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App.tsx
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App.tsx
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import React from 'react';
import { useState } from 'react';
import {
View,
Text,
Button,
TextInput,
PermissionsAndroid,
Platform
} from 'react-native';
import CheckBox from '@react-native-community/checkbox';
import {
InterfaceType,
StarConnectionSettings,
StarXpandCommand,
StarPrinter
} from 'react-native-star-io10';
export default function App() {
const [interfaceType, setInterfaceType] = useState(InterfaceType.Lan);
const [identifier, setIdentifier] = useState("00:11:62:00:00:00");
const [templateIndex, setTemplateIndex] = useState(0);
const [fieldDataIndex, setFieldDataIndex] = useState(0);
async function _onPressPrintButton() {
var settings = new StarConnectionSettings();
settings.interfaceType = interfaceType;
settings.identifier = identifier;
// settings.autoSwitchInterface = true;
// If you are using Android 12 and targetSdkVersion is 31 or later,
// you have to request Bluetooth permission (Nearby devices permission) to use the Bluetooth printer.
// https://developer.android.com/about/versions/12/features/bluetooth-permissions
if (Platform.OS == 'android' && 31 <= Platform.Version) {
if (interfaceType == InterfaceType.Bluetooth || settings.autoSwitchInterface == true) {
var hasPermission = await _confirmBluetoothPermission();
if (!hasPermission) {
console.log(`PERMISSION ERROR: You have to allow Nearby devices to use the Bluetooth printer`);
return;
}
}
}
var printer = new StarPrinter(settings);
var template;
var fieldData;
if (templateIndex == 0) { // Template: Receipt w/ specifying number of characters
template = await _createReceiptWithSpecifyingNumberOfCharactersTemplate();
if (fieldDataIndex == 0) { // Field Data: Receipt1
fieldData = RECEIPT1_FIELD_DATA;
}
else { // Field Data: Receipt2
fieldData = RECEIPT2_FIELD_DATA;
}
}
else if (templateIndex == 1) { // Template: Receipt w/o specifying number of characters
template = await _createReceiptWithoutSpecifyingNumberOfCharactersTemplate();
if (fieldDataIndex == 0) { // Field Data: Receipt1
fieldData = RECEIPT1_FIELD_DATA;
}
else { // Field Data: Receipt3
fieldData = RECEIPT3_FIELD_DATA;
}
}
else { // Template: Label
template = await _createLabelTemplate();
if (fieldDataIndex == 0) { // Field Data: Label1
fieldData = LABEL1_FIELD_DATA;
}
else { // Field Data: Label2
fieldData = LABEL2_FIELD_DATA;
}
}
printer.template = template;
try {
await printer.open();
await printer.print(fieldData);
console.log(`Success`);
}
catch (error) {
console.log(`Error: ${String(error)}`);
}
finally {
await printer.close();
await printer.dispose();
}
}
async function _createReceiptWithSpecifyingNumberOfCharactersTemplate(): Promise<string> {
var builder = new StarXpandCommand.StarXpandCommandBuilder();
builder.addDocument(new StarXpandCommand.DocumentBuilder()
.settingPrintableArea(48.0)
.addPrinter(new StarXpandCommand.PrinterBuilder()
.actionPrintImage(new StarXpandCommand.Printer.ImageParameter("logo_01.png", 406))
.styleInternationalCharacter(StarXpandCommand.Printer.InternationalCharacterType.Usa)
.styleCharacterSpace(0.0)
.add(
new StarXpandCommand.PrinterBuilder()
.styleAlignment(StarXpandCommand.Printer.Alignment.Center)
.styleBold(true)
.styleInvert(true)
.styleMagnification(new StarXpandCommand.MagnificationParameter(2, 2))
.actionPrintText("${store_name}\n")
)
.actionFeed(1.0)
.actionPrintText(
"Order ${order_number}",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
16
)
)
.actionPrintText(" ")
.actionPrintText(
"${time}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
15,
new StarXpandCommand.Printer.TextWidthParameter()
.setAlignment(StarXpandCommand.Printer.TextAlignment.Right)
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
.actionPrintText(
"Sale for ${sales_type}",
