Download iOS 8 Swift Programming Cookbook by Vandad Nahavandipoor PDF

By Vandad Nahavandipoor

Solely rewritten for Apple’s rapid programming language, this up-to-date cookbook is helping you conquer the vexing matters you’re prone to face while developing apps for iOS devices.

You’ll locate 1000's of recent and revised recipes for utilizing the iOS eight SDK, together with thoughts for operating with healthiness information and HomeKit add-ons, bettering and animating pictures, storing and holding info, sending and receiving notifications, and dealing with records and folders between them. every one recipe comprises pattern code on GitHub so that you can use without delay.

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Call the selectedRowInComponent: method of a UIPickerView and pass the zero-based index of a component. The method will return an integer indicating the zero-based index of the row that is currently selected in that component. If you need to modify the values in your picker view at runtime, you need to make sure that your picker view reloads its data from its data source and delegate. 8.

The first thing that we have to do, obviously, is define the variable that will hold our alert controller. import UIKit class ViewController: UIViewController { var controller:UIAlertController? Alert) Now that the alert controller is created, we are going to create an action that will simply print out a text to the console when pressed. , animated: true, completion: nil) } So by now, the code for our view controller will look like this: import UIKit class ViewController: UIViewController { var controller:UIAlertController?

That way, the colors underneath the popup (colors that come from the photos) will be more appealing to the user and the user will be able to get a better understanding of the content under your popup. 2. Presenting Temporary Information on the Screen with Popovers Problem You want to display a temporary view to the user on the screen and allow them to interact with it. When they are done, this view will need to get dismissed. On an iPad, you would like this information to take up only a bit of the screen real estate, not the whole.

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