修改关闭链接，优化连接蓝牙

android/src/main/java/com/hy/print/hy_printer/Bluetooth.java

@@ -164,16 +164,17 @@ public class Bluetooth {
 
     //搜索设备
     public void SearchingBTDevice() {
+
         new CheckTypesTask().execute();
         System.out.println("开始搜索");
 
     }
 
 
-    public int btConn(final String address, Context context) throws Exception {
+    public void btConn(final String address, Context context) throws Exception {
-//        bluetoothPort.connect(address);
+
-        //final int[] portOpen = {};
+        System.out.println("btConn");
-        final int[] portOpen = new int[1];
+
         btThread = new Thread(new Runnable() {
 
             @Override
@@ -181,9 +182,11 @@ public class Bluetooth {
                 // TODO Auto-generated method stub
                 try {
                     System.out.println(address);
-                    portOpen[0] = PrinterHelper.portOpenBT(context,address);
+                    final int result =  PrinterHelper.portOpenBT(context,address);
-                    PrinterHelper.logcat("portOpen:"+ portOpen[0]);
+                    PrinterHelper.logcat("portOpen result:"+ result);
-                    System.out.println(portOpen[0]);
+                    System.out.println(result);
+
+
                 } catch (Exception e) {
                     // TODO Auto-generated catch block
                     e.printStackTrace();
@@ -193,8 +196,6 @@ public class Bluetooth {
         btThread.start();
         //final int result = PrinterHelper.portOpenBT(context,address);
         //new connBT().execute(address);
-
-        return portOpen[0];
     }
 
     //断开连接
@@ -202,9 +203,15 @@ public class Bluetooth {
         try {
            // bluetoothPort.disconnect();
             PrinterHelper.portClose();
-            if ((btThread != null) && (btThread.isAlive()))
+//            if ((btThread != null) && (btThread.isAlive()))
-                btThread.interrupt();
+//                btThread.interrupt();
-
+            if ((btThread != null) && (btThread.isAlive())) {
+                Thread dummy = btThread;
+                btThread = null;
+                dummy.interrupt();
+            }else{
+               return;
+            }
             disconnectflags = true;
             context.unregisterReceiver(connectDevice);
 
@@ -271,53 +278,45 @@ public class Bluetooth {
 
 
 
-    class connBT extends AsyncTask<String, Void, Integer> {
+//    class connBT extends AsyncTask<String, Void, Integer> {
-
+//
-
+//
-        @Override
+//        @Override
-        protected Integer doInBackground(String... strings) {
+//        protected Integer doInBackground(String... strings) {
-            Integer retVal = null;
+//            Integer retVal = null;
-
+//
-            //bluetoothPort.connect(strings[0]);
+//            //bluetoothPort.connect(strings[0]);
-
+//
-            retVal = Integer.valueOf(0);
+//            retVal = Integer.valueOf(0);
-
+//
-            return retVal;
+//            return retVal;
-        }
+//        }
-
+//
-        @Override
+//        @Override
-        protected void onPreExecute() {
+//        protected void onPreExecute() {
-
+//
-            super.onPreExecute();
+//            super.onPreExecute();
-        }
+//        }
-
+//
-        @Override
+//        @Override
-        protected void onPostExecute(Integer result) {
+//        protected void onPostExecute(Integer result) {
-            if (result.intValue() == 0)    // Connection success.
+//            if (result.intValue() == 0)    // Connection success.
-            {
+//            {
-//                RequestHandler rh = new RequestHandler();
+////                RequestHandler rh = new RequestHandler();
-//                btThread = new Thread(rh);
+////                btThread = new Thread(rh);
-//                btThread.start();
+////                btThread.start();
-            } else    // Connection failed.
+//            } else    // Connection failed.
-            {
+//            {
-
+//
-            }
+//            }
-            super.onPostExecute(result);
+//            super.onPostExecute(result);
-        }
+//        }
-    }
+//    }
 
     public void ExcuteDisconnect(Context context) {
-        new ExcuteDisconnectBT().execute(context);
+//        new ExcuteDisconnectBT().execute(context);
-
-    }
-
-    private class ExcuteDisconnectBT extends AsyncTask<Context, Void, Void> {
-
-
-        @Override
-        protected Void doInBackground(Context... contexts) {
             try {
-                DisconnectDevice(contexts[0]);
+                DisconnectDevice(context);
 
                 while (true) {
                     if (disconnectflags)
@@ -329,24 +328,45 @@ public class Bluetooth {
                 // TODO Auto-generated catch block
                 e.printStackTrace();
             }
-            return null;
-        }
 
-        @Override
-        protected void onPreExecute() {
-            super.onPreExecute();
-        }
-
-        ;
-
-
-        @Override
-        protected void onPostExecute(Void result) {
-            disconnectflags = false;
-            super.onPostExecute(result);
-        }
-
-        ;
     }
 