new StarXpandCommand.Printer.TextParameter()
.setWidth(16)
)
.actionPrintText(" ")
.actionPrintText(
"Served by ${server}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
15,
new StarXpandCommand.Printer.TextWidthParameter()
.setAlignment(StarXpandCommand.Printer.TextAlignment.Right)
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
.actionPrintText(
"Transaction #${transaction_id}\n"
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.add(
new StarXpandCommand.PrinterBuilder(
new StarXpandCommand.Printer.PrinterParameter()
.setTemplateExtension(
new StarXpandCommand.TemplateExtensionParameter()
.setEnableArrayFieldData(true)
)
)
.actionPrintText(
"${item_list.quantity}",
new StarXpandCommand.Printer.TextParameter()
.setWidth(2)
)
.actionPrintText(
"${item_list.name}",
new StarXpandCommand.Printer.TextParameter()
.setWidth(24)
)
.actionPrintText(
"${item_list.unit_price%6.2lf}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(6)
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText(
"Subtotal",
new StarXpandCommand.Printer.TextParameter()
.setWidth(26)
)
.actionPrintText(
"${subtotal%6.2lf}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
6,
new StarXpandCommand.Printer.TextWidthParameter()
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
.actionPrintText(
"Tax",
new StarXpandCommand.Printer.TextParameter()
.setWidth(26)
)
.actionPrintText(
"${tax%6.2lf}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
6,
new StarXpandCommand.Printer.TextWidthParameter()
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
.add(
new StarXpandCommand.PrinterBuilder()
.styleBold(true)
.actionPrintText(
"Total",
new StarXpandCommand.Printer.TextParameter()
.setWidth(26)
)
.actionPrintText(
"${total%6.2lf}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
6,
new StarXpandCommand.Printer.TextWidthParameter()
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText(
"${credit_card_number}",
new StarXpandCommand.Printer.TextParameter()
.setWidth(26)
)
.actionPrintText(
"${total%6.2lf}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
6,
new StarXpandCommand.Printer.TextWidthParameter()
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
.actionPrintText(
"Approval Code",
new StarXpandCommand.Printer.TextParameter()
.setWidth(16)
)
.actionPrintText(
"${approval_code}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
16,
new StarXpandCommand.Printer.TextWidthParameter()
.setAlignment(StarXpandCommand.Printer.TextAlignment.Right)
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText(
"Amount",
new StarXpandCommand.Printer.TextParameter()
.setWidth(26)
)
.actionPrintText(
"${amount%6.2lf}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
6,
new StarXpandCommand.Printer.TextWidthParameter()
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
.actionPrintText(
"Total",
new StarXpandCommand.Printer.TextParameter()
.setWidth(26)
)
.actionPrintText(
"${total%6.2lf}\n",
new StarXpandCommand.Printer.TextParameter()
.setWidth(
6,
new StarXpandCommand.Printer.TextWidthParameter()
.setEllipsizeType(StarXpandCommand.Printer.TextEllipsizeType.End)
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText(
"Signature\n"
)
.add(
new StarXpandCommand.PrinterBuilder()
.styleAlignment(StarXpandCommand.Printer.Alignment.Center)
.actionPrintImage(
new StarXpandCommand.Printer.ImageParameter("signature.png", 256)
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(32.0)
.setX(8.0)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText("\n")
.styleAlignment(StarXpandCommand.Printer.Alignment.Center)
.actionPrintText(
"${address}\n"
)
.actionPrintText(
"${tel}\n"
)
.actionPrintText(
"${mail}\n"
)
.actionFeed(1.0)
.actionPrintText(
"${url}\n"
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionFeed(2.0)
.actionPrintText(
"Powered by Star Micronics\n"
)
.actionPrintBarcode(
