Applanga SwiftUI SDK for iOS Localization

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Version: 2.0.202

Website: https://www.applanga.com

Changelog: https://www.applanga.com/changelog/ios

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NOTE: The latest version of the SDK currently only works for Xcode 16. For Xcode 15 please use version ​2​.​0​.​​195​

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Table of Contents

1. Installation
2. Configuration
3. Usage

Automatic Push Notification Localization and InfoPlist.strings

Installation

CocoaPods [?]

1. Refer to CocoaPod’s Getting Started Guide for detailed instructions about CocoaPods.

2. After you have created your Podfile, insert this line of code: pod 'ApplangaSwiftUI', to be able to do screenshots during UI Tests insert pod 'ApplangaUITest' for your UI Test Target.

3. Once you have done so, re-run pod install from the command line.

Swift Package Manager [?]

NOTE: This is only supported in Xcode versions 12+

1: Simply add the repo url https://github.com/applanga/sdk-swiftui as a swift package dependency, and select the latest release tag

Configuration

See https://www.applanga.com/docs/integration-documentation/ios#configuration

Usage

Basic:

See: https://www.applanga.com/docs/integration-documentation/ios#configuration

Extended:

1. Code Localization

   To enable localization globally in your app, add the following line before creating your App object

   import ApplangaSwiftUI
   
   @main
   struct SomeApp: App {
   }

   There is no need to add the import in every View file

   1.1 Strings

   SwiftUI components can be created normally, by passing the Applanga dashboard key name as the argument

   Text("text_title1")
   TextField("text_field_title1", text: $text, axis: .horizontal)
   Button("button_title1") {}

   The key would be automatically localized by the SDK

   1.2 LocalizedStringKey

   All existing LocalizedStringKey usages should be converted to ApplangaLocalizedStringKey to enable localization using the SDK. To easily perform it in one place, add the following line before creating your App object

   typealias LocalizedStringKey = ApplangaLocalizedStringKey
   
   @main
   struct SomeApp: App {
   }

   Now no additional code changes are required, and the following examples would also be localized

   Text(LocalizedStringKey("text_title1"))
   Toggle(LocalizedStringKey("text_title2"), isOn: $toggle)
   Label(ApplangaLocalizedStringKey("text_title3"))

   1.3 String Interpolation

   String interpolation is supported with the SDK, the same way SwifUI generates localization keys. The following example shows what keys are taken from the dashbaord when creating the components

   1.3a The required key is: text_interpolation%lld, and the localized value would be formatted with 5

   let number = 5
   Text("text_interpolation\(number)")

   1.3b The required key is: text_interpolation%.2f, and the localized value would be formatted with 55.00

   let number = 55.0
   TextField("text_interpolation\(number, specifier: "%.2f")", text: $text) 

   1.3c The required key is: text_interpolation_%@_1, and the localized value would be formatted with SomeText

   let textValue = "SomeText"
   TextField("text_interpolation_\(textValue)_1", text: $text)

   1.3d The required key is: text_interpolation_%@_%@, and the localized value would be formatted with PositionValue1 followed by PositionValue2

   let positionValue1 = "PositionValue1"
   let positionValue2 = "PositionValue2"
   TextField("text_interpolation_\(positionValue1)_\(positionValue2)_1", text: $text)

   The positional formatting can be provided in the translation itself, for example by setting the localized value to: Text Interpolation Pos2 %2$@ Pos 1 %1$@

   1.4 Attributed Strings

   1.4a When creating a SwiftUI component, use the init method for AttributedString that has localized as the first argument (all the variations are supported)

   Text(AttributedString(localized: "text_attributed1", options: options, including: scope))

   The localized value can include all the natively supported attributes

   1.4b When using String.LocalizationValue to create attributed strings, it is needed to convert it to String.ApplangaLocalizationValue To easily perform it in one place, add the following line before creating your App object

   extension String {
   	typealias LocalizationValue = ApplangaLocalizationValue
   }
   
   @main
   struct SomeApp: App {
   }

   Text(AttributedString(localized: String.LocalizationValue("text_attributed4"), options: options, including: scope))

   1.4c Interpolation and format arguments is also supported for attributed strings the same way as previously described for normal strings In the example below the required key is: text_attributed%lld, and the localized value would be formatted with 1

   let count: Int = 1
   Text(AttributedString(localized: "text_attributed\(count)", options: options, including: scope))

2. Update Content

   To trigger an update call:

   @main
   struct SomeApp: App {
   	var body: some Scene {
       	WindowGroup {
           	ZStack {
   			}
   			.onAppear {
   				Applanga.update { success in
   				}
   			}
   		}
   	}
   }

3. Change Language

   See https://www.applanga.com/docs/integration-documentation/ios#usage

4. Screenshot Capturing

   The best method to take screenshots for your translations with SwiftUI is doing your screenshots within UITests as described in Automated during UITests.

   To enable the collection of string positions on your screen with SwiftUI you need to enable the applanga ID mode, which means that every string will shown by its ID and not by its localization. This is the only method to be 100% accurate on linking the correct ids with their positions to the screenshot. To enable the applanga show ID mode pass the parameter to your ApplangaUITest instance:

   	let app = XCUIApplication()
   	let applangaUITest = ApplangaUITest(app: app, enableShowIdMode: true)
   	app.launch()

   A good practice is to take all your screenshots with show id mode enabled once and then take all screenshots without the show id mode. Then all screenshots have the correct translations linked to them and you still can see the screenshot with the actual translations.