view model and object

app/.idea/.gitignore

@@ -0,0 +1,3 @@
+# Default ignored files
+/shelf/
+/workspace.xml

app/.idea/AndroidProjectSystem.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="AndroidProjectSystem">
+    <option name="providerId" value="com.android.tools.idea.GradleProjectSystem" />
+  </component>
+</project>

app/.idea/gradle.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="GradleSettings">
+    <option name="linkedExternalProjectsSettings">
+      <GradleProjectSettings>
+        <option name="testRunner" value="CHOOSE_PER_TEST" />
+        <option name="externalProjectPath" value="$PROJECT_DIR$" />
+        <option name="gradleJvm" value="#GRADLE_LOCAL_JAVA_HOME" />
+      </GradleProjectSettings>
+    </option>
+  </component>
+</project>

app/.idea/migrations.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ProjectMigrations">
+    <option name="MigrateToGradleLocalJavaHome">
+      <set>
+        <option value="$PROJECT_DIR$" />
+      </set>
+    </option>
+  </component>
+</project>

app/.idea/misc.xml

@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="ExternalStorageConfigurationManager" enabled="true" />
+  <component name="ProjectRootManager" version="2">
+    <output url="file://$PROJECT_DIR$/build/classes" />
+  </component>
+  <component name="ProjectType">
+    <option name="id" value="Android" />
+  </component>
+</project>

app/.idea/runConfigurations.xml

@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="RunConfigurationProducerService">
+    <option name="ignoredProducers">
+      <set>
+        <option value="com.intellij.execution.junit.AbstractAllInDirectoryConfigurationProducer" />
+        <option value="com.intellij.execution.junit.AllInPackageConfigurationProducer" />
+        <option value="com.intellij.execution.junit.PatternConfigurationProducer" />
+        <option value="com.intellij.execution.junit.TestInClassConfigurationProducer" />
+        <option value="com.intellij.execution.junit.UniqueIdConfigurationProducer" />
+        <option value="com.intellij.execution.junit.testDiscovery.JUnitTestDiscoveryConfigurationProducer" />
+        <option value="org.jetbrains.kotlin.idea.junit.KotlinJUnitRunConfigurationProducer" />
+        <option value="org.jetbrains.kotlin.idea.junit.KotlinPatternConfigurationProducer" />
+      </set>
+    </option>
+  </component>
+</project>

app/.idea/vcs.xml

@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>

app/build.gradle.kts

@@ -54,5 +54,6 @@ dependencies {
     debugImplementation(libs.androidx.compose.ui.test.manifest)
     debugImplementation(libs.androidx.compose.ui.tooling)
 
+    implementation("androidx.activity:activity-ktx:1.13.0")
     implementation("androidx.navigation:navigation-compose:2.10.2")
 }

app/src/main/AndroidManifest.xml

@@ -3,7 +3,7 @@
     xmlns:tools="http://schemas.android.com/tools">
     <uses-permission android:name="android.permission.BLUETOOTH" />
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
-    <uses-permission android:name="android.permission.BLUETOOTH_SCAN" android:usesPermissionFlags="neverForLocation" />
+    <uses-permission android:name="android.permission.BLUETOOTH_SCAN"/>
     <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
     <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" android:maxSdkVersion="30" />
     <uses-permission android:name="android.permission.FOREGROUND_SERVICE_CONNECTED_DEVICE"/>
@@ -19,7 +19,6 @@
         android:theme="@style/Theme.SmartWatchAndroid">
         <activity
             android:name=".MainActivity"
-            android:screenOrientation="portrait"
             android:exported="true"
             android:theme="@style/Theme.SmartWatchAndroid"
             android:windowSoftInputMode="adjustResize">

