SwiftUI previews not working with pluralization using stringsdict files

Question

Has anyone successfully gotten plurals to preview in SwiftUI?

Apple uses a .stringsdict file for handling pluralization. However, when attempting to render that string in a preview, for example:

Text("days \(1)", tableName: "Pluralized", bundle: Bundle.module)

The pluralization never seems to work properly when previewed in Xcode. At runtime it works.

Answer 1

You have to use lld, not d, as your format character for the number.

This does not work:

    <key>days %d</key>
    <dict>
      <key>NSStringLocalizedFormatKey</key>
      <string>%#@days@ fa</string>
      <key>days</key>
      <dict>
        <key>NSStringFormatSpecTypeKey</key>
        <string>NSStringPluralRuleType</string>
        <key>NSStringFormatValueTypeKey</key>
        <string>d</string>
        <key>one</key>
        <string>%d giorno</string>
        <key>other</key>
        <string>%d giorni</string>
      </dict>
    </dict>

Instead, write your pluralized string in this way:

    <key>days %lld</key>
    <dict>
      <key>NSStringLocalizedFormatKey</key>
      <string>%#@days@ fa</string>
      <key>days</key>
      <dict>
        <key>NSStringFormatSpecTypeKey</key>
        <string>NSStringPluralRuleType</string>
        <key>NSStringFormatValueTypeKey</key>
        <string>lld</string>
        <key>one</key>
        <string>%lld giorno</string>
        <key>other</key>
        <string>%lld giorni</string>
      </dict>
    </dict>