Change language without restarting activity

Question

I have a method that translates my application from English to Swedish and back again if the user so wishes. However, I don't really like the fact that the activity restarts every time because it's giving me a hard time with the savedInstaceState and I've had several crashes because of this.

Here's how my method that changes language looks:

public void setApplicationLanguage(String language) {
    myLocale = new Locale(language);
    Resources res = activity.getResources();
    DisplayMetrics display = res.getDisplayMetrics();
    Configuration configuration = res.getConfiguration();
    configuration.locale = myLocale;
    res.updateConfiguration(configuration, display);
    Intent refresh = new Intent(activity, StartupActivity.class);
    activity.startActivity(refresh);
} 

Is there any chance that the same function can be applied without the:

Intent refresh = new Intent(activity, StartupActivity.class);
activity.startActivity(refresh);

?

Answer 1

Try this

• I also had this issue.I used the code below and then it changed the language without refreshing the activity

---

public void setLocale(String lang) {

myLocale = new Locale(lang);
Resources res = getResources();
DisplayMetrics dm = res.getDisplayMetrics();
Configuration conf = res.getConfiguration();
conf.locale = myLocale;
res.updateConfiguration(conf, dm);
onConfigurationChanged(conf);
/*Intent refresh = new Intent(this, AndroidLocalize.class);
startActivity(refresh);*/
  }

@Override
public void onConfigurationChanged(Configuration newConfig) {
  // refresh your views here
    lblLang.setText(R.string.langselection);
  super.onConfigurationChanged(newConfig);
// Checks the active language
if (newConfig.locale == Locale.ENGLISH) {
    Toast.makeText(this, "English", Toast.LENGTH_SHORT).show();
} else if (newConfig.locale == Locale.FRENCH){
    Toast.makeText(this, "French", Toast.LENGTH_SHORT).show();
}
  }

---

• declare in Manifest android:configChanges="locale"

Answer 2

You can replace the code:

Intent refresh = new Intent(activity, StartupActivity.class);
activity.startActivity(refresh);

With the method from Activity class:

recreate();

I hope your minimum SDK version will support because it was introduce in SDK 11. Your activity will be recreate as a new instance remember! Everything will be started afresh. From my experience it is fast compared to making a new Intent. But if you want to pass some data the method of using Intent is better than that! You can add extras to the Intent.