In-App based on application language

Question:

How do I show an In-App message based on the application language?

Answer:

In-App content is localized by the Language tag, which the Pushwoosh SDK sets automatically from the device/system language (a lowercase two-letter ISO-639-1 code). Devices whose language has no translation in the template fall back to its default language.

If your app has its own in-app language switcher, the app language may differ from the system language. There are two ways to handle that:

1. Recommended — redefine the Language tag. Call setLanguage() from your app whenever the user picks a language (for example Pushwoosh.configure.setLanguage("de") on iOS). The Language tag then carries the app language, and the In-App is shown in the matching localization — no extra tag or segment needed.
2. Custom tag + segment. If you must keep the system language in the Language tag, create a custom tag (for example App Language) in Audience → Tags, set it from your app with setTags, build a segment on that tag value in Audience → Segments, and attach that segment to the In-App message.

Note: Segments were previously called Filters in the Control Panel.