蓝牙打印完成

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

@@ -14,8 +14,6 @@ public class MainActivity extends FlutterActivity {
     public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) {
         super.configureFlutterEngine(flutterEngine);
 
-
-
         Log.e("AAAA", ">>> configureFlutterEngine");
         GeneratedPluginRegister.registerGeneratedPlugins(flutterEngine);
 

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

@@ -10,6 +10,8 @@ import android.content.Intent;
 import android.content.IntentFilter;
 import android.content.SharedPreferences;
 import android.content.pm.PackageManager;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.location.LocationManager;
 import android.os.Build;
 import android.text.TextUtils;
@@ -21,10 +23,13 @@ import androidx.annotation.NonNull;
 import androidx.core.app.ActivityCompat;
 import androidx.fragment.app.FragmentActivity;
 
+import com.gengcon.www.jcprintersdk.callback.PrintCallback;
 import com.permissionx.guolindev.PermissionX;
 import com.szls.lszlgl.MainActivity;
 
 import java.security.Permission;
+import java.util.ArrayList;
+import java.util.HashMap;
 import java.util.List;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.LinkedBlockingDeque;
@@ -154,6 +159,17 @@ public class BluetoothPlugin implements FlutterPlugin, MethodChannel.MethodCallH
                 Log.d("ble", "endBluetoothConnect :"+methodCall.arguments);
                 endBluetoothConnect(methodCall, result);
                 break;
+            case "hasBluetoothConnectDevice":
+                Log.d("ble", "hasBluetoothConnectDevice :"+methodCall.arguments);
+                hasBluetoothConnectDevice(methodCall, result);
+                break;
+            case "startBluetoothPrint":
+                Log.d("ble", "startBluetoothPrint :"+methodCall.arguments);
+                startBluetoothPrint(methodCall, result);
+                break;
+
+
+
 
 
 
@@ -280,6 +296,125 @@ public class BluetoothPlugin implements FlutterPlugin, MethodChannel.MethodCallH
         result.success(0);
     }
 
