iOS应用内购买订阅从SKProduct获得免费试用期长度
我正在使用订阅进行应用内购买。 在swift中,您可以从SKProduct获取价格和价格区域设置,如下所示:iOS应用内购买订阅从SKProduct获得免费试用期长度,ios,in-app-purchase,storekit,in-app-subscription,skproduct,Ios,In App Purchase,Storekit,In App Subscription,Skproduct,我正在使用订阅进行应用内购买。 在swift中,您可以从SKProduct获取价格和价格区域设置,如下所示: weeklyProduct.price.doubleValue weeklyProduct.priceLocale.currencySymbol 其中weeklyProduct是SKProduct 有可能获得免费试用期吗?例如,我为该产品指定了两周的免费试用期。我可以从SKProduct获得此信息吗?试用期不包含在SKProduct信息中,必须硬编码到应用程序中或存储在您的服务器上
weeklyProduct.price.doubleValue
weeklyProduct.priceLocale.currencySymbol
其中weeklyProduct是SKProduct
有可能获得免费试用期吗?例如,我为该产品指定了两周的免费试用期。我可以从SKProduct获得此信息吗?试用期不包含在SKProduct信息中,必须硬编码到应用程序中或存储在您的服务器上。获取此类信息的唯一可用选项(当前)是从收据本身。从iOS 11.2开始,您可以使用
SKProduct
的属性获取有关试验的信息
它包含类的实例,描述了包括免费试用在内的所有折扣期。您可以获得它,但如上所述,它只能从iOS 11.2开始工作,对于其他版本,您必须通过API从服务器获得它 下面是我使用的示例代码:
if #available(iOS 11.2, *) {
if let period = prod.introductoryPrice?.subscriptionPeriod {
print("Start your \(period.numberOfUnits) \(unitName(unitRawValue: period.unit.rawValue)) free trial")
}
} else {
// Fallback on earlier versions
// Get it from your server via API
}
func unitName(unitRawValue:UInt) -> String {
switch unitRawValue {
case 0: return "days"
case 1: return "weeks"
case 2: return "months"
case 3: return "years"
default: return ""
}
}
作为灵感,我创建了SKProduct.PeriodUnit的扩展
extension SKProduct.PeriodUnit {
func description(capitalizeFirstLetter: Bool = false, numberOfUnits: Int? = nil) -> String {
let period:String = {
switch self {
case .day: return "day"
case .week: return "week"
case .month: return "month"
case .year: return "year"
}
}()
var numUnits = ""
var plural = ""
if let numberOfUnits = numberOfUnits {
numUnits = "\(numberOfUnits) " // Add space for formatting
plural = numberOfUnits > 1 ? "s" : ""
}
return "\(numUnits)\(capitalizeFirstLetter ? period.capitalized : period)\(plural)"
}
}
使用:
if #available(iOS 11.2, *),
let period = prod?.introductoryPrice?.subscriptionPeriod
{
let desc = period.unit.description(capitalizeFirstLetter: true, numberOfUnits: period.numberOfUnits)
} else {
// Fallback
}
let price = product.priceString()
print(price)
这将创建一个格式良好的字符串(例如1天、1周、2个月、2年)Nice one@scott Wood。我会把它变成
SKProduct.PeriodUnit
的一个属性,而不是一个函数。这将使行为与枚举更加一致:
@available(iOS 11.2, *)
extension SKProduct.PeriodUnit {
var description: String {
switch self {
case .day: return "day"
case .week: return "week"
case .month: return "month"
case .year: return "year"
// support for future values
default:
return "N/A"
}
}
func pluralisedDescription(length: Int) -> String {
let lengthAndDescription = length.description + " " + self.description
let plural = length > 1 ? lengthAndDescription + "s" : lengthAndDescription
return plural
}
}
然后是一个函数,根据description
属性返回复数形式
是的,正如其他人所指出的,如果你的应用程序有其他语言版本,你应该本地化复数。我已经用DateComponents Formatter解决了这个问题,这为你节省了大量的时间,可以用不同的语言本地化和处理复数等等。 这看起来像是很多代码,但我希望它能在将来节省我的时间
import Foundation
class PeriodFormatter {
static var componentFormatter: DateComponentsFormatter {
let formatter = DateComponentsFormatter()
formatter.maximumUnitCount = 1
formatter.unitsStyle = .full
formatter.zeroFormattingBehavior = .dropAll
return formatter
}
static func format(unit: NSCalendar.Unit, numberOfUnits: Int) -> String? {
var dateComponents = DateComponents()
dateComponents.calendar = Calendar.current
componentFormatter.allowedUnits = [unit]
switch unit {
case .day:
dateComponents.setValue(numberOfUnits, for: .day)
case .weekOfMonth:
dateComponents.setValue(numberOfUnits, for: .weekOfMonth)
case .month:
dateComponents.setValue(numberOfUnits, for: .month)
case .year:
dateComponents.setValue(numberOfUnits, for: .year)
default:
return nil
}
return componentFormatter.string(from: dateComponents)
}
}
它需要将SKProduct period单位转换为NSCalendarUnit
import StoreKit
@available(iOS 11.2, *)