new StarXpandCommand.Printer.BarcodeParameter("${transaction_id}", StarXpandCommand.Printer.BarcodeSymbology.Code128)
.setPrintHri(true)
)
.actionCut(StarXpandCommand.Printer.CutType.Partial)
)
);
return builder.getCommands();
}
async function _createReceiptWithoutSpecifyingNumberOfCharactersTemplate(): Promise<string> {
var builder = new StarXpandCommand.StarXpandCommandBuilder();
builder.addDocument(new StarXpandCommand.DocumentBuilder()
.settingPrintableArea(48.0)
.addPrinter(new StarXpandCommand.PrinterBuilder()
.actionPrintImage(new StarXpandCommand.Printer.ImageParameter("logo_01.png", 406))
.styleInternationalCharacter(StarXpandCommand.Printer.InternationalCharacterType.Usa)
.styleCharacterSpace(0.0)
.add(
new StarXpandCommand.PrinterBuilder()
.styleAlignment(StarXpandCommand.Printer.Alignment.Center)
.styleBold(true)
.styleInvert(true)
.styleMagnification(new StarXpandCommand.MagnificationParameter(2, 2))
.actionPrintText("${store_name}\n")
)
.actionFeed(1.0)
.styleHorizontalTabPositions([17])
.actionPrintText(
"Order ${order_number}\t${time}\n"
)
.actionPrintText(
"Sale for ${sales_type}\tServed by ${server}\n"
)
.actionPrintText(
"Transaction #${transaction_id}\n"
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.add(
new StarXpandCommand.PrinterBuilder(
new StarXpandCommand.Printer.PrinterParameter()
.setTemplateExtension(
new StarXpandCommand.TemplateExtensionParameter()
.setEnableArrayFieldData(true)
)
)
.styleHorizontalTabPositions([2, 26])
.actionPrintText(
"${item_list.quantity}\t${item_list.name}\t${item_list.unit_price%6.2lf}\n"
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.styleHorizontalTabPositions([26])
.actionPrintText(
"Subtotal\t${subtotal%6.2lf}\n"
)
.actionPrintText(
"Tax\t${tax%6.2lf}\n"
)
.add(
new StarXpandCommand.PrinterBuilder()
.styleBold(true)
.actionPrintText(
"Total\t${total%6.2lf}\n"
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText(
"${credit_card_number}\t${total%6.2lf}\n"
)
.actionPrintText(
"Approval Code\t${approval_code}\n"
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText(
"Amount\t${amount%6.2lf}\n"
)
.actionPrintText(
"Total\t${total%6.2lf}\n"
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText(
"Signature\n"
)
.add(
new StarXpandCommand.PrinterBuilder()
.styleAlignment(StarXpandCommand.Printer.Alignment.Center)
.actionPrintImage(
new StarXpandCommand.Printer.ImageParameter("signature.png", 256)
)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(32.0)
.setX(8.0)
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionPrintText("\n")
.styleAlignment(StarXpandCommand.Printer.Alignment.Center)
.actionPrintText(
"${address}\n"
)
.actionPrintText(
"${tel}\n"
)
.actionPrintText(
"${mail}\n"
)
.actionFeed(1.0)
.actionPrintText(
"${url}\n"
)
.actionPrintRuledLine(
new StarXpandCommand.Printer.RuledLineParameter(48.0)
)
.actionFeed(2.0)
.actionPrintText(
"Powered by Star Micronics\n"
)
.actionPrintBarcode(
new StarXpandCommand.Printer.BarcodeParameter("${transaction_id}", StarXpandCommand.Printer.BarcodeSymbology.Code128)
.setPrintHri(true)
)
.actionCut(StarXpandCommand.Printer.CutType.Partial)
)
);
return builder.getCommands();
}
async function _createLabelTemplate(): Promise<string> {
var builder = new StarXpandCommand.StarXpandCommandBuilder();
builder.addDocument(
new StarXpandCommand.DocumentBuilder()
.addPrinter(new StarXpandCommand.PrinterBuilder()
.addPageMode(
new StarXpandCommand.Printer.PageModeAreaParameter(48.0, 30.0),
new StarXpandCommand.PageModeBuilder()
.styleHorizontalPositionTo(4.0)
.actionPrintText("${item_name}\n")
.styleVerticalPositionTo(6.0)
.actionPrintBarcode(
new StarXpandCommand.Printer.BarcodeParameter("${sku}", StarXpandCommand.Printer.BarcodeSymbology.Ean13)
.setHeight(5.0)
.setPrintHri(true)
)
.add(
new StarXpandCommand.PageModeBuilder()
.styleFont(StarXpandCommand.Printer.FontType.B)
