tdcolvin

@Composable
fun PlanetsScreen(...) {
    val revealPIN by viewModel.isShowingPin.collectAsStateWithLifecycle()
    val scope = rememberCoroutineScope()

    Column {
        Button(
            onClick = {
                scope.launch {
                    // Here we call a function which takes at least 10 seconds to run,

tdcolvin

private val callback = object: BluetoothGattCallback() {
    override fun onDescriptorWrite(
        gatt: BluetoothGatt?,
        descriptor: BluetoothGattDescriptor,
        status: Int
    ) {
        super.onDescriptorWrite(gatt, descriptor, status)

        if (status == BluetoothGatt.GATT_SUCCESS) {
            Log.v("bluetooth", "Descriptor ${descriptor.uuid} of characteristic ${descriptor.characteristic.uuid}: write success")

tdcolvin

@RequiresPermission(PERMISSION_BLUETOOTH_CONNECT)
fun stopReceivingPasswordUpdates() {
    val service = gatt?.getService(CTF_SERVICE_UUID)
    val characteristic = service?.getCharacteristic(PASSWORD_CHARACTERISTIC_UUID)
    if (characteristic != null) {
        val CLIENT_CONFIG_DESCRIPTOR = UUID.fromString("00002902-0000-1000-8000-00805f9b34fb")
        val desc = characteristic.getDescriptor(CLIENT_CONFIG_DESCRIPTOR)
        desc?.setValue(BluetoothGattDescriptor.DISABLE_NOTIFICATION_VALUE)
        gatt?.writeDescriptor(desc)

tdcolvin

private val callback = object: BluetoothGattCallback() {
    ...
    
    override fun onCharacteristicChanged(
        gatt: BluetoothGatt?,
        characteristic: BluetoothGattCharacteristic
    ) {
        super.onCharacteristicChanged(gatt, characteristic)
        Log.v("bluetooth", characteristic.value.contentToString())
    }

tdcolvin

private val callback = object: BluetoothGattCallback() {

    ...

    override fun onCharacteristicWrite(
        gatt: BluetoothGatt,
        characteristic: BluetoothGattCharacteristic,
        status: Int
    ) {
        super.onCharacteristicWrite(gatt, characteristic, status)

tdcolvin

private val callback = object: BluetoothGattCallback() {
    
    ...
    
    @Deprecated("Deprecated in Java")
    override fun onCharacteristicRead(
        gatt: BluetoothGatt,
        characteristic: BluetoothGattCharacteristic,
        status: Int
    ) {

tdcolvin

// The saved list of services. The BluetoothGattService objects here can be used
// to list the characteristics in each service.
private var services: List<BluetoothGattService> = emptyList()

@RequiresPermission(PERMISSION_BLUETOOTH_CONNECT)
fun discoverServices() {
    gatt?.discoverServices()
}

private val callback = object: BluetoothGattCallback() {

tdcolvin

//Our connection to the selected device
private var gatt: BluetoothGatt? = null

//Whatever we do with our Bluetooth device connection, whether now or later, we will get the
//results in this callback object, which can become massive.
private val callback = object: BluetoothGattCallback() {
    //We will override more methods here as we add functionality.
    
    override fun onConnectionStateChange(gatt: BluetoothGatt, status: Int, newState: Int) {
        super.onConnectionStateChange(gatt, status, newState)

tdcolvin

fun haveAllPermissions(context: Context) =
    ALL_BLE_PERMISSIONS
        .all { context.checkSelfPermission(it) == PackageManager.PERMISSION_GRANTED }

tdcolvin

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,