打印机对接完成

android/app/src/main/java/com/szls/lszlgl/MainActivity.java

@@ -10,6 +10,10 @@ import io.flutter.embedding.engine.plugins.util.GeneratedPluginRegister;
 import io.flutter.plugins.BluetoothPlugin;
 
 public class MainActivity extends FlutterActivity {
+
+    static {
+        System.loadLibrary("LabelPrinterSDK");
+    }
     @Override
     public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) {
         super.configureFlutterEngine(flutterEngine);

android/app/src/main/java/io/flutter/plugins/BluetoothPlugin.java

@@ -27,6 +27,8 @@ import com.gengcon.www.jcprintersdk.callback.PrintCallback;
 import com.permissionx.guolindev.PermissionX;
 import com.szls.lszlgl.MainActivity;
 
+import java.io.ByteArrayOutputStream;
+import java.nio.ByteBuffer;
 import java.security.Permission;
 import java.util.ArrayList;
 import java.util.HashMap;
@@ -164,9 +166,13 @@ public class BluetoothPlugin implements FlutterPlugin, MethodChannel.MethodCallH
                 Log.d("ble", "hasBluetoothConnectDevice :" + methodCall.arguments);
                 hasBluetoothConnectDevice(methodCall, result);
                 break;
-            case "startBluetoothPrint":
+            case "startBluetoothPrintBitMap":
                 Log.d("ble", "startBluetoothPrint :" + methodCall.arguments);
-                startBluetoothPrint(methodCall, result);
+                startBluetoothPrintBitMap(methodCall, result);
+                break;
+            case "startBluetoothPrintBarCode":
+                Log.d("ble", "startBluetoothPrintBarCode :" + methodCall.arguments);
+                startBluetoothPrintBarCode(methodCall, result);
                 break;
 
 
@@ -284,8 +290,7 @@ public class BluetoothPlugin implements FlutterPlugin, MethodChannel.MethodCallH
             PrintUtil.setConnectedType(-1);
             int connectResult = 1;
             if (blueDeviceInfo.getDeviceName().contains("BTP")) {
-                BTPPrintUtil btpPrintUtil = new BTPPrintUtil();
-                connectResult = btpPrintUtil.connectBluetoothPrinter(blueDeviceInfo.getDeviceHardwareAddress());
+                connectResult = BTPPrintUtil.connectBluetoothPrinter(blueDeviceInfo.getDeviceHardwareAddress());
             } else {
                 connectResult = PrintUtil.connectBluetoothPrinter(blueDeviceInfo.getDeviceHardwareAddress());
             }
@@ -309,7 +314,7 @@ public class BluetoothPlugin implements FlutterPlugin, MethodChannel.MethodCallH
         }
     }
 
-    void startBluetoothPrint(@NonNull MethodCall methodCall, @NonNull MethodChannel.Result result) {
+    void startBluetoothPrintBitMap(@NonNull MethodCall methodCall, @NonNull MethodChannel.Result result) {
 
         byte[] imageByte = (byte[]) methodCall.arguments;
 
@@ -322,8 +327,26 @@ public class BluetoothPlugin implements FlutterPlugin, MethodChannel.MethodCallH
         }
         BlueDeviceInfo blueDeviceInfo = new BlueDeviceInfo(bluetoothDevice.getName(), bluetoothDevice.getAddress(), itemPosition.getConnectState());
         if(blueDeviceInfo.getDeviceName().contains("BTP")) {
+            BTPPrintUtil.printBitMap(bitmap, blueDeviceInfo.getDeviceName(), result);
+        } else {
+            PrintUtil.printBitMap(bitmap, result);
+        }
+    }
 
-            BTPPrintUtil.printBitMap(imageByte, bitmap.getWidth(), bitmap.getHeight(), result);
+    void startBluetoothPrintBarCode(@NonNull MethodCall methodCall, @NonNull MethodChannel.Result result) {
+
+        byte[] imageByte = (byte[]) methodCall.arguments;
+
+        Log.d("ble", "imageByte:" + imageByte);
+        Bitmap bitmap = Bytes2Bimap(imageByte);
+
+        BluetoothDevice bluetoothDevice = mBluetoothAdapter.getRemoteDevice(itemPosition.getDeviceHardwareAddress());
+        if (ActivityCompat.checkSelfPermission(_applicationContext, Manifest.permission.BLUETOOTH_CONNECT) != PackageManager.PERMISSION_GRANTED) {
+            return;
+        }
+        BlueDeviceInfo blueDeviceInfo = new BlueDeviceInfo(bluetoothDevice.getName(), bluetoothDevice.getAddress(), itemPosition.getConnectState());
+        if(blueDeviceInfo.getDeviceName().contains("BTP")) {
+            BTPPrintUtil.printBitMap(bitmap, blueDeviceInfo.getDeviceName(), result);
         } else {
             PrintUtil.printBitMap(bitmap, result);
         }

android/app/src/main/java/io/flutter/plugins/utils/BTPPrintUtil.java

@@ -8,6 +8,9 @@ import androidx.annotation.NonNull;
 
 import com.snbc.sdk.LabelPrinter;
 
