From 58c8865027a1b4bc9a14d92fee4794b215c435f9 Mon Sep 17 00:00:00 2001
From: weidong <weidong@im-droid.com>
Date: Tue, 26 Nov 2024 10:08:42 +0800
Subject: [PATCH] =?UTF-8?q?1=E3=80=81bug=E4=BF=AE=E6=94=B9=EF=BC=9ANull?=
 =?UTF-8?q?=E5=BC=82=E5=B8=B8?=
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---
 .../com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java   | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java
index b7a58a2a..b1388a08 100644
--- a/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java
+++ b/sec-beidou-rtcm/src/main/java/com/imdroid/sideslope/calc/SingleLineGNSSCalcService.java
@@ -283,7 +283,7 @@ public class SingleLineGNSSCalcService implements GNSSDataCalcService {
 
             //更新有效解时间
             if(locationRecord.getEnabled()){
-                if(device.getLastValidCalcDataTime().isBefore(resultTime)){
+                if(device.getLastValidCalcDataTime()==null || device.getLastValidCalcDataTime().isBefore(resultTime)){
                     device.setLastValidCalcDataTime(resultTime);
                 }
             }