HarmonyOS Developer I18n开发指导

import I18n from '@ohos.i18n';

try {   
  let rtl = I18n.isRTL("zh-CN"); // rtl = false   
  rtl = I18n.isRTL("ar"); // rtl = true
} catch(error) {   
  console.error(`call i18n.System interface failed, error code: ${error.code}, message: ${error.message}`);
}

try {   
  let language = "en";   
  let locale = "zh-CN";   
  let sentenceCase = false;   
  let localizedLanguage = I18n.System.getDisplayLanguage(language, locale, sentenceCase); // localizedLanguage = "英语"
} catch(error) {   
  console.error(`call i18n.System interface failed, error code: ${error.code}, message: ${error.message}`);
}

try {   
  let country = "US";   let locale = "zh-CN";   
  let sentenceCase = false;   
  let localizedCountry = I18n.System.getDisplayCountry(country, locale, sentenceCase); // localizedCountry = "美国"
} catch(error) {   
  console.error(`call i18n.System interface failed, error code: ${error.code}, message: ${error.message}`);
}

import I18n from '@ohos.i18n';

let calendar = I18n.getCalendar("zh-CN", "chinese"); // 创建中文农历日历

let date1 = new Date();
calendar.setTime(date1);
let date2 = 1000;
calendar.setTime(date2);

calendar.set(2021, 12, 21, 6, 0, 0);

calendar.setTimeZone("Asia/Shanghai");
let timezone = calendar.getTimeZone();  // timezone = "China Standard Time"

calendar.setFirstDayOfWeek(1);
let firstDayOfWeek = calendar.getFirstDayOfWeek(); // firstDayOfWeek = 1

calendar.setMinimalDaysInFirstWeek(3);
let minimalDaysInFirstWeek = calendar.getMinimalDaysInFirstWeek(); // minimalDaysInFirstWeek = 3

let localizedName = calendar.getDisplayName("zh-CN"); // localizedName = "农历"

let date = new Date(2022, 12, 12, 12, 12, 12);
let weekend = calendar.isWeekend(date); // weekend = false

import I18n from '@ohos.i18n';

let phoneNumberFormat = new I18n.PhoneNumberFormat("CN", {type: "E164"});

let validNumber = phoneNumberFormat.isValidNumber("15812341234"); // validNumber = true

let formattedNumber = phoneNumberFormat.format("15812341234"); // formattedNumber = "+8615812341234"

import I18n from '@ohos.i18n';

let fromUnit = {unit: "cup", measureSystem: "US"};
let toUnit = {unit: "liter", measureSystem: "SI"};
let number = 1000;let locale = "en-US";
let style = "long";
let converttedUnit = I18n.I18NUtil.unitConvert(fromUnit, toUnit, number, locale, style); // converttedUnit = "236.588 liters"

import I18n from '@ohos.i18n';

let indexUtil = I18n.getInstance("zh-CN");

let indexList = indexUtil.getIndexList(); // indexList = ["...", "A", "B", "C", ..., "X", "Y", "Z", "..."]

indexUtil.addLocale("ar");

let text = "access index";
let index = indexUtil.getIndex(text); // index = "A"

import I18n from '@ohos.i18n';

let locale = "en-US";
let breakIterator = I18n.getLineInstance(locale);

let text = "Apple is my favorite fruit";
breakIterator.setLineBreakText(text);
let breakText = breakIterator.getLineBreakText();  // breakText = "Apple is my favorite fruit"

let pos = breakIterator.current(); // pos = 0

let firstPos = breakIterator.first(); // 将断行对象设置到第一个分割点的位置，即文本的起始位置；
let lastPos = breakIterator.last();  // 将断行对象设置到最后一个分割点的位置，即文本末尾的下一个位置；
// 将断行对象向前或向后移动一定数量的分割点。
// 当传入正数时，向后移动；当传入负数时，向前移动；当未传入数值时，则向后移动一个位置；
// 当移动超出了文本的长度范围，则返回-1；
let nextPos = breakIterator.next(-2); // nextPos = 12
let previousPos = breakIterator.previous();  // 将断行对象向前移动向前移动一个分割点，当超出文本长度范围时返回-1；
// 将断行对象移动到offset指定位置的后面一个分割点。如果offset所指定的位置的下一个分割点超出了文本的长度范围，则返回-1；
let followingPos = breakIterator.following(10); 