.styleVerticalPositionTo(0.0)
.styleHorizontalPositionTo(34.0)
.actionPrintText("EUR")
.styleVerticalPositionTo(0.0)
.styleHorizontalPositionTo(43.0)
.actionPrintText("UK")
)
.add(
new StarXpandCommand.PageModeBuilder()
.styleMagnification(new StarXpandCommand.MagnificationParameter(2, 2))
.stylePrintDirection(StarXpandCommand.Printer.PageModePrintDirection.BottomToTop)
.styleVerticalPositionTo(35.0)
.styleHorizontalPositionTo(5.0)
.actionPrintText("${price_eur%.2lf}")
.styleVerticalPositionTo(43.0)
.styleHorizontalPositionTo(5.0)
.actionPrintText("${price_gbp%.2lf}")
)
.addPageMode(
new StarXpandCommand.Printer.PageModeAreaParameter(32.0, 15.0)
.setY(15.0),
new StarXpandCommand.PageModeBuilder()
.actionPrintText("${maker_information}")
)
)
.actionCut(StarXpandCommand.Printer.CutType.Partial)
)
);
return builder.getCommands();
}
async function _confirmBluetoothPermission(): Promise<boolean> {
var hasPermission = false;
try {
hasPermission = await PermissionsAndroid.check(PermissionsAndroid.PERMISSIONS.BLUETOOTH_CONNECT);
if (!hasPermission) {
const status = await PermissionsAndroid.request(PermissionsAndroid.PERMISSIONS.BLUETOOTH_CONNECT);
hasPermission = status == PermissionsAndroid.RESULTS.GRANTED;
}
}
catch (err) {
console.warn(err);
}
return hasPermission;
}
const RECEIPT1_FIELD_DATA = `
{
"store_name" : " Star Cafe ",
"order_number" : "#2-007",
"time" : "10/16 11:13PM",
"sales_type" : "Walk-in",
"server" : "Jane",
"transaction_id" : "0123456789",
"item_list" : [
{
"name" : "Vanilla Latte",
"unit_price" : 4.99,
"quantity" : 1
},
{
"name" : "Chocolate Chip Cookie",
"unit_price" : 3.25,
"quantity" : 1
}
],
"subtotal" : 8.24,
"tax" : 0.73,
"total" : 8.97,
"credit_card_number" : "VISA 0123",
"approval_code" : "OK2443",
"amount" : 8.97,
"address" : "123 Star Road, City,\\nState 12345",
"tel" : "123-456-7890",
"mail" : "[email protected]",
"url" : "star-m.jp"
}`;
const RECEIPT2_FIELD_DATA = `
{
"store_name" : " Star Cafe ",
"order_number" : "#2-008",
"time" : "02/09 12:40PM",
"sales_type" : "Takeout",
"server" : "Jessica",
"transaction_id" : "0111111111",
"item_list" : [
{
"name" : "Vanilla Latte with caramel sauce",
"unit_price" : 5.99,
"quantity" : 1
},
{
"name" : "Star's Homemade Chocolate Chip Cookie",
"unit_price" : 4.99,
"quantity" : 1
}
],
"subtotal" : 10.98,
"tax" : 0.97,
"total" : 11.95,
"credit_card_number" : "VISA 0456",
"approval_code" : "OK5667",
"amount" : 11.95,
"address" : "123 Star Road, City,\\nState 12345",
"tel" : "123-456-7890",
"mail" : "[email protected]",
"url" : "star-m.jp"
}`;
const RECEIPT3_FIELD_DATA = `
{
"store_name" : " Star Cafe ",
"order_number" : "#2-009",
"time" : "05/23 10:10AM",
"sales_type" : "Takeout",
"server" : "James",
"transaction_id" : "0222222222",
"item_list" : [
{
"name" : "Chai Tea Latte",
"unit_price" : 5.49,
"quantity" : 1
},
{
"name" : "Americano",
"unit_price" : 2.99,
"quantity" : 3
},
{
"name" : "Orange Juice",
"unit_price" : 3.99,
"quantity" : 1
},
{
"name" : "Shortbread Cookies",
"unit_price" : 3.49,
"quantity" : 2
},
{
"name" : "Chocolate Brownie",
"unit_price" : 4.49,
"quantity" : 3
}
],
"subtotal" : 38.9,
"tax" : 3.45,
"total" : 42.35,
"credit_card_number" : "VISA 0789",
"approval_code" : "OK7889",
"amount" : 42.35,
"address" : "123 Star Road, City,\\nState 12345",
"tel" : "123-456-7890",
"mail" : "[email protected]",
"url" : "star-m.jp"
}`;
const LABEL1_FIELD_DATA = `
{
"item_name" : "T-Shirt",
"sku" : "012345678901",
"maker_information" : "Star Clothing: 123 Star Road, City, State 12345",
"price_eur" : 28.9,
"price_gbp" : 22.0
}`;
const LABEL2_FIELD_DATA = `
{
"item_name" : "Necklace",
"sku" : "111111111111",
"maker_information" : "Star Accessories: 456 Star Avenue, City, State 11111",
"price_eur" : 130.0,
"price_gbp" : 110.0
}`;
return (
<View style={{ flex: 1, marginLeft: 20, marginRight: 20, marginTop: 50, marginBottom: 50 }}>
<View style={{ flexDirection: 'row' }}>
