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https://github.com/jinsasaki/inapppurchase
A Simple and Lightweight framework for In App Purchase (Store Kit 1)
https://github.com/jinsasaki/inapppurchase
appstore carthage inapppurchase ios ios11 purchase store storekit swift swift4
Last synced: 3 months ago
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A Simple and Lightweight framework for In App Purchase (Store Kit 1)
- Host: GitHub
- URL: https://github.com/jinsasaki/inapppurchase
- Owner: jinSasaki
- License: mit
- Archived: true
- Created: 2017-09-05T07:07:09.000Z (over 7 years ago)
- Default Branch: master
- Last Pushed: 2022-03-04T08:55:29.000Z (almost 3 years ago)
- Last Synced: 2024-09-28T22:02:51.837Z (3 months ago)
- Topics: appstore, carthage, inapppurchase, ios, ios11, purchase, store, storekit, swift, swift4
- Language: Swift
- Homepage:
- Size: 248 KB
- Stars: 288
- Watchers: 7
- Forks: 30
- Open Issues: 10
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
# InAppPurchase
[](https://travis-ci.org/jinSasaki/InAppPurchase)
[](https://github.com/Carthage/Carthage)
[](http://cocoapods.org/pods/InAppPurchase)
[](http://cocoapods.org/pods/InAppPurchase)
[](https://codecov.io/gh/jinSasaki/InAppPurchase)
A Simple, Lightweight and Safe framework for In App Purchase
## Feature
- Simple and Light :+1:
- Support [Promoting In-App Purchases](https://developer.apple.com/app-store/promoting-in-app-purchases/) :moneybag:
- No need to consider `StoreKit`! :sunglasses:
- High coverage and safe :white_check_mark:
## Installation
### Carthage
```txt
github "jinSasaki/InAppPurchase"
```
### CocoaPods
```ruby
pod "InAppPurchase"
```
## Usage
### Setup Observer
**NOTE: This method should be called at launch.**
```swift
let iap = InAppPurchase.default
iap.addTransactionObserver(fallbackHandler: {
// Handle the result of payment added by Store
// See also `InAppPurchase#purchase`
})
```
If you want to detect the unexpected transactions, pass `addTransactionObserver()` with `fallbackHandler`.
For example, your app requested a payment, but it crashed in that process. That transaction is not finished, and then will receive at next launch.
This `fallbackHandler` is called when any handlers are not set to `InAppPurchase` via `purchase(productIdentifier: handler:)` method and so on.
#### Promoting In App Purchases is available from iOS 11. `InAppPurchase` supports it!
Add observer with `shouldAddStorePaymentHandler`.
See also [`SKPaymentTransactionObserver#paymentQueue(_:shouldAddStorePayment:for:)`](https://developer.apple.com/documentation/storekit/skpaymenttransactionobserver/2877502-paymentqueue)and [Promoting In-App Purchases Guides](https://developer.apple.com/library/content/documentation/NetworkingInternet/Conceptual/StoreKitGuide/PromotingIn-AppPurchases/PromotingIn-AppPurchases.html#//apple_ref/doc/uid/TP40008267-CH11-SW1)
```swift
let iap = InAppPurchase.default
iap.set(shouldAddStorePaymentHandler: { (product) -> Bool in
// Return whether starting payment
}, handler: { (result) in
// Handle the result of payment added by Store
// See also `InAppPurchase#purchase`
})
```
**:warning: Do not use `Product#priceLocale`**
Only if purchase via AppStore Promoting, `SKProduct#priceLocale` has been not initialized. It occurs a BAD_ACCESS crash. This is a StoreKit bug.
InAppPurchace resolved the crash that is occurred when received the payment, but it occurs when accessed `Product#priceLocale` yet.
So, I recommend not to use `Product#priceLocale` in AppStore Promoting Payment process.
#### Stop payment observing if needed.
```swift
let iap = InAppPurchase.default
iap.removeTransactionObserver()
```
### Fetch Product Information
```swift
let iap = InAppPurchase.default
iap.fetchProduct(productIdentifiers: ["PRODUCT_ID"], handler: { (result) in
switch result {
case .success(let products):
// Use products
case .failure(let error):
// Handle `InAppPurchase.Error`
}
})
```
### Restore Completed Transaction
```swift
let iap = InAppPurchase.default
iap.restore(handler: { (result) in
switch result {
case .success(let productIds):
// Restored with product ids
case .failure(let error):
// Handle `InAppPurchase.Error`
}
})
```
### Purchase
```swift
let iap = InAppPurchase.default
iap.purchase(productIdentifier: "PRODUCT_ID", handler: { (result) in
// This handler is called if the payment purchased, restored, deferred or failed.
switch result {
case .success(let response):
// Handle `PaymentResponse`
case .failure(let error):
// Handle `InAppPurchase.Error`
}
})
```
### Transaction handling
If you want to handle the timing to complete transaction, set `shouldCompleteImmediately` to `false` at initializing.
