working on bluetooth

loc_chain_app/lib/util/bluetooth.dart

@@ -7,4 +7,41 @@ import 'package:nearby_connections/nearby_connections.dart';
 
 import 'package:shared_preferences/shared_preferences.dart';
 
-class Connect {}
+class Connect {
+  void startConnect() async {
+    final prefs = await SharedPreferences.getInstance();
+    final userName = prefs.getString('userName') ?? " ";
+    final Strategy strategy = Strategy.P2P_STAR;
+    final serviceId = "com.yourdomain.appname";
+
+    try {
+      bool advertise = await Nearby().startAdvertising(
+        userName,
+        strategy,
+        onConnectionInitiated: (String id, ConnectionInfo info) {
+          // Called whenever a discoverer requests connection
+        },
+        onConnectionResult: (String id, Status status) {
+          // Called when connection is accepted/rejected
+        },
+        onDisconnected: (String id) {
+          // Callled whenever a discoverer disconnects from advertiser
+        },
+        serviceId: serviceId, // uniquely identifies your app
+      );
+      bool discovery = await Nearby().startDiscovery(
+        userName,
+        strategy,
+        onEndpointFound: (String id, String userName, String serviceId) {
+          // called when an advertiser is found
+        },
+        onEndpointLost: (String? id) {
+          //called when an advertiser is lost (only if we weren't connected to it )
+        },
+        serviceId: serviceId, // uniquely identifies your app
+      );
+    } catch (exception) {
+      // platform exceptions like unable to start bluetooth or insufficient permissions
+    }
+  }
+}