Knowledge Base for IT Professionals, Teachers and Astronauts
This article will guide you to create an app that stores data on the user’s device. To create our sample app to store data on the user’s device Start Xcode, the Apple IDE for IOS development Create a new project Open the AppDelegate.h file and enter the following into the @interface section before the @end @property …
Continue reading “Apple Objective-C programming fundamentals. Working with Data, Part 1, The App”
When you need to display date and time on your app’s screen you need an easy way to convert NSDate objects to NSString objects. Objective-C contains methods to do the conversion, but the syntax is not simple. It is much easier to create a method that does the conversion and call that in a central …
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Segue types Segues are connections between views, so one view can call the other when the user pushes a button, or any specific object. The Modal Segue When the two views do not need to share information, like a login screen The Push Segue The push segue can pass data between the views and handle …
Continue reading “Apple Objective-C programming fundamentals. Creating Segues in the Storyboard”
To write an application for an Apple device (iPhone, iPod, iPadn, Macintosh) Apple recommends the Ojbective-C language. Xcode, the Apple development environment (IDE) supports the usage of Objective-C. This article summarizes the basics of Objective-C for beginners of that language. It is helpful if you already have some programming experience, otherwise some terms will require …
Continue reading “Apple Objective-C programming fundamentals – Part 1 – The language.”
View two files side-by-side Open the Project Navigator Click the first file in the Navigator Option-Click the second file in the Navigator The two files are displayed next to each other, so you can compare them and copy code between them. Using tabs In the Apple Xcode IDE you can use tabs to quickly switch …
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In the prior parts of the series we have created a simple iOS application and tested it in the iOS Simulator. The real gratification comes when we can see our own app on a real device, an iPhone, iPod or iPad. In this article we will deploy the app to an Apple device. Get an …
Continue reading “Create an iPhone, iPod or iPad app – Part 4 – Deploy the app to an Apple device”
In this article we will make our application work. We already created a simple application and added a Text field, a Label and a Button to the view. We created connections between the user interface elements and the View Controller. To make more room to work, close the Utilities area by clicking the Utilities button …
Continue reading “Create an iPhone, iPod or iPad app – Part 3 – Make it work”
Add user interface elements to the view Open the MainStoryboard.storyboard file in the project navigator Open the Utilities area by clicking the right most view button in the upper right corner of the screen In the Library selector bar of the Utilities area select the object library From the list drag a Text Field, a …
Continue reading “Create an iPhone, iPod or iPad app – Part 2 – Adding User Interface elements”
As of the writing of this article to create iOS apps for iPhone, iPod and iPad you need a Macintosh computer with the Lion (Mac OS X 10.7), Mountain Lion (Mac OS X 10.8) or later operating system. Check the hardware requirements of Lion and Mountain Lion if you need to upgrade you computer from Snow …
Continue reading “Create an iPhone, iPod or iPad app – Part 1 – Getting started”
Microsoft Office 2013 tries to amuse you with new bells and whistles, including animated effects, but when you access your computer via Remote Desktop connection this animation can also make Office very slow. If you are interested in working with Microsoft Office 2013 without the unwanted entertainment you can turn off the animation by changing …
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