This document summarizes a presentation on IOS 8 features and Swift development. It discusses new features in IOS 8 like battery usage indicator, interactive notifications, and healthkit. It then covers the basics of Swift syntax, how it differs from Objective-C, and sample code examples to illustrate arrays, dictionaries, functions and more. It concludes by noting some pros and cons of Swift and provides reference links for further reading.

1. IOS 8 Features
and
Swift Development
Presenter: Vivek Chaudhary, Mindfire Solutions
Date: 08/05/2013

2.  IOS 8 Features
 Swift Development
 Syntax and Basics
 Objective C to Swift
 Sample Code
 Pros and Cons

3.  Battery usage indicator
 Interactive Notifications
 Credit Card Scanning
 New keyboard
 Continuity
 Family Sharing

4.  Message UI and new widgets
 Lock screen app suggestions
 Healthkit
 Improved search results

5.  Some syntax from Java Script
 Smartly detects data types itself
 Objective C API + Additional
 No semicolon
 Body Braces compulsory for If-else

6.  Single file in place of two files (.h and .m)
 Declaration and implementation in the same
file
 Reduces the project size
 Number of files reduces to half

7. 1. let someConstant : String = “constant”
2. var someVar : String = “variable”
 Swift is smart enough to detect data types
 Var someVar = “variable”
 Var var1 = 1
 Var var2 = 1.0

8.  NSString and String both are available
1. Let string = “Hello”
2. Let anotherString = string + “Mindfire”
1. For char in str
2. {
3. // Code Here
4. }

9.  Objective C
 [NSString stringWithFormat:]
 Swift
 (expression)
 Let var1 = 2
 Let var2 = 3
 Println( “Multiplication is : (var1 * var2)”)

10. 1. let someArray:String[] = [“A”, “B”, “C”]
2. let someArray = [“A”, “B”, “C”]
3. var someArray:String[] = [“A”, “B”, “C”]
4. SomeArray += “D”
5. SomeArray += [“D”, “E”]
6. print(“First Element :(someArray[0]) ”)

11. 1. let dict:Dictionary<String, String> = [“A”:”1”,
“B”:”2”]
2. var dict:Dictionary<String, String> = [“A”:”1”,
“B”:”2”]
3. var dict = [“A”:”1”, “B”:”2”]
1. dict[“C”] = “3”
2. Dict += [“D”:”4”, “E”:”5”]

12.  + and – are sliced off.
func functionName(var1:String, var2:String)-
>String
 Functions can return more than one
parameters too.
 These are returned in the form of tuples.

13. Function Definition
func functionName(var1:String, var2:String)-
>(String, Int)
Function Calling
Var result : (res1:String, res2:Int) =
self.functionName(var1:”Hello”, var2:”Mobile”)
Print(“result is (result.res1)”;

14.  Type id changes to AnyObject
 Downcast is done automatically by swift.
 “as” keyword is used to typecast
Var textField: UITextField = array.firstObject() as
UITextField

15. One has to manually change his Objective C code
to Swift
 - changes to func
 + changes to class func
 #define changes to let
 #pragma changes to // MARK :

16.  init is not used in swift.
 InitWith and with is also not used.
 Complex macros should be converted into
functions
Let myColor = UIColor(red:0.5,
green:0.5,blue:0.5, alpha:1.0);

17. PLAYGROUNDS

19. REFRENCE LINKS
https://developer.apple.com/library/prerelease/i
os/documentation/Swift/Conceptual/BuildingCo
coaApps/
http://code.tutsplus.com/tutorials/an-
introduction-to-swift-part-1--cms-21389

20. Presenter: Debasish Mohanty, Mindfire Solutions
Thank you


21. www.mindfiresolutions.com
https://www.facebook.com/MindfireSolutions
http://www.linkedin.com/company/mindfire-solutions
http://twitter.com/mindfires