Head first iphone and ipad development second edition

... head high and say, “Yeah, I code iPhone and iPad apps! ” Running Your iPhone App on the iPad Simulator As you will see, apart from specifying that the app will be on an iPad rather than an iPhone, ... pseudo iPad style What you really want to is program your app specifically for the iPad A real iPad app is made specifically for the iPad and cannot be run on an iPhone All the graphics and screen ... specifically designed for the iPad and are too large for the iPhone So let’s go ahead and make an app specifically for the iPad Close your helloWorld_01 app in Xcode by pressing z+S to save it and then z+Q...

... never need to touch it Main Window Main kicks off a Cocoa Touch Application The standard main( ) kicks off a Cocoa Touch UIApplicationMain, which uses the information in your application’s Info.plist ... UIPickerView needs a datasource that speaks the UIPickerDataSource protocol and a delegate that speaks the UIPickerDelegate protocol Click on the protocol name and you’ll see the documentation for ... keep the code manageable But technically speaking, you can realize as many as you want ƒƒ The picker needs a delegate and a datasource to work ƒƒ In a picker, each dial is a component 70   Chapter...

... block of code: from the alloc, from inserting it into the array Arrays automatically retain items added to them 1 This still has a retain count of because of the alloc, but is now in the autorelease ... memory as they in C, but use alloc to instantiate classes Q: What’s with that init call that you always put after the alloc? A: Objective- C doesn’t have constructors like other Object Oriented languages ... argument order is critical So about those arguments to methods what’s the deal with the name before the colon and the one after the type? In Objective- C you can have a public name and a local...

... the array which plist to use To that, we’ll use the project’s resource bundle, which acts as a handle to applicationspecific information and files Ask the app bundle for path to our DrinkArraya ... ask the navigation controller to display the appropriate view The navigation controller keeps track of where the users are and gives them buttons to go back A navigation bar for buttons and a ... with the navigation controller When you added a title for the main view, the navigation controller kept track of that name as part of the view stack for navigation, and added a back button with the...

... tackle then clear the modal drink once this works actually saving a new Start this at the bottom of the file, just before the dealloc #pragma mark #pragma mark Save and Cancel - (IBAction) save: ... key value coding, which is a specific pattern typically used in Cocoa Binding The subtle catch is that NSDictionary usually just turns a call to valueForKey: into a call to objectForKey, and it ... initWithBarButtonSystemItem:UIBarButtonSystemItemSave target:self action:@selector(save:)] autorelease]; Notice our “autorelease” here to go, then release our referencenormally we alloc a class, assign it to where it needs Objective- C to handle...