+//    private class ExcuteDisconnectBT extends AsyncTask<Context, Void, Void> {
+//
+//
+//        @Override
+//        protected Void doInBackground(Context... contexts) {
+//            try {
+//                DisconnectDevice(contexts[0]);
+//
+//                while (true) {
+//                    if (disconnectflags)
+//                        break;
+//
+//                    Thread.sleep(100);
+//                }
+//            } catch (InterruptedException e) {
+//                // TODO Auto-generated catch block
+//                e.printStackTrace();
+//            }
+//            return null;
+//        }
+//
+//        @Override
+//        protected void onPreExecute() {
+//            super.onPreExecute();
+//        }
+//
+//        ;
+//
+//
+//        @Override
+//        protected void onPostExecute(Void result) {
+//            disconnectflags = false;
+//            super.onPostExecute(result);
+//        }
+//
+//        ;
+//    }
+
 }

android/src/main/java/com/hy/print/hy_printer/HyPrinterPlugin.java

@@ -4,7 +4,6 @@ import android.content.Context;
 
 import androidx.annotation.NonNull;
 
-import cpcl.PrinterHelper;
 import io.flutter.embedding.engine.plugins.FlutterPlugin;
 import io.flutter.plugin.common.EventChannel;
 import io.flutter.plugin.common.MethodCall;
@@ -66,14 +65,12 @@ public class HyPrinterPlugin implements FlutterPlugin, MethodCallHandler {
         if (call.method.equals("startSearch")) {
             bluetooth.SearchingBTDevice();
         } else if (call.method.equals("connect")) {
-            int code;
             String arg = call.argument("address");
-            System.out.println(arg);
+
             try {
-                code = bluetooth.btConn(arg,context);
+                System.out.println("开始打印");
-                System.out.println(code);
+                bluetooth.btConn(arg,context);
-                //PrinterHelper.portOpenBT(context,"04:7F:0E:95:FD:A1");
+                result.success(true);
-                result.success(code);
             } catch (Exception e) {
                 e.printStackTrace();
             }
@@ -105,19 +102,11 @@ public class HyPrinterPlugin implements FlutterPlugin, MethodCallHandler {
             }
             result.success(sta);
         } else if (call.method.equals("disposeDiscovery")) {
-            try {
+
-                PrinterHelper.portClose();
-            } catch (Exception e) {
-                e.printStackTrace();
-            }
             bluetooth.cancelDiscoveryResult(context);
             result.success(true);
         } else if (call.method.equals("disposeConnect")) {
-            try {
+
-                PrinterHelper.portClose();
-            } catch (Exception e) {
-                e.printStackTrace();
-            }
             bluetooth.ExcuteDisconnect(context);
             result.success(true);
         }

example/lib/main.dart

@@ -21,33 +21,14 @@ class MyApp extends StatefulWidget {
 
 class _MyAppState extends State<MyApp> {
   List<Device> devices = [];
+  var cancel;
   @override
   void initState() {
     super.initState();
     initPlatformState();
   }
 
-  // Future<void> initPlatformState() async {
-  //   if (!mounted) return;
-  //   setState(() {});
-  // }
   Future<void> initPlatformState() async {
-    // var per = await Permission.bluetooth.isGranted;
-    // if (!per) {
-    //   Permission.bluetooth.request();
-    // }
-    // var pers = await Permission.locationWhenInUse.isGranted;
-    // if (!pers) {
-    //   Permission.locationWhenInUse.request();
-    // }
-    // var per1 = await Permission.bluetoothScan.isGranted;
-    // if (!per1) {
-    //   Permission.bluetoothScan.request();
-    // }
-    // var per2 = await Permission.bluetoothConnect.isGranted;
-    // if (!per2) {
-    //   Permission.bluetoothConnect.request();
-    // }
 
     DjPrinter().init();
     DjPrinter().addDiscoveryListen(onReceive: (data) {
@@ -58,25 +39,23 @@ class _MyAppState extends State<MyApp> {
             address: js['address'],
             isPaired: js['isPaired']));
       }
-
-
-
       setState(() {});
     }, onStart: () {
       print("————————————————————————");
     }, onFinish: () {
       print('——————————————————————————————');
       DjPrinter().cancelDiscovery();
+      cancel();
     });
     DjPrinter().addConnectListen(onConnect: () {
       print("connected");
     }, onDisconnect: () {
       print('disconnected');
     });
+    print('jieshu');
   }
 