<Text style={{ width: 100 }}>Interface</Text>
<View style={{ margin: 10 }}>
<View style={{ flexDirection: 'row', marginTop: 0 }}>
<CheckBox
style={{ marginLeft: 20 }}
value={
interfaceType == InterfaceType.Lan
}
onValueChange={(isChecked) => {
if (isChecked) {
setInterfaceType(InterfaceType.Lan);
}
}}
/>
<Text style={{ marginLeft: 20 }}>LAN</Text>
</View>
<View style={{ flexDirection: 'row', marginTop: 10 }}>
<CheckBox
style={{ marginLeft: 20 }}
value={
interfaceType == InterfaceType.Bluetooth
}
onValueChange={(isChecked) => {
if (isChecked) {
setInterfaceType(InterfaceType.Bluetooth);
}
}}
/>
<Text style={{ marginLeft: 20 }}>Bluetooth</Text>
</View>
<View style={{ flexDirection: 'row', marginTop: 10 }}>
<CheckBox
style={{ marginLeft: 20 }}
value={
interfaceType == InterfaceType.BluetoothLE
}
onValueChange={(isChecked) => {
if (isChecked) {
setInterfaceType(InterfaceType.BluetoothLE);
}
}}
/>
<Text style={{ marginLeft: 20 }}>BluetoothLE</Text>
</View>
<View style={{ flexDirection: 'row', marginTop: 10 }}>
<CheckBox
style={{ marginLeft: 20 }}
value={
interfaceType == InterfaceType.Usb
}
onValueChange={(isChecked) => {
if (isChecked) {
setInterfaceType(InterfaceType.Usb);
}
}}
/>
<Text style={{ marginLeft: 20 }}>USB</Text>
</View>
</View>
</View>
<View style={{ flexDirection: 'row', marginTop: 30 }}>
<Text style={{ width: 100 }}>Identifier</Text>
<TextInput
style={{ width: 200, marginLeft: 20 }}
value={identifier}
onChangeText={(value) => {
setIdentifier(value);
}}
/>
</View>
<View style={{ height: 150, flexDirection: 'column', marginTop: 30 }}>
<Text style={{ height: 30 }}>Template</Text>
<View style={{ margin: 10 }}>
<View style={{ flexDirection: 'row', marginTop: 0 }}>
<CheckBox
value={
templateIndex == 0
}
onValueChange={(isChecked: boolean) => {
if (isChecked) {
setTemplateIndex(0);
setFieldDataIndex(0);
}
}}
/>
<Text style={{ marginLeft: 20 }}>Receipt w/ specifying number of characters</Text>
</View>
<View style={{ flexDirection: 'row', marginTop: 10 }}>
<CheckBox
value={
templateIndex == 1
}
onValueChange={(isChecked: boolean) => {
if (isChecked) {
setTemplateIndex(1);
setFieldDataIndex(0);
}
}}
/>
<Text style={{ marginLeft: 20 }}>Receipt w/o specifying number of characters</Text>
</View>
<View style={{ flexDirection: 'row', marginTop: 10 }}>
<CheckBox
value={
templateIndex == 2
}
onValueChange={(isChecked: boolean) => {
if (isChecked) {
setTemplateIndex(2);
setFieldDataIndex(0);
}
}}
/>
<Text style={{ marginLeft: 20 }}>Label</Text>
</View>
</View>
</View>
<View style={{ height: 120, flexDirection: 'column', marginTop: 30 }}>
<Text style={{ height: 30 }}>Field Data</Text>
<View style={{ margin: 10 }}>
<View style={{ flexDirection: 'row', marginTop: 0 }}>
<CheckBox
value={
fieldDataIndex == 0
}
onValueChange={(isChecked: boolean) => {
if (isChecked) {
setFieldDataIndex(0);
}
}}
/>
{
(() => {
switch (templateIndex) {
case 0: // Receipt w/ specifying number of characters
return <Text style={{ marginLeft: 20 }}>Receipt1</Text>;
case 1: // Receipt w/o specifying number of characters
return <Text style={{ marginLeft: 20 }}>Receipt1</Text>;
case 2: // Label
return <Text style={{ marginLeft: 20 }}>Label1</Text>;
}
})()
}
</View>
<View style={{ flexDirection: 'row', marginTop: 10 }}>
<CheckBox
value={
fieldDataIndex == 1
}
onValueChange={(isChecked: boolean) => {
if (isChecked) {
setFieldDataIndex(1);
}
}}
/>
{
(() => {
switch (templateIndex) {
case 0: // Receipt w/ specifying number of characters
return <Text style={{ marginLeft: 20 }}>Receipt2</Text>;
case 1: // Receipt w/o specifying number of characters
return <Text style={{ marginLeft: 20 }}>Receipt3</Text>;
case 2: // Label
return <Text style={{ marginLeft: 20 }}>Label2</Text>;
}
})()
}
</View>
</View>
</View>
<View style={{ width: 100, marginTop: 20 }}>
<Button
title="Print"
onPress={_onPressPrintButton}
/>
</View>
</View>
);
};