开始扫描

android/app/build.gradle

@@ -42,6 +42,8 @@ android {
         versionName flutterVersionName
     }
 
+    println "targetSdkVersion: ${flutter.targetSdkVersion}"
+
     // 签名配置
     signingConfigs {
         release {
@@ -86,6 +88,15 @@ android {
     dependencies {
         implementation fileTree(include: ['*.jar'], dir: 'libs')
         implementation 'com.amap.api:location:5.6.0'
+
+        //打印库
+        implementation files('libs/3.2.2-release.aar')
+        //接⼊机型包含B50/B50W/B11/T6/T7/T8系列打印机需要引⼊该包，如不包含则可以不引⼊
+        implementation files('libs/LPAPI-2019-11-20-R.jar')
+        implementation files('libs/image-1.8.4.6.aar')
+
+        //权限库
+        implementation 'com.guolindev.permissionx:permissionx:1.7.1'
     }
 }
 

android/app/src/main/AndroidManifest.xml

@@ -1,4 +1,5 @@
-<manifest xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools">
     <!--允许访问网络，必选权限-->
     <uses-permission android:name="android.permission.INTERNET" />
 
@@ -38,6 +39,20 @@
     <!--允许安装应用-->
     <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
 
+    <!-- 蓝⽛打印机权限 -->
+    <!-- 蓝⽛权限 -->
+    <uses-permission android:name="android.permission.BLUETOOTH" />
+    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
+    <!-- android 5以上 android 12以下，蓝⽛搜索需要位置权限 -->
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
+    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"
+        />
+    <!--android 12 需要申请蓝⽛搜索权限、连接权限 ⽆需申请位置权限 -->
+    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
+    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" android:usesPermissionFlags="neverForLocation" tools:targetApi="s" />
+
+
+
     <application
         android:name="${applicationName}"
         android:icon="@drawable/ic_launcher"

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

@@ -1,6 +1,25 @@
 package com.szls.lszlgl;
 
+import android.util.Log;
+
+import androidx.annotation.NonNull;
+
 import io.flutter.embedding.android.FlutterActivity;
+import io.flutter.embedding.engine.FlutterEngine;
+import io.flutter.embedding.engine.plugins.util.GeneratedPluginRegister;
+import io.flutter.plugins.BluetoothPlugin;
 
 public class MainActivity extends FlutterActivity {
+    @Override
+    public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) {
+        super.configureFlutterEngine(flutterEngine);
+
+
+
+        Log.e("AAAA", ">>> configureFlutterEngine");
+        GeneratedPluginRegister.registerGeneratedPlugins(flutterEngine);
+
+        //插件实例的注册,就是自己写个类，然后实现Flutter提供的FlutterPlugin接口
+        flutterEngine.getPlugins().add(new BluetoothPlugin());
+    }
 }