+import java.io.ByteArrayOutputStream;
+import java.nio.ByteBuffer;
+
 import io.flutter.plugin.common.MethodChannel;
 
 public class BTPPrintUtil {
@@ -25,7 +28,7 @@ public class BTPPrintUtil {
      *
      * @return LabelPrinter 实例
      */
-    public  LabelPrinter getInstance() {
+    public static LabelPrinter getInstance() {
         // 双重检查锁定以确保只初始化一次实例
         if (labelPrinter == null) {
             synchronized (BTPPrintUtil.class) {
@@ -44,19 +47,39 @@ public class BTPPrintUtil {
      * @param address 打印机地址
      * @return 成功与否
      */
-    public  int connectBluetoothPrinter(String address) {
-        LabelPrinter   labelPrinter = new LabelPrinter();
+    public static int connectBluetoothPrinter(String address) {
 //        return 1;
         // 获取单例实例以确保线程安全
-        return labelPrinter.ConnectPrinter(7, "04:7F:0E:AD:20:3A", 2);
+        return getInstance().ConnectPrinter(7, address, 4);
+    }
+
+    public static void printBitMap(Bitmap bitmap, String deviceName, @NonNull MethodChannel.Result result) {
+
+        int x = 0;
+        if(deviceName.contains("BTP-UP321")) {
+            x = 0;
+        } else if(deviceName.contains("BTP-P398PLUS")) {
+            x = 40;
+        }
+        int bytes = bitmap.getByteCount();
+        ByteBuffer buf = ByteBuffer.allocate(bytes);
+        bitmap.copyPixelsToBuffer(buf);
+        ByteArrayOutputStream LionData=new ByteArrayOutputStream();
+        bitmap.compress(Bitmap.CompressFormat.PNG, 100, LionData);
+
+        getInstance().SetLabelSize(560,640);
+        int code = getInstance().PrintImageData(x, 0, LionData.toByteArray());
+        getInstance().PrintLabel(1,1);
+        result.success(code == 0 ? true : false);
     }
 
-    public static void printBitMap(byte[] imageByte, int bitmapWidth, int bitmapHeight, @NonNull MethodChannel.Result result) {
+    public  static void printBarCodeWithText(String barCode, String text, @NonNull MethodChannel.Result result) {
 
-//        result.success(1);
-        Log.d("ble", "bitmapWidth："+bitmapWidth+",bitmapHeight:"+bitmapHeight);
-//        int code = getInstance().PrintImageData(bitmapWidth, bitmapHeight, imageByte);
-//        result.success(code);
+        getInstance().SetLabelSize(560,640);
+        labelPrinter.PrintBarcodeQR(80, 20,  0, "SHXM2024007404", 'H', 18, 2);
+        labelPrinter.PrintText(100, 500, "8", "SHXM2024007404", 0, 7, 3, 0);
+        int code = getInstance().PrintLabel(1,1);
+        result.success(code == 0 ? true : false);
     }
 
 }

android/app/src/main/java/io/flutter/plugins/utils/PrintUtil.java

@@ -218,20 +218,16 @@ public class PrintUtil {
     public static void printBitMap(Bitmap bitmap, @NonNull MethodChannel.Result result) {
         if (PrintUtil.isConnection() != 0) {
 //            handler.post(() -> Toast.makeText(MyApplication.getInstance(), "未连接打印机", Toast.LENGTH_SHORT).show());
-            result.success(1);
+            result.success(false);
             return;
         }
 
-//        fragment = new MyDialogLoadingFragment("打印中");
-//        fragment.show(getSupportFragmentManager(), "PRINT");
-
-
         //重置错误状态变量
-        boolean isError = false;
+        final boolean[] isError = {false};
         //重置取消打印状态变量
-        boolean isCancel = false;
+        final boolean[] isCancel = {false};
 
