LocaleHelper.java
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package etelligens.com.foodsafety.utils;
import static android.content.Context.MODE_PRIVATE;
import static etelligens.com.foodsafety.utils.Keyword.PREF_LANG;
import android.annotation.TargetApi;
import android.content.Context;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.os.Build;
import android.preference.PreferenceManager;
import android.util.Log;
import java.util.Locale;
public class LocaleHelper {
private static final String TAG="LocaleHelper";
private static final String PREF_NAME = "LangData";
public static Context onAttach(Context context) {
String lang = getPersistedData(context, Locale.getDefault().getLanguage());
Log.e(TAG,"onAttach=="+"language=="+lang);
return setLocale(context, lang);
}
public static String getLanguage(Context context) {
Log.e(TAG,"getLanguage");
return getPersistedData(context, Locale.getDefault().getLanguage());
}
public static Context setLocale(Context context, String language) {
persist(context, language);
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
return updateResources(context, language);
}
return updateResourcesLegacy(context, language);
}
private static String getPersistedData(Context context, String defaultLanguage) {
SharedPreferences preferences = context.getSharedPreferences(PREF_NAME,MODE_PRIVATE);
return preferences.getString(PREF_LANG, defaultLanguage);
}
private static void persist(Context context, String language) {
SharedPreferences preferences = context.getSharedPreferences(PREF_NAME,MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.putString(PREF_LANG, language);
Log.e(TAG,"addLangToPref");
Log.e(TAG,"language=="+language);
editor.apply();
}
@TargetApi(Build.VERSION_CODES.N)
private static Context updateResources(Context context, String language) {
Locale locale = new Locale(language);
Locale.setDefault(locale);
Configuration configuration = context.getResources().getConfiguration();
configuration.setLocale(locale);
configuration.setLayoutDirection(locale);
Log.e(TAG,"updateResources");
return context.createConfigurationContext(configuration);
}
@SuppressWarnings("deprecation")
private static Context updateResourcesLegacy(Context context, String language) {
Locale locale = new Locale(language);
Locale.setDefault(locale);
Resources resources = context.getResources();
Configuration configuration = resources.getConfiguration();
configuration.locale = locale;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
configuration.setLayoutDirection(locale);
}
resources.updateConfiguration(configuration, resources.getDisplayMetrics());
return context;
}
}