+    void hasBluetoothConnectDevice(@NonNull MethodCall methodCall, @NonNull MethodChannel.Result result) {
+        if (PrintUtil.isConnection() == 0 && PrintUtil.getConnectedType()==0) {
+            Log.d("ble", "测试:配对状态改变:判断连接状态 2" );
+             result.success(true);
+        }else {
+            Log.d("ble", "测试:配对状态改变:判断连接状态4 " );
+            result.success(false);
+        }
+    }
+
+    void startBluetoothPrint(@NonNull MethodCall methodCall, @NonNull MethodChannel.Result result) {
+
+        byte[] imageByte = (byte[]) methodCall.arguments;
+
+        Log.d("ble", "imageByte:" + imageByte);
+        Bitmap bitmap = Bytes2Bimap(imageByte);
+
+        PrintUtil.getInstance().drawEmptyLabel(40, 60, 0, "");
+        if (PrintUtil.isConnection() != 0) {
+//            handler.post(() -> Toast.makeText(MyApplication.getInstance(), "未连接打印机", Toast.LENGTH_SHORT).show());
+            return;
+        }
+
+//        fragment = new MyDialogLoadingFragment("打印中");
+//        fragment.show(getSupportFragmentManager(), "PRINT");
+
+
+        //重置错误状态变量
+        boolean isError = false;
+        //重置取消打印状态变量
+        boolean isCancel = false;
+
+        int orientation = 0;
+
+        int pageCount = 1;
+        int quantity = 1;
+        int printMultiple = 8;
+        final int[] generatedPrintDataPageCount = {0};
+        int totalQuantity = pageCount * quantity;
+
+        //setTotalQuantityOfPrints已废弃，使用方法含义更明确的setTotalPrintQuantity
+        PrintUtil.getInstance().setTotalPrintQuantity(totalQuantity);
+        /*
+         * 参数1：打印浓度 ，参数2:纸张类型 参数3:打印模式
+         * 打印浓度 B50/B50W/T6/T7/T8 建议设置6或8，Z401/B32建议设置8，B3S/B21/B203/B1建议设置3
+         */
+        PrintUtil.getInstance().startPrintJob(3, 3, 1, new PrintCallback() {
+            @Override
+            public void onProgress(int pageIndex, int quantityIndex, HashMap<String, Object> hashMap) {
+//                handler.post(() -> fragment.setStateStr("打印进度:已打印到第" + pageIndex + "页,第" + quantityIndex + "份"));
+                Log.d("ble", "测试：打印进度:已打印到第: " + pageIndex);
+                //打印进度回调
+                if (pageIndex == pageCount && quantityIndex == quantity) {
+                    Log.d("ble", "测试:onProgress: 结束打印");
+                    //endJob已废弃，使用方法含义更明确的endPrintJob
+                    if (PrintUtil.getInstance().endPrintJob()) {
+                        Log.d("ble", "结束打印成功");
+                    } else {
+                        Log.d("ble", "结束打印失败");
+                    }
+//                    handlePrintResult(fragment, "打印成功");
+                }
+            }
+
+            @Override
+            public void onError(int i) {
+
+            }
+
+
+            @Override
+            public void onError(int errorCode, int printState) {
+                Log.d("ble", "测试:onError");
+//                isError = true;
+//                String errorMsg = ERROR_MESSAGES.getOrDefault(errorCode, "");
+//                handlePrintResult(fragment, errorMsg);
+            }
+
+            @Override
+            public void onCancelJob(boolean isSuccess) {
+                //取消打印成功回调
+//                isCancel = true;
+            }
+
+            @Override
+            public void onBufferFree(int pageIndex, int bufferSize) {
+                if (isError || isCancel || pageIndex > pageCount) {
+                    return;
+                }
+
+                if (generatedPrintDataPageCount[0] < pageCount) {
+//                    ArrayList<Dish> dishList = new ArrayList<>();
+//                    dishList.add(new Dish("辣椒炒肉", "中辣", 29.9, 1));
+//                    dishList.add(new Dish("土豆牛腩", "中辣", 49.9, 1));
+//
+//                    Bitmap bitmap = ImgUtil.Companion.generatePosReceiptImage(dishList);
+
+                    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, "");
+
+
+                }
+
+
+            }
+        });
+
+    }
+
+    public Bitmap Bytes2Bimap(byte[] b) {
+        if (b.length != 0) {
+            return BitmapFactory.decodeByteArray(b, 0, b.length);
+        } else {
+            return null;
+        }
+    }
+
     private final BroadcastReceiver receiver = new BroadcastReceiver() {
 
         @SuppressLint("MissingPermission")

lib/page/home/home_page.dart

@@ -23,9 +23,7 @@ class _HomePageState extends BaseState<HomePage> with AutomaticKeepAliveClientMi
   late List<ServiceModel> serviceList;
 
   void startSampleList(StepType type) async {
-    var args = PrintPageArgs(count: 0);
-    await MyRouter.startPrint(args: args);
-    // MyRouter.startSampleTaskList(SampleTaskListTabPageArgs(type: type));
+    MyRouter.startSampleTaskList(SampleTaskListTabPageArgs(type: type));
   }
 
   @override

lib/page/print/connect_print_page.dart

@@ -41,9 +41,6 @@ class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
   late List<BlueDeviceInfo> deviceList;
   late List<String> deviceMacList;
 
-  late List<BlueDeviceInfo> connectedDeviceList;
-  late List<String> connectedDeviceMacList;
-
   String scanDeviceState = '';
 
   @override
@@ -54,8 +51,13 @@ class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
     ];
     deviceList = [];
     deviceMacList = [];
-    connectedDeviceList = [];
-    connectedDeviceMacList = [];
+
+     PrintService.hasBluetoothConnectDevice().then((result) {
+       if(result == false) {
+         PrintService.connectedDeviceList = [];
+         PrintService.connectedDeviceMacList = [];
+       }
+     });
   }
 
