I have been recently working on a HealthKit related app, where I wanted to categorise the blood pressure data. If you are not familiar with this data, here is a little explanation: Measuring Blood pressure Blood pressure build up from 2 numbers: the systolic value and the diastolic value. The valid value ranges for systolic ...
Let me share my story about a bug, which was driving me crazy for a week. I made some modification in my app, tested it on simulators, even a device, and I sent the latest build for the internal TestFlight. When I installed the app on the same device I used to use for testing ...
The recent meltdown of GitLab made me more aware again about the remote repository and thinking about using more than one provider in git, with only one push. In a pure git based situation it is quite easy, actually you can use hacks and official solutions. Let see quickly what are they: Hack #1 At ...
When I was reading about the new App Store review view controller, which is most likely provided in iOS 10.3 on different technology blogs and newsletters, I wanted to try it out immediately. So I started to look after it, where could I acquire more information about it. The answer was so obvious (except the ...
Yep, that’s the most abandoned thing during the development, I know. But it is so easy to add documentation comment blocks to your code, either in Swift or Objective-C, that there won’t be an excuse to do so… At least not after you read this blog post. There is already a keyboard shortcut: option(alt) + ...
After upgrading from Xcode 7 to Xcode 8, I have just noticed that when I am using the simulator, my debug console is getting full with weird messages. Some of the messages could be interesting, but my concern is that my short NSLog messages tend to be disappear in the surrounding noise. It seems that ...
Ok, it sounds stupid at first sight, because warnings and errors are for us: they help the developer’s life to find out where are the problematic parts of our code. In the other hand you might end up in situation when you would like to switch off this feature. To be honest, disable warnings can ...
Recently I commute a lot, and I also work on an iOS project which needs to download data from a web server. When I had ran out of my mobile data package I realised that I need cheaper solution in order to test the data connection and the data download in my iOS App. If ...
So, what is App Transport Security? In a nutshell: this new mechanism in iOS 9 would protect the transmission channel between our app ad the server, forcing to use the TLS or SSL encryption. I recently received a task, to demonstrate how to display and download data from a remote web server in iOS. The specs started ...
When I was wondering what should be the topic for my next post, I was really in trouble. Actually, there are at least 3 proper blog posts to give you an overview and a blueprint how to build and transform yourself into an iOS programmer, even without prior computer science or programming knowledge. Which is ...