-        int orientation = 0;
+        final int[] orientation = {0};
 
         int pageCount = 1;
         int quantity = 1;
@@ -259,32 +255,34 @@ public class PrintUtil {
                     } else {
                         Log.d("ble", "结束打印失败");
                     }
-                    result.success(0);
+                    result.success(true);
                 }
             }
 
             @Override
             public void onError(int i) {
-                result.success(i == 0 ? 1 : i);
+
             }
 
 
             @Override
             public void onError(int errorCode, int printState) {
                 Log.d("ble", "测试:onError");
-                result.success(errorCode == 0 ? 1 : errorCode);
+                isError[0] = true;
+                result.success(false);
             }
 
             @Override
             public void onCancelJob(boolean isSuccess) {
                 //取消打印成功回调
-                result.success(1);
+                isCancel[0] = true;
             }
 
             @Override
             public void onBufferFree(int pageIndex, int bufferSize) {
-                if (isError || isCancel || pageIndex > pageCount) {
-                    result.success(1);
+                if (isError[0] || isCancel[0] || pageIndex > pageCount) {
+                    Log.d("ble", "测试:onBufferFree error");
+                    return;
                 }
 
                 if (generatedPrintDataPageCount[0] < pageCount) {
@@ -292,7 +290,7 @@ public class PrintUtil {
                     int bitmapWidth = bitmap.getWidth();
                     int bitmapHeight = bitmap.getHeight();
                     Log.d("ble", "bitmapWidth："+bitmapWidth+",bitmapHeight:"+bitmapHeight);
-                    PrintUtil.getInstance().commitImageData(orientation, bitmap, (int) (bitmapWidth / printMultiple), (int) (bitmapHeight / printMultiple), 1, 0, 0, 0, 0, "");
+                    PrintUtil.getInstance().commitImageData(orientation[0], bitmap, (int) (bitmapWidth / printMultiple), (int) (bitmapHeight / printMultiple), 1, 0, 0, 0, 0, "");
                 }
             }
         });

lib/config/pics.dart

@@ -33,3 +33,10 @@ const String imgUserCenterSetting = 'assets/images/user_center_setting.webp';
 const String imgItemArrowRight = 'assets/images/item_arrow_right.webp';
 // 列表项下箭头
 const String imgItemArrowDown = 'assets/images/item_arrow_down.webp';
+
+
+// 搜索图标
+const String imgBleSearch = 'assets/images/search_ble.png';
+// 打印图标
+const String imgBlePrint = 'assets/images/print_ble.png';
+

lib/drfit/dao/device_info_table_dao.dart

@@ -9,7 +9,7 @@ class DeviceInfoTableDao extends DatabaseAccessor<MyDatabase> {
   DeviceInfoTableDao(MyDatabase db) : super(db);
 
   Future<int> addOneDeviceComp(DeviceInfoTableCompanion deviceInfoTableCompanion) async {
-    return into(db.deviceInfoTable).insert(deviceInfoTableCompanion);
+    return into(db.deviceInfoTable).insert(deviceInfoTableCompanion, mode: InsertMode.insertOrReplace);
   }
 
 

lib/drfit/database.dart

@@ -24,16 +24,10 @@ class MyDatabase extends _$MyDatabase {
 
 LazyDatabase _openConnection() {
 
-  getApplicationDocumentsDirectory().then((value) {
-    logger.d('==============zhouzhou 111 ${value.path}');
-  });
-
-
   return LazyDatabase(() async {
-    logger.d('==============zhouzhou');
 
     final documentsDir = await getApplicationDocumentsDirectory();
-    final file = File(p.join(documentsDir.path, 'db.sqlite'));
+    final file = File(p.join(documentsDir.path, 'myDatabase.db'));
 
     return NativeDatabase.createInBackground(file);
   });

lib/main.dart

@@ -20,7 +20,7 @@ late MyDatabase database;
 void main() async {
   logger = Logger(printer: PrettyPrinter(methodCount: 0));
 
-  database = MyDatabase();
+
   // database = MyDatabase(NativeDatabase.memory());
 
   initReportException(() async {
@@ -31,6 +31,7 @@ void main() async {
     ]);
 
     runApp(const MyApp());
+    database = MyDatabase();
   });
 }
 

lib/page/print/connect_print_page.dart

@@ -39,125 +39,8 @@ class ConnectPrintPage extends StatefulWidget {
 
 class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
 
-  late List<ServiceModel> serviceList;
-  late List<BlueDeviceInfo> deviceList;
-  late List<String> deviceMacList;
 
