notes from a developer, tutorials, how-to, ideas
Every time you upload a screenshot on the App Store for a new app submission, you receive from Apple this error message:
Continue reading “Remove alpha channel from png images”“Images can’t contain alpha channels or transparencies.”
I want to introduce you to the new “App Icon Maker“, a simple and free utility for macOS that helps you to convert the images in the 3 Apple formats, @1x, @2x, and @3x.
A simple tutorial for find and identify the wrong typed words of the user in your application using the UITextChecker framework and the NatualLanguage framework.
Very often you create a new class or a new view controller and customize it before start coding.
Every time you select from XCode, New File, the file type and add it to your project, like this:
Continue reading “Create your own XCode template”I have bought a new weight scale that works with or without a smartphone.
There is a proprietary app, called Laica Body Touch.
Problem with this app are:
Continue reading “Hacking “Laica Body Touch” weight scale with iOS”You need to build a System preference panel extension for your app but you’re unable to debug it from XCode due to Apple System Integrity lock?
Latest macOS block the execution or the debug of all system application. Now all apps are signed and if you try to attach a debugger you’ll receive this error:
Message from debugger: cannot attach to process due to System Integrity Protection
Hi guys!
Today i’ve discovered a simple and funny way to catch all Pokemon around the world simply stay sit in front of your pc!
Continue reading “PokemonGo – Catch world wide pokemon… from your desk!”
User defined runtime attributes are the hidden gem of Xcode’s Interface Builder. Available since Xcode 4 and iOS 5, they provide the ability to configure properties of a view that you would otherwise be unable to configure in Interface Builder.
From Wikipedia:
A crash (or system crash) in computing is an event in which a computer or a program (such as a software application or an operating system) ceases to function properly, often exiting after encountering errors. The program responsible may appear to freeze or hang until a crash reporting service documents details of the crash. If the program is a critical part of the operating system kernel, the entire computer may crash, often resulting in a fatal system error. […]
A collection of useful Xcode debugging technique, using Breakpoints and LLDBdebugger.