   /// 去搜索
@@ -87,8 +89,8 @@ class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
           });
         }
         setState(() {
-          connectedDeviceMacList.add(deviceInfo.deviceMac);
-          connectedDeviceList.add(deviceInfo);
+          PrintService.connectedDeviceMacList.add(deviceInfo.deviceMac);
+          PrintService.connectedDeviceList.add(deviceInfo);
         });
       } else {
         MyNavigator.dismiss();
@@ -98,10 +100,10 @@ class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
       int connectResult =  await PrintService.endBluetoothConnect(deviceInfo);
       if(connectResult == 0) {  // 断开成功
         deviceInfo.disConnectSuccess();
-        if(connectedDeviceMacList.contains(deviceInfo.deviceMac)) {
+        if(PrintService.connectedDeviceMacList.contains(deviceInfo.deviceMac)) {
           setState(() {
-            connectedDeviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
-            connectedDeviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
+            PrintService.connectedDeviceMacList.removeWhere((element) => element == deviceInfo.deviceMac);
+            PrintService.connectedDeviceList.removeWhere((element) => element.deviceMac == deviceInfo.deviceMac);
           });
         }
         setState(() {
@@ -158,8 +160,8 @@ class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
           ).toList(),
           const Text('已连接打印机'),
           ...List.generate(
-            connectedDeviceList.length,
-                (index) => buildDeviceItem(connectedDeviceList[index]),
+            PrintService.connectedDeviceList.length,
+                (index) => buildDeviceItem(PrintService.connectedDeviceList[index]),
           ).toList(),
           const Text('可用打印机'),
           ...List.generate(

lib/page/print/print_page.dart

@@ -9,14 +9,14 @@ import '../../service/print_service.dart';
 import '../home/home_page.dart';
 
 class PrintPageArgs {
-  /// 签名数量
-  int count;
+  /// 二维码数据
+  Uint8List? bytes;
 
-  PrintPageArgs({this.count = 1});
+  PrintPageArgs({this.bytes});
 
   @override
   String toString() {
-    return {'count': count}.toString();
+    return {'bytes': bytes}.toString();
   }
 }
 
@@ -34,13 +34,6 @@ class PrintPage extends StatefulWidget {
 }
 
 class _PrintPageState extends BaseLifecycleState<PrintPage> {
-  late int count;
-  late List<SignatureController> ctrlList;
-  late PageController pageCtrl;
-
-  final previousEnable = false.notifier<bool>();
-  final nextEnable = false.notifier<bool>();
-  final submitEnable = false.notifier<bool>();
 
   late List<ServiceModel> serviceList;
 
@@ -61,29 +54,13 @@ class _PrintPageState extends BaseLifecycleState<PrintPage> {
 
   /// 去打印
   Future<void> startPrint() async {
-    // await PrintService.startBluetoothPair(deviceInfo);
+
+    await PrintService.startBluetoothPrint(widget.args.bytes!);
   }
 
   @override
   void onInit() {
 
-    // 创建签名列表
-    count = widget.args.count;
-    ctrlList = List.generate(
-      count,
-          (index) => SignatureController(
-        penStrokeWidth: 6,
-        penColor: Colors.black,
-        strokeJoin: StrokeJoin.round,
-        strokeCap: StrokeCap.round,
-      ),
-    ).toList();
-    pageCtrl = PageController();
-    if (count == 1) {
-      submitEnable.value = true;
-    } else {
-      nextEnable.value = true;
-    }
   }
 
   @override
@@ -92,9 +69,6 @@ class _PrintPageState extends BaseLifecycleState<PrintPage> {
       DeviceOrientation.portraitUp,
       DeviceOrientation.portraitDown,
     ]);
-    for (var ctrl in ctrlList) {
-      ctrl.dispose();
-    }
   }
 