-  String scanDeviceState = '';
-
-  @override
-  void initState() {
-    super.initState();
-    serviceList = [
-      ServiceModel(name: '搜索', icon: imgHomeListPzjc, onTap: () => startScan()),
-    ];
-    deviceList = [];
-    deviceMacList = [];
-
-     PrintService.hasBluetoothConnectDevice().then((result) {
-       if(result == false) {
-         PrintService.connectedDeviceList = [];
-         PrintService.connectedDeviceMacList = [];
-       }
-     });
-  }
-
-  /// 去搜索
-  Future<void> startScan() async {
-
-    setState(() {
-      deviceList = [];
-      deviceMacList = [];
-    });
-    await PrintService.startBluetoothDiscovery();
-  }
-
-  Future<int> savaToSqlite(BlueDeviceInfo deviceInfo) async {
-    DeviceInfoTableCompanion tableCompanion = ModelFactory.convertToTSlideComp(deviceInfo.deviceMac, deviceInfo.deviceName);
-    return await database.deviceInfoTableDao.addOneDeviceComp(tableCompanion);
-  }
-
-  /// 去连接
-  Future<void> startConnect(BlueDeviceInfo deviceInfo) async {
-    if(deviceInfo.connectStateStr == '未配对') {
-      MyNavigator.showLoading(msg: '配对中...');
-      await PrintService.startBluetoothPair(deviceInfo);
-    } else if(deviceInfo.connectStateStr == '已配对') {
-      MyNavigator.showLoading(msg: '连接中...');
-      int connectResult =  await PrintService.startBluetoothConnect(deviceInfo);
-      if(connectResult == 0) { // 连接成功
-        MyNavigator.dismiss();
-        MyNavigator.showToast('连接成功');
-        deviceInfo.connectSuccess();
-        //addOneSlideComp
-
-        if(deviceMacList.contains(deviceInfo.deviceMac)) {
-          setState(() {
-            deviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
-            deviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
-          });
-        }
-        setState(() {
-          PrintService.connectedDeviceMacList.add(deviceInfo.deviceMac);
-          PrintService.connectedDeviceList.add(deviceInfo);
-        });
-        await savaToSqlite(deviceInfo); // 保存记录到数据库
-      } else {
-        MyNavigator.dismiss();
-        MyNavigator.showToast('连接失败');
-      }
-    } else if(deviceInfo.connectStateStr == '断开') {
-      int connectResult =  await PrintService.endBluetoothConnect(deviceInfo);
-      if(connectResult == 0) {  // 断开成功
-        deviceInfo.disConnectSuccess();
-        if(PrintService.connectedDeviceMacList.contains(deviceInfo.deviceMac)) {
-          setState(() {
-            PrintService.connectedDeviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
-            PrintService.connectedDeviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
-          });
-        }
-        setState(() {
-          deviceMacList.add(deviceInfo.deviceMac);
-          deviceList.add(deviceInfo);
-        });
-      }
-    }
-  }
-
-
-
-  @override
-  void onInit() {
-
-    BluetoothPlugin.instance.onReceiveDataStream.listen((deviceInfo) {
-      if(deviceInfo != null) {
-        if(deviceMacList.contains(deviceInfo.deviceMac)) {
-          setState(() {
-            deviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
-            deviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
-          });
-        }
-        setState(() {
-          deviceMacList.add(deviceInfo.deviceMac);
-          deviceList.add(deviceInfo);
-        });
-      }
-    });
-
-    BluetoothPlugin.instance.onDeviceStateStream.listen((deviceState) {
-      if(deviceState == DeviceState.pairEnd) {
-        MyNavigator.dismiss();
-      }
-      setState(() {
-        scanDeviceState = deviceState ?? "";
-      });
-    });
-  }
-
-  @override
-  void onDestroy() {
-
-  }
+  
 
   @override
   Widget build(BuildContext context) {
@@ -166,95 +49,47 @@ class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
         children: [
           myAppBar(title: '连接打印机'),
           const SizedBox(height: 18),
-          ...List.generate(
-            serviceList.length,
-                (index) => buildServiceItem(serviceList[index]),
-          ).toList(),
-          const Text('已连接打印机'),
-          ...List.generate(
-            PrintService.connectedDeviceList.length,
-                (index) => buildDeviceItem(PrintService.connectedDeviceList[index]),
-          ).toList(),
-          const Text('可用打印机'),
-          ...List.generate(
-            deviceList.length,
-                (index) => buildDeviceItem(deviceList[index]),
-          ).toList(),
+          // ...List.generate(
+          //   serviceList.length,
+          //       (index) => buildServiceItem(serviceList[index]),
+          // ).toList(),
+          
         ],
       ),
     );
   }
 
