.OnPrintFinished", "AsyncEscPosPrint.OnPrintFinished : Print is finished !");
  188.                                     }
  189.                                 }
  190.                             )
  191.                                 .execute(getAsyncEscPosPrinter(new UsbConnection(usbManager, usbDevice)));
  192.                         }
  193.                     }
  194.                 }
  195.             }
  196.         }
  197.     };
  198.  
  199.     public void printUsb() {
  200.         UsbConnection usbConnection = UsbPrintersConnections.selectFirstConnected(this);
  201.         UsbManager usbManager = (UsbManager) this.getSystemService(Context.USB_SERVICE);
  202.  
  203.         if (usbConnection == null || usbManager == null) {
  204.             new AlertDialog.Builder(this)
  205.                 .setTitle("USB Connection")
  206.                 .setMessage("No USB printer found.")
  207.                 .show();
  208.             return;
  209.         }
  210.  
  211.         PendingIntent permissionIntent = PendingIntent.getBroadcast(
  212.             this,
  213.             0,
  214.             new Intent(MainActivity.ACTION_USB_PERMISSION),
  215.             android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.S ? PendingIntent.FLAG_MUTABLE : 0
  216.         );
  217.         IntentFilter filter = new IntentFilter(MainActivity.ACTION_USB_PERMISSION);
  218.         registerReceiver(this.usbReceiver, filter);
  219.         usbManager.requestPermission(usbConnection.getDevice(), permissionIntent);
  220.     }
  221.  
  222.     /*==============================================================================================
  223.     =========================================TCP PART===============================================
  224.     ==============================================================================================*/
  225.  
  226.     public void printTcp() {
  227.         final EditText ipAddress = (EditText) this.findViewById(R.id.edittext_tcp_ip);
  228.         final EditText portAddress = (EditText) this.findViewById(R.id.edittext_tcp_port);
  229.  
  230.         try {
  231.             new AsyncTcpEscPosPrint(
  232.                 this,
  233.                 new AsyncEscPosPrint.OnPrintFinished() {
  234.                     @Override
  235.                     public void onError(AsyncEscPosPrinter asyncEscPosPrinter, int codeException) {
  236.                         Log.e("Async.OnPrintFinished", "AsyncEscPosPrint.OnPrintFinished : An error occurred !");
  237.                     }
  238.  
  239.                     @Override
  240.                     public void onSuccess(AsyncEscPosPrinter asyncEscPosPrinter) {
  241.                         Log.i("Async.OnPrintFinished", "AsyncEscPosPrint.OnPrintFinished : Print is finished !");
  242.                     }
  243.                 }
  244.             )
  245.                 .execute(
  246.                     this.getAsyncEscPosPrinter(
  247.                         new TcpConnection(
  248.                             ipAddress.getText().toString(),
  249.                             Integer.parseInt(portAddress.getText().toString())
  250.                         )
  251.                     )
  252.                 );
  253.         } catch (NumberFormatException e) {
  254.             new AlertDialog.Builder(this)
  255.                 .setTitle("Invalid TCP port address")
  256.                 .setMessage("Port field must be an integer.")
  257.                 .show();
  258.             e.printStackTrace();
  259.         }
  260.     }
  261.  
  262.     /*==============================================================================================
  263.     ===================================ESC/POS PRINTER PART=========================================
  264.     ==============================================================================================*/
  265.  
  266.     /**
  267.      * Asynchronous printing
  268.      */
  269.     @SuppressLint("SimpleDateFormat")
  270.     public AsyncEscPosPrinter getAsyncEscPosPrinter(DeviceConnection printerConnection) {
  271.         SimpleDateFormat format = new SimpleDateFormat("'on' yyyy-MM-dd 'at' HH:mm:ss");
  272.         AsyncEscPosPrinter printer = new AsyncEscPosPrinter(printerConnection, 203, 48f, 32);
  273.         return printer.addTextToPrint(
  274.             "[C]<img>" + PrinterTextParserImg.bitmapToHexadecimalString(printer, this.getApplicationContext().getResources().getDrawableForDensity(R.drawable.logo, DisplayMetrics.DENSITY_MEDIUM)) + "</img>\n" +
  275.                 "[L]\n" +
  276.                 "[C]<u><font size='big'>ORDER N°045</font></u>\n" +
  277.                 "[L]\n" +
  278.                 "[C]<u type='double'>" + format.format(new Date()) + "</u>\n" +
  279.                 "[C]\n" +
  280.                 "[C]================================\n" +
  281.                 "[L]\n" +
  282.                 "[L]<b>BEAUTIFUL SHIRT</b>[R]9.99€\n" +
  283.                 "[L]  + Size : S\n" +
  284.                 "[L]\n" +
  285.                 "[L]<b>AWESOME HAT</b>[R]24.99€\n" +
  286.                 "[L]  + Size : 57/58\n" +
  287.                 "[L]\n" +
  288.                 "[C]--------------------------------\n" +
  289.                 "[R]TOTAL PRICE :[R]34.98€\n" +
  290.                 "[R]TAX :[R]4.23€\n" +
  291.                 "[L]\n" +
  292.                 "[C]================================\n" +
  293.                 "[L]\n" +
  294.                 "[L]<u><font color='bg-black' size='tall'>Customer :</font></u>\n" +
  295.                 "[L]Raymond DUPONT\n" +
  296.                 "[L]5 rue des girafes\n" +
  297.                 "[L]31547 PERPETES\n" +
  298.                 "[L]Tel : +33801201456\n" +
  299.                 "\n" +
  300.                 "[C]<barcode type='ean13' height='10'>831254784551</barcode>\n" +
  301.                 "[L]\n" +
  302.                 "[C]<qrcode size='20'>https://dantsu.com/</qrcode>\n"
  303.         );
  304.     }
  305. }
« Last Edit: June 03, 2023, 03:06:08 am by Mongkey »

