So I have a method loadLocale()
which I want to use in the MainActivity to set user preferred language stored in shared preferences. The SettingsActivity code looks like below :
public class SettingsActivity extends PreferenceActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
AppPreferenceFragment appPreferenceFragment=(AppPreferenceFragment)getFragmentManager().findFragmentByTag("PreferenceFragment");
if(appPreferenceFragment==null)
appPreferenceFragment = new AppPreferenceFragment();
getFragmentManager()
.beginTransaction()
.replace(android.R.id.content, appPreferenceFragment, "PreferenceFragment")
.commit();
}
public static class AppPreferenceFragment extends PreferenceFragment implements SharedPreferences.OnSharedPreferenceChangeListener, Preference.OnPreferenceClickListener
{
@Override
public void onCreate(final Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
loadLocale();
//Some other code
Preference pref_al = findPreference("select_app_language");
pref_al.setOnPreferenceClickListener(this);
}
@Override
public boolean onPreferenceClick(Preference preference) {
//SOME CODE
else if (preference.getKey().compareTo("select_pref_language")==0){
setupSelectLanguageDialog();
}
return false;
}
public void setupAppLanguageDialog()
{
AlertDialog langChangeDialog;
CharSequence[] changeLangList = {"English", "हिन्दी"};
AlertDialog.Builder mBuilder = new AlertDialog.Builder(getActivity());
mBuilder.setTitle("Choose language");
mBuilder.setSingleChoiceItems(changeLangList, -1, new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
if (i==0)
{
setLocale("en");
getActivity().recreate();
}
else
{
setLocale("hi");
getActivity().recreate();
}
dialogInterface.dismiss();
}
});
langChangeDialog =mBuilder.create();
langChangeDialog.show();
}
public void setLocale(String lang) {
Locale locale = new Locale(lang);
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
getResources().updateConfiguration(config ,getResources().getDisplayMetrics());
DataRepository.setAppLanguage(lang);
Log.v("locale",DataRepository.getUserData("app_lang"));
}
//load langauge saved in shared prefrences
public void loadLocale()
{
String app_lang= DataRepository.getAppLanguage();
if(InputValidator.isNullorEmpty(app_lang) || app_lang.equals(Constants.NO_DATA)){
Log.v("Locale","Empty");
return;
}
setLocale(app_lang);
Log.v("loaded Locale",app_lang);
}
I want to call loadLocale()
method in my mainActivity so that when the application starts , the preferred language is selected by default. My mainActivity looks like :
public class MainActivity extends AppCompatActivity {
//Some declarations
@Override
protected void onCreate(Bundle savedInstanceState) {
//I want to set my app language here by calling loadLocale()
//loadLocale();
//other code
}
I can re-write both the functions again the MainActivity to do so. Is there a better way out?
NOTE : DataRepository.getAppLanguage()
and DataRepository.setAppLanguage()
are methods to store and get app language via SharedPreferences
Why you don't just make a Class with only static functions, passing Parameters if needed and add return type if needed. Then you can call it from anywhere. Example:
class Helper {
public static void loadLocale(Context context)
{
String app_lang= DataRepository.getAppLanguage();
if(InputValidator.isNullorEmpty(app_lang) || app_lang.equals(Constants.NO_DATA)){
Log.v("Locale","Empty");
return;
}
setLocale(app_lang, context);
Log.v("loaded Locale",app_lang);
}
public static void setLocale(String lang, Context context) {
Locale locale = new Locale(lang);
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
context.getResources().updateConfiguration(config ,context.getResources().getDisplayMetrics());
DataRepository.setAppLanguage(lang);
Log.v("locale",DataRepository.getUserData("app_lang"));
}
}