let isboundary = breakIterator.isBoundary(5);

import I18n from '@ohos.i18n'

let timezone = I18n.getTimeZone(); // 使用默认参数可以获取系统时区对象。

let timezoneID = timezone.getID(); // timezoneID = "Asia/Shanghai"
let timezoneDisplayName = timezone.getDisplayName(); // timezoneDisplayName = "中国标准时间"
let rawOffset = timezone.getRawOffset(); // rawOffset = 28800000
let offset = timezone.getOffset(new Date().getTime()); // offset = 28800000

let timezoneIDs = I18n.TimeZone.getAvailableIDs(); // timezoneIDs = ["America/Adak", ...]，共包含24个时区ID
let timezone = I18n.getTimeZone(timezoneIDs[0]);
let timezoneDisplayName = timezone.getDisplayName(); // timezoneDisplayName = "夏威夷-阿留申时间"

let zoneCityIDs = I18n.TimeZone.getAvailableZoneCityIDs(); // ["Auckland", "Magadan", ...]
let cityDisplayName = I18n.TimeZone.getCityDisplayName(zoneCityIDs[0], "zh-Hans"); // cityDisplayName = "奥克兰(新西兰)"
let timezone = I18n.TimeZone.getTimezoneFromCity(zoneCityIDs[0]);
let timezoneDisplayName = timezone.getDisplayName(); // timezoneDisplayName = "新西兰时间"

import I18n from '@ohos.i18n'

let ids = I18n.Transliterator.getAvailableIDs(); // ids = ["ASCII-Latin", "Accents-Any", ... ]，共支持671个语言

let transliterator = I18n.Transliterator.getInstance("Any-Latn"); // Any-Latn表示将任意文本转换为Latn文本
let transformText = transliterator.transform("你好"); // transformText = "nǐ hǎo "

import I18n from '@ohos.i18n'

let isDigit = I18n.Unicode.isDigit("1"); // isDigit = true
isDigit = I18n.Unicode.isDigit("a"); // isDigit = false

let isSpaceChar = I18n.Unicode.isSpaceChar(" "); // isSpaceChar = true
isSpaceChar = I18n.Unicode.isSpaceChar("\n"); // isSpaceChar = false

let isWhitespace = I18n.Unicode.isWhitespace(" "); // isWhitespace = true
isWhitespace = I18n.Unicode.isWhitespace("\n"); // isWhitespace = true

let isRTL = I18n.Unicode.isRTL("مرحبًا"); // isRTL = true，阿拉伯语的文字是从左到右书写的文字
isRTL = I18n.Unicode.isRTL("a"); // isRTL = false

let isIdeograph = I18n.Unicode.isIdeograph("你好"); // isIdeograph = true
isIdeograph = I18n.Unicode.isIdeograph("a"); // isIdeograph = false

let isLetter = I18n.Unicode.isLetter("a"); // isLetter = true
isLetter = I18n.Unicode.isLetter("."); // isLetter = false

let isLowerCase = I18n.Unicode.isLowerCase("a"); // isLetter = true
isLowerCase = I18n.Unicode.isLowerCase("A"); // isLetter = false

let isUpperCase = I18n.Unicode.isUpperCase("a"); // isUpperCase = false
isUpperCase = I18n.Unicode.isUpperCase("A"); // isUpperCase = true

let type = I18n.Unicode.getType("a"); // type = U_LOWER_CASE_LETTER

import I18n from '@ohos.i18n'

let order = I18n.I18NUtil.getDateOrder("zh-CN"); // order = "y-L-d"，表示中文中年月日的顺序为年-月-日。