Android(安卓)中英文切换工具类

public class ChangeLanguageHelper {    public static final int LANGUAGE_CHINA = 1;    public static final int LANGUAGE_ENGLISH = 2;    public static final int LANGUAGE_DEFAULT = 0;    private static Context mContext = null;    private static String country = null;    private static String mLanguage = "";    private static Resources mResources;    private static Locale mDefaultLocale;    public static void init(Context context) {        mResources = context.getResources();        country = context.getResources().getConfiguration().locale.getCountry();        mContext = context.getApplicationContext();        int appLanguage = Configure.getAppLanguage();        changeLanguage(appLanguage);    }    /**     * 获取当前字符串资源的内容     */    public static String getStringById(int id) {        String string;        if (mLanguage != null && !"".equals(mLanguage)) {            string = mResources.getString(id, mLanguage);        } else {            string = mResources.getString(id, "");        }        if (string != null && string.length() > 0) {            return string;        }        return "";    }    public static void changeLanguage(int language) {        boolean isChangeLanguage = false;        if (language != Configure.getAppLanguage()) {            isChangeLanguage = true;        }        Configuration config = mResources.getConfiguration();     // 获得设置对象        DisplayMetrics dm = mResources.getDisplayMetrics();       // 获得屏幕参数：主要是分辨率，像素等。        switch (language) {            case LANGUAGE_CHINA:                config.locale = Locale.SIMPLIFIED_CHINESE;     // 中文                config.setLayoutDirection(Locale.SIMPLIFIED_CHINESE);                mLanguage = "zh-CN";                country = "CN";                Configure.setAppLanguage(LANGUAGE_CHINA);                break;            case LANGUAGE_ENGLISH:                config.locale = Locale.ENGLISH;   // 英文                config.setLayoutDirection(Locale.ENGLISH);                mLanguage = "en";                country = "US";                Configure.setAppLanguage(LANGUAGE_ENGLISH);                break;            case LANGUAGE_DEFAULT:                country = Locale.getDefault().getCountry();                if ("US".equals(country) || "GB".equals(country)) {                    mDefaultLocale = Locale.ENGLISH;                } else {                    mDefaultLocale = Locale.SIMPLIFIED_CHINESE;                }                config.locale = mDefaultLocale;         // 系统默认语言                config.setLayoutDirection(mDefaultLocale);                Configure.setAppLanguage(LANGUAGE_DEFAULT);                break;        }        mResources.updateConfiguration(config, dm);        if (isChangeLanguage) {            EventBus.getDefault().post(new AppEvent.ChangeLanguage());        }    }    public static boolean getDefaultLanguage() {        return ("CN".equals(country));    }}
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