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Merge pull request NSHipster#330 from romanroibu/master
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Update iOS 7 and iOS 8 articles for Swift 2.0
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@natecook1000
natecook1000 committed Sep 15, 2015
2 parents 0c45b6b + f87ecdb commit 3d3076c
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47 changes: 26 additions & 21 deletions 2013-09-23-ios7.md
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Original file line number Diff line number Diff line change
Expand Up @@ -4,8 +4,8 @@ author: Mattt Thompson
category: ""
excerpt: "With the NDA finally lifted, we can finally talk about all of the amazing new APIs in iOS 7."
status:
swift: 1.1
reviewed: May 20, 2015
swift: 2.0
reviewed: Sep 12, 2015
---

With the NDA finally lifted, we can finally talk about all of the amazing new APIs in iOS 7. And there are a _lot_ of them. "1500 new APIs", by Apple's count during the WWDC Keynote. (Granted, a good portion of that could just be all of the changes from `id` to `instancetype`, but that's a huge number, regardless).
Expand All @@ -25,9 +25,9 @@ But no longer! iOS 7 finally bakes-in Base64:
~~~{swift}
let string = "Lorem ipsum dolor sit amet."
if let data = string.dataUsingEncoding(NSUTF8StringEncoding) {
let base64EncodedString = data.base64EncodedStringWithOptions(NSDataBase64EncodingOptions.allZeros)
println(base64EncodedString) // TG9yZW0gaXBzdW0gZG9sYXIgc2l0IGFtZXQu
let base64EncodedString = data.base64EncodedStringWithOptions([])
print(base64EncodedString) // TG9yZW0gaXBzdW0gZG9sYXIgc2l0IGFtZXQu
}
~~~

Expand All @@ -49,8 +49,8 @@ if let components = NSURLComponents(string: "http://nshipster.com") {
components.path = "/iOS7"
components.query = "foo=bar"
println(components.scheme!) // http
println(components.URL!) // http://nshipster.com/iOS7?foo=bar
print(components.scheme!) // http
print(components.URL!) // http://nshipster.com/iOS7?foo=bar
}
~~~

Expand Down Expand Up @@ -86,7 +86,7 @@ Anything with a notion of completed and total units is a candidate for `NSProgre
let progress = NSProgress(totalUnitCount: 100)
progress.completedUnitCount = 42;
println(progress.localizedDescription) // 42% completed
print(progress.localizedDescription) // 42% completed
~~~

~~~{objective-c}
Expand Down Expand Up @@ -133,8 +133,8 @@ Behold!
~~~{swift}
let array = [1, 2, 3] as NSArray
println("First Object: \(array.firstObject)") // First Object: Optional(1)
println("Last Object: \(array.lastObject)") // Last Object: Optional(3)
print("First Object: \(array.firstObject)") // First Object: Optional(1)
print("Last Object: \(array.lastObject)") // Last Object: Optional(3)
~~~

~~~{objective-c}
Expand All @@ -161,8 +161,9 @@ let smileDetector = CIDetector(ofType: CIDetectorTypeFace, context: context,
options: [CIDetectorTracking: true, CIDetectorAccuracy: CIDetectorAccuracyLow])
var features = smileDetector.featuresInImage(ciImage, options: [CIDetectorSmile: true])
if let feature = features.first as? CIFaceFeature where feature.hasSmile {
UIImageWriteToSavedPhotosAlbum(UIImage(CIImage: ciImage)!, self, "didFinishWritingImage", &features)
UIImageWriteToSavedPhotosAlbum(UIImage(CIImage: ciImage), self, "didFinishWritingImage", &features)
} else {
label.text = "Say Cheese!"
}
Expand Down Expand Up @@ -194,11 +195,11 @@ let session = AVCaptureSession()
let device = AVCaptureDevice.defaultDeviceWithMediaType(AVMediaTypeVideo)
var error: NSError?
let input = AVCaptureDeviceInput(device: device, error: &error)
if let error = error {
println("Error: \(error)")
} else {
do {
let input = try AVCaptureDeviceInput(device: device)
session.addInput(input)
} catch let error {
print("Error: \(error)")
}
let output = AVCaptureMetadataOutput()
Expand All @@ -214,7 +215,7 @@ func captureOutput(
captureOutput: AVCaptureOutput!,
didOutputMetadataObjects metadataObjects: [AnyObject]!,
fromConnection connection: AVCaptureConnection!) {
var QRCode: String?
for metadata in metadataObjects as! [AVMetadataObject] {
if metadata.type == AVMetadataObjectTypeQRCode {
Expand All @@ -223,7 +224,7 @@ func captureOutput(
}
}
println("QRCode: \(QRCode)")
print("QRCode: \(QRCode)")
}
~~~

Expand Down Expand Up @@ -290,9 +291,13 @@ Even though the number of people who have actually read something saved for late
~~~{swift}
import SafariServices
let url = NSURL(string: "http://nshipster.com/ios7")
SSReadingList.defaultReadingList().addReadingListItemWithURL(url, title: "NSHipster",
previewText: "...", error: nil)
let url = NSURL(string: "http://nshipster.com/ios7")!
do {
try SSReadingList.defaultReadingList()?.addReadingListItemWithURL(url, title: "NSHipster",
previewText: "...")
} catch let error {
print("Error: \(error)")
}
~~~

