Android: Fix null pointer exception when scanning BT-devices

Author: bailuk

CHANGELOG.md

@@ -33,4 +33,5 @@ See [metadata/en-US/changelogs](metadata/en-US/changelogs) for all changelogs.
 - Lib: Fix infinite loop when parsing broken GPX-files (Issue #174)
 - Lib: Fix ignoring altitude precision when reading and displaying tracks
 - Android & GTK: Fix map border does not always receive click events
-- Android & GTK: Fix preview image generation (wrong bounding in draw function) 
+- Android & GTK: Fix preview image generation (wrong bounding in draw function)
+- Android: Fix null pointer exception when scanning BT-devices

aat-android/src/main/kotlin/ch/bailu/aat/services/sensor/bluetooth_le/BleSensors.kt

@@ -60,7 +60,8 @@ class BleSensors(private val scontext: ServiceContext, private val sensorList: S
 
     @Synchronized
     fun foundDevice(device: BluetoothDevice) {
-        val item = sensorList.add(device.address, device.name)
+        val displayName = device.name ?: device.address
+        val item = sensorList.add(device.address, displayName)
         if (item.isUnscannedOrScanning) {
             BleSensor(scontext, device, sensorList, item)
         }