diff --git a/.idea/workspace.xml b/.idea/workspace.xml
index f2b2058..7d8294f 100644
--- a/.idea/workspace.xml
+++ b/.idea/workspace.xml
@@ -3,6 +3,8 @@
   <component name="ChangeListManager">
     <list default="true" id="2f8e3712-04e2-429a-bcea-c8db1a54008e" name="默认变更列表" comment="">
       <change beforePath="$PROJECT_DIR$/.idea/workspace.xml" beforeDir="false" afterPath="$PROJECT_DIR$/.idea/workspace.xml" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/android/src/main/java/com/dj/printer/dj_printer/DjPrinterPlugin.java" beforeDir="false" afterPath="$PROJECT_DIR$/android/src/main/java/com/dj/printer/dj_printer/DjPrinterPlugin.java" afterDir="false" />
+      <change beforePath="$PROJECT_DIR$/example/pubspec.lock" beforeDir="false" afterPath="$PROJECT_DIR$/example/pubspec.lock" afterDir="false" />
       <change beforePath="$PROJECT_DIR$/lib/dj_printer.dart" beforeDir="false" afterPath="$PROJECT_DIR$/lib/dj_printer.dart" afterDir="false" />
     </list>
     <option name="SHOW_DIALOG" value="false" />
diff --git a/android/src/main/java/com/dj/printer/dj_printer/Blutooth.java b/android/src/main/java/com/dj/printer/dj_printer/Blutooth.java
index 57f2f53..0eadfe7 100644
--- a/android/src/main/java/com/dj/printer/dj_printer/Blutooth.java
+++ b/android/src/main/java/com/dj/printer/dj_printer/Blutooth.java
@@ -41,7 +41,7 @@ public class Blutooth {
         bluetoothPort.SetMacFilter(false);
         bluetoothSetup();
         searchflags = false;
-        disconnectflags=false;
+        disconnectflags = false;
         System.out.println("初始化完成");
     }
 
@@ -57,12 +57,15 @@ public class Blutooth {
                 } else if (BluetoothDevice.ACTION_ACL_DISCONNECTED.equals(action)) {
                     try {
                         if (bluetoothPort.isConnected()) {
+                            System.out.println("1111s");
                             bluetoothPort.disconnect();
-                            if ((btThread != null) && (btThread.isAlive())) {
-                                cancelThread();
-                            }
-                            eventSink.success("disconnected");
                         }
+                        if ((btThread != null) && (btThread.isAlive())) {
+                            cancelThread();
+                        }
+                        System.out.println("disconnected");
+                        eventSink.success("disconnected");
+
                     } catch (IOException e) {
                         // TODO Auto-generated catch block
                         e.printStackTrace();
@@ -160,7 +163,7 @@ public class Blutooth {
         try {
             bluetoothPort.disconnect();
 
-            if((btThread != null) && (btThread.isAlive()))
+            if ((btThread != null) && (btThread.isAlive()))
                 btThread.interrupt();
 
             disconnectflags = true;
@@ -177,8 +180,11 @@ public class Blutooth {
 
     //取消搜索
     public void cancelDiscoveryResult(Context context) {
+        System.out.println("取消搜索");
         mBluetoothAdapter.cancelDiscovery();
         context.unregisterReceiver(discoveryResult);
+        context.unregisterReceiver(searchStart);
+        context.unregisterReceiver(searchFinish);
     }
 
 
@@ -263,12 +269,11 @@ public class Blutooth {
         }
     }
 
-    public void ExcuteDisconnect(Context context)
-    {
+    public void ExcuteDisconnect(Context context) {
         new ExcuteDisconnectBT().execute(context);
     }
 
-    private class ExcuteDisconnectBT extends AsyncTask<Context, Void, Void>{
+    private class ExcuteDisconnectBT extends AsyncTask<Context, Void, Void> {
 
 
         @Override
@@ -276,9 +281,8 @@ public class Blutooth {
             try {
                 DisconnectDevice(contexts[0]);
 
-                while(true)
-                {
-                    if(disconnectflags)
+                while (true) {
+                    if (disconnectflags)
                         break;
 
                     Thread.sleep(100);
@@ -291,16 +295,20 @@ public class Blutooth {
         }
 
         @Override
-        protected void onPreExecute(){
+        protected void onPreExecute() {
             super.onPreExecute();
-        };
+        }
+
+        ;
 
 
         @Override
-        protected void onPostExecute(Void result){
+        protected void onPostExecute(Void result) {
             disconnectflags = false;
             super.onPostExecute(result);
-        };
+        }
+
+        ;
     }
 
