Backwards compatible to SDK 17

This commit is contained in:
topjohnwu
2018-12-28 05:15:59 +08:00
parent bb2df02dff
commit 496b22026f
37 changed files with 115 additions and 72 deletions

View File

@@ -52,6 +52,40 @@ public class LocaleManager {
}
}
public static String toLanguageTag(Locale loc) {
if (Build.VERSION.SDK_INT >= 21) {
return loc.toLanguageTag();
} else {
String language = loc.getLanguage();
String country = loc.getCountry();
String variant = loc.getVariant();
if (language.isEmpty() || !language.matches("\\p{Alpha}{2,8}")) {
language = "und"; // Follow the Locale#toLanguageTag() implementation
} else if (language.equals("iw")) {
language = "he"; // correct deprecated "Hebrew"
} else if (language.equals("in")) {
language = "id"; // correct deprecated "Indonesian"
} else if (language.equals("ji")) {
language = "yi"; // correct deprecated "Yiddish"
}
// ensure valid country code, if not well formed, it's omitted
if (!country.matches("\\p{Alpha}{2}|\\p{Digit}{3}")) {
country = "";
}
// variant subtags that begin with a letter must be at least 5 characters long
if (!variant.matches("\\p{Alnum}{5,8}|\\p{Digit}\\p{Alnum}{3}")) {
variant = "";
}
StringBuilder tag = new StringBuilder(language);
if (!country.isEmpty())
tag.append('-').append(country);
if (!variant.isEmpty())
tag.append('-').append(variant);
return tag.toString();
}
}
public static void setLocale(App app) {
String localeConfig = app.prefs.getString(Const.Key.LOCALE, "");
if (localeConfig.isEmpty()) {