~~~{objective-c}
Expand Down Expand Up @@ -345,7 +350,7 @@ let distance = portland.distanceFromLocation(sanFrancisco)
let formatter = MKDistanceFormatter()
formatter.units = .Imperial
println(formatter.stringFromDistance(distance)) // 535 miles
print(formatter.stringFromDistance(distance)) // 535 miles
~~~

~~~{objective-c}
Expand Down
90 changes: 46 additions & 44 deletions 2014-06-09-ios8.md
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,8 @@ author: Mattt Thompson
category: ""
excerpt: "Ask anyone, and they'll tell you: WWDC 2014 was the one of the most exciting in recent memory. This week, we'll take a look beneath the headline features, and share some of the more obscure APIs that everyone should know about."
status:
swift: 1.0
swift: 2.0
reviewed: Sep 12, 2015
---

Ask anyone, and they'll tell you: WWDC 2014 was one of the most exciting in recent memory. It was, first and foremost, a developer event, with nary a hardware announcement to upstage the latest software & developer tools.
Expand Down Expand Up @@ -51,7 +52,7 @@ let energyFormatter = NSEnergyFormatter()
energyFormatter.forFoodEnergyUse = true
let joules = 10_000.0
println(energyFormatter.stringFromJoules(joules)) // "2.39 Cal"
print(energyFormatter.stringFromJoules(joules)) // "2.39 Cal"
~~~

### NSMassFormatter
Expand All @@ -61,7 +62,7 @@ Although the fundamental unit of physical existence, mass is pretty much relegat
~~~{swift}
let massFormatter = NSMassFormatter()
let kilograms = 60.0
println(massFormatter.stringFromKilograms(kilograms)) // "132 lb"
print(massFormatter.stringFromKilograms(kilograms)) // "132 lb"
~~~

### NSLengthFormatter
Expand All @@ -71,7 +72,7 @@ Rounding out the new `NSFormatter` subclasses is `NSLengthFormatter`. Think of i
~~~{swift}
let lengthFormatter = NSLengthFormatter()
let meters = 5_000.0
println(lengthFormatter.stringFromMeters(meters)) // "3.107 mi"
print(lengthFormatter.stringFromMeters(meters)) // "3.107 mi"
~~~

## CMPedometer
Expand All @@ -86,15 +87,16 @@ import CoreMotion
let lengthFormatter = NSLengthFormatter()
let pedometer = CMPedometer()
pedometer.startPedometerUpdatesFromDate(NSDate(), withHandler: { data, error in
if !error {
println("Steps Taken: \(data.numberOfSteps)")
if let data = data {
print("Steps Taken: \(data.numberOfSteps)")
let distance = data.distance.doubleValue
println("Distance: \(lengthFormatter.stringFromMeters(distance))")
if let distance = data.distance?.doubleValue {
print("Distance: \(lengthFormatter.stringFromMeters(distance))")
let time = data.endDate.timeIntervalSinceDate(data.startDate)
let speed = distance / time
println("Speed: \(lengthFormatter.stringFromMeters(speed)) / s")
let time = data.endDate.timeIntervalSinceDate(data.startDate)
let speed = distance / time
print("Speed: \(lengthFormatter.stringFromMeters(speed)) / s")
}
}
})
~~~
Expand All @@ -109,8 +111,8 @@ import CoreMotion
let altimeter = CMAltimeter()
if CMAltimeter.isRelativeAltitudeAvailable() {
altimeter.startRelativeAltitudeUpdatesToQueue(NSOperationQueue.mainQueue(), withHandler: { data, error in
if !error {
println("Relative Altitude: \(data.relativeAltitude)")
if let data = data {
print("Relative Altitude: \(data.relativeAltitude)")
}
})
}
Expand All @@ -124,10 +126,9 @@ if CMAltimeter.isRelativeAltitudeAvailable() {
import CoreLocation
class LocationManagerDelegate: NSObject, CLLocationManagerDelegate {
func locationManager(manager: CLLocationManager!, didUpdateLocations locations: AnyObject[]!) {
let location: CLLocation? = locations[0] as? CLLocation
if let floor: CLFloor? = location?.floor {
println("Current Floor: \(floor?.level)")
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
if let floor = locations.first?.floor {
print("Current Floor: \(floor.level)")
}
}
}
Expand All @@ -148,28 +149,28 @@ The following example shows how statistics summed over the duration of the day c
~~~{swift}
import HealthKit
let collection: HKStatisticsCollection? = ...
let statistics: HKStatistics? = collection!.statisticsForDate(NSDate())
for item: AnyObject in statistics!.sources {
if let source = item as? HKSource {
if let quantity: HKQuantity = statistics!.sumQuantityForSource(source) {
if quantity.isCompatibleWithUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo)) {
let massFormatter = NSMassFormatter()
let kilograms = quantity.doubleValueForUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo))
println(massFormatter.stringFromKilograms(kilograms))
}
if quantity.isCompatibleWithUnit(HKUnit.meterUnit()) {
let lengthFormatter = NSLengthFormatter()
let meters = quantity.doubleValueForUnit(HKUnit.meterUnit())
println(lengthFormatter.stringFromMeters(meters))
}
if quantity.isCompatibleWithUnit(HKUnit.jouleUnit()) {
let energyFormatter = NSEnergyFormatter()
let joules = quantity.doubleValueForUnit(HKUnit.jouleUnit())
println(energyFormatter.stringFromJoules(joules))
}
let collection: HKStatisticsCollection? = nil//...
let statistics: HKStatistics? = collection?.statisticsForDate(NSDate())
let sources: [HKSource] = statistics?.sources ?? []
for source in sources {
if let quantity: HKQuantity = statistics?.sumQuantityForSource(source) {
if quantity.isCompatibleWithUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo)) {
let massFormatter = NSMassFormatter()
let kilograms = quantity.doubleValueForUnit(HKUnit.gramUnitWithMetricPrefix(.Kilo))
print(massFormatter.stringFromKilograms(kilograms))
}
if quantity.isCompatibleWithUnit(HKUnit.meterUnit()) {
let lengthFormatter = NSLengthFormatter()
let meters = quantity.doubleValueForUnit(HKUnit.meterUnit())
print(lengthFormatter.stringFromMeters(meters))
}
if quantity.isCompatibleWithUnit(HKUnit.jouleUnit()) {
let energyFormatter = NSEnergyFormatter()
let joules = quantity.doubleValueForUnit(HKUnit.jouleUnit())
print(energyFormatter.stringFromJoules(joules))
}
}
}
Expand All @@ -196,8 +197,8 @@ NSStream.getStreamsToHostWithName("nshipster.com",
Also filed under: "small but solid fixes", is this convenience method for `NSString`:

~~~{swift}
let string: NSString = "Café"
let substring: NSString = "É"
let string: String = "Café"
let substring: String = "É"
string.localizedCaseInsensitiveContainsString(substring) // true
~~~
Expand Down Expand Up @@ -245,12 +246,13 @@ The Foundation URL Loading System has remained relatively unchanged since last y
import Foundation
let session = NSURLSession()
let task = session.dataTaskWithURL(NSURL(string: "http://nshipster.com"), completionHandler: { data, response, error in
let task = session.dataTaskWithURL(NSURL(string: "http://nshipster.com")!, completionHandler: { data, response, error in
// ...
})
let protectionSpace = NSURLProtectionSpace()
NSURLCredentialStorage.getCredentialsForProtectionSpace(protectionSpace: protectionSpace, task: task, completionHandler: { credentials in
let credentialStorage = NSURLCredentialStorage()
credentialStorage.getCredentialsForProtectionSpace(protectionSpace, task: task, completionHandler: { credentials in
// ...
})
~~~
Expand Down Expand Up @@ -317,7 +319,7 @@ let configuration = WKWebViewConfiguration()
configuration.preferences = preferences
let webView = WKWebView(frame: self.view.bounds, configuration: configuration)
let request = NSURLRequest(URL: NSURL(string: "http://nshipster.com"))
let request = NSURLRequest(URL: NSURL(string: "http://nshipster.com")!)
webView.loadRequest(request)
~~~

Expand Down

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