Building Apps for Windows Phone 8.1 Jump Start . Videos at: http://channel9.msdn.com/Series/Building-Apps-for-Windows-Phone-8-1

1. Windows XAML+
Silverlight 8.1
30 April 2014
Building Apps for Windows Phone 8.1 Jump Start

5. Raw Sensor Type Windows 8.1 Windows Phone 8.1
3D-Accelerometer Yes Yes
3D-Magnetometer Yes Yes
3D-Gyroscope Yes Yes
Ambient Light Yes Yes
Short Range Proximity No Yes
Simple Device
Orientation
Device
Orientation
Inclinometer Compass Shake

6. // Determine whether we have a gyro on the phone
_gyrometer = Gyrometer.GetDefault();
if (_gyrometer != null)
{
// Establish the report interval (units are milliseconds)
_gyrometer.ReportInterval = 100;
_gyrometer.ReadingChanged += _gyrometer_ReadingChanged;
}
else
{
MessageBox.Show("No gyrometer found");
}

7. // Establish the report interval (units are milliseconds)
uint reportInterval = 100;
if (_gyrometer.MinimumReportInterval > reportInterval)
{
reportInterval = _gyrometer.MinimumReportInterval;
}
_gyrometer.ReportInterval = reportInterval;

8. _gyrometer.ReportInterval = 100;
_gyrometer.ReadingChanged += _gyrometer_ReadingChanged;
…
private void _gyrometer_ReadingChanged(Gyrometer sender, GyrometerReadingChangedEventArgs args)
{
Dispatcher.BeginInvoke(() =>
{
GyrometerReading reading = args.Reading;
X_Reading.Text = String.Format("{0,5:0.00}", reading.AngularVelocityX);
Y_Reading.Text = String.Format("{0,5:0.00}", reading.AngularVelocityY);
Z_Reading.Text = String.Format("{0,5:0.00}", reading.AngularVelocityZ);
});
}

9. // Alternative to ReadingChanged event, call GetCurrentReading() to poll the sensor
GyrometerReading reading = _gyrometer.GetCurrentReading();
if (reading != null)
{
X_Reading.Text = String.Format("{0,5:0.00}", reading.AngularVelocityX);
Y_Reading.Text = String.Format("{0,5:0.00}", reading.AngularVelocityY);
Z_Reading.Text = String.Format("{0,5:0.00}", reading.AngularVelocityZ);
}

15. http://aka.ms/Gc7rwo

17. 18

19. <!-- We'll use the Serial Port Profile service on any device. -->
<m2:DeviceCapability Name="bluetooth.rfcomm">
<m2:Device Id="any"> <!-- or ="vidpid:xxxx xxxx bluetooth" -->
<m2:Function Type="name:serialPort" />
<!-- use name:<service> as above, or… -->
<m2:Function
Type="serviceId:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx"/>
</m2:Device>
</m2:DeviceCapability>
You cannot modify the Bluetooth device capability using the Manifest editor in Microsoft Visual Studio.
You must right-click the Package.appxmanifest file in Solution Explorer and select Open With..., and
then XML (Text) Editor.

20. Discover
RfcommDeviceServices
with the
Windows.Devices.
Enumeration API

21. Use a
StreamSocket to
communicate
with the remote
device

22. 23

23. Familiarity
&
Extensibility

24. <m2:DeviceCapability Name="bluetooth.genericAttributeProfile">
<m2:Device Id="model:xxxx;xxxx"|"any">
<m2:Function Type="name:heartRate"/>
<!-- use name:<service> as above, or… -->
<m2:Function Type="serviceId:xxxxxxxx"/>
</m2:Device>
</m2:DeviceCapability>
You cannot modify the Bluetooth GATT device capability using the Manifest editor in Microsoft Visual
Studio.
You must right-click the Package.appxmanifest file in Solution Explorer and select Open With..., and
then XML (Text) Editor.

25. async void Initialize()
{
var themometerServices = await Windows.Devices.Enumeration
.DeviceInformation.FindAllAsync(
GattDeviceService.GetDeviceSelectorFromUuid(
GattServiceUuids.HealthThermometer), null);
GattDeviceService firstThermometerService = await GattDeviceService.FromIdAsync(themometerServices[0].Id);
Debug.WriteLine("Using service: " + themometerServices[0].Name);
GattCharacteristic thermometerCharacteristic =
firstThermometerService.GetCharacteristics(GattCharacteristicUuids.TemperatureMeasurement)[0];
thermometerCharacteristic.ValueChanged += temperatureMeasurementChanged;
await thermometerCharacteristic.WriteClientCharacteristicConfigurationDescriptorAsync(
GattClientCharacteristicConfigurationDescriptorValue.Notify);
}

