A list of Android locales for different Android versions along with the correct format for values folders both using the old notation and BCP47.

• API 10: Gingerbread
• API 15: Ice Cream Sandwich
• API 16: Jelly Bean
• API 17: Jelly Bean
• API 18: Jelly Bean
• API 19: Kitkat
• API 21: Lollipop
• API 22: Lollipop
• API 23: Marshmallow
• API 24: Nougat
• API 25: Nougat
• API 26: Oreo
• API 27: Oreo
• API 28: Pie
• API 29: Android 10

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