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

@@ -0,0 +1,131 @@
+package io.flutter.plugins;
+
+import android.Manifest;
+import android.bluetooth.BluetoothAdapter;
+import android.content.Context;
+import android.os.Build;
+import android.util.Log;
+import android.view.View;
+import android.widget.Toast;
+
+import androidx.annotation.NonNull;
+
+import com.permissionx.guolindev.PermissionX;
+
+import java.security.Permission;
+import java.util.List;
+
+import dev.fluttercommunity.plus.androidintent.IntentSender;
+import dev.fluttercommunity.plus.androidintent.MethodCallHandlerImpl;
+import io.flutter.embedding.engine.plugins.FlutterPlugin;
+import io.flutter.plugin.common.BinaryMessenger;
+import io.flutter.plugin.common.MethodCall;
+import io.flutter.plugin.common.MethodChannel;
+
+public class BluetoothPlugin implements FlutterPlugin, MethodChannel.MethodCallHandler {
+
+    private String methodChannelName = "io.flutter.plugins/bluetooth";
+    private MethodChannel methodChannel;
+
+
+    private BluetoothAdapter mBluetoothAdapter;
+
+    public BluetoothPlugin() {
+        mBluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
+
+    }
+
+    @Override
+    public void onAttachedToEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
+        setupChannels(flutterPluginBinding.getBinaryMessenger(), flutterPluginBinding.getApplicationContext());
+    }
+
+    private void setupChannels(BinaryMessenger binaryMessenger, Context applicationContext) {
+
+        methodChannel = new MethodChannel(binaryMessenger, methodChannelName);
+        applicationContext = applicationContext.getApplicationContext();
+        applicationContext.
+
+        methodChannel.setMethodCallHandler(this);
+
+    }
+
+    @Override
+    public void onDetachedFromEngine(@NonNull FlutterPluginBinding flutterPluginBinding) {
+        teardownChannels();
+    }
+
+    @Override
+    public void onMethodCall(@NonNull MethodCall methodCall, @NonNull MethodChannel.Result result) {
+        switch (methodCall.method) {
+
+            case "isSupportBle":
+                Log.d("ble", "isSupportBle");
+                result.success(true);
+                break;
+            case "startScan":
+                Log.d("ble", "startScan");
+                startScan(result);
+                break;
+            case "autoLogin":
+
+                break;
+            case "isLogined":
+
+                break;
+            case "currentAccount":
+                 break;
+            case "logout":
+                 break;
+            case "markAllMessagesRead":
+                 break;
+            default:
+            {
+                result.notImplemented();
+                break;
+            }
+        }
+    }
+
+
+    private void teardownChannels() {
+        methodChannel.setMethodCallHandler(null);
+        methodChannel = null;
+    }
+
+
+    void startScan(@NonNull MethodChannel.Result result) {
+
+        Log.d("ble", "开始搜索 ");
+        if (!mBluetoothAdapter.isEnabled()) {
+            result.success(1); //
+        } else {
+            permissionRequest();
+        }
+    }
+
+    private void permissionRequest() {
+        String[] permissions;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
+            permissions = new String[]{Manifest.permission.BLUETOOTH_SCAN, Manifest.permission.BLUETOOTH_CONNECT};
+        } else {
+            permissions = new String[]{Manifest.permission.ACCESS_COARSE_LOCATION, Manifest.permission.ACCESS_FINE_LOCATION};
+        }
+
+
+
+        PermissionX.init(requireActivity())
+                .permissions(permissions)
+                .request(this::handlePermissionResult);
+    }
+
+    private void handlePermissionResult(boolean allGranted, List<String> grantedList, List<String> deniedList) {
+        if (allGranted) {
+            Log.d("ble", "handleAllPermissionsGranted ");
+//            handleAllPermissionsGranted();
+        } else {
+            Log.d("ble", "权限打开失败 ");
+        }
+    }
+
+}

lib/page/print/connect_print_page.dart

@@ -0,0 +1,160 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:lszlgl/base/base_lifecycle_state.dart';
+import 'package:signature/signature.dart';
+import 'package:lszlgl/widget/button.dart';
+
+import '../../plugin/bluetooth_plugin.dart';
+import '../home/home_page.dart';
+
+class ConnectPrintPageArgs {
+  int count;
+
+  ConnectPrintPageArgs({this.count = 1});
+
+  @override
+  String toString() {
+    return {'count': count}.toString();
+  }
+}
+
+/// 电子签名
+class ConnectPrintPage extends StatefulWidget {
+  final ConnectPrintPageArgs args;
+
+  const ConnectPrintPage({
+    super.key,
+    required this.args,
+  });
+
+  @override
+  State<ConnectPrintPage> createState() => _ConnectPrintPageState();
+}
+
+class _ConnectPrintPageState extends BaseLifecycleState<ConnectPrintPage> {
+  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;
+
+  @override
+  void initState() {
+    super.initState();
+    serviceList = [
+      ServiceModel(name: '搜索', icon: imgHomeListPzjc, onTap: () => startScan()),
+    ];
+  }
+
+  /// 去连接
+  Future<void> startScan() async {
+
+    int result = await BluetoothPlugin.instance.startScan();
+    if(result == 1) {
+      // 蓝牙未开启
+      MyNavigator.showToast('蓝牙未开启');
+    }
+  }
+
+  /// 去打印
+  void startPrint() {
+
+  }
+
+  @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
+  void onDestroy() {
+    SystemChrome.setPreferredOrientations([
+      DeviceOrientation.portraitUp,
+      DeviceOrientation.portraitDown,
+    ]);
+    for (var ctrl in ctrlList) {
+      ctrl.dispose();
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return myScaffold(
+      child: Column(
+        children: [
+          myAppBar(title: '连接打印机'),
+          const SizedBox(height: 18),
+          ...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,
+                    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(),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/page/print/print_page.dart

