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ios-labs-s14:basics-ib [2014/02/16 20:45]
mbarboi
ios-labs-s14:basics-ib [2014/02/17 13:42]
mbarboi
Line 2: Line 2:
  
 The tool used to create interfaces for iOS applications. The tool used to create interfaces for iOS applications.
 +
 What You See Is What You Get, drag and drop system used to put views on controllers. Stores interface information in a **Storyboard** file. What You See Is What You Get, drag and drop system used to put views on controllers. Stores interface information in a **Storyboard** file.
  
-A storyboard is the visual representation of all the scenes, transitions,​ and relationships in an application.+**Storyboard**- file containing ​the visual representation of all the scenes, transitions,​ and relationships in an application. Opens InterfaceBuilder when selected. 
 + 
 +**Scene**- refers to a single view controller and its associated views 
 + 
 +**Segue**- transition between two scenes. Right-click + drag from a button to another view controller to establish. 
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 +**Root View Controller**- the first controller to appear in the context of the entire application OR a UINavigationController. The first is represented by an arrow that points right with no tail on the left side. The second is an arrow between a navigation controller and another view controller, and can be set up by right-click+dragging from the navigation controller.
  
-A scene refers ​to a single view controller: it is a +===Connecting ​to Code=== 
 +Each rectangle on the screen represents ​**View Controller** and contains all the information about the views of the controller.
  
-A segue manages the transition ​between ​two scenes. A segue is established by pressing ctrl key and dragging from one scene to the other. Pushing a view controller ​to the navigation stack and presenting a modal view controller on the click of a button can be done easily with the help of segue thereby reducing ​the need for coding.+No explicit connection exists ​between the views of the controller ​as stored in the storyboard file and the code that makes up the class.
  
-The entire application flow can be seen in the storyboard ​file.+At runtime, the class of the controller is instantiated and paired with the views of the class as built in InterfaceBuilder. In order to realize custom behavior, change the class of objects ​in the storyboard ​by using the **Identity Inspector.** This ensures the class you set is paired with the view you created.
  
-View Controllers- every long rectangle on the screen represents ​ViewControllerThese rectangles are the only things that can “float” in IB's main window+In order for controllers to call methods or change properties of views, they must have **references** to them. A reference is pointer to an objectIn order to connect a view to a controller, you must establish an **IBOutlet** or **IBAction**. The first of these is a variable, ​the second is a delegate method.
  
-Arrowsarrows ​in IB represent relationships between ViewControllers.+  ​-IBOutlet- a variable created by right-click dragging from a view to the header file of its owner (usually a view controller). Must have assistant edit open with header file of appropriate class to connect. Can be public or private based on location inside or outside curly braces. 
 +  -IBAction- a method created by right-click dragging from a button to header file of owning view controller. Must be public. Creates a method declaration and definition ​in target controller. Method is called when button is pressed
ios-labs-s14/basics-ib.txt · Last modified: 2014/02/17 13:42 by mbarboi