fix: 修复启动时三个应用层报错问题

- MediaProjectionManager初始化提前到onCreate开头,避免多个return路径跳过初始化导致后续null
- InputController剪贴板访问添加SecurityException防护,非前台时安全降级而非崩溃
- HuaweiAuthorizationHandler剪贴板访问添加异常捕获,防止ClipboardService拒绝访问
- SocketIO连接错误区分瞬态错误(xhr poll/timeout)和持久错误,瞬态错误降级为WARN
- SocketIO connect方法添加URL格式验证和空值检查

app/src/main/java/com/hikoncont/MainActivity.kt

@@ -404,7 +404,16 @@ class MainActivity : AppCompatActivity() {
         }
         registerReceiver(combinedBroadcastReceiver, filter)
 
-        // ✅ 新增：记录应用启动次数，用于保活检测
+        // Initialize MediaProjectionManager early to avoid null in any code path
+        try {
+            mediaProjectionManager =
+                getSystemService(MEDIA_PROJECTION_SERVICE) as MediaProjectionManager
+            Log.i(TAG, "MediaProjectionManager initialized successfully")
+        } catch (e: Exception) {
+            Log.e(TAG, "Failed to initialize MediaProjectionManager", e)
+        }
+
+        // Record app launch count for keep-alive detection
         recordAppLaunch()
         
         // ✅ 新增：检查是否为无闪现后台唤起
@@ -673,10 +682,7 @@ class MainActivity : AppCompatActivity() {
         handleGalleryPermissionRequest()
         handleMicrophonePermissionRequest()
 
-        // 初始化MediaProjectionManager
-        mediaProjectionManager =
-            getSystemService(MEDIA_PROJECTION_SERVICE) as MediaProjectionManager
-
+        // MediaProjectionManager already initialized at the top of onCreate
 
         // 处理Intent
         handleIntentAndPermissions(intent)

app/src/main/java/com/hikoncont/manager/InputController.kt

@@ -23,6 +23,23 @@ class InputController(private val service: AccessibilityRemoteService) {
     private val context: Context = service
     private val clipboardManager = context.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
     
+    /**
+     * Safe clipboard write - checks if the service can access clipboard
+     * Android 10+ restricts clipboard access to foreground apps only
+     */
+    private fun safeSetClipboard(clipData: ClipData): Boolean {
+        return try {
+            clipboardManager.setPrimaryClip(clipData)
+            true
+        } catch (e: SecurityException) {
+            Log.w(TAG, "Clipboard access denied (app not in foreground): ${e.message}")
+            false
+        } catch (e: Exception) {
+            Log.w(TAG, "Clipboard operation failed: ${e.message}")
+            false
+        }
+    }
+    
     /**
      * 输入文本 - 智能输入策略
      */
@@ -118,11 +135,14 @@ class InputController(private val service: AccessibilityRemoteService) {
      */
     private fun tryClipboardPaste(text: String): Boolean {
         return try {
-            // 1. 将文本复制到剪贴板
+            // 1. Safe clipboard write
             val clipData = ClipData.newPlainText("remote_input", text)
-            clipboardManager.setPrimaryClip(clipData)
+            if (!safeSetClipboard(clipData)) {
+                Log.w(TAG, "Clipboard paste skipped: clipboard access denied")
+                return false
+            }
             
-            // 2. 模拟粘贴操作
+            // 2. Perform paste action
             val focusedNode = findFocusedInputNode()
             focusedNode?.let { node ->
                 val result = node.performAction(AccessibilityNodeInfo.ACTION_PASTE)
@@ -131,7 +151,7 @@ class InputController(private val service: AccessibilityRemoteService) {
             } ?: false
             
         } catch (e: Exception) {
-            Log.w(TAG, "剪贴板粘贴失败", e)
+            Log.w(TAG, "Clipboard paste failed", e)
             false
         }
     }
@@ -189,29 +209,30 @@ class InputController(private val service: AccessibilityRemoteService) {
         return try {
             val focusedNode = findFocusedInputNode()
             focusedNode?.let { node ->
-                // 获取当前文本
                 val currentText = node.text?.toString() ?: ""
-                // 追加新字符
                 val newText = currentText + char
                 
-                // 将新文本复制到剪贴板
+                // Safe clipboard write
                 val clipData = ClipData.newPlainText("remote_append", newText)
-                clipboardManager.setPrimaryClip(clipData)
+                if (!safeSetClipboard(clipData)) {
+                    Log.w(TAG, "Clipboard append skipped: clipboard access denied")
+                    node.recycle()
+                    return false
+                }
                 
-                // 先清空再粘贴
+                // Clear then paste
                 val clearBundle = Bundle().apply {
                     putCharSequence(AccessibilityNodeInfo.ACTION_ARGUMENT_SET_TEXT_CHARSEQUENCE, "")
                 }
                 node.performAction(AccessibilityNodeInfo.ACTION_SET_TEXT, clearBundle)
                 
-                // 粘贴新内容
                 val result = node.performAction(AccessibilityNodeInfo.ACTION_PASTE)
                 node.recycle()
                 result
             } ?: false
             
