修改识别模式

app/src/main/java/com/example/defenseapplication/utils/DeviceUpdateEvent.kt

@@ -0,0 +1,23 @@
+package com.example.defenseapplication.utils
+
+object DeviceUpdateEvent {
+    private val listeners = mutableListOf<DeviceUpdateListener>()
+
+    interface DeviceUpdateListener {
+        fun onDeviceUpdated(deviceId: String)
+    }
+
+    fun addListener(listener: DeviceUpdateListener) {
+        if (!listeners.contains(listener)) {
+            listeners.add(listener)
+        }
+    }
+
+    fun removeListener(listener: DeviceUpdateListener) {
+        listeners.remove(listener)
+    }
+
+    fun notifyDeviceUpdated(deviceId: String) {
+        listeners.forEach { it.onDeviceUpdated(deviceId) }
+    }
+}