An overview of the Techdays 2016 app. some stats, lessons learned and architecture on how the App is build using Xamarin. Opensource on Github

1. Geert van der Cruijsen
Lead Consultant Xpirit
@geertvdc
#TECHDAYSNL #TDAPP
Roy Cornelissen
Lead Consultant Xpirit
@roycornelissen

2. Techdays app
history

5. Techdays app
by the numbers

6. Windows
18%
Android
40%
iOS
42%

9. Code Sharing

10. Xamarin.Forms Pages Controls
Xamarin.Forms ViewModels Business services
SQLite Azure Mobile Client DataStores

11. 85%

12. 85% 92%

13. 85% 92% 92%

16. APP

18. 3D-Touch
Quick Actions

19. 3D-Touch
Quick Actions

23. Lessons
learned

31. Xamarin caused by: java.lang.OutOfMemoryError: (Heap Size=49159KB, Allocated=41079KB)
at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java)
at dalvik.system.NativeStart.run(Native Method)
java.lang.NullPointerException: null reference
at com.google.android.gms.common.internal.zzx.zzz(Unknown Source)
at com.google.android.gms.appindexing.Thing$Builder.setName(Unknown Source)
at mono.java.lang.RunnableImplementor.n_run(Native Method)
at mono.java.lang.RunnableImplementor.run(RunnableImplementor.java:30)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6077)
at java.lang.reflect.Method.invoke(Native Method)
at …

37. https://techda
ys-2016-staging.azurewebsites.net/
https://techdays-2016-
staging.azurewebsites.net/

38. Geert van der Cruijsen
gvandercruijsen@xpirit.com
@geertvdc
#TECHDAYSNL #TDAPP
bit.ly/XpiritMagazine
Roy Cornelissen
rcornelissen@xpirit.com
@roycornelissen