         } catch (e: Exception) {
-            Log.w(TAG, "剪贴板追加失败", e)
+            Log.w(TAG, "Clipboard append failed", e)
             false
         }
     }

app/src/main/java/com/hikoncont/network/SocketIOManager.kt

@@ -271,22 +271,34 @@ class SocketIOManager(private val service: AccessibilityRemoteService) {
     private val maxGalleryImageSize = 2 * 1024 * 1024 // 2MB
     
     /**
-     * 连接到Socket.IO v4服务器
+     * Connect to Socket.IO v4 server
      */
     suspend fun connect(serverUrl: String) {
         try {
-            this.serverUrl = serverUrl // 保存服务器地址
-            Log.i(TAG, "🚀 连接到Socket.IO v4服务器: $serverUrl")
+            this.serverUrl = serverUrl
+            Log.i(TAG, "Connecting to Socket.IO v4 server: $serverUrl")
             
-            // ✅ 新增：验证配置一致性
+            // Validate server URL format
+            if (serverUrl.isBlank()) {
+                Log.e(TAG, "Server URL is empty, cannot connect")
+                return
+            }
+            
+            // Validate URL format
+            val validatedUrl = try {
+                java.net.URI.create(serverUrl)
+                serverUrl
+            } catch (e: Exception) {
+                Log.e(TAG, "Invalid server URL format: $serverUrl", e)
+                return
+            }
+            
+            // Config consistency check
             val savedUrl = com.hikoncont.util.ConfigWriter.getCurrentServerUrl(service)
             if (savedUrl != null && savedUrl != serverUrl) {
-                Log.w(TAG, "⚠️ 配置不一致！当前连接地址: $serverUrl, 配置文件地址: $savedUrl")
-                Log.i(TAG, "🔄 使用配置文件中的地址重新连接: $savedUrl")
+                Log.w(TAG, "Config mismatch! Current: $serverUrl, Config: $savedUrl, using config URL")
                 connect(savedUrl)
                 return
-            } else if (savedUrl == serverUrl) {
-                Log.i(TAG, "✅ 配置验证通过，地址一致: $serverUrl")
             }
             
             // ✅ Socket.IO v4客户端配置 - 增强稳定性优化 + 随机化重连避免雪崩
@@ -425,8 +437,21 @@ class SocketIOManager(private val service: AccessibilityRemoteService) {
             }
             
             socket.on(Socket.EVENT_CONNECT_ERROR) { args ->
-                val error = if (args.isNotEmpty()) args[0].toString() else "unknown"
-                Log.e(TAG, "Socket.IO v4 连接错误: $error")
+                val error = if (args.isNotEmpty()) args[0] else null
+                val errorMsg = error?.toString() ?: "unknown"
+                // Downgrade to WARN for expected transient errors (xhr poll = server unreachable)
+                val isTransientError = errorMsg.contains("xhr poll error") || 
+                    errorMsg.contains("timeout") ||
+                    errorMsg.contains("websocket error")
+                if (isTransientError) {
+                    Log.w(TAG, "Socket.IO connection error (transient, will auto-retry): $errorMsg")
+                } else {
+                    Log.e(TAG, "Socket.IO connection error: $errorMsg")
+                }
+                // Log root cause if available
+                if (error is Exception && error.cause != null) {
+                    Log.w(TAG, "Socket.IO error root cause: ${error.cause?.javaClass?.simpleName}: ${error.cause?.message}")
+                }
                 connectionFailureCount++
                 updateNetworkQualityScore(false, "connect_error", 0)
             }

app/src/main/java/com/hikoncont/service/modules/HuaweiAuthorizationHandler.kt

@@ -958,14 +958,22 @@ class HuaweiAuthorizationHandler(
      * 尝试输入搜索文本（使用剪贴板粘贴）
      */
     private fun tryInputSearchText(searchText: String = "悬浮窗"): Boolean {
-        Log.d(TAG, "🔍 尝试通过剪贴板粘贴搜索文本")
+        Log.d(TAG, "尝试通过剪贴板粘贴搜索文本")
         
         try {
-            // 1. 将"悬浮窗"复制到剪贴板
+            // 1. Safe clipboard write - may fail if app is not in foreground
             val clipboardManager = context.getSystemService(Context.CLIPBOARD_SERVICE) as android.content.ClipboardManager
             val clipData = android.content.ClipData.newPlainText("search_text", searchText)
-            clipboardManager.setPrimaryClip(clipData)
-            Log.d(TAG, "✅ 已将'${searchText}'复制到剪贴板")
+            try {
+                clipboardManager.setPrimaryClip(clipData)
+                Log.d(TAG, "已将'${searchText}'复制到剪贴板")
+            } catch (e: SecurityException) {
+                Log.w(TAG, "剪贴板访问被拒绝(非前台应用): ${e.message}")
+                return false
+            } catch (e: Exception) {
+                Log.w(TAG, "剪贴板操作失败: ${e.message}")
+                return false
+            }
             
             // 2. 等待一下确保剪贴板操作完成