@@ -0,0 +1,158 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:lszlgl/base/base_lifecycle_state.dart';
+import 'package:lszlgl/page/print/connect_print_page.dart';
+import 'package:signature/signature.dart';
+import 'package:lszlgl/widget/button.dart';
+
+import '../home/home_page.dart';
+
+class PrintPageArgs {
+  /// 签名数量
+  int count;
+
+  PrintPageArgs({this.count = 1});
+
+  @override
+  String toString() {
+    return {'count': count}.toString();
+  }
+}
+
+/// 电子签名
+class PrintPage extends StatefulWidget {
+  final PrintPageArgs args;
+
+  const PrintPage({
+    super.key,
+    required this.args,
+  });
+
+  @override
+  State<PrintPage> createState() => _PrintPageState();
+}
+
+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;
+
+  @override
+  void initState() {
+    super.initState();
+    serviceList = [
+      ServiceModel(name: '连接', icon: imgHomeListPzjc, onTap: () => startConnect()),
+      ServiceModel(name: '打印', icon: imgHomeListZcjy, onTap: () => startPrint()),
+    ];
+  }
+
+  Future<void> startConnect() async {
+
+    var args = ConnectPrintPageArgs(count: 0);
+    await MyRouter.startConnectPrint(args: args);
+  }
+
+  /// 去打印
+  void startPrint() {
+
+  }
+
+  @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
+  void onDestroy() {
+    SystemChrome.setPreferredOrientations([
+      DeviceOrientation.portraitUp,
+      DeviceOrientation.portraitDown,
+    ]);
+    for (var ctrl in ctrlList) {
+      ctrl.dispose();
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return myScaffold(
+      child: Column(
+        children: [
+          myAppBar(title: '打印二维码'),
+          const SizedBox(height: 18),
+          ...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,
+                    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(),
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}

lib/page/sample_task/reap_sample_detail/reap_sample_task_page.dart

@@ -8,6 +8,7 @@ import 'package:image_gallery_saver/image_gallery_saver.dart';
 import 'package:lszlgl/base/base_lifecycle_state.dart';
 import 'package:lszlgl/config/colors.dart';
 import 'package:lszlgl/model/rsp/sample_task_rsp.dart';
+import 'package:lszlgl/page/print/print_page.dart';
 import 'package:lszlgl/page/sample_task/reap_sample_detail/reap_sample_basic_detail_page.dart';
 import 'package:lszlgl/page/sample_task/reap_sample_detail/reap_sample_disaster_detail_page.dart';
 import 'package:lszlgl/page/sample_task/reap_sample_detail/reap_sample_medicine_detail_page.dart';
@@ -18,6 +19,7 @@ import 'package:lszlgl/page/signature/signature_page.dart';
 import '../../../base/base_vm.dart';
 import '../../../main.dart';
 import '../../../network/my_api.dart';
+import '../../../plugin/bluetooth_plugin.dart';
 import '../../../utils/file_utils.dart';
 import '../../../widget/button.dart';
 import '../../../widget/page_widget.dart';
@@ -185,7 +187,7 @@ class _ReapSampleTaskPageState extends BaseLifecycleState<ReapSampleTaskPage> wi
             ),
             Row(
               children: [
-                const Expanded(child: MyButton('打印')),
+                Expanded(child: MyButton('打印', onTap: () => printPic(picInfo.name))),
                 const SizedBox(width: 16),
                 Expanded(child: MyButton('保存图片', onTap: () => savePic(picInfo.name))),
               ],
@@ -196,6 +198,11 @@ class _ReapSampleTaskPageState extends BaseLifecycleState<ReapSampleTaskPage> wi
     );
   }
 
