feat: modernize bluetooth apis

app/src/main/java/org/noxylva/lbjconsole/BLEClient.kt

@@ -90,12 +90,13 @@ class BLEClient(private val context: Context) : BluetoothGattCallback() {
         try {
             scanCallback = callback
             this.targetDeviceName = targetDeviceName
-            val bluetoothAdapter = BluetoothAdapter.getDefaultAdapter() ?: run {
+            val bluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
+            val bluetoothAdapter = bluetoothManager.adapter ?: run {
                 Log.e(TAG, "Bluetooth adapter unavailable")
                 return
             }
 
-            if (!bluetoothAdapter.isEnabled) {
+            if (bluetoothAdapter.isEnabled != true) {
                 Log.e(TAG, "Bluetooth adapter disabled")
                 return
             }
@@ -150,13 +151,14 @@ class BLEClient(private val context: Context) : BluetoothGattCallback() {
         }
 
         try {
-            val bluetoothAdapter = BluetoothAdapter.getDefaultAdapter() ?: run {
+            val bluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
+            val bluetoothAdapter = bluetoothManager.adapter ?: run {
                 Log.e(TAG, "Bluetooth adapter unavailable")
                 handler.post { onConnectionStateChange?.invoke(false) }
                 return false
             }
             
-            if (!bluetoothAdapter.isEnabled) {
+            if (bluetoothAdapter.isEnabled != true) {
                 Log.e(TAG, "Bluetooth adapter is disabled")
                 handler.post { onConnectionStateChange?.invoke(false) }
                 return false

app/src/main/java/org/noxylva/lbjconsole/MainActivity.kt

@@ -3,6 +3,7 @@ package org.noxylva.lbjconsole
 import android.Manifest
 import android.bluetooth.BluetoothAdapter
 import android.bluetooth.BluetoothDevice
+import android.bluetooth.BluetoothManager
 import android.content.Context
 import android.content.Intent
 import java.io.File
@@ -77,7 +78,17 @@ class MainActivity : ComponentActivity() {
     private var targetDeviceName = "LBJReceiver"
     
     
-    private val settingsPrefs by lazy { getSharedPreferences("app_settings", Context.MODE_PRIVATE) } 
+    private val settingsPrefs by lazy { getSharedPreferences("app_settings", Context.MODE_PRIVATE) }
+    
+    private fun getAppVersion(): String {
+        return try {
+            val packageInfo = packageManager.getPackageInfo(packageName, 0)
+            packageInfo.versionName ?: "Unknown"
+        } catch (e: Exception) {
+            Log.e(TAG, "Failed to get app version", e)
+            "Unknown"
+        }
+    } 
     
     
     private val requestPermissions = registerForActivityResult(
@@ -279,6 +290,7 @@ class MainActivity : ComponentActivity() {
                             Toast.makeText(this, "设备名称 '${settingsDeviceName}' 已保存，下次连接时生效", Toast.LENGTH_LONG).show()
                             Log.d(TAG, "Applied settings deviceName=${settingsDeviceName}")
                         },
+                        appVersion = getAppVersion(),
                         locoInfoUtil = locoInfoUtil
                     )
                     
@@ -315,8 +327,9 @@ class MainActivity : ComponentActivity() {
         Log.d(TAG, "Connecting to device name=${device.name ?: "Unknown"} address=${device.address}")
         
         // 检查蓝牙适配器状态
-        val bluetoothAdapter = BluetoothAdapter.getDefaultAdapter()
-        if (bluetoothAdapter == null || !bluetoothAdapter.isEnabled) {
+        val bluetoothManager = getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
+        val bluetoothAdapter = bluetoothManager.adapter
+        if (bluetoothAdapter == null || bluetoothAdapter.isEnabled != true) {
             deviceStatus = "蓝牙未启用"
             Log.e(TAG, "Bluetooth adapter unavailable or disabled")
             return
@@ -422,7 +435,8 @@ class MainActivity : ComponentActivity() {
 
     
     private fun startScan() {
-        val bluetoothAdapter = BluetoothAdapter.getDefaultAdapter()
+        val bluetoothManager = getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
+        val bluetoothAdapter = bluetoothManager.adapter
         if (bluetoothAdapter == null) {
             Log.e(TAG, "Bluetooth adapter unavailable")
             deviceStatus = "设备不支持蓝牙"
@@ -521,6 +535,7 @@ fun MainContent(
     deviceName: String,
     onDeviceNameChange: (String) -> Unit,
     onApplySettings: () -> Unit,
+    appVersion: String,
 
     
     locoInfoUtil: LocoInfoUtil
@@ -627,6 +642,7 @@ fun MainContent(
                     deviceName = deviceName,
                     onDeviceNameChange = onDeviceNameChange,
                     onApplySettings = onApplySettings,
+                    appVersion = appVersion
                 )
                 3 -> MapScreen(
                     records = if (allRecords.isNotEmpty()) allRecords else recentRecords,

app/src/main/java/org/noxylva/lbjconsole/ui/components/TrainDetailDialog.kt

@@ -82,7 +82,7 @@ fun TrainDetailDialog(
                 DetailItem("机车类型", recordMap["loco_type"] ?: "--")
                 DetailItem("列车类型", recordMap["lbj_class"] ?: "--")
                 
-                Divider(modifier = Modifier.padding(vertical = 8.dp))
+                HorizontalDivider(modifier = Modifier.padding(vertical = 8.dp))
                 
                 
                 DetailItem("路线", recordMap["route"] ?: "--")

app/src/main/java/org/noxylva/lbjconsole/ui/screens/SettingsScreen.kt

@@ -14,7 +14,8 @@ import androidx.compose.ui.unit.dp
 fun SettingsScreen(
     deviceName: String,
     onDeviceNameChange: (String) -> Unit,
-    onApplySettings: () -> Unit
+    onApplySettings: () -> Unit,
+    appVersion: String = "Unknown"
 ) {
     val uriHandler = LocalUriHandler.current
     
@@ -46,7 +47,7 @@ fun SettingsScreen(
         Spacer(modifier = Modifier.weight(1f))
         
         Text(
-            text = "LBJ Console v0.0.1 by undef-i",
+            text = "LBJ Console v$appVersion by undef-i",
             style = MaterialTheme.typography.bodySmall,
             color = MaterialTheme.colorScheme.onSurfaceVariant,
             modifier = Modifier.clickable {