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How to Navigate the Xcode Source Editors for iOS App Development

Most iOS app development work in Xcode is done in the Editor area, the main area that's always visible within the Workspace window. The Editor area can also be further configured, with the Standard editor [more…]

How to Use Xcode’s Jump Bar for iOS App Development

A Jump bar appears at the top of each Editor area pane to provide an alternative way to navigate through the iOS app files and symbols in your project. You can use the Jump bar to go directly to items [more…]

How to Organize Your iOS App Code Using the #pragma mark Statement

This is a good time to introduce the #pragma mark statement for iOS apps. If you look in DetailViewController.m, you can see how this statement can be used to group things in your file; such statements [more…]

How to Use the Xcode Source Editor for iOS App Development

The main tool you use to write code for an iOS app is the Xcode source editor, which appears as the Standard editor pane in the editor area on the right side of the Xcode Workspace window after you select [more…]

How to Access Documentation in Xcode for iOS App Development

The ability to quickly access documentation is a major feature of Xcode, and one you’ll want to use regularly for your iOS app project. If you have no idea how to do something, or how something works, [more…]

How to Find and Search in Your iOS App with Xcode

You’ll find that, as your iOS app classes get bigger, sometimes you’ll want to find a symbol or some other text in your project. Xcode provides a number of ways to do that. [more…]

What Changes Were Made in iOS 7?

iOS 7 introduces a major revision to the user interface of iOS. This is helpful information for app developers. It addresses two main issues: the dated look of the interface and the fact that content was [more…]

How to Add Custom View Controllers in Your iOS App

Custom view controllers can be important for your iOS app project. The view controller provided by the storyboard is UIViewController (or UITableViewController [more…]

How to Add Outlets in Your iOS App

Outlets are the way your iOS app code can access — either by sending messages or setting properties — the Interface Builder objects in your storyboard. You can do all this graphically in Interface Builder [more…]

How to Use the Target-Action Pattern in Your iOS App

One requirement of an iOS app user interface is being able to deal with situations where you want to connect a button to your code so that when a user taps the button, something happens. This requirement [more…]

How to Add an Action in Your iOS App

After you have the TestDriveControllerinterface displayed for your iOS app, either by having the Assistant editor display it automatically or by navigating to it using the Jump bar, the actual business [more…]

How to Animate a View in Your iOS App

Whenever you assign a new value to certain view properties (such as the frame and center properties) in your iOS app, the view is immediately redrawn and the change is immediately visible on the screen [more…]

How to Use Block Objects in Your iOS App

Objective-C blocks are like traditional C functions in that blocks are small, self-contained units of code in your iOS app. They can be passed in as arguments of methods and functions and then used when [more…]

How to Rotate Objects in Your iOS App

Here, you find out how to rotate a view (in this case, turn the car around) in your iOS app. To do so, you update the rotate code stub you started out with and replace it with the bolded code. [more…]

How to Track Touches in Your iOS App

It would be nice to be able to drag a car and place it anywhere on the screen in your iOS app. Here, you will find out how to code for dragging an object, as well as how touches work on an iOS device. [more…]

How Use Property Lists in Your iOS App

A property list (or plist) is perfect for storing small amounts of data in your iOS app that consist primarily of strings and numbers. What adds to its appeal is the capability to easily read it into your [more…]

How to Add a Property List to Your iOS App

Given the versatility of property lists, you’re sure to turn to them for your iOS app time and time again. Follow these steps to incorporate a plist into your Xcode project: [more…]

How to Use the Debugger to Test Your iOS App Code

Here is something interesting to look at in the Debugger for your iOS app. As it stands, you can compile your app with no errors and it runs, albeit the same way that it did before. So you have no idea [more…]

How to Customize Your iOS App Table View for the iPad

In an iOS app template, the table view itself is assigned to both the data source and the delegate properties. This means that all of the Table view functionality is embodied in the Table view class. However [more…]

How to Set Up Your Custom View Controller for the iPad

Although MasterViewController already actually does something in your iOS app, you may want to develop it for use in your app by customizing its appearance and having it display [more…]

How to Add a Background Image and Title to Your iOS App

The type of Table view many iOS app programmers use has static cells that you set up in Interface Builder. However, in this view, everything isn’t static — including two things based on the destination [more…]

What is the Problem with Using a Navigation Controller in Detail View for My iOS App?

The Master-Detail Application template you’re using sets up the iPad’s Split View controller for your iOS app in such a way that, when a cell in the Master view is tapped [more…]

How to Use a Navigation Controller in the Master View for Your iOS App

You might want to use a Navigation controller in the Master view of your iOS app. You can do that by creating a segue — a storyboard object that creates a transition from one view controller to another [more…]

How to Add a Gesture Recognizer to Your iOS App

If you want to truly understand the iOS user experience and how it relates to your app, you need to understand the importance of gestures. UIKit includes gesture recognizers that you can use in your app [more…]

How to Add a Toolbar to Your iOS App

You may want a toolbar as part of your iOS app. To eliminate the Navigation controller in the Detail view and set it up so that you always see the button to display the Master view in a popover, you’ll [more…]

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