can you teach me how to scan only bluetooth device? i don’t know how to do it. here’s my code. My goal is to get only type of bluetooth printer devices.
printer classs
import { Component } from '@angular/core';
import { IonicPage, NavController, NavParams, ModalController, AlertController, ToastController } from 'ionic-angular';
import {PrintProvider} from '../../providers/print/print';
import { DatabaseProvider } from '../../providers/database/database';
@IonicPage()
@Component({
selector: 'page-printer',
templateUrl: 'printer.html',
})
export class PrinterPage {
SelectedPrinter:any = [];
Bluetooth_Printer_List:any = []
Bluetooth_Name: string = null
Bluetooth_ID: string = null
Bluetooth_Address:string = null
Bluetooth_Device_List:any = []
constructor(public navCtrl: NavController, public navParams: NavParams, private modalCtrl:ModalController,
private printProvider:PrintProvider, private alertCtrl:AlertController,
public toastCtrl: ToastController, private database: DatabaseProvider) {
}
ionViewDidLoad() {
}
ionViewDidEnter(){
this.getBluetoothPrinter()
}
getBluetoothPrinter(){
this.database.readBluetoothPrinter().then(data=>{
this.Bluetooth_Printer_List = data
this.Bluetooth_Name = this.Bluetooth_Printer_List[0].bluetooth_name
this.Bluetooth_Address = this.Bluetooth_Printer_List[0].bluetooth_address
this.Bluetooth_ID = this.Bluetooth_Printer_List[0].bluetooth_id
}, (error) => {
console.log(error);
})
}
listBTDevice()
{
this.printProvider.searchBt().then(datalist=>{
this.Bluetooth_Device_List = datalist
this.showBluetoothDeviceList()
},err=>{
this.errorToast(err);
})
}
testConnectPrinter()
{
var id = this.Bluetooth_ID
if(id==null||id==""||id==undefined)
{
//nothing happens, you can put an alert here saying no printer selected
this.informationtoast("Please select printer.");
}
else
{
this.printProvider.connectBT(id).subscribe(data=>{
this.informationtoast("Connected successfully!");
},err=>{
this.informationtoast(err);
});
}
}
testPrinter()
{
var id = this.Bluetooth_ID
if(id==null||id==""||id==undefined)
{
//nothing happens, you can put an alert here saying no printer selected
this.informationtoast("Please select printer.");
}
else
{
this.printProvider.formatPrint(id);
}
}
informationtoast(textMessage: string) {
const toast = this.toastCtrl.create({
message: textMessage,
duration: 3000,
cssClass: 'information-toast'
});
toast.present();
}
errorToast(textMessage: string) {
const toast = this.toastCtrl.create({
message: textMessage,
duration: 3000,
cssClass: 'error-toast'
});
toast.present();
}
saveDefaultBlutoothPrinter(){
this.database.insertBluetoothPrinter(this.SelectedPrinter);
this.getBluetoothPrinter()
}
showBluetoothDeviceList() {
let alert = this.alertCtrl.create();
alert.setTitle('Bluetooth device list');
for(var i = 0; this.Bluetooth_Device_List.length > i ; i++){
alert.addInput({
type: 'radio',
label: this.Bluetooth_Device_List[i].name,
value: this.Bluetooth_Device_List[i].name
});
}
alert.addButton('Cancel');
alert.addButton({
text: 'OK',
handler: data => {
this.getBluetoothDeviceData(data)
this.saveDefaultBlutoothPrinter()
}
});
alert.present();
}
getBluetoothDeviceData(bluetooth_name: string){
this.Bluetooth_Device_List.forEach(element => {
if(element.name ==bluetooth_name ){
this.SelectedPrinter = element
}
});
}
}
bluetooth provider class
import { HttpClient } from '@angular/common/http';
import { Injectable } from '@angular/core';
import {AlertController, LoadingController, ToastController } from 'ionic-angular';
import { BluetoothSerial } from '@ionic-native/bluetooth-serial';
import {MutableBuffer} from 'mutable-buffer';
/**
* RGB interface
*/
interface IRGB {
r: number;
g: number;
b: number;
a: number;
}
@Injectable()
export class PrintProvider {
buff=new MutableBuffer(1000,1000);
constructor(public http: HttpClient, private btSerial:BluetoothSerial,
private alertCtrl:AlertController , public loadingCtrl: LoadingController, public toastCtrl: ToastController) {
}
searchBt()
{
return this.btSerial.list();
}
connectBT(bluetooth_address)
{
return this.btSerial.connect(bluetooth_address);
}
disconnectBT(){
this.btSerial.disconnect();
}
formatPrint(bluetooth_address){
var temp_date = new Date();
var year = temp_date.getFullYear();
var month = temp_date.getMonth().toString();
var day = temp_date.getDate();
var hour = temp_date.getHours();
var minutes = temp_date.getMinutes();
var period = "AM"
if(hour > 12){
var result = Number.parseInt(hour.toString()) - 12
hour = result
period = "PM"
