Noise from the Basement

This is part 2 of creating a iOS Binding for the Objective-C Library BEMCheckBox.  In part 1 we compiled the Xcode project into two separate libraries.  One for iphones (ARM architecture) and one for iOS simulators (x86/x64 architecture).

In this post I’ll discuss how to combine two libraries into one that contains all the architectures.  If you fail to combine the libraries then you will get errors when you bind to Xamarin.  If you only have the iphone library then it won’t run on the simulator and vice versa.

There is no checkbox for Xamarin Forms applications.  This is a problem because I wanted a checkbox in a application I’m working on.  A switch wasn’t going to cut it.

After a bit of research I found that Android had native checkbox.  Half my problem was solved.  I celebrated by eating a cookie.

Then I ran into a problem because iOS does not have a native checkbox control.  I found others had solved this problem by creating a iOS button and adding a checkbox image to it.  One image for checked and one for unchecked.  This works but it means I can’t easily change the colour, size, etc. of the checkbox.  Any changes would require me to create new images.  Using MS Paint or GIMP is not my strong suit.

Lately, Chris has been working on Xamarin notifications in Android, which you would have gathered from his recent blog posts. I have been tasked with designing an icon to go with this work. I’ve designed a few things before (Scary Sun being my best work), but this task seemed to be especially vexing.

How would I come up with something that captures the concepts of Xamarin, Saturday Morning Productions,  and notifications? It seemed like a lot to fit into a very small space. Now, when I think of being notified for something, I immediately think of bells. Like alarm clock bells. I drew a few iterations of an icon with a bell, but honestly, they looked kinda dumb. I’m not sure anyone would look at them and connect the three things together that I just mentioned. I wondered if I would get a flash of inspiration if I just let it percolate around my brain a bit.

In my previous example I detailed how to schedule notifications in Xamarin on Android but didn’t show the Xamarin Forms application reacting to that specific notification.  Let’s fix that.

First override the OnNewIntent method in the MainActivity.  We override this method so notifications will work if the application is currently running or is stopped and the notification started the application.  In the OnNewIntent method you put code that makes sure it’s a notification you want to respond to then extracts any needed information from the notification.  An example is below:

The great philosopher Henry David Thoreau once said: “Simplify, simplify.”

I actually didn’t know that Thoreau said that until I saw a reference to that quote in a Calvin & Hobbes comic. But that’s another story.

You might be wondering why we at Saturday Morning Productions haven’t written any blog updates about our Goal Buddy App project. Well, that’s because we have reached a bit of an impasse. Our master-coder Chris has written quite a few updates on the first version, which focused on scheduling tasks and having reminders for those tasks. It was cool seeing the app come together. But we started to wonder: how was this any different than using a calendar app?