Jim Bennett
Xamarin MVP Microsoft MVP

Mobile developer at EROAD, Xamarin MVP and Certified Developer, Microsoft MVP, author of Xamarin In Action, blogger, speaker, father and lover of beer, whisky and Thai food. Opinions are my own.

  Auckland, New Zealand
See me soon at:
NDC Sydney 2017
Xamarin In Action
  Xamarin In Action
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  YouTube
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  CV

Be quick - 50% off Xamarin In Action for one week

The MEAP of my book, Xamarin In Action, has just been updated to include a new chapter covering building cross-platform view models. This chapter talks about how you can use view models to increase the amount of cross-platform, unit testable code in your Xamarin app by moving UI logic away from the platform specific layers down into your cross-plat…

Read More

MvvmCross Extension for Visual Studio for Mac

I've been working to update the MvvmCross Xamarin Studio add-in to work with Visual Studio for Mac. The add-in has been updated thanks to some help from Matthew Robbins, the author of the awesome MFractor add-in, which if you don't have you MUST get, it's awesome. This add-in is now available from the VS for Mac extension manager!…

Read More

Using iOS 10 notifications with iBeacons

I'm a huge fan of iBeacons (and if you're coming to MS Ignite NZ 2016 then you can hear me talk about them) and they are pretty easy to get started with on iOS. The most basic use case is beacon monitoring - when your app detects a signal from an iBeacon it can wake up and do some processing in the background. Some of the time this processing might…

Read More

Xamarin In Action

Over the last few months I've been busily writing away on my first book - Xamarin In Action for Manning publications. Manning are a pretty serious publisher, they count Jon Skeet amongst their authors so it was quite an honor to be asked to write for them. The first 3 chapters are now available to buy under the Manning early access program - under…

Read More

Building iBeacon apps using Xamarin.iOS Video Tutorial

As a change from talking about iBeacons at events, I've decided to start a series of YouTube videos covering a number of topics around iBeacons. My first one, an introduction to building your first iBeacon app using Xamarin.iOS is now up on YouTube! You can check it out below. This is my first one, so would appreciate any feedback.…

Read More

Device.StartTimer and iOS backgrounding

I recently completed a lecture on backgrounding in iOS and Android as part of the Xamarin University. During this lecture, one topic of discussion came up with no real answer - how Device.StartTimer() in Xamarin.Forms affects backgrounding. With iOS, if you enable backgrounding using BeginBackgroundTask(), you have 3 minutes to stop all backgroun…

Read More

Xamarin Estimote iOS component

After my Blog post about binding the Estimote iOS SDK, James Montemagno (Developer evangelist at Xamarin) contacted me to say they were about to release an official Xamarin component for accessing Estimote iBeacons and nearables from iOS. This renders my binding library redundant - which is a good thing as its less work for me now to support it! I…

Read More

Xamarin Unified API

Recently Apple announced some changes to their requirements for apps submitted to the iOS app store. From the 1st February all new apps must support 64-bit (for updates to existing apps, it's 1st June). Xamarin, not wanting to do anything the easy way have decided that as well as supporting this, they will overhaul their API and unify their Mac an…

Read More

Useful links

I thought it would be good to create a page full of usefull links - things that have helped me solve some problems and are complete so there's no real need for me to blog their content. Adding symbols to Xamarin crash reports for iOS - this article shows how to add symbol information to a crash report retrieved from your device via XCode for a Xama…

Read More

Orientation with Xamarin.Forms

Xamarin.Forms is a great cross platform development tool when it works, but being cross platform it suffers from a sever lack of features. Some of these are understandable as they are different on each platform so it's hard to provide a consistent experience for the developer. Some are bad ommisions as they are vital to all platforms. The current…

Read More

iOS pull to refresh without using a UITableView

I've been working on the UI for my current app, trying to make some usability improvements. The main screen is a list of data containing an image and some text. Although this is a standard UI pattern, the problem I'm having with it is one of size. List rows are usually short and full width. For text this is fine, but not so good for images, the…

Read More

Weird goings on with Xamarin

Yesterday and today I had some weird things happening with Xamarin, so I thought it was work documenting them in case anyone else has the same issue. First - Build errors. I upgraded to the latest Xamarin and suddenly building for an iPhone using Visual Studio was failing with an odd error: Failed to resolve "System.Reflection.Emit.ModuleBuilder" r…