}
var time = hour + ":" + minutes +" " + period
var todayDate = month + "/" + day + "/" + year + " " + time
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_CT);
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_ON);
this.buff.write(this.Command.TEXT_FORMAT.TXT_2HEIGHT);
this.buff.write(this.Command.TEXT_FORMAT.TXT_2WIDTH);
this.buff.write("PCG Cellphone Shop");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_NORMAL);
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_OFF);
this.buff.write("Plaza Burgos, Guagua, Pampanga");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF); //2 lines
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_OFF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_OFF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_FONT_A);
this.buff.write("Smart Padala No.");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("5577-5194-0426-6109");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("5577-5194-0426-7109");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("0999-3209009");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF); //2 lines
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
/////////////////////////////////////////////////////////////
this.buff.write("Cashier: PCG Sales POS");
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("POS: SP POS 1");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF); //2 lines
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write("Customer: Nora B. Beiza");
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("09430359637");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("------------------------------------------------");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write("Receive - Smart Padala: ");
this.buff.write("2,000.00");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write("1 x 2,000.00");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write("20Jan 10:19: Received P2,000.00 with P23.00 commission from 09393965558 to PCG LA.LIBRE ang pag-claim! Ref:174813715fdf Bal:P16,297.84");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write("03. 1,500.01 to 2,000 -> ");
this.buff.write("0.00");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write("Receive Charge");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write("1 x 0.00");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("------------------------------------------------");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_ON);
this.buff.write("Total: ");
this.buff.write("2,000.00");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_LT);
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_OFF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_NORMAL);
this.buff.write("Cash: ");
this.buff.write("2,000.00");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("------------------------------------------------");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
/////////////////////////////////////////////////////////////
this.buff.write(this.Command.TEXT_FORMAT.TXT_ALIGN_CT);
this.buff.write("Thank you for choosing Smart Padala!");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_ON);
this.buff.write("Bald Puppies Solutions Inc.");
this.buff.write(this.Command.TEXT_FORMAT.TXT_BOLD_OFF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("2nd Floor, Traders Square Building");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("P. Burgos Street");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("Naga, Camarines Sur 4400");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write("(054) 881 1748");
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.buff.write(todayDate);
this.buff.write(this.Command.FEED_CONTROL_SEQUENCES.CTL_LF);
this.presentLoading();
let xyz=this.connectBT(bluetooth_address).subscribe(data=>{
this.btSerial.write(this.buff.buffer).then(dataz=>{
this.buff.flush();
this.buff.write(this.Command.HARDWARE.HW_INIT)
this.informationtoast("Print successfully!");
xyz.unsubscribe();
},errx=>{
this.buff.flush();
this.buff.write(this.Command.HARDWARE.HW_INIT)
this.errorToast("Print failed.");
});
},err=>{
this.buff.flush();
this.buff.write(this.Command.HARDWARE.HW_INIT)
this.disconnectBT();
this.errorToast("Connection error.");
});
}
Command={
LF: '\x0a', //Line feed for new lines
EOL: '\n', //end of line
FEED_CONTROL_SEQUENCES: {
CTL_LF: '\x0a', // Print and line feed
CTL_FF: '\x0c', // Form feed
CTL_CR: '\x0d', // Carriage return
