I'm trying to create a simple Settings Activity with a single setting to change the language of the App.
<PreferenceScreen
xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory
android:title="@string/locale">
<ListPreference
android:key="lang"
android:title="@string/language"
android:summary="@string/languageDesc"
android:entries="@array/languages"
android:entryValues="@array/languageValues"
android:defaultValue="@string/locale_en"/>
</PreferenceCategory>
public class TCPreferenceActivity extends PreferenceActivity implements SharedPreferences.OnSharedPreferenceChangeListener {
@Override
public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
if (key.equals("lang")) {
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putString("lang", sharedPreferences.getString(key, "en_US"));
editor.commit();
settings();
}
}
public void settings() {
Intent intent = new Intent(this, TCPreferenceActivity.class);
intent.putExtra(PreferenceActivity.EXTRA_SHOW_FRAGMENT, TCPreferenceFragment.class.getName());
intent.putExtra(PreferenceActivity.EXTRA_NO_HEADERS, true);
startActivity(intent);
}
@Override
protected void attachBaseContext(Context newBase) {
SharedPreferences pref = newBase.getSharedPreferences("lang", MODE_PRIVATE);
String lang = pref.getString("lang", null);
Locale locale = new Locale(lang);
Context context = TCContextWrapper.wrap(newBase, locale);
super.attachBaseContext(newBase);
}
}
When I debug the activity, i see the updated value being received in the method onSharedPreferenceChanged.
However when i call the Intent to reload the activity, with the context wrapper in order to change the language, the value received from the call to newBase.getSharedPreferences("lang", MODE_PRIVATE) is still the original unchanged value.
When i click again on the preference in the interface, i see that the value hash changed.
Do I need to save the value?
Why doesn't it changed in the SharedPreferences class?
I'm trying to replicate what0s being done in the exemple here:
Android context.getResources.updateConfiguration() deprecated
Thanks in advance.