   @override

lib/page/sample_task/reap_sample_detail/reap_sample_task_page.dart

@@ -23,6 +23,7 @@ import '../../../plugin/bluetooth_plugin.dart';
 import '../../../utils/file_utils.dart';
 import '../../../widget/button.dart';
 import '../../../widget/page_widget.dart';
+import 'dart:ui' as ui;
 
 class ReapSampleTaskPageArgs {
   final bool detail;
@@ -199,7 +200,17 @@ class _ReapSampleTaskPageState extends BaseLifecycleState<ReapSampleTaskPage> wi
   }
 
   Future<void> printPic(String? name) async {
-    var args = PrintPageArgs(count: 0);
+
+    Uint8List? bytes = await FileUtils.getBitmapFromContext(ewmKey.currentContext);
+    final codec = await ui.instantiateImageCodec(
+      bytes!,
+      targetHeight: 450,
+      targetWidth: 80*4,
+    );
+    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);
     await MyRouter.startPrint(args: args);
   }
 

lib/plugin/bluetooth_plugin.dart

@@ -71,19 +71,24 @@ class BluetoothPlugin {
     return _channel.invokeMethod('endBluetoothConnect', deviceInfoStr).then<int>((d) => d);
   }
 
-
-  //开始打印
-  Future<int> startBluetoothPrint(BlueDeviceInfo deviceInfo) async {
+  //断开连接
+  Future<bool> hasBluetoothConnectDevice() async {
 
     if (Platform.isIOS) {
-      return 0;
+      return false;
     }
-    String deviceInfoStr = deviceInfo.deviceName+delimiterStr+deviceInfo.deviceMac+delimiterStr+deviceInfo.connectState;
-    return _channel.invokeMethod('startBluetoothPrint', deviceInfoStr).then<int>((d) => d);
+    return _channel.invokeMethod('hasBluetoothConnectDevice').then<bool>((d) => d);
   }
 
 
+  //开始打印
+  Future<int> startBluetoothPrint(Uint8List bytes) async {
 
+    if (Platform.isIOS) {
+      return 0;
+    }
+    return _channel.invokeMethod('startBluetoothPrint', bytes).then<int>((d) => d);
+  }
 
 
 

lib/service/print_service.dart

@@ -1,14 +1,21 @@
 
 
+import 'dart:ffi';
+
 import 'package:lszlgl/utils/permission_utils.dart';
 import 'package:permission_handler/permission_handler.dart';
 
 import '../plugin/bluetooth_plugin.dart';
 import '../router/my_navigator.dart';
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 
 class PrintService {
   PrintService._();
 
+  static List<BlueDeviceInfo> connectedDeviceList = [];
+  static List<String> connectedDeviceMacList = [];
+
   //是否打开蓝牙
   static Future<bool> isBleOpen() async {
     return await BluetoothPlugin.instance.isBleOpen();
@@ -101,17 +108,29 @@ class PrintService {
     }
   }
 
+  //是否有连接中的设备
+  static Future<bool> hasBluetoothConnectDevice() async {
+
+    if(await canExecAction()) {
+      return await BluetoothPlugin.instance.hasBluetoothConnectDevice();
+    } else {
+      return false;
+    }
+  }
+
   //开始打印
-  static Future<int> startBluetoothPrint(BlueDeviceInfo deviceInfo) async {
+  static Future<int> startBluetoothPrint(Uint8List bytes) async {
 
     if(await canExecAction()) {
-      return await BluetoothPlugin.instance.startBluetoothPrint(deviceInfo);
+      return await BluetoothPlugin.instance.startBluetoothPrint(bytes);
     } else {
       return 0;
     }
   }
 
 
+
+
 }
 
 

lib/utils/file_utils.dart

@@ -4,6 +4,7 @@ import 'dart:ui' as ui;
 
 import 'package:flutter/cupertino.dart';
 import 'package:flutter/rendering.dart';
+import 'package:lszlgl/main.dart';
 import 'package:path_provider/path_provider.dart';
 
 class FileUtils {