CTL_HT: '\x09', // Horizontal tab
CTL_VT: '\x0b', // Vertical tab
},
LINE_SPACING: {
LS_DEFAULT: '\x1b\x32', //Spacing
LS_SET: '\x1b\x33' //Spacing
},
HARDWARE: {
HW_INIT: '\x1b\x40', // Clear data in buffer and reset modes
HW_SELECT: '\x1b\x3d\x01', // Printer select
HW_RESET: '\x1b\x3f\x0a\x00', // Reset printer hardware
},
CASH_DRAWER: {
CD_KICK_2: '\x1b\x70\x00', // Sends a pulse to pin 2 []
CD_KICK_5: '\x1b\x70\x01', // Sends a pulse to pin 5 []
},
MARGINS: {
BOTTOM: '\x1b\x4f', // Fix bottom size
LEFT: '\x1b\x6c', // Fix left size
RIGHT: '\x1b\x51', // Fix right size
},
PAPER: {
PAPER_FULL_CUT: '\x1d\x56\x00', // Full cut paper
PAPER_PART_CUT: '\x1d\x56\x01', // Partial cut paper
PAPER_CUT_A: '\x1d\x56\x41', // Partial cut paper
PAPER_CUT_B: '\x1d\x56\x42', // Partial cut paper
},
TEXT_FORMAT: {
TXT_NORMAL: '\x1b\x21\x00', // Normal text
TXT_2HEIGHT: '\x1b\x21\x10', // Double height text
TXT_2WIDTH: '\x1b\x21\x20', // Double width text
TXT_4SQUARE: '\x1b\x21\x30', // Double width & height text
TXT_CUSTOM_SIZE: function(width, height) { // other sizes
var widthDec = (width - 1) * 16;
var heightDec = height - 1;
var sizeDec = widthDec + heightDec;
return '\x1d\x21' + String.fromCharCode(sizeDec);
},
TXT_HEIGHT: {
1: '\x00',
2: '\x01',
3: '\x02',
4: '\x03',
5: '\x04',
6: '\x05',
7: '\x06',
8: '\x07'
},
TXT_WIDTH: {
1: '\x00',
2: '\x10',
3: '\x20',
4: '\x30',
5: '\x40',
6: '\x50',
7: '\x60',
8: '\x70'
},
TXT_UNDERL_OFF: '\x1b\x2d\x00', // Underline font OFF
TXT_UNDERL_ON: '\x1b\x2d\x01', // Underline font 1-dot ON
TXT_UNDERL2_ON: '\x1b\x2d\x02', // Underline font 2-dot ON
TXT_BOLD_OFF: '\x1b\x45\x00', // Bold font OFF
TXT_BOLD_ON: '\x1b\x45\x01', // Bold font ON
TXT_ITALIC_OFF: '\x1b\x35', // Italic font ON
TXT_ITALIC_ON: '\x1b\x34', // Italic font ON
TXT_FONT_A: '\x1b\x4d\x00', // Font type A //normal font
TXT_FONT_B: '\x1b\x4d\x01', // Font type B //small font
TXT_FONT_C: '\x1b\x4d\x02', // Font type C //normal font
TXT_ALIGN_LT: '\x1b\x61\x00', // Left justification
TXT_ALIGN_CT: '\x1b\x61\x01', // Centering
TXT_ALIGN_RT: '\x1b\x61\x02', // Right justification
},
BARCODE_FORMAT: {
BARCODE_TXT_OFF: '\x1d\x48\x00', // HRI barcode chars OFF
BARCODE_TXT_ABV: '\x1d\x48\x01', // HRI barcode chars above
BARCODE_TXT_BLW: '\x1d\x48\x02', // HRI barcode chars below
BARCODE_TXT_BTH: '\x1d\x48\x03', // HRI barcode chars both above and below
BARCODE_FONT_A: '\x1d\x66\x00', // Font type A for HRI barcode chars
BARCODE_FONT_B: '\x1d\x66\x01', // Font type B for HRI barcode chars
BARCODE_HEIGHT: function(height) { // Barcode Height [1-255]
return '\x1d\x68' + String.fromCharCode(height);
},
// Barcode Width [2-6]
BARCODE_WIDTH: {
1: '\x1d\x77\x02',
2: '\x1d\x77\x03',
3: '\x1d\x77\x04',
4: '\x1d\x77\x05',
5: '\x1d\x77\x06',
},
BARCODE_HEIGHT_DEFAULT: '\x1d\x68\x64', // Barcode height default:100
BARCODE_WIDTH_DEFAULT: '\x1d\x77\x01', // Barcode width default:1
BARCODE_UPC_A: '\x1d\x6b\x00', // Barcode type UPC-A
BARCODE_UPC_E: '\x1d\x6b\x01', // Barcode type UPC-E
BARCODE_EAN13: '\x1d\x6b\x02', // Barcode type EAN13
BARCODE_EAN8: '\x1d\x6b\x03', // Barcode type EAN8
BARCODE_CODE39: '\x1d\x6b\x04', // Barcode type CODE39
BARCODE_ITF: '\x1d\x6b\x05', // Barcode type ITF
BARCODE_NW7: '\x1d\x6b\x06', // Barcode type NW7
BARCODE_CODE93: '\x1d\x6b\x48', // Barcode type CODE93
BARCODE_CODE128: '\x1d\x6b\x49', // Barcode type CODE128
},
CODE2D_FORMAT: {
TYPE_PDF417: '\x1b\x5a\x00',
TYPE_DATAMATRIX: '\x1b\x5a\x01',
TYPE_QR: '\x1b\x5a\x02',
CODE2D: '\x1b\x5a',
},
IMAGE_FORMAT: {
S_RASTER_N: '\x1d\x76\x30\x00', // Set raster image normal size
S_RASTER_2W: '\x1d\x76\x30\x01', // Set raster image double width
S_RASTER_2H: '\x1d\x76\x30\x02', // Set raster image double height
S_RASTER_Q: '\x1d\x76\x30\x03', // Set raster image quadruple
},
BITMAP_FORMAT: {
BITMAP_S8: '\x1b\x2a\x00',
BITMAP_D8: '\x1b\x2a\x01',
BITMAP_S24: '\x1b\x2a\x20',
BITMAP_D24: '\x1b\x2a\x21'
},
GSV0_FORMAT: {
GSV0_NORMAL: '\x1d\x76\x30\x00',
GSV0_DW: '\x1d\x76\x30\x01',
GSV0_DH: '\x1d\x76\x30\x02',
GSV0_DWDH: '\x1d\x76\x30\x03'
}
};
presentLoading() {
const loader = this.loadingCtrl.create({
content: "Please wait...",
});
loader.present();
}
informationtoast(textMessage: string) {
const toast = this.toastCtrl.create({
message: textMessage,
duration: 3000,
cssClass: 'information-toast'
});
toast.present();
}
errorToast(textMessage: string) {
const toast = this.toastCtrl.create({
message: textMessage,
duration: 3000,
cssClass: 'error-toast'
});
toast.present();
}
}
