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How to support per-app language settings in your app
April 30, 2020 Turn off apps open automatically mac.
When you localize your app, people all over the world can view your content in the language they feel most comfortable reading. And with the latest versions of iOS and macOS, people can have even more control by choosing languages on a per-app basis. For example, someone may set their iPhone’s language to English, but want to use a social media app in Arabic.
Good news: If your project is built with iOS 13 or macOS Catalina and localized into more than one language, you won’t have to add any additional code to your app. Simply build and deploy your app to test.
Here’s how someone might check per-app language switching for a specific app, using AllTrails as an example.
Change your language preference. To select your preferred language in Slack, use the steps below. Set specific spellcheck languages for macOS. In the Slack desktop app versions 4.5.0 and above, Slack will use the system-level macOS spellchecker. Under Proofing, if your language shows as Installed, you're ready to go.Otherwise press Not installed and Office will take you to a page where you can download the necessary Language Accessory Pack for that language. Follow the instructions on that page to download and install the pack, then come back to the Office Language Preferences dialog box to confirm that it's now installed. On previously Mac OS X version is was possible to change a single application to a different language via Terminal using a freeware application (Language Switcher and App Language Chooser), but I can't seem to get it to work on Sierra anymore.
- Open the Settings app.
- Navigate to AllTrails > Preferred Language > Language.
- Change the preferred language to Spanish.
- Launch AllTrails from your home screen (or from the App Switcher, if the app is already open).
Once someone has set their preferred languages for an app in Settings, it will then render accordingly in your app.
How to change default video app on mac. AllTrails will now render in Spanish, while the rest of the device continues to display the system language.
Restore your state after a change in the language setting
If someone decides mid-activity that they’d like to view your app in a different language, you can make the experience even smoother for them by restoring their previous state when they return. For example, say you’re living abroad and looking for food using a restaurant delivery app. By default, you use English, but might want to switch the app’s language when viewing a certain restaurant’s menu so that you can better understand its native dishes.
If that app supports state restoration, you can exit to the Settings app and return to the restaurant you were viewing — now in the new language. If not, you’ll have to start from the app’s main screen and find that restaurant again.
If your app supports scene-based state restoration, you can implement
stateRestorationActivity(for scene)
and return an NSUserActivity
that encodes the scene state. (And if you still support view controller state restoration, you can enable state restoration on your app delegate.)How to load custom content in the correct language
If you need to load content from other sources, such as a server, you can do so and ensure that you match the app’s language with a few bundle APIs.
Bundle.main.preferredLocalizations.first
will get the system’s current language in priority order.If you need to check against a custom set of available languages (say, from a server or other source), you can do so with a simple modification to the previous API call. First, find out what available languages there are:
Macos App Store Change Language
Then, use the
preferredLocalization
API with those languages:If it’s not possible to have ongoing communication with the server due to connectivity or other constraints, you can also send the output of
Bundle.main.preferredLocalizations.first
to the server; that way, it will know which language the app has been launched in and deliver content accordingly.How to transition away from a custom language selector in your app
With systemwide support for in-app language selectors, you no longer need to provide a way to select languages within your app if you support iOS 13 or macOS Catalina or later. If you currently offer such a UI, you should remove it to avoid customer confusion and potential conflict with the system.
Macos Change App Language Settings
If you’d like to guide people to the system settings for language selection, you can replace your app’s custom UI with a flow that launches directly into the Settings app on iOS.
On iOS, add the following:
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![Change Change](/uploads/1/3/4/0/134068863/296500204.jpg)
On macOS, direct people to System Preferences > Language & Region to add a per-language setting for your app.