```swift
let iap = InAppPurchase(shouldCompleteImmediately: false)
iap.purchase(productIdentifier: "PRODUCT_ID", handler: { (result) in
// This handler is called if the payment purchased, restored, deferred or failed.
switch result {
case .success(let response):
// Handle `PaymentResponse`
// MUST: InAppPurchase does not complete transaction, if purchased, restored. Your app must call `InAppPurchase.finish(transaction:)`.
if response.state == .purchased || response.state == .restored {
iap.finish(transaction: response.transaction)
}
case .failure(let error):
// Handle `InAppPurchase.Error`
}
})
```
### Multiple instances of InAppPurchase
If you want to use multiple InAppPurchase, make each instance.
**However, be careful the fallback handling because of duplicate handlings.**
This is duplicate handling example:
```swift
let iap1 = InAppPurchase.default
let iap2 = InAppPurchase(shouldCompleteImmediately: false)
iap1.addTransactionObserver(fallbackHandler: {
// NOT CALLED
// This fallback handler is NOT called because the purchase handler is used.
})
iap2.addTransactionObserver(fallbackHandler: {
// CALLED
// This fallback handler is called because the purchase handler is not associated to iap2.
})
iap1.purchase(productIdentifier: "your.purchase.item1", handler: { (result) in
// CALLED
})
```
To avoid this situation, I recommend to **specify product IDs for each instance**.
```swift
let iap1 = InAppPurchase(shouldCompleteImmediately: true, productIds: ["your.purchase.item1", "your.purchase.item2"])
let iap2 = InAppPurchase(shouldCompleteImmediately: false, productIds: ["your.purchase.item3", "your.purchase.item4"])
iap1.addTransactionObserver(fallbackHandler: {
// NOT CALLED
// This fallback handler is NOT called because the purchase handler is used.
})
iap2.addTransactionObserver(fallbackHandler: {
// NOT CALLED
// This fallback handler is NOT called because "your.purchase.item1" is not specified for iap2.
})
iap1.purchase(productIdentifier: "your.purchase.item1", handler: { (result) in
// CALLED
})
```
In addition, if you do not specify `productIds` or set `productIds: nil`, the iap instance allow all product ids.
## For Dependency Injection
The purchase logic in the App should be safe and testable.
For example, you implemented a class to execute In-App-Purchase as follows.
```swift
// PurchaseService.swift
import Foundation
import InAppPurchase
final class PurchaseService {
static let shared = PurchaseService()
func purchase() {
// Purchase with `InAppPurchase`
InAppPurchase.default.purchase(productIdentifier: ...) {
// Do something
}
}
}
```
It is hard to test this class because using the `InAppPurchase.default` in the purchase process.
This `PurchaseService` can be refactored to inject the dependency.
Use `InAppPurchaseProvidable` protocol.
```swift
// PurchaseService.swift
import Foundation
import InAppPurchase
final class PurchaseService {
static let shared = PurchaseService()
let iap: InAppPurchaseProvidable
init(iap: InAppPurchaseProvidable = InAppPurchase.default) {
self.iap = iap
}
func purchase() {
// Purchase with `InAppPurchase`
iap.purchase(productIdentifier: ...) {
// Do something
}
}
}
```
And then you can test `PurchaseService` easily with `InAppPurchaseStubs.framework`.
```swift
// PurchaseServiceTests.swift
import XCTest
@testable import YourApp
import InAppPurchaseStubs
// Test
final class PurchaseServiceTests: XCTestCase {
func testPurchase() {
let expectation = self.expectation(description: "purchase handler was called.")
let iap = StubInAppPurchase(purchaseHandler: { productIdentifier, handler in
// Assert productIdentifier, handler, and so on.
})
let purchaseService = PurchaseService(iap: iap)
purchaseService.purchase(productIdentifier: ...) {
// Assert result
expectation.fulfill()
}
wait(for: [expectation], timeout: 1)
}
}
```
If you want more information for test, see also [InAppPurchaseStubs](./InAppPurchaseStubs/Stubs/) and [Tests](./Tests/).
## Requirements
- iOS 9.0+
- Xcode 9+
- Swift 4+
## License
MIT