extension SKProduct.PeriodUnit {
func toCalendarUnit() -> NSCalendar.Unit {
switch self {
case .day:
return .day
case .month:
return .month
case .week:
return .weekOfMonth
case .year:
return .year
@unknown default:
debugPrint("Unknown period unit")
}
return .day
}
}
您可以从订阅期调用它,如下所示:
import StoreKit
@available(iOS 11.2, *)
extension SKProductSubscriptionPeriod {
func localizedPeriod() -> String? {
return PeriodFormatter.format(unit: unit.toCalendarUnit(), numberOfUnits: numberOfUnits)
}
}
你也可以这样打电话给SKProduct折扣。请注意,我目前没有实施其他付款模式
import StoreKit
@available(iOS 11.2, *)
extension SKProductDiscount {
func localizedDiscount() -> String? {
switch paymentMode {
case PaymentMode.freeTrial:
return "Free trial for \(subscriptionPeriod.localizedPeriod() ?? "a period")"
default:
return nil
}
}
}
Swift 5 使用和回答作为灵感:
import StoreKit
extension SKProduct {
func priceString() -> String {
let period:String = {
switch self.subscriptionPeriod?.unit {
case .day: return "day"
case .week: return "week"
case .month: return "month"
case .year: return "year"
case .none: return ""
case .some(_): return ""
}
}()
let price = self.localizedPrice!
let numUnits = self.subscriptionPeriod?.numberOfUnits ?? 0
let plural = numUnits > 1 ? "s" : ""
return String(format: "%@ for %d %@%@", arguments: [price, numUnits, period, plural])
}
}
使用:
if #available(iOS 11.2, *),
let period = prod?.introductoryPrice?.subscriptionPeriod
{
let desc = period.unit.description(capitalizeFirstLetter: true, numberOfUnits: period.numberOfUnits)
} else {
// Fallback
}
let price = product.priceString()
print(price)
结果:
THB 89.00 for 7 days
THB 149.00 for 1 month
下面是swift 5的更紧凑、使用时间更短的版本,扩展了SKProductSubscriptionPeriod 用法:
print("\(period.localizedDescription) free trial")
//Printed example "1 week free trial"
实施:
extension SKProductSubscriptionPeriod {
public var localizedDescription: String {
let period:String = {
switch self.unit {
case .day: return "day"
case .week: return "week"
case .month: return "month"
case .year: return "year"
@unknown default:
return "unknown period"
}
}()
let plural = numberOfUnits > 1 ? "s" : ""
return "\(numberOfUnits) \(period)\(plural)"
}
}
目标C
#import "SKProduct+SKProduct.h"
-(NSString*_Nullable)localizedTrialDuraion{
if (@available(iOS 11.2, *)) {
NSDateComponentsFormatter *formatter = [[NSDateComponentsFormatter alloc] init];
[formatter setUnitsStyle:NSDateComponentsFormatterUnitsStyleFull]; //e.g 1 month
formatter.zeroFormattingBehavior = NSDateComponentsFormatterZeroFormattingBehaviorDropAll;
NSDateComponents * dateComponents = [[NSDateComponents alloc]init];
[dateComponents setCalendar:[NSCalendar currentCalendar]];
switch (self.introductoryPrice.subscriptionPeriod.unit) {
case SKProductPeriodUnitDay:{
formatter.allowedUnits = NSCalendarUnitDay;
[dateComponents setDay:self.introductoryPrice.subscriptionPeriod.numberOfUnits];
break;
}
case SKProductPeriodUnitWeek:{
formatter.allowedUnits = NSCalendarUnitWeekOfMonth;
[dateComponents setWeekOfMonth:self.introductoryPrice.subscriptionPeriod.numberOfUnits];
break;
}
case SKProductPeriodUnitMonth:{
formatter.allowedUnits = NSCalendarUnitMonth;
[dateComponents setMonth:self.introductoryPrice.subscriptionPeriod.numberOfUnits];
break;
}
case SKProductPeriodUnitYear:{
formatter.allowedUnits = NSCalendarUnitYear;
[dateComponents setYear:self.introductoryPrice.subscriptionPeriod.numberOfUnits];
break;
}
default:{
return nil;
break;
}
break;
}
[dateComponents setValue:self.introductoryPrice.subscriptionPeriod.numberOfUnits forComponent:formatter.allowedUnits];
return [formatter stringFromDateComponents:dateComponents];
} else {
// Fallback on earlier versions
}
return nil;
}否。您可以从获取信息,说明订阅当前是否处于免费试用期,但不包括免费试用期。好的,谢谢。明白了,回答得很好。如果您想本地化,请使用stringdicts而不是
复数
变量:这是最优雅的解决方案,因为它正确地考虑了本地化。同意,非常好地完成了Roel。