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LOCALIZATION
IS HARD
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BEFORE
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2016
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INSTANT
DISTRIBUTION
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Unless processing
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150+
COUNTRIES
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RESPONSIBILITY +
EXPECTATION
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DOWNLOADS +
PROMOTION
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?
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NSLOCALIZEDSTRING
ALL THE THINGS!!!!
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let localizedString =
NSLocalizedString("dot.swift.localizedString", comment:
“NSLocalizedString OMG")
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NOT ENOUGH
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EXAMPLES
PRACTICAL TIPS
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Currency
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let cash = 3.50
let cashString = String(format:
"€%.2f", arguments: [cash])
€3.50 3,50 €
X
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NSNumberFormatter
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let numberFormatter = NSNumberFormatter()
numberFormatter.numberStyle = .CurrencyStyle
numberFormatter.currencyCode = "EUR"
let cashString = numberFormatter.stringFromNumber(3.50)
3,50 €
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NSNumberFormatter
DecimalStyle
CurrencyStyle
PercentStyle
ScientificStyle
SpellOutStyle
OrdinalStyle
CurrencyISOCodeStyle
CurrencyPluralStyle
CurrencyAccountingStyle
Use NSNumberFormatter every
time you are including a Double
or Float in a string
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Long Words
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Rindfleischetikettier
ungsueberwachungs
aufgabenuebertragu
ngsgesetz
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Mock up UI by doubling all
strings. Auto layout helps.
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Capitalization
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let turkey = "Türkiye"
let TURKEY = turkey.uppercaseString
TÜRKIYE TÜRKİYE
X
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.localizedUppercaseString
(iOS9+)
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let turkey = "Türkiye"
let TURKEY =
turkey.localizedUppercaseString
TÜRKİYE
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.uppercaseStringWith
Locale()
(iOS6+)
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When changing string
capitalization, always use
the localized variation
localizedUppercaseString()
localizedLowercaseString()
localizedCapitalizedString()
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Plurals
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if n == 1 {
secondString = "\(n) second"
}
else {
secondString = "\(n) seconds"
}
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ends in 1, excluding 11: 1, 21, 31, 41, 51, 61, 71, 81,
91, 101, 121 …
ends in 2-4, excluding 12-14: 2, 3, 4, 22, 23, 24, 32,
33, 34, 42 …
everything else: 0, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14,
15, 16, 17 …
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is 1: 1
is 2: 2
is 3-6: 3, 4, 5, 6
is 7-10: 7, 8, 9, 10
everything else: 0, 11, 12, 13, 14, 15, 16, 17, 18, 19,
20, 21, 22, 23 …
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.stringsdict
(iOS7+)
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dot.swift.plural
NSStringLocalizedFormatKey
%#@items@
items
NSStringFormatSpecTypeKey
NSStringPluralRuleType
NSStringFormatValueTypeKey
d
one
Установ. для %d выбранных друзей
few
Установ. для %d выбранных друзей
other
Установ. для %d выбранных друзей
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One, two, few, many,
other
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let localizedString = NSLocalizedString("dot.swift.plural",
comment: "Установ. для %d выбранных друзей")
let pluralString =
String.localizedStringWithFormat(localizedString, [number])
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Use .stringsdict for plural
localized strings.
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Address
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Roy Marmelstein
The Stage
Dot.Swift
Théâtre des Variétés
8 boulevard Montmartre
75002 Paris
France
X
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75002 Paris
8 boulevard Montmartre
Théâtre des Variétés
Dot.Swift
The Stage
Roy Marmelstein
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CNPostalAddressFormatter
(iOS9+)
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let postalFormatter = CNPostalAddressFormatter()
let postalAddress = CNMutablePostalAddress()
postalAddress.street = "8 boulevard Montmartre"
postalAddress.city = "Paris"
postalAddress.state = "Ile de France"
postalAddress.postalCode = "75002"
postalAddress.country = "France"
postalAddress.ISOCountryCode = "FR"
let addressString =
postalFormatter.stringFromPostalAddress(postalAddress)
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Address formatter is hidden in
Contacts. Use it when
displaying addresses.
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Distance + weight
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Inch, foot, yard, mile.
Ounce, pound.
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MKDistanceFormatter
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let distance: CLLocationDistance = 100.0 // in Meters
let distanceFormatter = MKDistanceFormatter()
let localDistance =
distanceFormatter.stringFromDistance(distance)
350 feet
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NSMassFormatter
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let weight = 66.0 // in Kg
let massFormatter = NSMassFormatter()
massFormatter.forPersonMassUse = true
let localWeight =
massFormatter.stringFromKilograms(weight)
147.71 lb
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Distance formatter is hidden in
MapKit. NSMassFormatter can
handle all weights.
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DIDN’T DISCUSS
Left to right. Better with iOS9.
A lot of work.
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WHAT’S MISSING
• Gender
• Combination locales / phone
• Misc differences (Chinese -
no initials, French “ !“)
• NS~
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NS
=
Not Swift-y
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github.com/marmelroy/Format
github.com/marmelroy/
Localize-Swift
github.com/AliSoftware/
SwiftGen
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THE BIG PICTURE
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Test Driven
Development
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Localization
Driven
Development
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@marmelroy