By Nick Harris
IOS 7 replaced everything—get as much as speed!
iOS 7 is an incredible shift within the feel and appear of apps—the first significant sea switch because the iPhone used to be first brought. For apps to mix in with the hot UI, every one wishes an entire redecorate. starting iOS Programming: construction and Deploying iOS functions begins on the beginning—including an creation to target C—and grants the abilities you want to get your apps up and operating. writer Nick Harris has vast adventure constructing for iOS and gives an outstanding history for educating the development blocks of app development.
- examine Objective-C and the way it differs from different programming languages
- flip your app notion into an actionable plan
- construct every one characteristic with assistance from standalone chapters
- gather your undertaking right into a real-world iOS app
Throughout the ebook, youll be ready to scan with dozens of recipes from real-life eventualities, developing an app as you study. The books site positive aspects obtain pattern apps to keep on with in addition to the guide, and pattern code to demonstrate principles.
Read Online or Download Beginning iOS Programming Building and Deploying iOS Applications PDF
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Additional info for Beginning iOS Programming Building and Deploying iOS Applications
Sample text
Factory methods of Objective-C core classes always return an object that has autorelease called on it before it is returned. Listing 2-20 shows how the SimpleClass would generally be implemented now that you understand the autorelease method. secondInt = secondIntValue; [simpleClass autorelease]; return simpleClass; } In a piece of code that creates a simpleClass using the factory method, it may want that object to stay in memory even after the autorelease pool has been drained. To increase its retain count and make sure it stays in memory, you would call retain on the instance.
First because you cannot overload the + operator, and the second because an NSString cannot be changed after it’s created. It has no methods like concat. It is an immutable object. To do the same in Objective-C, you would use the NSMutableString class, a subclass of NSString. Listing 2-32 shows how you would use the NSMutableString class to append other strings. LISTING 2-32: Concatenating Strings in Objective-C // this code is correct in Objective-C NSString *firstString = @"This is a"; NSString *secondString = @"full sentence"; NSMutableString [combinedString [combinedString [combinedString *combinedString = [[NSMutableString alloc] init]; appendString:firstString]; appendString:@" "]; appendString:secondString]; The idea between mutable and immutable objects is used throughout Objective-C.
In Objective-C, Methods Are Visible to Other Classes Methods in a Java or C# class can also be declared public, making them visible to other objects. This is not the case with Objective-C. In Objective-C all methods that are declared in the interface are visible to other classes. If a class needs a private method, it just adds the method to the implementation. All code within the implementation can call that method, but it will not be visible to any classes that import the header file. In Objective-C, Most Classes Inherit from NSObject Another key concept of object-oriented languages is the capability of one class to inherit from another.
Beginning iOS Programming Building and Deploying iOS Applications by Nick Harris
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