jmpessoa

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  • Posts: 2249
Re: LAMW - simple esc/POS printing bridge?
« Reply #1 on: May 28, 2023, 08:40:57 pm »

Ok. I will try implement a "jEscPosPrinter"  LAMW component!

Thank you!
Lamw: Lazarus Android Module Wizard
https://github.com/jmpessoa/lazandroidmodulewizard

Mongkey

  • Sr. Member
  • ****
  • Posts: 379
Re: LAMW - simple esc/POS printing bridge?
« Reply #2 on: May 29, 2023, 04:11:12 am »
Thank you mr. JMP  :)

jmpessoa

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Re: LAMW - simple esc/POS printing bridge?
« Reply #3 on: June 01, 2023, 01:51:58 am »

Done!

New "jsEscPosThermalPrinter"   component! 

need:
1)AppCompat theme

2)gradle:
 compileSdkVersion 33
 targetSdkVersion 33


New demo "AppCompatEscPosThermalPrinterDemo1"   
(please, test it!  I dont have a thermal printer....)

Lamw: Lazarus Android Module Wizard
https://github.com/jmpessoa/lazandroidmodulewizard

Insid3Code

  • New Member
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  • Posts: 20
  • Code Immersion
Re: LAMW - simple esc/POS printing bridge?
« Reply #4 on: June 01, 2023, 05:41:58 pm »
Hi,
Tested...

Thank you for this Nice work!

jmpessoa

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  • Posts: 2249
Re: LAMW - simple esc/POS printing bridge?
« Reply #5 on: June 01, 2023, 06:15:41 pm »
Quote
Bethoven composed much of his wonderful work without listening anymore....