app/src/main/java/com/example/smart_watch_android/BLE/BleManager.kt

@@ -9,16 +9,22 @@ import android.bluetooth.BluetoothGattCharacteristic
 import android.bluetooth.BluetoothManager
 import android.bluetooth.BluetoothProfile
 import android.content.Context
+import android.content.Intent
 import android.content.pm.PackageManager
 import android.os.Build
 import android.util.Log
+import android.widget.Toast
 import androidx.annotation.RequiresApi
 import androidx.annotation.RequiresPermission
-import androidx.compose.runtime.mutableStateOf
+import androidx.compose.ui.platform.LocalContext
 import androidx.core.app.ActivityCompat
+import com.example.smart_watch_android.MainViewModel
 import kotlinx.coroutines.CoroutineScope
 import kotlinx.coroutines.Dispatchers
 import kotlinx.coroutines.delay
+import kotlinx.coroutines.flow.MutableStateFlow
+import kotlinx.coroutines.flow.StateFlow
+import kotlinx.coroutines.flow.asStateFlow
 import kotlinx.coroutines.launch
 import java.time.LocalDate
 import java.time.LocalTime
@@ -26,18 +32,15 @@ import java.time.format.DateTimeFormatter
 import java.util.UUID
 import kotlin.time.Duration.Companion.milliseconds
 
-class BleManager(private val context: Context) {
+object BLEManager{
-
-    //var deviceAddress = "10:BD:A3:8F:01:0E"
     var devices = mutableListOf<Devices>()
-    var isConnected = mutableStateOf(false)
+    private val _isConnected = MutableStateFlow(false)
-
+    val isConnected: StateFlow<Boolean> = _isConnected.asStateFlow()
     val currentDate: LocalDate? = LocalDate.now()
     private val deviceUUIDs = DeviceUUIDs
     private var bluetoothGatt: BluetoothGatt? = null
-    private var bluetoothManager: BluetoothManager? = null
+    private lateinit var bluetoothManager: BluetoothManager
-    private var bluetoothAdapter: BluetoothAdapter? = null
+    private lateinit var bluetoothAdapter: BluetoothAdapter
-    var deviceAddress: String = ""
     val gattCallback = object : BluetoothGattCallback() {
         @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
         override fun onConnectionStateChange(gatt: BluetoothGatt, status: Int, newState: Int) {
@@ -46,7 +49,7 @@ class BleManager(private val context: Context) {
                     Log.d("ESP32_BLE", "Connected! Start discoverServices()...")
                     gatt.discoverServices()
                 } else if (newState == BluetoothProfile.STATE_DISCONNECTED) {
-                    isConnected.value = false
+                    updateConnectionStatus(false)
 
                     gatt.close()
                     bluetoothGatt = null
@@ -54,14 +57,14 @@ class BleManager(private val context: Context) {
                 }
             } else {
                 Log.d("ESP32_BLE", "error in onConnectionStateChange! Status-Code: $status")
-                isConnected.value = false
+                updateConnectionStatus(false)
             }
         }
 
         override fun onServicesDiscovered(gatt: BluetoothGatt, status: Int) {
             if (status == BluetoothGatt.GATT_SUCCESS) {
                 Log.d("ESP32_BLE", "connected successfully.")
-                isConnected.value = true
+                updateConnectionStatus(true)
             }
         }
     }
@@ -69,28 +72,31 @@ class BleManager(private val context: Context) {
         val deviceName: String,
         val deviceMac: String
     )
-
     @RequiresApi(Build.VERSION_CODES.S)
     @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
-    fun init() {
+    fun init(context: Context, activity: Activity) {
-        checkAndRequestBluetoothPermissions()
+        checkAndRequestBluetoothPermissions(
+            activity = activity
+        )
         bluetoothManager = context.getSystemService(Context.BLUETOOTH_SERVICE) as BluetoothManager
-        bluetoothAdapter = bluetoothManager?.adapter
+        bluetoothAdapter = bluetoothManager.adapter
         devices = getDeviceList() as MutableList<Devices>
     }
-
+    fun updateConnectionStatus(status: Boolean) {
+        _isConnected.value = status
+    }
     @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
     fun getDeviceList(): List<Devices>{
-        bluetoothAdapter?.bondedDevices?.forEach { device ->
+        devices.clear()
+        bluetoothAdapter.bondedDevices?.forEach { device ->
             devices.add(Devices(deviceName = device.name, deviceMac = device.address))
         }
         Log.d("devices","$devices")
         return devices
     }
-
     @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
     @RequiresApi(Build.VERSION_CODES.S)
-    fun checkAndRequestBluetoothPermissions() {
+    fun checkAndRequestBluetoothPermissions(activity: Activity) {
         val permissions = arrayOf(
             Manifest.permission.BLUETOOTH_CONNECT,
             Manifest.permission.BLUETOOTH_SCAN,
@@ -98,27 +104,20 @@ class BleManager(private val context: Context) {
         )
 
