diff --git a/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt b/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt
index e419d63..2df20e2 100644
--- a/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt
+++ b/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt
@@ -375,7 +375,7 @@
 
             LoadingDialogHub.show(this, "标识器读取中，请稍后...")
 
-            soundResId = soundPool.load(this, R.raw.ling, 1)
+            soundResId = soundPool.load(this, R.raw.ring3, 1)
             soundPool.setOnLoadCompleteListener { soundPool, _, _ ->
                 soundPool.play(soundResId, 1f, 1f, 0, -1, 1f)
             }

diff --git a/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt b/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt
index e419d63..2df20e2 100644
--- a/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt
+++ b/app/src/main/java/com/casic/detector/view/InstallLabelActivity.kt
@@ -375,7 +375,7 @@
 
             LoadingDialogHub.show(this, "标识器读取中，请稍后...")
 
-            soundResId = soundPool.load(this, R.raw.ling, 1)
+            soundResId = soundPool.load(this, R.raw.ring3, 1)
             soundPool.setOnLoadCompleteListener { soundPool, _, _ ->
                 soundPool.play(soundResId, 1f, 1f, 0, -1, 1f)
             }
diff --git a/app/src/main/java/com/casic/detector/view/MainActivity.kt b/app/src/main/java/com/casic/detector/view/MainActivity.kt
index efeb83b..94e070b 100644
--- a/app/src/main/java/com/casic/detector/view/MainActivity.kt
+++ b/app/src/main/java/com/casic/detector/view/MainActivity.kt
@@ -20,6 +20,7 @@
 import com.amap.api.maps.AMap
 import com.amap.api.maps.AMapOptions
 import com.amap.api.maps.CameraUpdateFactory
+import com.amap.api.maps.CoordinateConverter
 import com.amap.api.maps.model.*
 import com.casic.detector.BuildConfig
 import com.casic.detector.R
@@ -226,13 +227,22 @@
                             val longitudeList = ArrayList<Double>()
 
                             labelBeans.forEach {
-                                //分别缓存经、纬度
-                                latitudeList.add(it.lat.toDouble())
-                                longitudeList.add(it.lng.toDouble())
+                                val latitude = it.lat
+                                val longitude = it.lng
+                                if (latitude.isNotBlank() && longitude.isNotBlank()) {
+                                    if (CoordinateConverter.isAMapDataAvailable(
+                                            latitude.toDouble(), longitude.toDouble()
+                                        )
+                                    ) {
+                                        //分别缓存经、纬度
+                                        latitudeList.add(latitude.toDouble())
+                                        longitudeList.add(longitude.toDouble())
+                                    }
+                                }
                             }
 
-                            //移动地图到所有labelBeans的经纬度中心点
-                            val center = LatLng(latitudeList.average(), longitudeList.average())
+                            //移动地图到所有labelBeans的第一个点
+                            val center = LatLng(latitudeList.first(), longitudeList.first())
                             //移动到指定经纬度
                             aMap.moveCamera(CameraUpdateFactory.newLatLngZoom(center, 16f))