Localization not working after app restart

Question

I'm including localization to translate my app intro three different languages , after setting up the translated strings of each laguages , i go to preference settings and i check a checkbox and and the translation works fine , the problem is that when i restart the app , localization even though i have saved the chosen language in sharedpreference and retreiving it in mainactivity

*This is how i m setting the languages

var sharedPreferences = requireContext().getSharedPreferences("prefs", 
           Context.MODE_PRIVATE)
 var editor = sharedPreferences.edit()

 spanishCheckBox.setOnPreferenceChangeListener(object : Preference.OnPreferenceChangeListener{
                override fun onPreferenceChange(preference: Preference?, newValue: Any?): Boolean {
                    var isSpanishChecked = newValue as Boolean
                    if(isSpanishChecked){
                        var Lang = "es"
                        editor.putString("key",Lang)
                        editor.apply()
                        var local = Locale(Lang)
                        var configuration = Configuration()
                        configuration.locale = local
                        resources.updateConfiguration(configuration,resources.displayMetrics)

                        englishCheckBox.isChecked = false
                        frenchCheckBox.isChecked = false

                        Intent(requireContext(),MainActivity::class.java).also {
                            it.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK)
                            startActivity(it)
                        }
                    }
                    return true
                }
            })

This is how i m retreiving data in mainactivity


 fun LoadLanguageConfiguration(){
        var sharedpreferences = getSharedPreferences("prefs", Context.MODE_PRIVATE)
        var langCode = sharedpreferences.getString("key","")
        var local = Locale(langCode)
        var configuration = Configuration()
        configuration.locale = local
        baseContext.createConfigurationContext(configuration)
    }

The translation only works when i set the language in the app , but when i restart the app , it goes back to default language which is english , any help would be appreciated , thank you

Did you mean that sharedpreference is deleting the value of "key" when the app restarting? or the value still same as before restarting but the language not changing. — Nanda R.M
upon checking using the debugger , the value is retreived normally but it is not being applied to localization , even when i set the value manually , the app language is not changed — Taki
Where do you call LoadLanguageConfiguration(), you should call it very early stage of your app startup. — Sinan Ceylan
I'm calling in in the oncreate , so as soon as the app lauches , it should check that method — Taki
Would you try to call LoadLanguageConfiguration() at onStart function ?. As the android lifecycle onStart called after onRestart and after oncreate. — Nanda R.M

Taki Taki · Accepted Answer · 2020-07-03T08:28:34

The problem is that i was not starting my language loading method at the start and before everything , so i put it as first method in my oncreate and everything works as supposed to , hope this helps someone else

Localization not working after app restart

1 Answers