By Maher Ali
With Advanced iOS four Programming, builders have the professional suggestions they should create extraordinary functions for Apple's iPhone, iPad, and iPod touch.
Inside, veteran cellular developer Dr. Maher Ali starts off with a starting place advent to goal C and Cocoa contact programming, after which courses readers via construction apps with Apple's iPhone SDK four – together with insurance of the main different types of latest APIs and development apps for the hot Apple iPad.
This e-book concentrates on illustrating GUI innovations programmatically, permitting readers to totally savor the total photo of iOS four improvement with out counting on Interface Builder. moreover, Interface Builder is roofed in different chapters.
Advanced iOS four Programming delves into extra complicated issues going past the fundamentals of iOS four improvement, offering entire insurance that can assist you get your apps to the App shop quicker.
Key positive factors include:
- Objective-C programming language and runtime
- Interface Builder
- Building complex cellular consumer interfaces
- Cocoa Touch
- Core Animation and Quartz 2D
- Model-view-controller (MVC) designs
- Developing for the iPad
- Grand important Dispatch
- Parsing XML records utilizing SAX, DOM, and TouchXML
- Working with the Map package API
- Remote and native Push Notification
- Blocks (closures) in Objective-C
- Building complicated location-based applications
- Developing database purposes utilizing the SQLite engine
- GameKit framework
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Extra info for Advanced iOS 4 Programming: Developing Mobile Applications for Apple iPhone, iPad, and iPod touch
8 Adding a label view to a window in IB. Click on the Label item and drag it onto the middle of the window. 8. When the label is selected, the Inspector window changes to reﬂect the attributes of the label. 9 shows a portion of the attributes of a label in the Inspector window. You can change these attributes and observe the effect they have on the object instantaneously. The label’s text is left-justiﬁed; let’s make it centered. In the Layout item of the attributes, click on the icon indicating center.
18 Step over a function or method call button. After stepping over the statement, we need to inspect the value obtained. 19. A tip appears, showing its value. 19 Inspecting the value of the label after obtaining it from the window. Notice that the value is 0x0. In Objective-C, this value is called nil and means that no object is stored in this variable. After inspecting the tag value and going back and forth between XCode and IB, we ﬁnd the problem, ﬁx it, remove the breakpoint by clicking on it to turn it off, and hit Build and Go.
If you override init, you should call your parent’s init ﬁrst and then perform your initialization. This can be achieved using the super keyword. The keyword super makes the search for the method (here, init) start from the parent class rather than the class of the object, while the variable name self makes the search start from the class of the object where this statement is being executed. You can change the value of self at runtime, but you cannot change super. To change super, you have to change the parent class in the interface and then build your code.
Advanced iOS 4 Programming: Developing Mobile Applications for Apple iPhone, iPad, and iPod touch by Maher Ali