-  Widget buildServiceItem(ServiceModel service) {
-    return GestureDetector(
-      onTap: service.onTap,
-      child: Container(
-        margin: const EdgeInsets.only(left: 12, right: 12, bottom: 22),
-        padding: const EdgeInsets.symmetric(vertical: 20, horizontal: 40),
-        clipBehavior: Clip.hardEdge,
-        decoration: BoxDecoration(
-          borderRadius: const BorderRadius.all(Radius.circular(12)),
-          boxShadow: [BoxShadow(color: Colors.black.withOpacity(0.1), offset: const Offset(0, 5), blurRadius: 4)],
-          image: const DecorationImage(image: AssetImage(imgHomeListBg), fit: BoxFit.fill),
-        ),
-        child: Row(
-          children: [
-            Image.asset(service.icon, height: 64),
-            const SizedBox(width: 12),
-            Expanded(
-              child: Column(
-                mainAxisSize: MainAxisSize.min,
-                children: [
-                  Text(
-                    "${service.name}${scanDeviceState == DeviceState.scanStart ? "中..." : ""}",
-                    textAlign: TextAlign.center,
-                    style: const TextStyle(color: Color(0xFF333333), fontSize: 20, fontWeight: FontWeight.w500),
-                  ),
-                ],
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-
-  Widget buildDeviceItem(BlueDeviceInfo deviceInfo) {
-    return GestureDetector(
-      onTap: () {
-        // 连接
-        startConnect(deviceInfo);
-      },
-      child: Container(
-        margin: const EdgeInsets.only(left: 12, right: 12, bottom: 22),
-        padding: const EdgeInsets.symmetric(vertical: 10),
-        clipBehavior: Clip.hardEdge,
-        decoration: BoxDecoration(
-          borderRadius: const BorderRadius.all(Radius.circular(12)),
-          boxShadow: [BoxShadow(color: Colors.black.withOpacity(0.1), offset: const Offset(0, 5), blurRadius: 4)],
-          image: const DecorationImage(image: AssetImage(imgHomeListBg), fit: BoxFit.fill),
-        ),
-        child: Row(
-          mainAxisAlignment: MainAxisAlignment.spaceAround,
-          children: [
-            Text(
-              deviceInfo.deviceName,
-              textAlign: TextAlign.center,
-              style: const TextStyle(color: Color(0xFF333333), fontSize: 15, fontWeight: FontWeight.w500),
-            ),
-            Text(
-              deviceInfo.deviceMac,
-              textAlign: TextAlign.center,
-              style: const TextStyle(color: Color(0xFF333333), fontSize: 15, fontWeight: FontWeight.w500),
-            ),
-            Text(
-              deviceInfo.connectStateStr,
-              textAlign: TextAlign.center,
-              style: const TextStyle(color: Color(0xFF333333), fontSize: 15, fontWeight: FontWeight.w500),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
+  // Widget buildServiceItem(ServiceModel service) {
+  //   return GestureDetector(
+  //     onTap: service.onTap,
+  //     child: Container(
+  //       margin: const EdgeInsets.only(left: 12, right: 12, bottom: 22),
+  //       padding: const EdgeInsets.symmetric(vertical: 20, horizontal: 40),
+  //       clipBehavior: Clip.hardEdge,
+  //       decoration: BoxDecoration(
+  //         borderRadius: const BorderRadius.all(Radius.circular(12)),
+  //         boxShadow: [BoxShadow(color: Colors.black.withOpacity(0.1), offset: const Offset(0, 5), blurRadius: 4)],
+  //         image: const DecorationImage(image: AssetImage(imgHomeListBg), fit: BoxFit.fill),
+  //       ),
+  //       child: Row(
+  //         children: [
+  //           Image.asset(service.icon, height: 64),
+  //           const SizedBox(width: 12),
+  //           Expanded(
+  //             child: Column(
+  //               mainAxisSize: MainAxisSize.min,
+  //               children: [
+  //                 Text(
+  //                   "${service.name}${scanDeviceState == DeviceState.scanStart ? "中..." : ""}",
+  //                   textAlign: TextAlign.center,
+  //                   style: const TextStyle(color: Color(0xFF333333), fontSize: 20, fontWeight: FontWeight.w500),
+  //                 ),
+  //               ],
+  //             ),
+  //           ),
+  //         ],
+  //       ),
+  //     ),
+  //   );
+  // }
 }

lib/page/print/print_page.dart

@@ -5,8 +5,13 @@ import 'package:lszlgl/page/print/connect_print_page.dart';
 import 'package:signature/signature.dart';
 import 'package:lszlgl/widget/button.dart';
 