Doing a simple coding without having an instrument to test it, is possible for mere mortals....  :D :D 8-) O:-)

Thank you!
« Last Edit: June 02, 2023, 12:39:32 am by jmpessoa »
Lamw: Lazarus Android Module Wizard
https://github.com/jmpessoa/lazandroidmodulewizard

Mongkey

  • Sr. Member
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  • Posts: 379
Re: LAMW - simple esc/POS printing bridge?
« Reply #6 on: June 02, 2023, 02:09:31 am »
 :)
Thank you!
Printing just like on kotlin

Mongkey

  • Sr. Member
  • ****
  • Posts: 379
Re: LAMW - simple esc/POS printing bridge?
« Reply #7 on: June 02, 2023, 03:56:50 am »
Thank you, wishing you good health and happiness  Mr. JMP,

My test result:
It really slow, on every print just like on first print, seems getlist() printer first on all print,

Could you add selectFirstPaired() not getlist() on printing?

Mongkey

  • Sr. Member
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  • Posts: 379
Re: LAMW - simple esc/POS printing bridge?
« Reply #8 on: June 02, 2023, 05:16:48 am »
I got another method very fast on printing Mr. JMP, you just need add call procedure on jbluetoothclient, image, custom font already added.

this attachment is the result
« Last Edit: June 02, 2023, 06:05:57 am by Mongkey »

jmpessoa

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Re: LAMW - simple esc/POS printing bridge?
« Reply #9 on: June 02, 2023, 05:21:47 am »
Quote
Could you add selectFirstPaired() not getlist() on printing?

Yes, "selectFirstPaired()" is already the API used by  LAMW "InitConnection" for Bluetooth!

Quote
I got another method very fast on printing Mr. JMP....

What another method?
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Mongkey

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Re: LAMW - simple esc/POS printing bridge?
« Reply #10 on: June 02, 2023, 05:27:51 am »
jBluetoothclientsocket.java

you just need to make proper call procedure and improve, bridging from java to pas is hard for me  %).

More and more simple step by step java to pas bridging tutorial would be appreciated  8)

Ability:
custom font
image
unicode

need improvement:
adding barcode print ability would be nice.
« Last Edit: June 02, 2023, 05:39:51 am by Mongkey »

jmpessoa

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Re: LAMW - simple esc/POS printing bridge?
« Reply #11 on: June 02, 2023, 08:27:41 am »
Quote
you just need to make proper call procedure and improve, bridging from java to pas is hard for me

Ok.

What functions from the new "jBluetoothclientsocket.java"  you need a bridge to be called from to Pascal/LAMW side?
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Mongkey

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Re: LAMW - simple esc/POS printing bridge?
« Reply #12 on: June 02, 2023, 09:23:24 am »
Hello Mr JMP, i already tried bridging, but still failed, how to solve?
Code: Java  [Select][+][-]
  1.     public void print_Custom(String _message, int _size, int _align) {
  2.         printCustom(_message, _size, _align); // total 32 char in a single line
  3.     }
  4.  

Code: Pascal  [Select][+][-]
  1.     procedure print_Custom(var _message: string; _size:integer; _align:integer);  overload;
  2.  

Code: Pascal  [Select][+][-]
  1. procedure jBluetoothClientSocket.print_Custom(var _message: string; _size:integer; _align:integer);
  2. begin
  3.   //in designing component state: set value here...
  4.   if FInitialized then
  5.      jBluetoothClientSocket_print_Custom(gApp.jni.jEnv, FjObject, _message, _size, _align);
  6. end;
  7.  


Code: Pascal  [Select][+][-]
  1. procedure jBluetoothClientSocket_print_Custom(env: PJNIEnv; _jbluetoothclientsocket: JObject; var _message: string; _size: integer; _align: integer);
  2. var
  3.   jParams: array[0..0] of jValue;
  4.   jMethod: jMethodID=nil;
  5.   jCls: jClass=nil;
  6. begin
  7.   jParams[0].l:= env^.NewStringUTF(env, PChar(_message));
  8.   jCls:= env^.GetObjectClass(env, _jbluetoothclientsocket);
  9.   jMethod:= env^.GetMethodID(env, jCls, 'print_Custom', '(Ljava/lang/String;)V');
  10.   env^.CallVoidMethodA(env, _jbluetoothclientsocket, jMethod, @jParams);
  11. env^.DeleteLocalRef(env,jParams[0].l);
  12.   env^.DeleteLocalRef(env, jCls);
  13. end;
  14.  