 }
diff --git a/android/src/main/java/com/dj/printer/dj_printer/DjPrinterPlugin.java b/android/src/main/java/com/dj/printer/dj_printer/DjPrinterPlugin.java
index 97a5dcf..c3f7edf 100644
--- a/android/src/main/java/com/dj/printer/dj_printer/DjPrinterPlugin.java
+++ b/android/src/main/java/com/dj/printer/dj_printer/DjPrinterPlugin.java
@@ -99,8 +99,12 @@ public class DjPrinterPlugin implements FlutterPlugin, MethodCallHandler {
         } else if (call.method.equals("getStatus")) {
             int sta = asPrint.Get_Status();
             result.success(sta);
-        } else {
-            result.notImplemented();
+        } else if (call.method.equals("disposeDiscovery")) {
+            blutooth.cancelDiscoveryResult(context);
+            result.success(true);
+        } else if (call.method.equals("disposeConnect")) {
+            blutooth.ExcuteDisconnect(context);
+            result.success(true);
         }
     }
 
diff --git a/example/pubspec.lock b/example/pubspec.lock
index e4f64fe..e52ea86 100644
--- a/example/pubspec.lock
+++ b/example/pubspec.lock
@@ -102,13 +102,6 @@ packages:
       url: "https://pub.flutter-io.cn"
     source: hosted
     version: "0.12.11"
-  material_color_utilities:
-    dependency: transitive
-    description:
-      name: material_color_utilities
-      url: "https://pub.flutter-io.cn"
-    source: hosted
-    version: "0.1.2"
   meta:
     dependency: transitive
     description:
@@ -211,7 +204,7 @@ packages:
       name: test_api
       url: "https://pub.flutter-io.cn"
     source: hosted
-    version: "0.4.8"
+    version: "0.4.3"
   typed_data:
     dependency: transitive
     description:
diff --git a/lib/dj_printer.dart b/lib/dj_printer.dart
index 9bb0937..8ae9ffd 100644
--- a/lib/dj_printer.dart
+++ b/lib/dj_printer.dart
@@ -11,13 +11,13 @@ class DjPrinter {
   factory DjPrinter() => _instance;
   static const MethodChannel _channel = MethodChannel('dj_printer');
   static const EventChannel _deviceChannel =
-      EventChannel("com.discovery.devices");
+  EventChannel("com.discovery.devices");
   StreamSubscription? _discoveryStream;
 
   StreamSubscription addDiscoveryListen(
       {required void Function(dynamic data) onReceive,
-      void Function()? onStart,
-      void Function()? onFinish}) {
+        void Function()? onStart,
+        void Function()? onFinish}) {
     if (_discoveryStream == null) {
       return _deviceChannel.receiveBroadcastStream().listen((data) {
         if (data == "start" && onStart != null) {
@@ -34,18 +34,17 @@ class DjPrinter {
   }
 
   void cancelDiscovery() {
-    if (_discoveryStream != null) {
-      _discoveryStream!.cancel();
-      _discoveryStream = null;
-    }
+    _discoveryStream?.cancel();
+    _discoveryStream = null;
+    print('结束搜索');
+    disposeDiscovery();
   }
 
   static const EventChannel _connectChannel = EventChannel("com.connect");
   StreamSubscription? _connectStream;
 
-  StreamSubscription addConnectListen(
-      {required void Function() onConnect,
-      required void Function() onDisconnect}) {
+  StreamSubscription addConnectListen({required void Function() onConnect,
+    required void Function() onDisconnect}) {
     if (_connectStream == null) {
       return _connectChannel.receiveBroadcastStream().listen((data) {
         if (data == 'connected') {
@@ -66,9 +65,8 @@ class DjPrinter {
     }
   }
 
-  Future<bool?> get startSearch async {
-    final res = await _channel.invokeMethod('startSearch');
-    return res;
+  void get startSearch {
+    final res = _channel.invokeMethod('startSearch');
   }
 
   Future<bool?> connect(String address) async {
@@ -76,6 +74,16 @@ class DjPrinter {
     return res;
   }
 
+  void disposeDiscovery() {
+    print('disposeDiscovery');
+    final res = _channel.invokeMethod('disposeDiscovery');
+  }
+
+  Future<bool?> disposeConnect() async {
+    final res = await _channel.invokeMethod('disposeConnect');
+    return res;
+  }
+
   Future<bool?> init() async {
     final res = await _channel.invokeMethod('init');
     return res;
@@ -104,13 +112,12 @@ class DjPrinter {
     }
   }
 
-  Future<bool?> print(
-      {required String code,
-      required String channel,
-      required String country,
-      required String countStr,
-      required int offset,
-      required bool hasPlan}) async {
+  Future<bool?> printAScode({required String code,
+    required String channel,
+    required String country,
+    required String countStr,
+    required int offset,
+    required bool hasPlan}) async {
     final res = await _channel.invokeMethod('print', {
       'code': code,
       'channel': channel,