 
-
   @override
   Widget build(BuildContext context) {return MaterialApp(
     title: '安速货运',
@@ -87,10 +66,130 @@ class _MyAppState extends State<MyApp> {
           child: BotToastInit().call(context, widget));
     },
     navigatorObservers: [BotToastNavigatorObserver()],
-    home: const ScanPage()
+    home:  Scaffold(
+    backgroundColor: Colors.white,
+    appBar: AppBar(
+      title: const Text('设备列表',style: TextStyle(color: Colors.white),),
+    ),
+    body: Center(
+      child: Column(
+        children: [
+          TextButton(
+              onPressed: () {
+                devices.clear();
+                setState(() {});
+                cancel =
+                    BotToast.showLoading(wrapToastAnimation: (controller, func, child) {
+                      return discoveryLoadingWidget();
+                    });
+                DjPrinter().startSearch;
+              },
+              child: const Text('扫描设备')),
+          // TextButton(onPressed: () {}, child: const Text('打印')),
+          const SizedBox(
+            height: 20,
+          ),
+          ...devices
+              .map((e) => TextButton(
+              onPressed: ()async {
+                BotToast.showLoading(wrapToastAnimation: (controller, func, child) {
+                  return discoveryLoadingWidget();
+                });
+
+
+                await DjPrinter().connect(e.address).then((value) {
+                  print("main value result");
+                  print(value);
+                  if(value!=null&&value){
+                    BotToast.closeAllLoading();
+                  }
+                });
+                // Future.delayed(Duration(seconds: 3), () async {
+                //   if(value==0){
+                //     BotToast.closeAllLoading();
+                //   }
+                // });
+
+
+              },
+              child: Column(
+                children: [
+                  Text(e.name),
+                  Text(e.address),
+                ],
+              )))
+              .toList(),
+          const SizedBox(
+            height: 20,
+          ),
+          TextButton(
+              onPressed: () {
+                DjPrinter().printNewAScode(
+                  code: 'ASSZ000000002',
+                  barCode: 'ASSZ0000000020001',
+                  channel: '加拿大温哥华海派快线-卡派 / UPS派送',
+                  country: '美国啊啊',
+                  num: '2',
+                  sum:'99',
+                  offset: 0,
+                  hasPlan: true, );
+              },
+              child: const Text('nocode打印')),
+          TextButton(
+              onPressed: () {
+
+                DjPrinter().printNewAScode(
+                  code: 'ASSZ000000002',
+                  barCode: 'ASSZ0000000020001',
+                  channel: '加拿大温哥华海派快线-卡派 / UPS派送',
+                  country: '美国',
+                  num: '2',
+                  sum:'999',
+                  offset: 0,
+                  hasPlan: false, );
+              },
+              child: const Text('noplan打印')),
+          const SizedBox(
+            height: 20,
+          ),
+          TextButton(
+              onPressed: () {
+                DjPrinter().disposeConnect();
+              },
+              child: const Text('取消链接')),
+
+        ],
+      ),
+    ),
+  )
 
   );
   }
+  Container discoveryLoadingWidget() {
+    return Container(
+      padding: const EdgeInsets.all(15),
+      decoration: const BoxDecoration(
+          color: Colors.black54,
+          borderRadius: BorderRadius.all(Radius.circular(8))),
+      child: Row(
+        mainAxisSize: MainAxisSize.min,
+        children: [
+          CircularProgressIndicator(
+            backgroundColor: Colors.white,
+          ),
+
+          Text(
+            '扫描中……请稍作等待',
+            style: TextStyle(
+              color: Colors.white,
+              fontSize: 18,
+              fontWeight: FontWeight.bold,
+            ),
+          )
+        ],
+      ),
+    );
+  }
 }
 
 

example/lib/scan_page.dart

@@ -69,6 +69,7 @@ class _ScanPageState extends State<ScanPage> {
     }, onDisconnect: () {
       print('disconnected');
     });
+    print('jieshu');
   }
 
 
@@ -77,8 +78,9 @@ class _ScanPageState extends State<ScanPage> {
   Widget build(BuildContext context) {
 
     return Scaffold(
+      backgroundColor: Colors.white,
       appBar: AppBar(
-        title: const Text('设备列表'),
+        title: const Text('设备列表',style: TextStyle(color: Colors.white),),
       ),
       body: Center(
         child: Column(
@@ -101,19 +103,8 @@ class _ScanPageState extends State<ScanPage> {
             ...devices
                 .map((e) => TextButton(
                 onPressed: ()async {
-                  BotToast.showLoading(wrapToastAnimation: (controller, func, child) {
+
-                    return discoveryLoadingWidget();
+                 await DjPrinter().connect(e.address);
-                  });
-                  
-                  
-                 int? value =  await DjPrinter().connect(e.address);
-                  Future.delayed(Duration(seconds: 3), () async {
-                    if(value==0){
-                      BotToast.closeAllLoading();
-                    }else{
-                      BotToast.closeAllLoading();
-                    }
-                  });
 
 
                 },

lib/dj_printer.dart

@@ -78,14 +78,10 @@ class DjPrinter {
 
   bool get hasInit => _hasInit;
 
-  Future<int?> connect(String address) async {
+  Future<bool?> connect(String address) async {
 
-    await Future.delayed(const Duration(milliseconds: 2000), () async {
+    final res = await _channel.invokeMethod('connect', {'address': address});
-      var res = await _channel.invokeMethod('connect', {'address': address});
-      print('connect');
-      print(res);
       return res;
-    });
   }
 
   void disposeDiscovery() {