Facebook Reactions New version of SDK is 4.16.x(Swift) and Graph API Version is 2.8.
With the Graph API 2.6 Facebook has given support to fetch (read only) the Reactions on Timeline Posts.
We can get the Facebook post reactions via graph API : /{post-id}/reactions. We have to pass parameters like fields and summary as described in getReactions function. Note : Here I am writing sample for only first post.
Closures are self-contained blocks of functionality that can be passed around and used in your code. Closures in Swift are similar to blocks in C and Objective-C and to lambdas in other programming languages.
Syntax with Function
[code language=”obj-c”]
func yourFunctionName(parameter:Type, … , withCompletionHandler:(result:Type) -> Void)
[/code]
For more closure syntax : goshdarnclosuresyntax.com
Example
Function Definition:
[code language=”obj-c”]
func closureReturn(isTest:Bool, withCompletionHandler:(result:String) -> Void) {
if(isTest){
withCompletionHandler(result: "Yes")
}
else{
withCompletionHandler(result: "No")
}
}
[/code]
Calling Function:
[code language=”obj-c”]
closureReturn(true) { (result) -> Void in
print(result)
}
[/code]
Output should be respective to value true/false.
In next post I will write a tutorial on a wrapper class for Alamofire with use of SwiftyJSON by using closures.
By giving you a simple example that we can not change the corner radius from the design view. We have to change it run time. If you want to make possible it with design time then you can use the @IBDesignable and @IBInspectable.
So, We are taking an example as IBButtonExtender for this the functionality
Border Color
Border Width
Corner Radius
Create an Custom Class for UIButton with @IBDesignable
Swift
1
2
3
@IBDesignable
classButtonExtender: UIButton{
}
Create an @IBInspectable for Inspect the element. the Border Color property will be added to the list in the right panel when you create button with this class.
Presenting the ButtonExtender for Border Color, Border Width and Corner Radius function with the @IBDesignable and @IBInspectable in the Swift Language.
By making some corner radius and colors, You will get neat and clean output.
Output
Github
Find IBButtonExtender on github
Check other articles on Swift Language.
All suggestions are acceptable. Put it in the comments!
Happy Coding
Request to Access Address Book
Here is simple steps to requesting access to the Address Book in Swift Language iOS 8
Import the framework of Address Book:
[code language=”objc”]
import AddressBook
[/code]
Create an object of Address Book:
[code language=”objc”]
var addressBook: ABAddressBookRef?
[/code]
Create a method for assigning the value to addressBook:
[code language=”objc”]
func createAddressBook(){
var error: Unmanaged<CFError>?
addressBook = ABAddressBookCreateWithOptions(nil, &error).takeRetainedValue()
}
[/code]
Post following code to requesting access:
[code language=”objc”]
switch ABAddressBookGetAuthorizationStatus(){
case .Authorized:
println("Already authorized")
createAddressBook()
/* Access the address book */
case .Denied:
println("Denied access to address book")
case .NotDetermined:
createAddressBook()
if let theBook: ABAddressBookRef = addressBook{
ABAddressBookRequestAccessWithCompletion(theBook,
{(granted: Bool, error: CFError!) in
if granted{
println("Access granted")
} else {
println("Access not granted")
}
})
}
case .Restricted:
println("Access restricted")
default:
println("Other Problem")
}
[/code]
Happy Coding
Bridging header
To import a set of Objective-C files in the same app target as your Swift code, you rely on an Objective-C bridging header to expose those files to Swift. Xcode offers to create this header file when you add an Objective-C file to an existing Swift app.
If you accept, Xcode creates the header file along with the file you were creating, and names it by your product module name followed by adding “-Bridging-Header.h”.
Alternatively, you can create a bridging header yourself by choosing File > New > File > (iOS or OS X) > Source > Header File.
You’ll need to edit the bridging header file to expose your Objective-C code to your Swift code.
To import Objective-C code into Swift from the same target
In your Objective-C bridging header file, import every Objective-C header you want to expose to Swift.
For example:
[code language=”obj-c”]
#import "XYZCustomCell.h"
#import "XYZCustomView.h"
#import "XYZCustomViewController.h"
[/code]
Under Build Settings, make sure the Objective-C Bridging Header build setting under Swift Compiler – Code Generation has a path to the header.
The path should be relative to your project, similar to the way your Info.plist path is specified in Build Settings. In most cases, you should not need to modify this setting.
Any public Objective-C headers listed in this bridging header file will be visible to Swift. The Objective-C functionality will be available in any Swift file within that target automatically, without any import statements. Use your custom Objective-C code with the same Swift syntax you use with system classes.
For Example:
[code language=”obj-c”]
let myCell = XYZCustomCell()
myCell.subtitle = "A custom cell"
[/code]
Helping, Learning, Coding
Source : Apple Documents
