diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/net/DevicesApi.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/net/DevicesApi.kt
index ec896d3..956a034 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/net/DevicesApi.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/net/DevicesApi.kt
@@ -43,17 +43,32 @@ class DevicesApi : BaseObserve<DevicesApi.Api>(Api::class.java) {
 
     suspend fun uploadGasData(
         gasList: List<GasReqBean> = emptyList()
-    ): BaseResponse {
-        val gasReq = GasRequest(detections = gasList)
-        return api.uploadGasData(gasReq)
+    ): BaseResponse? {
+        try {
+            val gasReq = GasRequest(detections = gasList)
+            return api.uploadGasData(gasReq)
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+        return null
     }
 
-    suspend fun getDetectionLastTime() : LastTimeResponse{
-        return api.getDetectionLastTime(LztekUtil.getSn())
+    suspend fun getDetectionLastTime(): LastTimeResponse? {
+        try {
+            return api.getDetectionLastTime(LztekUtil.getSn())
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+        return null
     }
 
-    suspend fun getVideoLastTime(): LastTimeResponse {
-        return api.getVideoLastTime(LztekUtil.getSn())
+    suspend fun getVideoLastTime(): LastTimeResponse? {
+        try {
+            return api.getVideoLastTime(LztekUtil.getSn())
+        } catch (e: Exception) {
+            e.printStackTrace()
+        }
+        return null
     }
 
     interface Api {
diff --git a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/CloudActivity.kt b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/CloudActivity.kt
index 74da8e3..b5cf38a 100644
--- a/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/CloudActivity.kt
+++ b/app/src/main/java/com/yinuo/safetywatcher/watcher/ui/CloudActivity.kt
@@ -93,13 +93,13 @@ class CloudActivity : NoOptionsActivity() {
             uploadingVideo.set(true)
             // 1.拿到云端最新数据时间
             val timeResponse = devicesApi.getVideoLastTime()
-            if (timeResponse.isOk()) {
+            if (timeResponse?.isOk() == true) {
                 val cloudTime = timeResponse.data
                 // 2. 拿到待上传文件列表 上传
                 getFileListAndUpload(cloudTime)
                 LogUtils.v("uploadVideo ok")
             } else {
-                LogUtils.e("getVideoLastTime error code = ${timeResponse.code}")
+                LogUtils.e("getVideoLastTime error code = ${timeResponse?.code}")
             }
             uploadingVideo.set(false)
         }
@@ -110,14 +110,14 @@ class CloudActivity : NoOptionsActivity() {
             uploadingGas.set(true)
             // 1.拿到云端最新数据时间
             val lastTimeResponse = devicesApi.getDetectionLastTime()
-            if (lastTimeResponse.isOk()) {
+            if (lastTimeResponse?.isOk() == true) {
                 val cloudTime = lastTimeResponse.data
                 // 2. 查询本地数据库中该时间之后的数据
                 // 3. 上传数据给服务器
                 getSensorDataUpload(cloudTime)
                 LogUtils.v("uploadSensorData ok")
             } else {
-                LogUtils.e("getVideoLastTime error code = ${lastTimeResponse.code}")
+                LogUtils.e("getVideoLastTime error code = ${lastTimeResponse?.code}")
             }
             uploadingGas.set(false)
         }
@@ -132,7 +132,7 @@ class CloudActivity : NoOptionsActivity() {
             tempReqList.add(GasReqBean(it))
             if (tempList.size == GAS_CLOUD_UPLOAD_SIZE_ONCE) {
                 val response = devicesApi.uploadGasData(tempReqList)
-                if (response.isOk()) {
+                if (response?.isOk() == true) {
                     val gasDao = DBUtils.gasDao()
                     tempList.forEach { gas ->
                         gas.syncFlag = true
@@ -145,7 +145,7 @@ class CloudActivity : NoOptionsActivity() {
         }
         if (tempList.isNotEmpty()) {
             val response = devicesApi.uploadGasData(tempReqList)
-            if (response.isOk()) {
+            if (response?.isOk() == true) {
                 val gasDao = DBUtils.gasDao()
                 tempList.forEach {
                     it.syncFlag = true