Read More

Setting the font for an Entry control using Xamarin.Forms

Xamarin.Forms depsite being very cool is stil a bit lacking when it comes to not only a good range of controls, but also to the abilities of those controls. One example of this is the Entry control - a simple text box. One thing you can't do with the out of the box implementation is to set the Font. Such a normal thing to do, but not supported. L…

Read More
 

Be quick - 50% off Xamarin In Action for one week

The MEAP of my book, Xamarin In Action, has just been updated to include a new chapter covering building cross-platform view models. This chapter talks about how you can use view models to increase the amount of cross-platform, unit testable code in your Xamarin app by moving UI logic away from the platform specific layers down into your cross-plat…

Read More

MvvmCross Extension for Visual Studio for Mac

I've been working to update the MvvmCross Xamarin Studio add-in to work with Visual Studio for Mac. The add-in has been updated thanks to some help from Matthew Robbins, the author of the awesome MFractor add-in, which if you don't have you MUST get, it's awesome. This add-in is now available from the VS for Mac extension manager!…

Read More

Using iOS 10 notifications with iBeacons

I'm a huge fan of iBeacons (and if you're coming to MS Ignite NZ 2016 then you can hear me talk about them) and they are pretty easy to get started with on iOS. The most basic use case is beacon monitoring - when your app detects a signal from an iBeacon it can wake up and do some processing in the background. Some of the time this processing might…

Read More

Xamarin In Action

Over the last few months I've been busily writing away on my first book - Xamarin In Action for Manning publications. Manning are a pretty serious publisher, they count Jon Skeet amongst their authors so it was quite an honor to be asked to write for them. The first 3 chapters are now available to buy under the Manning early access program - under…

Read More

Building iBeacon apps using Xamarin.iOS Video Tutorial

As a change from talking about iBeacons at events, I've decided to start a series of YouTube videos covering a number of topics around iBeacons. My first one, an introduction to building your first iBeacon app using Xamarin.iOS is now up on YouTube! You can check it out below. This is my first one, so would appreciate any feedback.…

Read More

Device.StartTimer and iOS backgrounding

I recently completed a lecture on backgrounding in iOS and Android as part of the Xamarin University. During this lecture, one topic of discussion came up with no real answer - how Device.StartTimer() in Xamarin.Forms affects backgrounding. With iOS, if you enable backgrounding using BeginBackgroundTask(), you have 3 minutes to stop all backgroun…

Read More

Xamarin Estimote iOS component

After my Blog post about binding the Estimote iOS SDK, James Montemagno (Developer evangelist at Xamarin) contacted me to say they were about to release an official Xamarin component for accessing Estimote iBeacons and nearables from iOS. This renders my binding library redundant - which is a good thing as its less work for me now to support it! I…

Read More

Xamarin Unified API

Recently Apple announced some changes to their requirements for apps submitted to the iOS app store. From the 1st February all new apps must support 64-bit (for updates to existing apps, it's 1st June). Xamarin, not wanting to do anything the easy way have decided that as well as supporting this, they will overhaul their API and unify their Mac an…

Read More

Useful links

I thought it would be good to create a page full of usefull links - things that have helped me solve some problems and are complete so there's no real need for me to blog their content. Adding symbols to Xamarin crash reports for iOS - this article shows how to add symbol information to a crash report retrieved from your device via XCode for a Xama…

Read More

Orientation with Xamarin.Forms

Xamarin.Forms is a great cross platform development tool when it works, but being cross platform it suffers from a sever lack of features. Some of these are understandable as they are different on each platform so it's hard to provide a consistent experience for the developer. Some are bad ommisions as they are vital to all platforms. The current…

Read More

iOS pull to refresh without using a UITableView

I've been working on the UI for my current app, trying to make some usability improvements. The main screen is a list of data containing an image and some text. Although this is a standard UI pattern, the problem I'm having with it is one of size. List rows are usually short and full width. For text this is fine, but not so good for images, the…

Read More

Weird goings on with Xamarin

Yesterday and today I had some weird things happening with Xamarin, so I thought it was work documenting them in case anyone else has the same issue. First - Build errors. I upgraded to the latest Xamarin and suddenly building for an iPhone using Visual Studio was failing with an odd error: Failed to resolve "System.Reflection.Emit.ModuleBuilder" r…

Read More

Setting the font for an Entry control using Xamarin.Forms

Xamarin.Forms depsite being very cool is stil a bit lacking when it comes to not only a good range of controls, but also to the abilities of those controls. One example of this is the Entry control - a simple text box. One thing you can't do with the out of the box implementation is to set the Font. Such a normal thing to do, but not supported. L…

Read More