+import '../../drfit/database.dart';
+import '../../drfit/model_factory.dart';
+import '../../main.dart';
+import '../../plugin/bluetooth_plugin.dart';
 import '../../service/print_service.dart';
 import '../home/home_page.dart';
+import 'dart:ui' as ui;
 
 class PrintPageArgs {
   /// 二维码数据
@@ -37,30 +42,146 @@ class _PrintPageState extends BaseLifecycleState<PrintPage> {
 
   late List<ServiceModel> serviceList;
 
+  late List<BlueDeviceInfo> deviceList;
+  late List<String> deviceMacList;
+
+  String scanDeviceState = '';
+
   @override
   void initState() {
     super.initState();
     serviceList = [
-      ServiceModel(name: '连接', icon: imgHomeListPzjc, onTap: () => startConnect()),
-      ServiceModel(name: '打印', icon: imgHomeListZcjy, onTap: () => startPrint()),
+      ServiceModel(name: '搜索', icon: imgBleSearch, onTap: () => startScan()),
+      ServiceModel(name: '打印', icon: imgBlePrint, onTap: () => startPrint()),
     ];
-  }
+    deviceList = [];
+    deviceMacList = [];
 
-  Future<void> startConnect() async {
-
-    var args = ConnectPrintPageArgs(count: 0);
-    await MyRouter.startConnectPrint(args: args);
+    PrintService.hasBluetoothConnectDevice().then((result) {
+      if(result == false) {
+        PrintService.connectedDeviceList = [];
+        PrintService.connectedDeviceMacList = [];
+      }
+    });
   }
 
   /// 去打印
   Future<void> startPrint() async {
 
-    await PrintService.startBluetoothPrint(widget.args.bytes!);
+
+    int targetWidth = 560;
+    if(PrintService.connectedDeviceList.last.deviceName.contains("BTP-UP321")) {
+      targetWidth = 500;
+    }
+
+    final codec = await ui.instantiateImageCodec(
+      widget.args.bytes!,
+      targetHeight: 590,  // 640
+      targetWidth: targetWidth, // 560
+    );
+
+    final smallImage = (await codec.getNextFrame()).image;
+    ByteData? smallBytes = await smallImage.toByteData(format: ui.ImageByteFormat.png);
+    Uint8List? smallUint8List = smallBytes?.buffer.asUint8List();
+
+
+    MyNavigator.showLoading(msg: '打印中...');
+    await PrintService.startBluetoothPrintBitMap(smallUint8List!);
+    MyNavigator.dismiss();
+    MyNavigator.showToast('打印成功');
+  }
+
+  /// 去搜索
+  Future<void> startScan() async {
+
+    setState(() {
+      deviceList = [];
+      deviceMacList = [];
+    });
+    await PrintService.startBluetoothDiscovery();
+  }
+
+  Future<int> savaToSqlite(BlueDeviceInfo deviceInfo) async {
+    DeviceInfoTableCompanion tableCompanion = ModelFactory.convertToTSlideComp(deviceInfo.deviceMac, deviceInfo.deviceName);
+    return await database.deviceInfoTableDao.addOneDeviceComp(tableCompanion);
+  }
+
+  /// 去连接
+  Future<void> startConnect(BlueDeviceInfo deviceInfo) async {
+    if(deviceInfo.connectStateStr.contains('未配对')) {
+      MyNavigator.showLoading(msg: '配对中...');
+      await PrintService.startBluetoothPair(deviceInfo);
+    } else if(deviceInfo.connectStateStr.contains('已配对')) {
+      MyNavigator.showLoading(msg: '连接中...');
+      int connectResult =  await PrintService.startBluetoothConnect(deviceInfo);
+      if(connectResult == 0) { // 连接成功
+        MyNavigator.dismiss();
+        MyNavigator.showToast('连接成功');
+        deviceInfo.connectSuccess();
+        //addOneSlideComp
+
+        if(deviceMacList.contains(deviceInfo.deviceMac)) {
+          setState(() {
+            deviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
+            deviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
+          });
+        }
+        setState(() {
+          PrintService.connectedDeviceMacList.add(deviceInfo.deviceMac);
+          PrintService.connectedDeviceList.add(deviceInfo);
+        });
+        await savaToSqlite(deviceInfo); // 保存记录到数据库
+      } else {
+        MyNavigator.dismiss();
+        MyNavigator.showToast('连接失败');
+      }
+    } else if(deviceInfo.connectStateStr.contains('断开')) {
+      int connectResult =  await PrintService.endBluetoothConnect(deviceInfo);
+      if(connectResult == 0) {  // 断开成功
+        deviceInfo.disConnectSuccess();
+        if(PrintService.connectedDeviceMacList.contains(deviceInfo.deviceMac)) {
+          setState(() {
+            PrintService.connectedDeviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
+            PrintService.connectedDeviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
+          });
+        }
+        setState(() {
+          deviceMacList.add(deviceInfo.deviceMac);
+          deviceList.add(deviceInfo);
+        });
+      }
+    }
   }
 