26. void temperatureMeasurementChanged(GattCharacteristic sender, GattValueChangedEventArgs eventArgs)
{
byte[] temperatureData = new byte[eventArgs.CharacteristicValue.Length];
Windows.Storage.Streams.DataReader.FromBuffer(eventArgs.CharacteristicValue).ReadBytes(temperatureData);
var temperatureValue = convertTemperatureData(temperatureData);
temperatureTextBlock.Text = temperatureValue.ToString();
}
double convertTemperatureData(byte[] temperatureData)
{
// Read temperature data in IEEE 11703 floating point format
// temperatureData[0] contains flags about optional data - not used
UInt32 mantissa = ((UInt32)temperatureData[3] << 16) |
((UInt32)temperatureData[2] << 8) | ((UInt32)temperatureData[1]);
Int32 exponent = (Int32)temperatureData[4];
return mantissa * Math.Pow(10.0, exponent);
}

27. 28

29. 30
// The service Uuid: 662DD79F-3CD4-4D16-8279-DB1D45ED9628
private static readonly Guid BluetoothServiceUuid = Guid.Parse("662DD79F-3CD4-4D16-8279-DB1D45ED9628");
...
// Register a background Task
var trigger = new RfcommConnectionTrigger();
trigger.InboundConnection.LocalServiceId = RfcommServiceId.FromUuid(BluetoothServiceUuid);
trigger.OutboundConnection.RemoteServiceId = RfcommServiceId.FromUuid(BluetoothServiceUuid);
trigger.AllowMultipleConnections = false;
var builder = new BackgroundTaskBuilder();
builder.SetTrigger(trigger);

33. Picture
Contact cards
URLs
Videos
Transit passes
Enterprise access control
Mobile Payments (Credit/debit
cards etc)

34. http://aka.ms/Gc7rwo

36. Windows.Networking.Proximity.ProximityDevice proximityDevice =
Windows.Networking.Proximity.ProximityDevice.GetDefault();
if (proximityDevice != null)
{
// The format of the app launch string is: "<args>tWindowst<AppName>".
// The string is tab or null delimited. The <args> string can be an empty string ("").
string launchArgs = "user=default";
// The format of the AppName is: PackageFamilyName!PRAID.
string praid = "MyAppId"; // The Application Id value from your package.appxmanifest.
string appName = Windows.ApplicationModel.Package.Current.Id.FamilyName + "!" + praid;
string launchAppMessage = launchArgs + "tWindowst" + appName;
var dataWriter = new Windows.Storage.Streams.DataWriter();
dataWriter.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf16LE;
dataWriter.WriteString(launchAppMessage);
var launchAppPubId =
proximityDevice.PublishBinaryMessage(
"LaunchApp:WriteTag", dataWriter.DetachBuffer());
}

38. Tags supported:
Tags supported:
39

40. 41
Bank/MNO App
UICC
Card
NFC Controller
SE Manager with ACL Enforcer
3rd party
Smartcard API
OS Platform

41. public async void SetupCardReader()
{
var devices = await Windows.Devices.Enumeration.DeviceInformation.FindAllAsync(
SmartCardReader.GetDeviceSelector(SmartCardReaderKind.Nfc));
var reader = await SmartCardReader.FromIdAsync(devices.First().Id);
reader.CardAdded += CardAdded;
reader.CardRemoved += CardRemoved;
}
public async void CardAdded(SmartCardReader sender, CardAddedEventArgs args)
{
DoCardOperations(args.SmartCard);
}
void CardRemoved(SmartCardReader sender, CardRemovedEventArgs args)
{ // Handle card removal }

42. async void DoCardOperations(SmartCard card)
{
using (var connection = await card.ConnectAsync())
{
var atr = await card.GetAnswerToResetAsync();
string adpuCommand = "Some ADPU command";
var dataWriter = new Windows.Storage.Streams.DataWriter();
dataWriter.UnicodeEncoding = Windows.Storage.Streams.UnicodeEncoding.Utf16LE;
dataWriter.WriteString(adpuCommand);
var apduResponse = await connection.TransmitAsync(dataWriter.DetachBuffer());
}
}

43. 44

44. 45

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must respond to changing market conditions, it should not be interpreted to be a commitment on the part of Microsoft, and Microsoft cannot guarantee the accuracy of any information provided after
the date of this presentation. MICROSOFT MAKES NO WARRANTIES, EXPRESS, IMPLIED OR STATUTORY, AS TO THE INFORMATION IN THIS PRESENTATION.