Android多语言适配

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Android多语言适配

适配多语言主要就是两步

  • 创建针对适配语言values文件夹,比如values-zh,values-en
  • 创建对应语言的Local

方便代码设置创建一个语言工具类,适配了Android7.0

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public class ChangeLanguageHelper {


    private static Context mContext = null;
    private static String country = null;

    public static final int CHANGE_LANGUAGE_CHINA = 1;
    public static final int CHANGE_LANGUAGE_ENGLISH = 2;
    public static final int CHANGE_LANGUAGE_DEFAULT = 0;
    private static String mLanguage = "";

    private static Resources mResources;
    private static Locale mDefaultLocale;

    public static void init(Context context) {
        //mResources = context.getResources();
        initResources(context);
        country = context.getResources().getConfiguration().locale.getCountry();

        mContext = context;
        int currentLanguage = SPUtils.getInstance().getInt(Constraint.APPLANGUAGE,0);
        changeLanguage(currentLanguage);
    }

    /**
     * 获取当前字符串资源的内容
     *
     * @param id
     * @return
     */
    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) {

        Configuration config = mResources.getConfiguration();     // 获得设置对象
        DisplayMetrics dm = mResources.getDisplayMetrics();
        switch (language) {
            case CHANGE_LANGUAGE_CHINA:
                config.locale = Locale.SIMPLIFIED_CHINESE;     // 中文
                config.setLayoutDirection(Locale.SIMPLIFIED_CHINESE);
                mLanguage = "zh-CN";
                country = "CN";
                SPUtils.getInstance().put(Constraint.APPLANGUAGE,CHANGE_LANGUAGE_CHINA);
                break;
            case CHANGE_LANGUAGE_ENGLISH:
                config.locale = Locale.ENGLISH;   // 英文
                config.setLayoutDirection(Locale.ENGLISH);
                mLanguage = "en";
                country = "US";
                SPUtils.getInstance().put(Constraint.APPLANGUAGE,CHANGE_LANGUAGE_ENGLISH);

                break;

            case CHANGE_LANGUAGE_DEFAULT:

                country = Locale.getDefault().getCountry();

                if ("CN".equals(country)){
                    mDefaultLocale = Locale.SIMPLIFIED_CHINESE;
                }else {
                    mDefaultLocale =  Locale.ENGLISH;
                }

                config.locale = mDefaultLocale;         // 系统默认语言
                config.setLayoutDirection(mDefaultLocale);
                SPUtils.getInstance().put(Constraint.APPLANGUAGE,CHANGE_LANGUAGE_DEFAULT);
                break;
        }
        mResources.updateConfiguration(config, dm);

        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {

            LanguageUtils.applyChange(mContext);
        }
        EventBus.getDefault().post("languageChanged");


    }
    public static void initResources(Context context) {
        mResources = context.getResources();
    }

    public static boolean getDefaultLanguage() {
        return ("CN".equals(country));
    }



    public static class LanguageUtils {

        public static Locale getSetLocale() {


            int currentLanguage = SPUtils.getInstance().getInt(Constraint.APPLANGUAGE,0);

            switch (currentLanguage) {
                case ChangeLanguageHelper.CHANGE_LANGUAGE_DEFAULT:
                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                        return Resources.getSystem().getConfiguration().getLocales().get(0);//解决了获取系统默认错误的问题
                    } else {
                        return Locale.getDefault();
                    }
                case ChangeLanguageHelper.CHANGE_LANGUAGE_CHINA:
                    return Locale.CHINA;
                case ChangeLanguageHelper.CHANGE_LANGUAGE_ENGLISH:
                    return Locale.ENGLISH;
                default:
                    return Locale.CHINA;
            }

        }

        @TargetApi(Build.VERSION_CODES.N)
        public static Context wrapContext(Context context) {

            Resources resources = context.getResources();
            Locale locale = LanguageUtils.getSetLocale();

            Configuration configuration = resources.getConfiguration();
            configuration.setLocale(locale);
            LocaleList localeList = new LocaleList(locale);
            LocaleList.setDefault(localeList);
            configuration.setLocales(localeList);
            return context.createConfigurationContext(configuration);
        }

        public static void applyChange(Context context) {
            Resources res = context.getResources();
            DisplayMetrics dm = res.getDisplayMetrics();
            Configuration conf = res.getConfiguration();

            Locale locale = getSetLocale();
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                conf.setLocale(locale);
                LocaleList localeList = new LocaleList(locale);
                LocaleList.setDefault(localeList);
                conf.setLocales(localeList);
            } else {
                conf.locale = locale;
                try
                {
                    conf.setLayoutDirection(locale);
                }
                catch(Exception e)
                {
                    e.printStackTrace();
                }
            }
            res.updateConfiguration(conf, dm);
        }
    }
}

初始化

MyApplication

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@Override
public void onCreate() {
    super.onCreate();
        
    ...    
    ChangeLanguageHelper.init(this);

    }

BaseActivity

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@Override
protected void attachBaseContext(Context newBase) {

    //多语言适配兼容7.0
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
            super.attachBaseContext(ChangeLanguageHelper.LanguageUtils.wrapContext(newBase));
    }else {
        super.attachBaseContext(newBase);
    }
}

手动切换语言

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ChangeLanguageHelper.changeLanguage(ChangeLanguageHelper.CHANGE_LANGUAGE_ENGLISH);

代码设置

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nameTv.setText(ChangeLanguageHelper.getStringById(R.string.login));

说明

设置默认会随着系统语言改变;语言设置后监听eventbus，重新走界面生命周期;
工具类来源于点这里