   @override
   void onInit() {
 
+    BluetoothPlugin.instance.onReceiveDataStream.listen((deviceInfo) {
+      if(deviceInfo != null) {
+        if(deviceMacList.contains(deviceInfo.deviceMac)) {
+          setState(() {
+            deviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
+            deviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
+          });
+        }
+        setState(() {
+          // 只显示支持的打印机
+          if(deviceInfo.deviceName.contains('BTP') || deviceInfo.deviceName.contains('B3S')) {
+            deviceMacList.add(deviceInfo.deviceMac);
+            deviceList.add(deviceInfo);
+          }
+        });
+      }
+    });
+
+    BluetoothPlugin.instance.onDeviceStateStream.listen((deviceState) {
+      if(deviceState == DeviceState.pairEnd) {
+        MyNavigator.dismiss();
+      }
+      setState(() {
+        scanDeviceState = deviceState ?? "";
+      });
+    });
   }
 
   @override
@@ -78,10 +199,21 @@ class _PrintPageState extends BaseLifecycleState<PrintPage> {
         children: [
           myAppBar(title: '打印二维码'),
           const SizedBox(height: 18),
+          buildServiceItem(serviceList[0]),
+          const Text('已连接打印机'),
+          ...List.generate(
+            PrintService.connectedDeviceList.length,
+                (index) => buildDeviceItem(PrintService.connectedDeviceList[index]),
+          ).toList(),
+          const Text('可用打印机'),
           ...List.generate(
-            serviceList.length,
-                (index) => buildServiceItem(serviceList[index]),
+            deviceList.length,
+                (index) => buildDeviceItem(deviceList[index]),
           ).toList(),
+          Offstage(
+            offstage: PrintService.connectedDeviceList.isEmpty,
+            child: buildServiceItem(serviceList[1]),
+          )
         ],
       ),
     );
@@ -108,20 +240,10 @@ class _PrintPageState extends BaseLifecycleState<PrintPage> {
                 mainAxisSize: MainAxisSize.min,
                 children: [
                   Text(
-                    service.name,
+                    "${service.name}${(service.name.contains('搜索')&&scanDeviceState == DeviceState.scanStart) ? "中..." : ""}",
                     textAlign: TextAlign.center,
                     style: const TextStyle(color: Color(0xFF333333), fontSize: 20, fontWeight: FontWeight.w500),
                   ),
-                  service.nameEn != null
-                      ? Padding(
-                    padding: const EdgeInsets.only(top: 4),
-                    child: Text(
-                      service.nameEn!,
-                      textAlign: TextAlign.center,
-                      style: const TextStyle(color: Color(0xFF333333), fontSize: 12, fontWeight: FontWeight.w500),
-                    ),
-                  )
-                      : const SizedBox.shrink(),
                 ],
               ),
             ),
@@ -130,4 +252,38 @@ class _PrintPageState extends BaseLifecycleState<PrintPage> {
       ),
     );
   }
+
+  Widget buildDeviceItem(BlueDeviceInfo deviceInfo) {
+    return GestureDetector(
+      onTap: () {
+        // 连接
+        startConnect(deviceInfo);
+      },
+      child: Container(
+        margin: const EdgeInsets.only(left: 12, right: 12, bottom: 22),
+        padding: const EdgeInsets.symmetric(vertical: 10),
+        clipBehavior: Clip.hardEdge,
+        decoration: BoxDecoration(
+          borderRadius: const BorderRadius.all(Radius.circular(12)),
+          boxShadow: [BoxShadow(color: Colors.black.withOpacity(0.1), offset: const Offset(0, 5), blurRadius: 4)],
+          image: const DecorationImage(image: AssetImage(imgHomeListBg), fit: BoxFit.fill),
+        ),
+        child: Row(
+          mainAxisAlignment: MainAxisAlignment.spaceAround,
+          children: [
+            Text(
+              deviceInfo.deviceName,
+              textAlign: TextAlign.center,
+              style: const TextStyle(color: Color(0xFF333333), fontSize: 15, fontWeight: FontWeight.w500),
+            ),
+            Text(
+              deviceInfo.connectStateStr,
+              textAlign: TextAlign.center,
+              style: const TextStyle(color: Color(0xFF333333), fontSize: 15, fontWeight: FontWeight.w500),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
 }