         val missingPermissions = permissions.filter {
-            ActivityCompat.checkSelfPermission(context, it) != PackageManager.PERMISSION_GRANTED
+            ActivityCompat.checkSelfPermission(activity, it) != PackageManager.PERMISSION_GRANTED
         }
 
         if (missingPermissions.isNotEmpty()) {
-            val activity = context as? Activity
+            // Berechtigungen anfordern
-            if (activity != null) {
             ActivityCompat.requestPermissions(activity, missingPermissions.toTypedArray(), 101)
         } else {
-                Log.d("ESP32_BLE", "Cannot request permissions: Context is not an Activity!")
+            Log.d("ESP32_BLE", "Alle Bluetooth-Berechtigungen sind bereits erteilt!")
         }
     }
-    }
+    fun connectToEsp32(context: Context, deviceAddress: String) {
-
-    fun connectToEsp32() {
         Log.d("ESP32_BLE", "connectToEsp32 started with address: $deviceAddress")
-        if (bluetoothAdapter == null) {
-            Log.d("ESP32_BLE", "error: Bluetooth is not supported!")
-            return
-        }
         try {
-            val device = bluetoothAdapter!!.getRemoteDevice(deviceAddress)
+            val device = bluetoothAdapter.getRemoteDevice(deviceAddress)
 
             if (ActivityCompat.checkSelfPermission(context, Manifest.permission.BLUETOOTH_CONNECT) == PackageManager.PERMISSION_GRANTED) {
                 bluetoothGatt = device.connectGatt(context, false, gattCallback)
@@ -131,7 +130,7 @@ class BleManager(private val context: Context) {
         }
     }
     @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
-    fun disconnectEsp32() {
+    fun disconnectEsp32(context: Context) {
         if (ActivityCompat.checkSelfPermission(context, Manifest.permission.BLUETOOTH_CONNECT) == PackageManager.PERMISSION_GRANTED) {
             bluetoothGatt?.disconnect()
             Log.d("ESP32_BLE","disconnectEsp32")
@@ -140,8 +139,7 @@ class BleManager(private val context: Context) {
             Log.d("BLE_DEBUG", "Permission BLUETOOTH_CONNECT error!")
         }
     }
-
+    fun writeToEsp32(context: Context, dataString: String, SERVICE_UUID: UUID?, CHARACTERISTIC_UUID: UUID?) {
-    fun writeToEsp32(dataString: String, SERVICE_UUID: UUID?, CHARACTERISTIC_UUID: UUID?) {
         val gatt = bluetoothGatt
         if (gatt == null) {
             Log.d("ESP32_BLE", "error: no GATT-Objekt existing (not connected).")
@@ -170,7 +168,7 @@ class BleManager(private val context: Context) {
             Log.d("ESP32_BLE", "started writing: $success")
         }
     }
-    fun syncTime() {
+    fun syncTime(context: Context) {
         val currentTime = LocalTime.now()
         val formatterTime = DateTimeFormatter.ofPattern("HH mm ss")
         val formattedTime = currentTime.format(formatterTime)
@@ -181,11 +179,19 @@ class BleManager(private val context: Context) {
         Log.d("Time/Date","$formattedDate $formattedTime")
 