+  Future<void> printPic(String? name) async {
+    var args = PrintPageArgs(count: 0);
+    await MyRouter.startPrint(args: args);
+  }
+
   void savePic(String? name) async {
     MyNavigator.showLoading(msg: '保存中...');
     Uint8List? bytes = await FileUtils.getBitmapFromContext(ewmKey.currentContext);

lib/plugin/bluetooth_plugin.dart

@@ -0,0 +1,35 @@
+import 'dart:io';
+
+import 'package:flutter/services.dart';
+
+class BluetoothPlugin {
+  factory BluetoothPlugin() => _instance;
+  BluetoothPlugin._();
+  static final BluetoothPlugin _instance = BluetoothPlugin._();
+  static BluetoothPlugin get instance => _instance;
+
+  final MethodChannel _channel = const MethodChannel("io.flutter.plugins/bluetooth");
+
+  //开始扫描
+  Future<int> startScan() async {
+    if (Platform.isIOS) {
+      return 0;
+    }
+    return _channel.invokeMethod('startScan').then<int>((d) => d);
+  }
+
+  //设备是否支持蓝牙
+  Future<bool> isSupportBle() async {
+    if (Platform.isIOS) {
+      return true;
+    }
+    return _channel.invokeMethod('isSupportBle').then<bool>((d) => d);
+  }
+
+  //打开蓝牙
+  Future open() async {
+    if (Platform.isAndroid) {
+      _channel.invokeMethod('open');
+    }
+  }
+}

lib/router/my_router.dart

@@ -1,5 +1,7 @@
 import 'package:lszlgl/page/login/login_page.dart';
 import 'package:lszlgl/page/main_tab_page.dart';
+import 'package:lszlgl/page/print/connect_print_page.dart';
+import 'package:lszlgl/page/print/print_page.dart';
 import 'package:lszlgl/page/sample_task/reap_sample_detail/reap_sample_task_page.dart';
 import 'package:lszlgl/page/sample_task/sample_task_list_tab_page.dart';
 import 'package:lszlgl/page/user_center/account_manage_page.dart';
@@ -28,6 +30,10 @@ const rReapSampleTaskPage = '/ReapSampleTaskPage';
 const rStockSampleTaskPage = '/StockSampleTaskPage';
 // 电子签名
 const rSignaturePage = '/SignaturePage';
+// 打印
+const rPrintPage = '/PrintPage';
+// 连接
+const rConnectPrintPage = '/ConnectPrintPage';
 
 final Map<String, MyNavigatorBuilder> rRouteMap = {
   // 根页面
@@ -40,6 +46,8 @@ final Map<String, MyNavigatorBuilder> rRouteMap = {
   rReapSampleTaskPage: (context, args) => ReapSampleTaskPage(args: args as ReapSampleTaskPageArgs),
   rStockSampleTaskPage: (context, args) => StockSampleTaskPage(args: args as StockSampleTaskPageArgs),
   rSignaturePage: (context, args) => SignaturePage(args: args as SignaturePageArgs),
+  rPrintPage: (context, args) => PrintPage(args: args as PrintPageArgs),
+  rConnectPrintPage: (context, args) => ConnectPrintPage(args: args as ConnectPrintPageArgs),
 };
 
 class MyRouter {
@@ -97,4 +105,14 @@ class MyRouter {
   static Future<dynamic> startSignature({SignaturePageArgs? args}) {
     return MyNavigator.push(rSignaturePage, args: args ?? SignaturePageArgs());
   }
+
+  /// 打印任务
+  static Future<dynamic> startPrint({PrintPageArgs? args}) {
+    return MyNavigator.push(rPrintPage, args: args ?? PrintPageArgs());
+  }
+
+  /// 打印任务
+  static Future<dynamic> startConnectPrint({ConnectPrintPageArgs? args}) {
+    return MyNavigator.push(rConnectPrintPage, args: args ?? ConnectPrintPageArgs());
+  }
 }