lib/page/sample_task/reap_sample_detail/reap_sample_task_page.dart

@@ -202,15 +202,8 @@ class _ReapSampleTaskPageState extends BaseLifecycleState<ReapSampleTaskPage> wi
   Future<void> printPic(String? name) async {
 
     Uint8List? bytes = await FileUtils.getBitmapFromContext(ewmKey.currentContext);
-    final codec = await ui.instantiateImageCodec(
-      bytes!,
-      targetHeight: 590,
-      targetWidth: 580,
-    );
-    final smallImage = (await codec.getNextFrame()).image;
-    ByteData? smallBytes = await smallImage.toByteData(format: ui.ImageByteFormat.png);
-    Uint8List? smallUint8List = smallBytes?.buffer.asUint8List();
-    var args = PrintPageArgs(bytes: smallUint8List);
+
+    var args = PrintPageArgs(bytes: bytes);
     await MyRouter.startPrint(args: args);
   }
 

lib/plugin/bluetooth_plugin.dart

@@ -82,12 +82,21 @@ class BluetoothPlugin {
 
 
   //开始打印
-  Future<int> startBluetoothPrint(Uint8List bytes) async {
+  Future<bool> startBluetoothPrintBitMap(Uint8List bytes) async {
 
     if (Platform.isIOS) {
-      return 0;
+      return false;
+    }
+    return _channel.invokeMethod('startBluetoothPrintBitMap', bytes).then<bool>((d) => d);
+  }
+
+  //开始打印
+  Future<bool> startBluetoothPrintBarCodeWithText(String barCode, String text) async {
+
+    if (Platform.isIOS) {
+      return false;
     }
-    return _channel.invokeMethod('startBluetoothPrint', bytes).then<int>((d) => d);
+    return _channel.invokeMethod('startBluetoothPrintBarCodeWithText', {"barCode": barCode, "text": text}).then<bool>((d) => d);
   }
 
 
@@ -145,16 +154,16 @@ class BlueDeviceInfo {
   String get connectStateStr {
 
     if(connectState == '10') {
-      _connectStateStr = "未配对";
+      _connectStateStr = "未配对(点击进行配对)";
     }
     if(connectState == '11') {
       _connectStateStr = "配对中";
     }
     if(connectState == '12') {
-      _connectStateStr = "已配对";
+      _connectStateStr = "已配对(点击进行连接)";
     }
     if(connectState == '13') {
-      _connectStateStr = "断开";
+      _connectStateStr = "断开(点击断开连接）";
     }
     return _connectStateStr ?? "未知";
   }

lib/service/print_service.dart

@@ -118,16 +118,28 @@ class PrintService {
     }
   }
 
-  //开始打印
-  static Future<int> startBluetoothPrint(Uint8List bytes) async {
+  //开始打印图片
+  static Future<bool> startBluetoothPrintBitMap(Uint8List bytes) async {
 
     if(await canExecAction()) {
-      return await BluetoothPlugin.instance.startBluetoothPrint(bytes);
+       return await BluetoothPlugin.instance.startBluetoothPrintBitMap(bytes);
     } else {
-      return 0;
+      return false;
     }
   }
 
+  //开始打印二维码和文本
+  static Future<bool> startBluetoothPrintBarCodeWithText(String barCode, String text) async {
+
+    if(await canExecAction()) {
+      return await BluetoothPlugin.instance.startBluetoothPrintBarCodeWithText(barCode, text);
+    } else {
+      return false;
+    }
+  }
+
+
+
 
 
 

pubspec.yaml

@@ -91,6 +91,8 @@ dependencies:
   image_gallery_saver: ^2.0.3
   # 数据库
   drift: ^2.18.0
+  #
+  sqlite3_flutter_libs: ^0.5.0
 
 dev_dependencies:
   flutter_test: