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J04ΞϓϦ࡞ೖ
,.$OPOZMFOF
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͜ͷεϥΠυʹ͍ͭͯ
w य़߹॓Ͱൃදͨ͠ͷ
w "OESPJEฤʢεϥΠυʣ͋Γ·ͪ͢͜Β
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ࣗݾհ
w OPOZMFOF ͷʹΕΜ
w ,.$ೋճੜSPPU
w (JU)VCIBUFOBFUDʜ
w QZUIPO
KBWB "OESPJE
,PUMJOFUDʜ
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͢͜ͱ
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J04ͷجຊ
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J04ΞϓϦ࣮
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࡞͢ΔΞϓϦ
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4UBDLFS
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͏"1*
w 4UBDL0WFSqPX"1*
w ΈΜͳେ͖ɺϓϩάϥϛϯάͷ2"αΠτ
w QVCMJD"1*Ͱݕࡧৄࡉ͕औΕΔ
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4UBDL0WFSqPX"1*
w υΩϡϝϯτ
w IUUQTBQJTUBDLFYDIBOHFDPNEPDT
w TFBSDI"1* ྫλΠτϧʹ4XJGU
w IUUQTBQJTUBDLFYDIBOHFDPNTFBSDI
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No content
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(JU)VC
IUUQTHJUIVCDPN
OPOZMFOF4UBDLFSJ04
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8IZJ04
w "OESPJEΛͯ͠Δͱત·͘͠ͳΔ
w TXJGU࠷ߴͦ͏
w ΤϛϡϨʔλૣͦ͏
w όʔδϣϯͳͦ͞͏
w ڥྑͦ͞͏
w ྡࣳ੨
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࣍
w J04ͱ
w ηοτΞοϓɾ)FMMP8PSME
w ΞϓϦΛ࡞Δ
w ײ
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J04
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J04ͱ
w "QQMFͷ04
w .BD049Λ࠶ߏͨ͠ͷ
w J1IPOFJ1PEUPVDIJ1BE
w ຊʹ͓͚ΔγΣΞ
w ࠷৽
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։ൃڥ
w 0CK$4XJGU
w ݩʑ0CK$ͷΈ͕ͩͬͨɺ
ʹ৽ݴޠ4XJGU͕ొ
w ࠓճ4XJGUΛ͍·͢
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։ൃڥ
w 9DPEF
w "QQMFͷ04༻ͷ*%&
w "QQMFɺNBDݶఆ
w ࣮࣭ແྉ NBDΛങ͑
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4XJGUͷจ๏ʢܰ͘ʣ
class Piyo : Foo {
var text: String?
func makeHoge(str: String) -> Bar {
self.text = str
let hoge = Hoge(text: str)
return home as! Bar
}
func printText() {
print("text: " + text!)
}
}
Optional
(Nullable)
Unwrap
(NonNull)
ఆ
ม
֎෦Ҿ໊
Ωϟετ
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ηοτΞοϓ
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ςϯϓϨʔτ
w 4JOHMF7JFX"QQMJDBUJPOΛબ
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໊শઃఆ
w "OESPJEͱಉ༷4UBDLFSʹ
w ݴޠ4XJGU
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όʔδϣϯ
w J04ػछ͕"QQMFͷΈ
w ʢαϙʔτରʣػछ͝ͱͷόʔδϣϯ͕ࠩͳ͍
w ࠷όʔδϣϯΛେ͖ΊʹઃఆͰ͖Δ
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ΞϓϦΛىಈ
w Λଓɺ্ʹ͋Δl⾣z
Λԡͯ͠ΞϓϦΛىಈ
w J04ΤϛϡϨʔλ͕ૣ͍
w ࣮ػσόοάແྉԽ
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ॳظঢ়ଶΛோΊΔ
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7JFX$POUSPMMFSTXJGU
class ViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
}
w ը໘੍ޚ
w ಛʹԿ͍ͯ͠ͳ͍
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.BJOTUPSZCPBSE
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4UPSZ#PBSE
w ը໘ͷભҠϨΠΞτͳͲΛܾఆ͢Δ
w جຊతʹ9DPEFΛ௨ͯ͡͏
w ͍ํޙͰઆ໌
w ࣮ଶYNM
w ࠓViewController͕Ұͭ͋ΔͷΈ
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1SPKFDU&EJUPS
w ϓϩδΣΫτͷઃఆ
w Ϗϧυ
w ໊લ
w όʔδϣϯ
w FUDʜ
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)FMMP8PSME
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4UPSZ#PBSEΛ։͘
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-BCFMΛυϥοάͯ͠ஔ
https://gyazo.com/1ed1655e91611e4808c1f7b6dd71102a
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)FMMP
8PSMEͱهೖ
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ΞϓϦΛىಈ
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J04
w ϨΠΞτߏ͜ͷΑ͏ʹ4UPSZ#PBSEͰߦ͏
w Ϛε͕͋Δͱศར
w ը໘͕େ͖͍ͱศར
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ΞϓϦ࡞
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ϑϩʔΛߟ͑Δ
ᶃݕࡧϫʔυΛೖྗͤ͞Δ
ᶅ"1*Λୟ͍ͯ݁ՌΛऔಘ
ᶅ+40/Λॲཧ
ᶆॲཧͨ݁͠ՌΛදࣔ͢Δ
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ᶃݕࡧϫʔυΛೖྗ
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ϨΠΞτ࡞
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ը໘ΛΈཱͯΔ
w ը໘ύʔπͷ͜ͱΛViewͱ͍͏
w ೖྗཝͱϦετදࣔͷύʔπΛ্ԼʹฒΔ
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4FBSDI#BSͷઃஔ
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5BCMF7JFXͷઃஔ
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5BCMF7JFXΛ͛Δ
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w 4FBSDI#BS
w ݕࡧόʔ
w 5BCMF7JFX
w ಉ͡छྨͷ7JFXΛ܁Γฦ͠දࣔ͢Δ
w ޙͰৄ͘͠આ໌
5BCMF7JFX4FBSDI#BS
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4FBSDI#BSͷઃఆ
ೖྗώϯτ
ςʔϚ
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ϓϨϏϡʔ
w "TTJTUBOU&EJUPSΛ͏
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ϓϨϏϡʔ
w ӈଆදࣔʹ1SFWJFXΛબ
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7JFX่յ
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8IZ
w ੲJ04ը໘αΠζ͕ಉͩͬͨ͡
w ͜ͷ࣌αΠζݻఆͰେৎͩͬͨ
w ࠓσόΠεʹΑͬͯҟͳΔ
ˠ ಛఆͷը໘αΠζͰௐ͢ΔͱଞͰ߹Θͳ͍
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"VUP-BZPVU
w 7JFXͷҐஔɾαΠζΛ
ʮ੍ $POTUSBJO
ʯͰࢦఆ͢Δ
w ࠓ·Ͱઈରతɺ͜Ε૬ରత
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"VUP-BZPVU
w ଞʢʣͷ7JFXͱͷʜ
w ڑΛࢦఆ͢Δ
w 9Λἧ͑Δ
w ෯Λἧ͑Δ
w ॎԣൺΛࢦఆ͢ΔFUDʜ
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"VUP-BZPVU
w 7JFXΛબɺӈԼͷϘλϯ܈Ͱࢦఆ
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4FBSDI#BSͷ੍
w ্Լࠨӈͷ7JFXͱ͢Δ
੍ͷՃ
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4FBSDI#BSͷ੍
w ্Լࠨӈͷ7JFXͱ͢Δ
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5BCMF7JFXͷ੍
w Լࠨӈͷ7JFXͱ͢Δ
w ্4FBSDI#BSͳͷͰ
͏ܾఆ͍ͯ͠Δ
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5BCMF7JFXͷ੍
w Լࠨӈͷ7JFXͱ͢Δ
w ্4FBSDI#BSͳͷͰ
͏ܾఆ͍ͯ͠Δ
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7JFXޭ
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ΞϓϦΛىಈ
w Ϧετ෦ۭന
w ԿΛදࣔͤ͞Δ͔Λ
·ܾͩΊ͍ͯͳ͍
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4FBSDIˠจࣈྻऔಘ
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ϑϩʔ
w Ϣʔβʔ͕4FBSDIΛ࣮ߦ
&OUFSΩʔ
w ͦΕʹԠͯ͡(&5
3FRVFTUΛඈ͢ ᶄ
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7JFX$POUSPMMFSͷ࡞ɾඥ͚
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7JFX$POUSPMMFS
w ViewΛཧ͢ΔΫϥε
w ࠓ·ͰViewControllerͷදࣔ͢ΔView
Λઃఆ͍ͯͨ͠
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.BJO7JFX$POUSPMMFS࡞
w ੍ޚͷͨΊʹMainViewControllerΛ࡞͢Δ
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.BJO7JFX$POUSPMMFS࡞
w ੍ޚͷͨΊʹMainViewControllerΛ࡞͢Δ
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7JFX$POUSPMMFSͷؔ࿈͚
w $VTUPN$MBTTʹઃఆ
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7JFXͷඥ͚
w "TTJTUBOU&EJUPSӈʹMainViewController
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7JFXͷඥ͚
w 7JFXΛબ$USMΛԡ͠ͳ͕Βυϥοά
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7JFXͷඥ͚
w ૠೖ͍ͨ͠ॴʹΧʔιϧΛ߹ΘͤΔ
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7JFXͷඥ͚
w ໊લΛೖྗ
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7JFXͷඥ͚
w ඥ͚ྃʂʂʂ
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https://gyazo.com/10b37a14a684630c5d176d95ca529180
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Ωʔϫʔυऔಘ
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Ωʔϫʔυऔಘ
• Ϣʔβʔ͕ݕࡧΛ࣮ߦ͢Δ
→ func searchBarSearchButtonClicked
(searchBar: UISearchBar)
͕ݺΕΔ
→ searchBar ͔ΒςΩετΛऔಘ͢Δ
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import UIKit
class MainViewController: UIViewController, UISearchBarDelegate {
@IBOutlet weak var searchBar: UISearchBar!
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
}
}
6*4FBSDI#BS%FMFHBUF
• UISearchBarDelegate Λ࣮
(SearchBar ؔͷϝιουΛ࣮ߦͰ͖ΔΑ͏ʹ͢Δ)
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import UIKit
class MainViewController: UIViewController, UISearchBarDelegate {
@IBOutlet weak var searchBar: UISearchBar!
@IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
}
}
• searchBar ؔͷϝιουͷݺͼઌΛ self(ࣗ) ʹ
6*4FBSDI#BS%FMFHBUF
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ϘλϯͷΫϦοΫ
import UIKit
class MainViewController: UIViewController, UISearchBarDelegate {
…
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
}
func searchBarSearchButtonClicked(searchBar: UISearchBar) {
let searchText = searchBar.text
}
}
• searchBarSearchButtonClicked ͕ݺΕΔͷͰɺ
searchBar ͷςΩετΛऔಘ
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"MFSUʹग़ͯ͠ΈΔ
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ᶄ"1*Ͱ+40/औಘ
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ωοτϫʔΫ
w ࠓճϥΠϒϥϦΛΘͣʹੜ4XJGUͰ
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func searchBarSearchButtonClicked(searchBar: UISearchBar) {
let searchText = searchBar.text
let encodedText = searchText!.
stringByAddingPercentEncodingWithAllowedCharacters(
.URLQueryAllowedCharacterSet())!
let url = "https://api.stackexchange.com/2.2/search?~~~~" +
encodedText + "&site=stackoverflow&filter=!
6JEajsykLFu3W"
}
63-Λ࡞
w 63-
Τϯίʔυ
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ϦΫΤετΛ͛Δ
w J04Ͱ6*ͷߋ৽ʹ͏εϨουҰͭ
w ͜ͷεϨουҎ֎Ͱ6*ؔΛ࿔ΔͱΤϥʔ
w ωοτϫʔΫͷϦΫΤετɺ
ϝΠϯεϨουͰߦ͏͖Ͱͳ͍
w ϦΫΤετʹ͕͔͔࣌ؒΔͱը໘͕ݻ·ΔͨΊ
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ϦΫΤετΛ͛Δ
• NSURLSession
w όοΫάϥϯυͰ௨৴ͯ͘͠ΕΔ
w J04ΑΓ͏͜ͱ͕Ͱ͖Δ
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NSURLSession.sharedSession().dataTaskWithURL(NSURL(string: url)!,
completionHandler: {data, response, error in
…
dispatch_async(dispatch_get_main_queue(), {
let message = NSString(data: data!, …)! as String
let alert = UIAlertController(…, message: message, …)
alert.addAction(UIAlertAction(title: "OK", …))
self.presentViewController(alert, …)
})
}).resume()
• ϥϜμࣜͷ෦ϝΠϯεϨουͰͳ͍
• ΞϥʔτΛग़͍͕ͨ͠མͪͯ͠·͏
/463-4FTTJPOΛͬͨϦΫΤετ
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NSURLSession.sharedSession().dataTaskWithURL(NSURL(string: url)!,
completionHandler: {data, response, error in
…
dispatch_async(dispatch_get_main_queue(), {
let message = NSString(data: data!, …)! as String
let alert = UIAlertController(…, message: message, …)
alert.addAction(UIAlertAction(title: "OK", …))
self.presentViewController(alert, …)
})
}).resume()
• dispatch_get_main_queue() Λͬͯ
ϝΠϯεϨουͰ࣮ߦ
• ͜͜ͰΞϥʔτΛग़͍ͯ͠Δ
/463-4FTTJPOΛͬͨϦΫΤετ
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ᶅ+40/Λॲཧ
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+40/Λύʔε
try! NSJSONSerialization.JSONObjectWithData(data!,
options:NSJSONReadingOptions.MutableContainers)
as! NSDictionary as! [String: AnyObject]
• KTPOΛΦϒδΣΫτʹม
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+40/Λύʔε
try! NSJSONSerialization.JSONObjectWithData(data!,
options:NSJSONReadingOptions.MutableContainers)
as! NSDictionary as! [String: AnyObject]
• NSDictionary ʹม
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+40/Λύʔε
try! NSJSONSerialization.JSONObjectWithData(data!,
options:NSJSONReadingOptions.MutableContainers)
as! NSDictionary as! [String: AnyObject]
• Swift ʹ͓͚Δ࿈ྻʹม
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+40/Λύʔε
try! NSJSONSerialization.JSONObjectWithData(data!,
options:NSJSONReadingOptions.MutableContainers)
as! NSDictionary as! [String: AnyObject]
• ྫ֎Λແࢹ
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σʔλอ࣋Ϋϥε
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σʔλอ࣋Ϋϥε
w ฦ͖ͬͯͨ+40/ΛಡΈࠐΈɺΫϥεʹ֨ೲ͢Δ
w σʔλΛѻ͍͘͢͢ΔͨΊ
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σʔλอ࣋Ϋϥε
• Question ΫϥεΛ࡞Δ
• Question.swift Λ࡞
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import Foundation
class Question {
let isAnswered: Bool
let ownerName: String
let upVoteCount: Int
let tags: [String]
init(dict: [String: AnyObject]) {
isAnswered =
dict["is_answered"] as! Bool
upVoteCount =
dict["up_vote_count"] as! Int
title = dict[“title"] as! String
let owner = dict["owner"]
as! [String: AnyObject]
ownerName =
owner["display_name"] as! String
}
}
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import Foundation
class Question {
let isAnswered: Bool
let ownerName: String
let upVoteCount: Int
let tags: [String]
init(dict: [String: AnyObject]) {
isAnswered =
dict["is_answered"] as! Bool
upVoteCount =
dict["up_vote_count"] as! Int
title = dict[“title"] as! String
let owner = dict["owner"]
as! [String: AnyObject]
ownerName =
owner["display_name"] as! String
}
}
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import Foundation
class Question {
let isAnswered: Bool
let ownerName: String
let upVoteCount: Int
let tags: [String]
init(dict: [String: AnyObject]) {
isAnswered =
dict["is_answered"] as! Bool
upVoteCount =
dict["up_vote_count"] as! Int
title = dict[“title"] as! String
let owner = dict["owner"]
as! [String: AnyObject]
ownerName =
owner["display_name"] as! String
}
}
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KTPOΛ2VFTUJPOʹม
let dict = try! NSJSONSerialization.JSONObjectWithData(…)
as! NSDictionary as! [String: AnyObject]
let questions = (dict["items"] as! [[String: AnyObject]]).map{
item -> Question in
Question(dict: item)
}
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RVFTUJPOT<>ͷUJUMFΛग़͢
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ᶆॲཧͨ݁͠ՌΛදࣔ
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5BCMF7JFX
ಉ͡7JFXΛ܁Γฦ͠Ϧετදࣔ͢Δ7JFX
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ී௨ʹ্͔ΒViewΛஔ͚͍͍͡ΌΜʁ
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w
⚠ཁૉ͕ݸҎ্ʹͳΔ͜ͱ
w ྫ5XJUUFS
w ͜ͷ࣌ݸಉ࣌ʹViewΛอ࣋ɾཧ͢Δʁ
ˠେͳϝϞϦɾॲཧΛফඅͯ͠͠·͏
5BCMF7JFX
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w Ϧετදࣔಉ͡ߏͷView͕࿈ͳΔ
w จࣈྻͷ༰͕ҧ͏͚ͩ
ˠɹอ࣋ɾཧը໘ʹදࣔ͞ΕΔViewͷΈ
ˠɹҰ࡞ͬͨView࠶ར༻͠ɺ
දࣔ࣌ʹ༰Λมߋ͢Δ
5BCMF7JFX
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w ͯ͢Λอ࣋ɾཧ
ී௨ͷ7JFX
View
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
࣮ࡍͷදࣔྖҬ →
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w อ࣋ɾཧը໘্ͷΈ
5BCMF7JFX
TableView
3
4
5
6
7
8
9
10
11
ະੜ
࣮ࡍͷදࣔྖҬ →
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εΫϩʔϧ͞ΕΔͱʜ
TableView
3
4
5
6
7
8
9
10
11
ະੜ
View ͷ࠶ར༻
දࣔྖҬ →
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εΫϩʔϧ͞ΕΔͱʜ
View
5
6
7
8
9
10
11
3 ->12
4 ->13
ະੜ
← ৽͍͠Λઃఆ
දࣔྖҬ →
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Ϧετදࣔ
߲ͷViewΛ࡞
ˣ
TableViewʹදࣔ
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߲ͷ7JFX $FMM
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࡞Γ·ͨ͠
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*EFOUJpFSΛઃఆ
w TableView͕CellΛ۠ผ͢Δͷʹඞཁ
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w 2VFTUJPO5BCMF7JFX$FMMΛ࡞
w $FMMΛಠࣗΫϥεʹͯ͠ཧ
$VTUPN7JFXΫϥε
import UIKit
class QuestionTableViewCell: UITableViewCell {
}
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$VTUPN7JFXʹඥ͚
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$FMMͷ7JFXΛඥ͚
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$FMMͷ7JFXΛඥ͚
import UIKit
class QuestionTableViewCell: UITableViewCell {
@IBOutlet weak var countLabel: UILabel!
@IBOutlet weak var checkImageView: UIImageView!
@IBOutlet weak var titleLabel: UILabel!
@IBOutlet weak var tagLabel: UILabel!
@IBOutlet weak var bodyLabel: UILabel!
@IBOutlet weak var dateLabel: UILabel!
@IBOutlet weak var authorLabel: UILabel!
}
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class QuestionTableViewCell: UITableViewCell {
@IBOutlet weak var countLabel: UILabel!
…
var question: Question? {
didSet {
bindQuestion(question!)
}
}
private func bindQuestion(question: Question) {
countLabel.text = String(question.upVoteCount)
checkImageView.hidden = !question.isAnswered
…
}
}
Setter
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class MainViewController: UIViewController, UISearchBarDelegate,
UITableViewDelegate, UITableViewDataSource {
@IBOutlet weak var searchBar: UISearchBar!
@IBOutlet weak var questionTableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
questionTableView.dataSource = self
questionTableView.delegate = self
}
}
w Delegate Λ࣮
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class MainViewController: UIViewController, UISearchBarDelegate,
UITableViewDelegate, UITableViewDataSource {
@IBOutlet weak var searchBar: UISearchBar!
@IBOutlet weak var questionTableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
searchBar.delegate = self
questionTableView.dataSource = self
questionTableView.delegate = self
}
}
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• ॴ͕Ҿͱͯ͠དྷΔ
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func tableView(tableView: UITableView, cellForRowAtIndexPath
indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("questionCell",
forIndexPath: indexPath) as! QuestionTableViewCell
cell.question = self.questions[indexPath.row]
return cell
}
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func tableView(tableView: UITableView, cellForRowAtIndexPath
indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("questionCell",
forIndexPath: indexPath) as! QuestionTableViewCell
cell.question = self.questions[indexPath.row]
return cell
}
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func tableView(tableView: UITableView, cellForRowAtIndexPath
indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("questionCell",
forIndexPath: indexPath) as! QuestionTableViewCell
cell.question = self.questions[indexPath.row]
return cell
}
• ಘΒΕͨ Cell QuestionTableViewCell
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func tableView(tableView: UITableView, cellForRowAtIndexPath
indexPath: NSIndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCellWithIdentifier("questionCell",
forIndexPath: indexPath) as! QuestionTableViewCell
cell.question = self.questions[indexPath.row]
return cell
}
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w ηΫγϣϯͷ
• Cell ͷ
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func numberOfSectionsInTableView(tableView:
UITableView) -> Int {
return 1
}
func tableView(tableView: UITableView,
numberOfRowsInSection section: Int) -> Int {
return self.questions.count
}
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let dict = try! NSJSONSerialization.JSONObjectWithData(…)
as! NSDictionary as! [String: AnyObject]
self.questions = (dict["items"] as! [[String: AnyObject]]).map{
item -> Question in
Question(dict: item)
}
self.questionTableView.reloadData()
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w tableViewͷCellΛΫϦοΫͨ࣌͠ʹݺΕΔ
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func tableView(tableView: UITableView, didSelectRowAtIndexPath
indexPath: NSIndexPath) {
let question = questions[indexPath.row]
let url = NSURL(string: question.link)!
UIApplication.sharedApplication().openURL(url)
}
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w question.linkΛSafariͰ։͘
ΫϦοΫͯ͠4BGBSJΛ։͘
func tableView(tableView: UITableView, didSelectRowAtIndexPath
indexPath: NSIndexPath) {
let question = questions[indexPath.row]
let url = NSURL(string: question.link)!
UIApplication.sharedApplication().openURL(url)
}
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