Join Todd Perkins for an in-depth discussion in this video Using pointer variables, part of Programming for Non-Programmers: iOS 7.
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…I mentioned earlier that there are primitive and pointer variables.…We've already talked about primitive variables which…are numbers and true or false values generally.…Pointer values apply to pretty much anything else including text.…So, let's look at how pointer works.…In our project, under Programming Basics, I'm working in view controller dot m, so…single-click on that file to work on the same file that I'm working in.…In the view did load function, right under…the comment, I'm going to create a string variable.…
A string is a text value.…In objective C, a string is created by typing NSString.…Now the first three letters are capitalized.…As I type NSS, I see that NSString is highlighted in the codentine window.…So I'm going to press return on my keyboard to complete that code for me.…After that I'm going to type a space, and then I'm going to…type an asterisk and the name of my variable, which will be called name.…Now I'll set a value to my variable using an equal sign.…
Setting a value to an NSString valuable requires quotes and an at symbol.…
If you find you'd like to learn more, see iOS App Development Essential Training, Foundations of Programming: Fundamentals, or any of the other programming courses in our library.
- Installing Xcode
- Creating an Xcode project
- Configuring the iOS Simulator
- Understanding variables
- Connecting visual objects to variables
- Understanding functions, methods, and selectors
- Connecting a button to a function
- Using conditional statements
- Setting up the user interface
- Connecting code elements to build an app