1. James Clancey
Senior Mobile Developer
Xamarin
clancey@xamarin.com
Must-use App
Components
@jtclancey

2. Component Store with IDE Integration

3. Radial Progress
• Stylish animated progress view

4. Radial Progress
• Stylish animated progress view
• Same API on iOS, Android

5. Radial Progress
• Stylish animated progress view
• Same API on iOS, Android
• Perfect for background tasks

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Radial Progress Sample Usage
using RadialProgress;
public override void ViewDidLoad()
{
base.ViewDidLoad();
! !
var progressView = new RadialProgressView {
Center = new PointF (View.Center.X, View.Center.Y - 100)
};
View.AddSubview (progressView);
// Update the progress
progressView.Value = 0.46f;
}

7. Json.NET
• LINQ-to-JSON for custom JSON parsing and output

8. Json.NET
• LINQ-to-JSON for custom JSON parsing and output
• Faster than .NET's built-in JSON serializers

9. Json.NET
• LINQ-to-JSON for custom JSON parsing and output
• Faster than .NET's built-in JSON serializers
• Also converts JSON to and from XML

10. Json.net
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public class Person
{
public string Name { get; set; }
public DateTime Birthday { get; set; }
}
public Person ParsePerson (string jsonString)
{
var person = JsonConvert.DeserializeObject<Person>(jsonString);
return person;
}

11. ZXing.Net.Mobile is a C#/.NET Barcode Scanning Library
ZXing.Net.Mobile

12. ZXing.Net.Mobile
• Open Source
• Simple API
• Cross platform
iOS
Android
Windows Phone
• Custom Overlays

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ZXing.Net.Mobile
public void Scan ()
{
! var scanner = new ZXing.Mobile.MobileBarcodeScanner ();
! scanner.Scan ().ContinueWith (t => {
! ! if (t.Result != null)
! ! ! Console.WriteLine ("Scanned Barcode: " + t.Result.Text);
! } );
!
}

14. Dropbox
• API handles all the caching, retrying, and file change
notifications.

15. Dropbox
• API handles all the caching, retrying, and file change
notifications.
• Writes are local so changes are immediate. The Sync API syncs
to Dropbox behind the scenes.

16. Dropbox
• API handles all the caching, retrying, and file change
notifications.
• Writes are local so changes are immediate. The Sync API syncs
to Dropbox behind the scenes.
• Your app works great even when offline and automatically syncs
when it's back online.

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Dropbox Sync
void ListFiles (string path)
{
! ! DBError error;
! ! var contents = DBFilesystem.SharedFilesystem.ListFolder (path, out error);
! ! foreach (DBFileInfo info in contents) {
! ! ! Console.WriteLine (info.Path);
! ! }
}

18. • By Zetetic LLC
• 256-bit AES encryption of SQLite database files
SQLCipher

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SQLCipher
public class Model
{
! [PrimaryKey,AutoIncrement]
! public int Id { get; set; }
! public string Content { get; set; }
}
using(var conn = new SQLiteConnection (FilePath, Password))
{
! var model = conn.Table<Model>().Where(x=> x.Id = 0)
}

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SQLCipher
public void SqlCipherDemo ()
{
! using (var connection = new
Mono.Data.Sqlcipher.SqliteConnection(connectionString)) {
! ! connection.SetPassword ("secretPassword");
! ! connection.Open ();
! ! using (var command = connection.CreateCommand()) {
! ! ! var query = "select * from t1";
! ! ! command.CommandText = query;
! ! ! var reader = command.ExecuteReader ();
! ! ! while (reader.Read()) {
! ! ! ! //Read Values
! ! ! }
! ! }
! ! connection.Close ();
! }
}

21. Mobile Services by Windows Azure
• By Microso"
• Easily store data in the cloud
• Managed C#
• Cross Platform
iOS
Android
Windows
• Async

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Mobile Services by Windows Azure
public class Item
{
! ! public int Id { get; set; }
! ! public string Text { get; set; }
}
Item item = new Item { Text = "Awesome item" };
! ! ! App.MobileService.GetTable<Item> ().InsertAsync (item)
! ! ! ! .ContinueWith (t => {
! ! ! /* success or failure */
} );

23. by Shinobi
Blazing fast charts!
ShinobiCharts

24. Xamarin.Social
• Cross Platform
iOS
Android
• Share Text or Images
• Twitter
• Facebook
• Flickr
• App.net
• Pinterest

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Xamarin.Social
// 1. Create the service
var facebook = new FacebookService {
! ClientId = "<App ID from developers.facebook.com/apps>",
! RedirectUrl = new System.Uri ("<Redirect URL from
developers.facebook.com/apps>")
};
// 2. Create an item to share
var item = new Item { Text = "Xamarin.Social is the bomb.com." };
item.Links.Add (new Uri ("http://github.com/xamarin/xamarin.social"));
// 3. Present the UI on iOS
var shareController = facebook.GetShareUI (item, result => {
! // result lets you know if the user shared the item or canceled
! DismissViewController (true, null);
});
PresentViewController (shareController, true, null);

26. Signature Pad
• Very simple API
• Save/Load Vectors
• Export Image

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Signature Pad
var signature = new SignaturePadView (View.Frame);
View.AddSubview (signature);
//Get the signature
var image = signature.GetImage ();
ViewController (shareController, true, null);

28. Xamarin.Mobile
• Cross platform
iOS
Android
Windows
• GeoLocation
• Contacts
• Media Picker

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Xamarin.Mobile
var locator = new Geolocator { DesiredAccuracy = 50 };
locator.GetPositionAsync (timeout: 10000).ContinueWith (t => {
! Console.WriteLine ("Position Status: {0}", t.Result.Timestamp);
! Console.WriteLine ("Position Latitude: {0}", t.Result.Latitude);
! Console.WriteLine ("Position Longitude: {0}", t.Result.Longitude);
}, TaskScheduler.FromCurrentSynchronizationContext ());

30. Q&A

31. DEMO

32. THANK YOU
James Clancey
clancey@xamarin.com
@jtclancey