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Android Locale Changer
package com.rayana.himeapp.Utility;
import android.annotation.SuppressLint;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;
import android.os.LocaleList;
import android.preference.PreferenceManager;
import java.util.Locale;
/**
* Created by Ali Hosseini on 9/2/17.
* this class provides changing locale compulsively on application resources
*/
public class LocaleHelper {
private static final String SELECTED_LANGUAGE = "Locale.Helper.Selected.Language";
public static Context onAttach(Context context) {
String lang = getPersistedData(context, Locale.getDefault().getLanguage());
return setLocale(context, lang);
}
public static Context onAttach(Context context, String language) {
return setLocale(context, language);
}
public static String getLanguage(Context context) {
return getPersistedData(context, Locale.getDefault().getLanguage());
}
private static Context setLocale(Context context, String language) {
persist(context, language);
return updateResources(context, language);
}
private static String getPersistedData(Context context, String defaultLanguage) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
return preferences.getString(SELECTED_LANGUAGE, defaultLanguage);
}
@SuppressLint("ApplySharedPref")
private static boolean persist(Context context, String language) {
SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(context);
SharedPreferences.Editor editor = preferences.edit();
editor.putString(SELECTED_LANGUAGE, language);
return editor.commit();
}
private static Context updateResources(Context context, String language) {
Locale locale = new Locale(language);
Locale.setDefault(locale);
Resources resources = context.getResources();
Configuration configuration = resources.getConfiguration();
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
configuration.setLocale(locale);
LocaleList localeList = new LocaleList(locale);
LocaleList.setDefault(localeList);
configuration.setLocales(localeList);
return context.createConfigurationContext(configuration);
} else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
configuration.setLocale(locale);
return context.createConfigurationContext(configuration);
} else {
configuration.locale = locale;
resources.updateConfiguration(configuration, resources.getDisplayMetrics());
}
return context;
}
}
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