brady_flutter_plugin 2.0.0+1 
brady_flutter_plugin: ^2.0.0+1 copied to clipboard
sdk.bradyid.comThe official Flutter Plugin to integrate the Brady SDK within a Flutter application. The Brady SDK will allow users to discovery, connect, and print to Brady printers.
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:convert';
import 'package:flutter/services.dart';
import 'package:brady_flutter_plugin/brady_flutter_plugin.dart';
import 'package:flutter/services.dart';
import 'package:flutter/services.dart';
import 'package:permission_handler/permission_handler.dart';
Uint8List? previewImage;
void main() {
runApp(const MyApp());
}
class MyApp extends StatefulWidget {
const MyApp({super.key});
@override
State<MyApp> createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
final _bradyFlutterPlugin = BradyFlutterPlugin();
bool showImage = false;
var isTemplate = true;
@override
void initState() {
super.initState();
}
Future<void> discover() async {
Map<Permission, PermissionStatus> statuses = await [
Permission.bluetooth,
Permission.bluetoothConnect,
Permission.bluetoothScan,
Permission.nearbyWifiDevices,
Permission.locationWhenInUse
].request();
_bradyFlutterPlugin.startBlePrinterDiscovery();
_bradyFlutterPlugin.startWifiPrinterDiscovery();
}
Future<void> connect() async {
/// Get a list of all discovered printers and how they were discovered (Bluetooth or Wi-Fi).
/// Could display the list to let a user select one.
Map<String, String> printerMap = await _bradyFlutterPlugin.getPrinters();
bool? connected;
for (var printer in printerMap.keys) {
try {
/**
* The following lines of code show how to implement auto-connect.
*
* "If there was a previously connected printer, find a discovered printer
* matching its name and connect to it."
*
* final printerToConnectTo = _bradyFlutterPlugin.getLastConnectedPrinterName()
* if (printer == printerToConnectTo) {
* final userSelectedProtocol = printerMap[printer] == "BLE" ? true : false;
* final connected = await _bradyFlutterPlugin.connect(printer, userSelectedProtocol);
* }
*/
//TODO: REPLACE THE VALUE BELOW WITH YOUR PRINTER NAME.
if (printer == "M211-PGM2112130501026") {
/**
* You may allow the user to select whether to connect via Bluetooth or Wi-Fi.
* If they select Bluetooth, pass in "true" to the connect method.
* If they select Wi-Fi, pass in "false" to the connect method.
* If you don't give them the option, passing in null ignores the
* protocol and connects to any printer with the matching name
*
* Refer to https://sdk.bradyid.com/supported_printers/ for supported connections.
* For example, an M211 can only connect via Bluetooth so don't give
* an option to connect via Wi-Fi.
*/
final userSelectedProtocol =
printerMap[printer] == "BLE" ? true : false;
connected =
await _bradyFlutterPlugin.connect(printer, userSelectedProtocol);
if (connected == true) {
debugPrint("CONNECTED!");
} else {
debugPrint("FAILED TO CONNECT!");
}
break;
}
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
}
void setTemplate() async {
//TODO: REPLACE THE VALUE BELOW WITH YOUR TEMPLATE NAME.
try {
final byteData =
await rootBundle.load("assets/code128anotexttemplate.BWT");
final bytes = byteData.buffer.asUint8List();
await _bradyFlutterPlugin.setTemplateWithBase64(
base64.encode(bytes), true);
/**
* The commented code below shows how to set an image (png, jpg, etc.) to
* print instead of a template.
*
* final byteData = await rootBundle.load("assets/bitmap_rectangular_barcode.png");
* final bytes = byteData.buffer.asUint8List();
* _bradyFlutterPlugin.setTemplateWithBase64(base64.encode(bytes), false);
*/
} on PlatformException catch (e) {
if (kDebugMode) {
print(
"Error setting the template.\nWhere: ${e.message!}\nDetails: ${e.details}");
}
}
try {
//TODO: REPLACE THE VALUES BELOW WITH YOUR TEMPLATE'S PLACEHOLDER NAME'S.