         CoroutineScope(Dispatchers.IO).launch {
-            writeToEsp32(formattedTime, deviceUUIDs.SERVICE_UUID, deviceUUIDs.CHAR_TIME_UUID)
+            writeToEsp32(
+                context = context,
+                dataString = formattedTime,
+                SERVICE_UUID = deviceUUIDs.SERVICE_UUID,
+                CHARACTERISTIC_UUID = deviceUUIDs.CHAR_TIME_UUID)
 
             delay(150.milliseconds)
 
-            writeToEsp32("$formattedDate", deviceUUIDs.SERVICE_UUID, deviceUUIDs.CHAR_DATE_UUID)
+            writeToEsp32(
+                context = context,
+                dataString ="$formattedDate",
+                SERVICE_UUID =  deviceUUIDs.SERVICE_UUID,
+                CHARACTERISTIC_UUID = deviceUUIDs.CHAR_DATE_UUID)
         }
     }
 }

app/src/main/java/com/example/smart_watch_android/MainActivity.kt

@@ -1,7 +1,6 @@
 package com.example.smart_watch_android
 
 import android.Manifest
-import android.content.Intent
 import android.os.Build
 import android.os.Bundle
 import androidx.activity.ComponentActivity
@@ -13,20 +12,17 @@ import androidx.annotation.RequiresPermission
 import androidx.compose.foundation.layout.fillMaxSize
 import androidx.compose.material3.MaterialTheme
 import androidx.compose.material3.Surface
-import androidx.compose.runtime.Composable
 import androidx.compose.ui.Modifier
-import com.example.smart_watch_android.BLE.BleManager
+import com.example.smart_watch_android.BLE.BLEManager
 import com.example.smart_watch_android.Screens.AppNavigation
 
 class MainActivity : ComponentActivity() {
-    lateinit var bleManager: BleManager
+    private val viewModel: MainViewModel by viewModels()
-
     @RequiresApi(Build.VERSION_CODES.S)
     @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
     override fun onCreate(savedInstanceState: Bundle?,) {
         super.onCreate(savedInstanceState)
-            bleManager = BleManager(this)
+        BLEManager.init(context = applicationContext, activity = this)
-            bleManager.init()
         enableEdgeToEdge()
         setContent {
             MaterialTheme {
@@ -34,16 +30,9 @@ class MainActivity : ComponentActivity() {
                     modifier = Modifier.fillMaxSize(),
                     color = MaterialTheme.colorScheme.background
                 ) {
-                    AppNavigation(bleManager = bleManager)
+                    AppNavigation(viewModel)
                 }
             }
         }
     }
-
-    @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
-    override fun onDestroy() {
-        super.onDestroy()
-        bleManager.disconnectEsp32()
-
-    }
 }

app/src/main/java/com/example/smart_watch_android/MainViewModel.kt

@@ -0,0 +1,17 @@
+package com.example.smart_watch_android
+
+import androidx.compose.runtime.getValue
+import androidx.compose.runtime.mutableStateOf
+import androidx.compose.runtime.setValue
+import androidx.lifecycle.ViewModel
+
+class MainViewModel : ViewModel() {
+    var selectedDevice by mutableStateOf("device")
+    fun updateSelectedDevice(newName: String) {
+        selectedDevice = newName
+    }
+    var selectedDeviceAddress = ""
+    fun updateSelectedDeviceAddress(address: String) {
+        selectedDeviceAddress = address
+    }
+}

app/src/main/java/com/example/smart_watch_android/Screens/AppNavigation.kt

@@ -4,17 +4,23 @@ import android.Manifest
 import androidx.annotation.RequiresPermission
 import androidx.compose.runtime.Composable
 import androidx.compose.runtime.LaunchedEffect
+import androidx.compose.runtime.collectAsState
+import androidx.compose.runtime.getValue
+import androidx.compose.ui.platform.LocalContext
 import androidx.navigation.compose.NavHost
 import androidx.navigation.compose.composable
 import androidx.navigation.compose.rememberNavController
-import com.example.smart_watch_android.BLE.BleManager
+import com.example.smart_watch_android.BLE.BLEManager
+import com.example.smart_watch_android.MainViewModel
 
