fix: 改进 NotificationManager 服务实例获取和验证逻辑

lib/src/main/java/com/example/pin/NotificationManager.kt

@@ -107,13 +107,34 @@ object NotificationManger {
     }
 
     private fun getServiceInstance(context: Context): Any? {
-        // 优先使用已注册的服务实例（MyService.instance）
-        if (serviceInstance != null) {
-//            LogUtils.info("NotificationManager: using cached service instance")
-            return serviceInstance
+        // 优先使用已缓存的实例
+        if (serviceInstance != null && serviceInstance is NotificationListenerService) {
+            val service = serviceInstance as NotificationListenerService
+            // 验证服务是否仍然有效（通过检查 onListenerConnected 是否被调用）
+            if (isServiceValid(service)) {
+                return serviceInstance
+            } else {
+                // 实例无效，清除缓存
+                serviceInstance = null
+            }
         }
         
-        // 尝试从服务类的静态字段获取实例
+        // 优先尝试直接获取 MyService.instance（系统绑定的实例）
+        try {
+            val myServiceClass = Class.forName("com.galaxy.demo.MyService")
+            val instanceField = myServiceClass.getDeclaredField("instance")
+            instanceField.isAccessible = true
+            val instance = instanceField.get(null) as? NotificationListenerService
+            if (instance != null && isServiceValid(instance)) {
+                LogUtils.info("NotificationManager: got instance from MyService.instance")
+                serviceInstance = instance
+                return instance
+            }
+        } catch (e: Exception) {
+            LogUtils.info("NotificationManager: failed to get MyService.instance: ${e.message}")
+        }
+        
+        // 尝试从服务类的静态字段获取实例（备用方案）
         val serviceClass = findServiceClass(context)
         if (serviceClass == null) {
             LogUtils.info("NotificationManager: service class not found")
@@ -121,13 +142,43 @@ object NotificationManger {
         }
         
         LogUtils.info("NotificationManager: found service class ${serviceClass.name}")
-        serviceInstance = getInstance(serviceClass)
-        if (serviceInstance == null) {
-            LogUtils.info("NotificationManager: failed to get service instance")
-        } else {
+        val instance = getInstance(serviceClass)
+        if (instance != null && instance is NotificationListenerService && isServiceValid(instance)) {
+            serviceInstance = instance
             LogUtils.info("NotificationManager: service instance obtained successfully")
+            return instance
+        } else {
+            LogUtils.info("NotificationManager: failed to get valid service instance")
+            serviceInstance = null
+            return null
+        }
+    }
+    
+    private fun isServiceValid(service: NotificationListenerService): Boolean {
+        return try {
+            // 尝试使用反射检查 isBound 属性（如果存在）
+            val isBoundMethod = try {
+                service.javaClass.getMethod("isBound")
+            } catch (e: NoSuchMethodException) {
+                null
+            }
+            
+            if (isBoundMethod != null) {
+                val isBound = isBoundMethod.invoke(service) as? Boolean
+                if (isBound == false) {
+                    return false
+                }
+            }
+            
+            // 如果无法检查 isBound，直接假设有效（实际验证在 getNotifications 中进行）
+            true
+        } catch (e: SecurityException) {
+            LogUtils.info("NotificationManager: service is not bound by system")
+            false
+        } catch (e: Exception) {
+            // 如果无法验证，假设有效（实际验证在 getNotifications 中进行）
+            true
         }
-        return serviceInstance
     }
     
     private fun isNotificationListenerEnabled(context: Context): Boolean {
@@ -192,42 +243,33 @@ object NotificationManger {
     }
 
     private fun getNotifications(instance: Any): List<StatusBarNotification>? {
+        val service = instance as? NotificationListenerService
+        if (service == null) {
+            LogUtils.info("NotificationManager: instance is not NotificationListenerService")
+            return null
+        }
+        
         return try {
-            // 确保实例是 NotificationListenerService 类型
-            val service = instance as? NotificationListenerService
-            if (service != null) {
-                // 直接调用方法，避免反射调用导致的 SecurityException
-                val result = service.activeNotifications
-                return result?.toList() ?: emptyList()
+            // 尝试使用反射检查 isBound（如果 API 可用）
+            val isBound = try {
+                val isBoundMethod = service.javaClass.getMethod("isBound")
+                isBoundMethod.invoke(service) as? Boolean ?: true
+            } catch (e: NoSuchMethodException) {
+                // isBound 方法不存在（旧版本 Android），直接尝试调用
+                true
+            } catch (e: Exception) {
+                true
             }
             
-            // 如果类型转换失败，使用反射（可能触发 SecurityException）
-            val method: Method = instance.javaClass.getMethod("getActiveNotifications")
-            method.isAccessible = true
-            val result = method.invoke(instance)
-            
-            if (result == null) {
-                LogUtils.info("NotificationManager: getActiveNotifications returned null")
+            if (!isBound) {
+                LogUtils.info("NotificationManager: service is not bound, clearing cache")
+                serviceInstance = null
                 return null
             }
             
-            val notifications = when {
-                result is Array<*> -> {
-                    result.filterIsInstance<StatusBarNotification>()
-                }
-                result is List<*> -> {
-                    result.filterIsInstance<StatusBarNotification>()
-                }
-                else -> {
-                    LogUtils.info("NotificationManager: unexpected result type: ${result.javaClass.name}")
-                    null
-                }
-            }
-            
-//            notifications?.let {
-//                LogUtils.info("NotificationManager: retrieved ${it.size} active notifications")
-//            }
-            notifications
+            // 直接调用方法获取通知（这里会抛出 SecurityException 如果服务无效）
+            val result = service.activeNotifications
+            result?.toList() ?: emptyList()
         } catch (e: SecurityException) {
             LogUtils.error(e, "NotificationManager: SecurityException - notification listener may not be enabled or instance is invalid")
             // 清除缓存的实例，下次尝试重新获取