f_bluetooth.jBluetoothClientSocket1.print_Custom('test',3,1);

this one still raising error:
u_order.pas(2696,43) Error: identifier idents no member "print_Custom"

Thank you.

jmpessoa

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Re: LAMW - simple esc/POS printing bridge?
« Reply #13 on: June 02, 2023, 10:50:50 am »
......................
« Last Edit: June 02, 2023, 10:52:31 am by jmpessoa »
Lamw: Lazarus Android Module Wizard
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jmpessoa

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Re: LAMW - simple esc/POS printing bridge?
« Reply #14 on: June 02, 2023, 10:53:00 am »
Using IDE menu "Tools" --> [LAMW ...] --->  "New jComponent Create"  :   (see picture)


You got into the page/tab  "Pascal":

Code: Pascal  [Select][+][-]
  1. unit ujbluetoothclientsocket;
  2.  
  3. {$mode delphi}
  4.  
  5. interface
  6.  
  7. uses
  8.   Classes, SysUtils, And_jni, AndroidWidget;
  9.  
  10. type
  11.  
  12. {warning: draft "jBluetoothClientSocket" complement....}
  13. {         copy/add to *jbluetoothclientsocket.pas" file}
  14.  
  15. jBluetoothClientSocket = class
  16.  public
  17.     procedure print_Custom(_message: string; _size: integer; _align: integer);
  18.  
  19. end;
  20.  
  21. procedure jBluetoothClientSocket_print_Custom(env: PJNIEnv; _jbluetoothclientsocket: JObject; _message: string; _size: integer; _align: integer);
  22.  
  23.  
  24. implementation
  25.  
  26. {---------  jBluetoothClientSocket  --------------}
  27.  
  28. procedure jBluetoothClientSocket.print_Custom(_message: string; _size: integer; _align: integer);
  29. begin
  30.   //in designing component state: set value here...
  31.   if FInitialized then
  32.      jBluetoothClientSocket_print_Custom(gApp.jni.jEnv, FjObject, _message ,_size ,_align);
  33. end;
  34.  
  35. {-------- jBluetoothClientSocket_JNI_Bridge ----------}
  36.  
  37. procedure jBluetoothClientSocket_print_Custom(env: PJNIEnv; _jbluetoothclientsocket: JObject; _message: string; _size: integer; _align: integer);
  38. var
  39.   jParams: array[0..2] of jValue;
  40.   jMethod: jMethodID=nil;
  41.   jCls: jClass=nil;
  42. label
  43.   _exceptionOcurred;
  44. begin
  45.   if (env = nil) or (_jbluetoothclientsocket = nil) then exit;
  46.   jCls:= env^.GetObjectClass(env, _jbluetoothclientsocket);
  47.   if jCls = nil then goto _exceptionOcurred;
  48.   jMethod:= env^.GetMethodID(env, jCls, 'print_Custom', '(Ljava/lang/String;II)V');
  49.   if jMethod = nil then begin env^.DeleteLocalRef(env, jCls); goto _exceptionOcurred; end;
  50.  
  51.   jParams[0].l:= env^.NewStringUTF(env, PChar(_message));
  52.   jParams[1].i:= _size;
  53.   jParams[2].i:= _align;
  54.  
  55.   env^.CallVoidMethodA(env, _jbluetoothclientsocket, jMethod, @jParams);
  56. env^.DeleteLocalRef(env,jParams[0].l);
  57.  
  58.   env^.DeleteLocalRef(env, jCls);
  59.   _exceptionOcurred: jni_ExceptionOccurred(env);
  60. end;
  61.  
  62. end.
  63.  

Now copy the generated code "by parts' to the  real  "bluetoothClientSocket.pas" in the folder "android_bridges"....

after that do a "Run" --> "Clean up and Build"  on your LAMW project.... do fix the 
"Error: identifier idents no member "print_Custom""



« Last Edit: June 02, 2023, 05:41:26 pm by jmpessoa »
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