 @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
 @Composable
-fun AppNavigation(bleManager: BleManager) {
+fun AppNavigation(viewModel: MainViewModel) {
+    val context = LocalContext.current
+    val isConnected by BLEManager.isConnected.collectAsState()
     val navController = rememberNavController()
-    LaunchedEffect(bleManager.isConnected) {
+    LaunchedEffect(BLEManager.isConnected) {
-        if (bleManager.isConnected.value) {
+        if (isConnected) {
             navController.navigate("control_panel") {
                 popUpTo("connect") { inclusive = true }
             }
@@ -24,7 +30,7 @@ fun AppNavigation(bleManager: BleManager) {
             }
         }
     }
-    val startDestination = if (bleManager.isConnected.value) {
+    val startDestination = if (isConnected) {
         "control_panel"
     } else {
         "connect"
@@ -36,17 +42,15 @@ fun AppNavigation(bleManager: BleManager) {
     ) {
         // Connect Screen
         composable("connect") {
-            ConnectScreen(
+            ConnectScreen(viewModel)
-                bleManager = bleManager
-            )
         }
 
         composable("control_panel") {
             ControlPanelScreen(
-                bleManager = bleManager,
+                viewModel,
                 onDisconnectClicked = {
-                    bleManager.disconnectEsp32()
+                    BLEManager.disconnectEsp32(context = context)
-                }
+                },
             )
         }
     }

app/src/main/java/com/example/smart_watch_android/Screens/ConnectScreen.kt

@@ -1,13 +1,17 @@
 package com.example.smart_watch_android.Screens
 
 import android.Manifest
+import android.content.res.Configuration
 import android.util.Log
 import androidx.annotation.RequiresPermission
 import androidx.compose.foundation.layout.Arrangement
 import androidx.compose.foundation.layout.Box
 import androidx.compose.foundation.layout.Column
 import androidx.compose.foundation.layout.Spacer
+import androidx.compose.foundation.layout.aspectRatio
+import androidx.compose.foundation.layout.fillMaxHeight
 import androidx.compose.foundation.layout.fillMaxSize
+import androidx.compose.foundation.layout.fillMaxWidth
 import androidx.compose.foundation.layout.height
 import androidx.compose.foundation.layout.padding
 import androidx.compose.foundation.layout.size
@@ -27,15 +31,29 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalConfiguration
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
 import androidx.compose.ui.unit.sp
-import com.example.smart_watch_android.BLE.BleManager
+import com.example.smart_watch_android.BLE.BLEManager
-
+import com.example.smart_watch_android.MainViewModel
 @RequiresPermission(Manifest.permission.BLUETOOTH_CONNECT)
 @Composable
-fun ConnectScreen(bleManager: BleManager) {
+fun ConnectScreen(viewModel: MainViewModel) {
+    val context = LocalContext.current
     var expanded by remember { mutableStateOf(false) }
-    var selectedDevice by remember { mutableStateOf("device") }
+    val configuration = LocalConfiguration.current
+    val isLandscape = configuration.orientation == Configuration.ORIENTATION_LANDSCAPE
+    val fraction = 0.7f
+    val dynamicModifier = if (isLandscape) {
+        Modifier
+            .fillMaxHeight(fraction)
+            .aspectRatio(1f)
+    } else {
+        Modifier
+            .fillMaxWidth(fraction)
+            .aspectRatio(1f)
+    }
     Column(
         modifier = Modifier
             .fillMaxSize()
@@ -44,6 +62,10 @@ fun ConnectScreen(bleManager: BleManager) {
         horizontalAlignment = Alignment.CenterHorizontally
     )
     {
+        Box(
+        ){
+            Text("if the list is empty ensure you have bluetooth enabled!")
+        }
         Box(
             modifier = Modifier
                 .padding(16.dp)
@@ -51,22 +73,23 @@ fun ConnectScreen(bleManager: BleManager) {
             Button(
                 onClick = { expanded = !expanded},
                 shape = RoundedCornerShape(4.dp),
-                modifier = Modifier.width(400.dp)
+                modifier = Modifier.fillMaxWidth(fraction),
+                colors = ButtonDefaults.buttonColors(Color(0xFF5E18BE))
             ) {
-                Text(selectedDevice)
+                Text(viewModel.selectedDevice)
             }
             DropdownMenu(
                 expanded = expanded,
                 onDismissRequest = { expanded = false },
                 modifier = Modifier
-                    .width(400.dp)
+                    .fillMaxWidth(0.6f)
             ) {
-                bleManager.devices.forEach { item ->
+                BLEManager.devices.forEach { item ->
                     DropdownMenuItem(
                         text = { Text(item.deviceName) },
                         onClick = {
-                            selectedDevice = item.deviceName
+                            viewModel.updateSelectedDevice(item.deviceName)
-                            bleManager.deviceAddress = item.deviceMac
+                            viewModel.updateSelectedDeviceAddress(item.deviceMac)
                             Log.d("ConnectScreen", item.deviceMac)
                             expanded = false
                         }
@@ -75,13 +98,11 @@ fun ConnectScreen(bleManager: BleManager) {
             }
         }
 