await _bradyFlutterPlugin.setPlaceholderValue("BARCODE 1", "HELLO WORLD");
} on PlatformException catch (e) {
if (kDebugMode) {
print(
"Error setting a placeholder.\nWhere: ${e.message!}\nDetails: ${e.details}");
}
}
/// How to retrieve Placeholder information from a BWT file (template).
try {
final templateData = await _bradyFlutterPlugin.getTemplateData();
for (var key in templateData.keys) {
debugPrint("getTemplateDataNames() -> $key");
debugPrint("getTemplateDataTypes() -> ${templateData[key]}");
}
} on PlatformException catch (e) {
if (kDebugMode) {
print(
"Error getting template data names.\nWhere: ${e.message!}\nDetails: ${e.details}");
}
}
/// Retrieve all information about the connected printer.
try {
var details = "";
details +=
"Connection Status: ${await _bradyFlutterPlugin.getPrinterStatus()}";
details += " (${await _bradyFlutterPlugin.getConnectionType()})\n";
details +=
"Connection Status Message: ${await _bradyFlutterPlugin.getPrinterStatusMessage()}\n";
details +=
"Connection Status Message Title: ${await _bradyFlutterPlugin.getPrinterStatusMessageTitle()}\n";
details +=
"Connection Status Remedy Explanation Message: ${await _bradyFlutterPlugin.getPrinterStatusRemedyExplanationMessage()}\n";
details +=
"Has Ownership: ${await _bradyFlutterPlugin.getHaveOwnership()}\n";
details += "Printer Name: ${await _bradyFlutterPlugin.getPrinterName()}";
details += " (${await _bradyFlutterPlugin.getPrinterModel()})\n";
details +=
"Last Connected Printer: ${await _bradyFlutterPlugin.getLastConnectedPrinterName()}\n";
details += "Supply Name: ${await _bradyFlutterPlugin.getSupplyName()}\n";
details +=
"Template Supply Name: ${await _bradyFlutterPlugin.getTemplateSupplyName()}\n";
details += "Y Number: ${await _bradyFlutterPlugin.getYNumber()}\n";
details +=
"Supply Dimensions: ${await _bradyFlutterPlugin.getSupplyWidth()}"
"in. x ${await _bradyFlutterPlugin.getSupplyHeight()}in.\n";
details +=
"Remaining Supply: ${await _bradyFlutterPlugin.getSupplyRemainingPercentage()}\n";
details += "Ribbon Name: ${await _bradyFlutterPlugin.getRibbonName()}\n";
details +=
"Remaining Ribbon: ${await _bradyFlutterPlugin.getRibbonRemainingPercentage()}\n";
details +=
"Battery Level: ${await _bradyFlutterPlugin.getBatteryLevelPercentage()}";
details +=
", Charging: ${await _bradyFlutterPlugin.getIsAcConnected()}\n";
details +=
"PreSized: ${await _bradyFlutterPlugin.getIsSupplyPreSized()}\n";
details += "Supplies Match: ${await _bradyFlutterPlugin.suppliesMatch()}";
debugPrint(details);
} on PlatformException catch (e) {
if (kDebugMode) {
print(
"Error getting printer details.\n Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// Prints out the set Template object.
Future<void> printTemplate() async {
try {
final printed = await _bradyFlutterPlugin.print(1, false, true, true);
if (printed == true) {
debugPrint("PRINTING SUCCESSFUL!");
} else {
debugPrint("PRINTING FAILED!");
}
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// Only applicable to M211 and M511. Read documentation at sdk.bradyid.com
Future<void> feedSupply() async {
try {
final fed = await _bradyFlutterPlugin.feedSupply();
if (fed == true) {
debugPrint("FED SUCCESSFUL!");
} else {
debugPrint("FED FAILED!");
}
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// Only applicable to M211 and M511. Read documentation at sdk.bradyid.com
Future<void> cutSupply() async {
try {
final cut = await _bradyFlutterPlugin.cutSupply();
if (cut == true) {
debugPrint("CUT SUCCESSFUL!");
} else {
debugPrint("CUT FAILED!");
}
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// Only applicable to the M211 and M511. Read documentation at sdk.bradyid.com
Future<void> setAutomaticShutoffTime() async {
try {
final setResult = await _bradyFlutterPlugin.setAutomaticShutoffTime(30);
if (setResult == true) {
debugPrint("AUTOMATIC SHUTOFF TIME SET SUCCESSFULLY!");
} else {
debugPrint("AUTOMATIC SHUTOFF TIME SET FAILED!");
}
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// This method is the combination of the two methods below it.
