import android.annotation.SuppressLint;
import android.app.backup.BackupManager;
import android.content.Context;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.util.Log;
import java.lang.reflect.Method;
import java.util.Locale;
public class LanguageUtils {
private static final String TAG = LanguageUtils.class.getSimpleName();
//默认语言
public static final Locale LOCALE_DEFAULT = Locale.ENGLISH;
/**
* 选择语言
*
* @param localeKey localeKey
* @param isUpdateSystem 是否更新系统语言
* @return 选择成功true, 反之false
*/
public static boolean switchLanguage(Context context, String localeKey, boolean isUpdateSystem) {
if (context == null) {
return false;
}
Locale locale = getLocale(localeKey);
return switchLanguage(context, locale, isUpdateSystem);
}
/**
* 选择语言
*
* @param locale Local
* @param isUpdateSystem 是否更新系统语言
* @return 选择成功true, 反之false
*/
public static boolean switchLanguage(Context context, Locale locale, boolean isUpdateSystem) {
if (context == null) {
return false;
}
//更新主程序语言
boolean updateMainResult = updateMainLanguage(context, locale);
if (!updateMainResult) {
return false;
}
//更新系统语言
if (isUpdateSystem) {
updateSystemLanguage(locale);
}
return true;
}
//更新主程序语言
private static boolean updateMainLanguage(Context context, Locale locale) {
Resources resources = context.getResources();
//更新主程序的语言
Configuration config = resources.getConfiguration();
//主程序语言和目标语言一致则不处理
if (config.locale.equals(locale)) {
Log.w(TAG, "主程序语言与目标语言一致，无需处理");
return false;
}
config.locale = locale;
//更新主程序语言
resources.updateConfiguration(config, resources.getDisplayMetrics());
return true;
}
// 更新系统语言
@SuppressLint("PrivateApi")
private static void updateSystemLanguage(Locale locale) {
try {
Object objIActMag;
Class<?> clzIActMag = Class.forName("android.app.IActivityManager");
Class<?> clzActMagNative = Class.forName("android.app.ActivityManagerNative");
Method mtdActMagNative$getDefault = clzActMagNative.getDeclaredMethod("getDefault");
objIActMag = mtdActMagNative$getDefault.invoke(clzActMagNative);
Method mtdIActMag$getConfiguration = clzIActMag.getDeclaredMethod("getConfiguration");
Configuration config = (Configuration) mtdIActMag$getConfiguration.invoke(objIActMag);
if (config == null) {
Log.w("", "updateSystemLanguage failed, config = null");
return;
}
config.locale = locale;
Class<?> clzConfig = Class.forName("android.content.res.Configuration");
java.lang.reflect.Field userSetLocale = clzConfig.getField("userSetLocale");
userSetLocale.set(config, true);
// 此处需要声明权限:android.permission.CHANGE_CONFIGURATION。防止重走生命周期需要configChanges加locale
Class<?>[] clzParams = {Configuration.class};
Method mtdIActMag$updateConfiguration = clzIActMag.getDeclaredMethod("updateConfiguration", clzParams);
mtdIActMag$updateConfiguration.invoke(objIActMag, config);
BackupManager.dataChanged("com.android.providers.settings");
} catch (Exception e) {
e.printStackTrace();
}
}
private static Locale getLocale(final String lankey) {
if (LangKey.ZH_CN.equals(lankey)) {
return Locale.CHINA;
} else if (LangKey.ZH_TW.equals(lankey)) {
return Locale.TAIWAN;
} else if (LangKey.EN_US.equals(lankey)) {
return Locale.ENGLISH;
} else if (LangKey.JA_JP.equals(lankey)) {
return Locale.JAPAN;
} else if (LangKey.KO_KR.equals(lankey)) {
return Locale.KOREA;
} else if (LangKey.LO_LA.equals(lankey)) {
return new Locale("lo", "la");
} else if (LangKey.KM_KH.equals(lankey)) {
return new Locale("km", "kh");
} else if (LangKey.TL_PH.equals(lankey)) {
return new Locale("tl", "ph");
} else if (LangKey.MY_MM.equals(lankey)) {
return new Locale("my", "mm");
} else {
String[] locales = Resources.getSystem().getAssets().getLocales();
for (String s : locales) {
if (s.length() == 5) {
Log.e(TAG, "getLocale lankey = " + lankey + ", s = " + s);
}
}
return getLocale(lankey, Resources.getSystem().getAssets().getLocales());
}
}
private static Locale getLocale(String lanKey, String[] locales) {
//android7.0 平台的语言分隔符是“-”，以前的版本是下划线_
lanKey = lanKey.replace("_", "-");
for (int i = 0; i < locales.length; i++) {
final String s = locales[i];
final int len = s.length();
if (len == 5) {
String language = s.substring(0, 5);
String country = s.substring(3, 5);
Locale l = new Locale(language, country);
if (l.getLanguage().equalsIgnoreCase(lanKey)) {
return new Locale(s.substring(0, 2), s.substring(3, 5));
}
}
}
return LOCALE_DEFAULT;
}
public static class LangKey {
//---------------语言名字key---------------
//中文简体
public static final String ZH_CN = "zh_cn";
//中文繁体
public static final String ZH_TW = "zh_tw";
//英语
public static final String EN_US = "en_us";
//日语
public static final String JA_JP = "ja_jp";
//韩语
public static final String KO_KR = "ko_kr";
//柬埔寨语
public static final String KM_KH = "km_kh";
//泰国
public static final String TH_TH = "th_th";
//法语
public static final String FR_FR = "fr_fr";
//越南语
public static final String VI_VN = "vi_vn";
//菲律宾语
public static final String TL_PH = "tl_ph";
//马来西亚语
public static final String MS_MY = "ms_my";
//缅甸语
public static final String MY_MM = "my_mm";
//捷克语
public static final String CS_CZ = "cs_cz";
//印度尼西亚语
public static final String IN_ID = "in_id";
//老挝语
public static final String LO_LA = "lo_la";
//俄语
public static final String RU_RU = "ru_ru";
//印度
public static final String HI_IN = "hi_in";
}
}
注意：需要加权限
<uses-permission android:name="android.permission.CHANGE_CONFIGURATION" tools:ignore="ProtectedPermissions" />
注意：更改系统语言会重走activity生命周期，如果不需要重走生命周期，需要对activity设置android:configChanges=“layoutDirection|locale”
更改系统的配置，签名也应该是系统签名和sharedUserId。不然会类似以下的错误！
error：
java.lang.SecurityException: Permission Denial: updateConfiguration() from pid=31594, uid=10099 requires android.permission.CHANGE_CONFIGURATION
