fix 5

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

@@ -248,6 +248,18 @@ public class MqttManager {
     }
     
     /**
+     * 异步连接MQTT - 对外公开接口
+     */
+    public void connectAsync() {
+        LogManager.logInfo(TAG, "手动触发MQTT连接");
+        if (!isConnected && !isConnecting) {
+            simulateConnection();
+        } else {
+            LogManager.logInfo(TAG, "MQTT已连接或正在连接中");
+        }
+    }
+    
+    /**
      * 获取连接状态
      */
     public boolean isConnected() {