/// disconnect = disconnectWithoutForget + forgetLastConnectedPrinter
Future<void> disconnect() async {
try {
final disconnected = await _bradyFlutterPlugin.disconnect();
if (disconnected == true) {
debugPrint("DISCONNECT SUCCESSFUL!");
} else {
debugPrint("DISCONNECT FAILED!");
}
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// Disconnects from a printer while saving getLastConnectedPrinterName
Future<void> disconnectWithoutForget() async {
try {
final disconnected = await _bradyFlutterPlugin.disconnectWithoutForget();
if (disconnected == true) {
debugPrint("DISCONNECT SUCCESSFUL!");
} else {
debugPrint("DISCONNECT FAILED!");
}
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// This sets the result of getLastConnectedPrinterName to null.
Future<void> forgetLastConnectedPrinter() async {
try {
await _bradyFlutterPlugin.forgetLastConnectedPrinter();
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
/// Shows an image of what will print out.
Future<void> getPreview() async {
try {
var base64 = await _bradyFlutterPlugin.getPreview(200);
previewImage = base64Decode(base64!);
setState(() {
showImage = true;
});
} on PlatformException catch (e) {
if (kDebugMode) {
print("Where: ${e.message!}\nDetails: ${e.details}");
}
}
}
Future<void> getAvailableUpdates() async {
/**
* Each time a change occurs on the connected printer, it will add the property
* to an internal list as a string. Calling getAvailablePrinterUpdates()
* retrieves the list of strings and clears the list. Refer to
* https://sdk.bradyid.com/printer_properties_ios/ to see all property keys.
*/
var updatesList = await _bradyFlutterPlugin.getAvailablePrinterUpdates();
for (int i = 0; i < updatesList.length; i++) {
/**
* For example, you could loop through the updates. When a string
* equals "BatteryChargePercentage", you could update a battery symbol
* in your UI using the value from printerDetails.getBatteryLevelPercentage()..
*/
debugPrint(updatesList[i]);
}
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
appBar: AppBar(
title: const Text('Plugin example app'),
),
body: SingleChildScrollView(
child: Stack(
children: <Widget>[
Column(
children: [
ElevatedButton(
onPressed: () {
discover();
},
child: const Text('Start Discovery')),
ElevatedButton(
onPressed: () {
connect();
},
child: const Text('Connect')),
ElevatedButton(
onPressed: () {
setTemplate();
},
child: const Text('Set Template')),
ElevatedButton(
onPressed: () {
printTemplate();
},
child: const Text('Print')),
ElevatedButton(
onPressed: () {
feedSupply();
},
child: const Text('Feed')),
ElevatedButton(
onPressed: () {
cutSupply();
},
child: const Text('Cut')),
ElevatedButton(
onPressed: () {
setAutomaticShutoffTime();
},
child: const Text('Set Auto Shutoff')),
ElevatedButton(
onPressed: () {
disconnect();
},
child: const Text('Disconnect')),
ElevatedButton(
onPressed: () {
disconnectWithoutForget();
},
child: const Text('Disconnect Without Forget')),
ElevatedButton(
onPressed: () {
forgetLastConnectedPrinter();
},
child: const Text('Forget')),
ElevatedButton(
onPressed: () {
getPreview();
},
child: const Text('Show Print Preview')),
ElevatedButton(
onPressed: () {
getAvailableUpdates();
},
child: const Text('Get Available Updates')),
showImage
? Column(
children: [
Image.memory(previewImage!),
],
)
: const SizedBox(
height: 0,
),
],
),
],
),
),
));
}
}Metadata
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Metadata
The official Flutter Plugin to integrate the Brady SDK within a Flutter application. The Brady SDK will allow users to discovery, connect, and print to Brady printers.
License
unknown (license)
Dependencies
flutter, plugin_platform_interface
