fix 4.2

app/src/main/java/com/ouxuan/oxface/abgate/ABGateManager.java

@@ -256,7 +256,10 @@ public class ABGateManager {
                 @Override
                 public void onError(String errorMessage) {
                     LogManager.logError(TAG, "485人数获取失败: " + errorMessage);
-                    peopleCheckFuture.completeExceptionally(new RuntimeException("485人数获取失败: " + errorMessage));
+                    // 当485通信失败时，立即完成future并返回false，表示检查不通过
+                    peopleCheckFuture.complete(false);
+                    // 或者可以选择抛出异常
+                    // peopleCheckFuture.completeExceptionally(new RuntimeException("485人数获取失败: " + errorMessage));
                 }
             });
             
@@ -268,7 +271,8 @@ public class ABGateManager {
         } catch (Exception e) {
             String errorMsg = "人数检查异常: " + e.getMessage();
             LogManager.logError(TAG, errorMsg, e);
-            throw new RuntimeException(errorMsg);
+            // 当出现异常时，返回false表示检查不通过
+            return false;
         }
     }
     

app/src/main/java/com/ouxuan/oxface/device/GateABController.java

@@ -952,7 +952,7 @@ public class GateABController {
             public void onSuccess(int peopleNum) {
                 LogManager.logInfo(TAG, "485人数获取成功: " + peopleNum + " 人");
                 if (callback != null) {
-                    callback.onSuccess(peopleNum);
+                    syncHandler.post(() -> callback.onSuccess(peopleNum));
                 }
             }
             
@@ -960,7 +960,7 @@ public class GateABController {
             public void onError(String errorMessage) {
                 LogManager.logError(TAG, "485人数获取失败: " + errorMessage);
                 if (callback != null) {
-                    callback.onError(errorMessage);
+                    syncHandler.post(() -> callback.onError(errorMessage));
                 }
             }
         });

app/src/main/java/com/ouxuan/oxface/device/Ox485.java

@@ -208,6 +208,17 @@ public class Ox485 {
                 return;
             }
             
+            // 检查串口文件是否有读写权限
+            if (!serialPortFile.canRead() || !serialPortFile.canWrite()) {
+                String errorMsg = "485串口设备无读写权限: " + DEFAULT_SERIAL_PORT_PATH;
+                LogManager.logError(TAG, errorMsg);
+                closeAndCleanup(serialPortManager);
+                if (callback != null) {
+                    mainHandler.post(() -> callback.onError(errorMsg));
+                }
+                return;
+            }
+            
             // 配置串口参数
             boolean openResult = serialPortManager.openSerialPort(serialPortFile, DEFAULT_BAUD_RATE);
             LogManager.logInfo(TAG, "485串口打开结果: " + openResult);