-
-
         Spacer(modifier = Modifier.height(64.dp))
 
             Button(
-                modifier = Modifier.size(400.dp),
+                modifier = dynamicModifier,
-                onClick = {bleManager.connectToEsp32() },
+                onClick = {BLEManager.connectToEsp32(context, viewModel.selectedDeviceAddress) },
                 shape = CircleShape,
                 colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF5E18BE))
             ) {

app/src/main/java/com/example/smart_watch_android/Screens/ControlPanelScreen.kt

@@ -12,6 +12,7 @@ import androidx.compose.material3.ButtonDefaults
 import androidx.compose.material3.OutlinedTextField
 import androidx.compose.material3.Text
 import androidx.compose.runtime.Composable
+import androidx.compose.runtime.collectAsState
 import androidx.compose.runtime.getValue
 import androidx.compose.runtime.mutableStateOf
 import androidx.compose.runtime.remember
@@ -19,15 +20,18 @@ import androidx.compose.runtime.setValue
 import androidx.compose.ui.Alignment
 import androidx.compose.ui.Modifier
 import androidx.compose.ui.graphics.Color
+import androidx.compose.ui.platform.LocalContext
 import androidx.compose.ui.unit.dp
-import com.example.smart_watch_android.BLE.BleManager
+import com.example.smart_watch_android.BLE.BLEManager
 import com.example.smart_watch_android.BLE.DeviceUUIDs
+import com.example.smart_watch_android.MainViewModel
 
 @Composable
 fun ControlPanelScreen(
-    bleManager: BleManager,
+    viewModel: MainViewModel,
     onDisconnectClicked: () -> Unit
 ) {
+    val context = LocalContext.current
     var textInput by remember { mutableStateOf("") }
 
     Column(
@@ -50,8 +54,11 @@ fun ControlPanelScreen(
         Button(
             onClick = {
                 if (textInput.isNotEmpty()) {
-                    bleManager.writeToEsp32(
+                    BLEManager.writeToEsp32(
-                        textInput, DeviceUUIDs.SERVICE_UUID, DeviceUUIDs.CHAR_MESSAGE_UUID
+                        context = context,
+                        dataString = textInput,
+                        SERVICE_UUID = DeviceUUIDs.SERVICE_UUID,
+                        CHARACTERISTIC_UUID = DeviceUUIDs.CHAR_MESSAGE_UUID,
                         )
                     textInput = ""
                 }
@@ -67,7 +74,9 @@ fun ControlPanelScreen(
 
         Button(
             onClick = {
-                bleManager.syncTime()
+                BLEManager.syncTime(
+                    context
+                )
             },
             colors = ButtonDefaults.buttonColors(containerColor = Color(0xFF50128F)),
             modifier = Modifier.fillMaxWidth()