I want my app to support three languages Spanish,Portuguese & English. And give option to select language in app.I have made
1) 3 drawable folders drawable-es,drawable-pt,drawable.
2) 3 values folder values-es,values-pt,values.Change String.xml values according to languages.
I have imageView to select language.When click it menu open that consists option English,Spanish,Portuguese.
I set Locale inside app on option selection by this code
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.en:
Locale locale = new Locale("en");
Locale.setDefault(locale);
Configuration config = new Configuration();
config.locale = locale;
getBaseContext().getResources().updateConfiguration(config, getBaseContext().getResources().getDisplayMetrics());
Toast.makeText(this, "Locale in English !", Toast.LENGTH_LONG).show();
break;
case R.id.pt:
Locale locale2 = new Locale("pt");
Locale.setDefault(locale2);
Configuration config2 = new Configuration();
config2.locale = locale2;
getBaseContext().getResources().updateConfiguration(config2, getBaseContext().getResources().getDisplayMetrics());
Toast.makeText(this, "Locale in Portugal !", Toast.LENGTH_LONG).show();
break;
case R.id.es:
Locale locale3 = new Locale("es");
Locale.setDefault(locale3);
Configuration config3 = new Configuration();
config3.locale = locale3;
getBaseContext().getResources().updateConfiguration(config3, getBaseContext().getResources().getDisplayMetrics());
Toast.makeText(this, "Locale in Spain !", Toast.LENGTH_LONG).show();
break;
}
return super.onOptionsItemSelected(item);
}
I have declare in Manifest- android:configChanges="locale"
It work but it have some issue.
Problem:-
1)When language selected, screen that consists image of language selection not change but other screens are change.
2)After orientation change app restore language according to locale of phone.
This question is related to
android
localization
Locale locale = new Locale(langCode);
Locale.setDefault(locale);
Configuration configuration = context.getResources().getConfiguration();
configuration.locale = locale;
preferences.setLocalePref(langCode);
context.getResources().updateConfiguration(configuration, context.getResources().getDisplayMetrics());
Here, langCode is the required language code. You can save the language code as string in sharedPreferences. and you can call this code super.onCreate(savedInstanceState)
in onCreate
.
Those who getting the version issue try this code ..
public static void switchLocal(Context context, String lcode, Activity activity) {
if (lcode.equalsIgnoreCase(""))
return;
Resources resources = context.getResources();
Locale locale = new Locale(lcode);
Locale.setDefault(locale);
android.content.res.Configuration config = new
android.content.res.Configuration();
config.locale = locale;
resources.updateConfiguration(config, resources.getDisplayMetrics());
//restart base activity
activity.finish();
activity.startActivity(activity.getIntent());
}
You should either remove android:configChanges="locale"
from manifest, which will cause activity to reload, or override onConfigurationChanged
method:
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
// your code here, you can use newConfig.locale if you need to check the language
// or just re-set all the labels to desired string resource
}
Kotlin solution using context extension
fun Context.applyNewLocale(locale: Locale): Context {
val config = this.resources.configuration
val sysLocale = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
config.locales.get(0)
} else {
//Legacy
config.locale
}
if (sysLocale.language != locale.language) {
Locale.setDefault(locale)
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
config.setLocale(locale)
} else {
//Legacy
config.locale = locale
}
resources.updateConfiguration(config, resources.displayMetrics)
}
return this
}
Usage
override fun attachBaseContext(newBase: Context?) {
super.attachBaseContext(newBase?.applyNewLocale(Locale("es", "MX")))
}
all the above @Uday's code is perfect but only one thing is missing(default config in build.gradle)
public void setLocale(String lang) {
Locale myLocale = new Locale(lang);
Resources res = getResources();
DisplayMetrics dm = res.getDisplayMetrics();
Configuration conf = res.getConfiguration();
conf.locale = myLocale;
res.updateConfiguration(conf, dm);
Intent refresh = new Intent(this, AndroidLocalize.class);
finish();
startActivity(refresh);
}
Mine was not working just because the languages were not mentioned in the config file(build.gradle)
defaultConfig {
resConfigs "en", "hi", "kn"
}
after that, all languages started running
Udhay's sample code works well. Except the question of Sofiane Hassaini and Chirag SolankI, for the re-entrance, it doesn't work. I try to call Udhay's code without restart the activity in onCreate() , before super.onCreate(savedInstanceState);. Then it is OK! Only a little problem, the menu strings still not changed to the set Locale.
public void setLocale(String lang) { //call this in onCreate()
Locale myLocale = new Locale(lang);
Resources res = getResources();
DisplayMetrics dm = res.getDisplayMetrics();
Configuration conf = res.getConfiguration();
conf.locale = myLocale;
res.updateConfiguration(conf, dm);
//Intent refresh = new Intent(this, AndroidLocalize.class);
//startActivity(refresh);
//finish();
}
Good solutions explained pretty well here. But Here is one more.
Create your own CustomContextWrapper
class extending ContextWrapper
and use it to change Locale setting for the complete application.
Here is a GIST with usage.
And then call the CustomContextWrapper
with saved locale identifier e.g. 'hi'
for Hindi language in activity lifecycle method attachBaseContext
. Usage here:
@Override
protected void attachBaseContext(Context newBase) {
// fetch from shared preference also save the same when applying. Default here is en = English
String language = MyPreferenceUtil.getInstance().getString("saved_locale", "en");
super.attachBaseContext(MyContextWrapper.wrap(newBase, language));
}
Source: Stackoverflow.com