PermissionsRequiredScreen.kt

val ALL_BLE_PERMISSIONS = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
    arrayOf(
        Manifest.permission.BLUETOOTH_CONNECT,
        Manifest.permission.BLUETOOTH_SCAN
    )
}
else {
    arrayOf(
        Manifest.permission.BLUETOOTH_ADMIN,
        Manifest.permission.BLUETOOTH,
        Manifest.permission.ACCESS_FINE_LOCATION
    )
}

@Composable
fun GrantPermissionsButton(onPermissionGranted: () -> Unit) {
    val launcher = rememberLauncherForActivityResult(
        contract = ActivityResultContracts.RequestMultiplePermissions()
    ) { granted ->
        if (granted.values.all { it }) {
            // User has granted all permissions
            onPermissionGranted()
        }
        else {
            // TODO: handle potential rejection in the usual way
        }
    }
    
    // User presses this button to request permissions
    Button(onClick = { launcher.launch(ALL_BLE_PERMISSIONS) }) {
        Text("Grant Permission")
    }
}