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@heitorpaceli
Created March 2, 2022 03:59
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ActivityPerAppLanguage
package com.paceli.sampleperapplanguage
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.view.View
import android.widget.AdapterView
import android.widget.ArrayAdapter
import android.widget.Spinner
import android.app.LocaleManager
import android.os.Build
import android.os.LocaleList
import androidx.annotation.RequiresApi
import java.util.*
@RequiresApi(Build.VERSION_CODES.TIRAMISU)
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
initLocalePicker()
updateActivityTitle()
}
private fun updateActivityTitle() {
val localeManager = getSystemService(LocaleManager::class.java)
val appLocales = localeManager.applicationLocales
title = if (appLocales.isEmpty) {
getString(R.string.system_locale)
} else {
appLocales.get(0).displayName
}
}
private fun updateAppLocales(vararg locales: Locale) {
val localeManager = getSystemService(LocaleManager::class.java)
localeManager.applicationLocales = LocaleList(*locales)
}
private fun initLocalePicker() {
val systemLocale = getString(R.string.system_locale)
val spinner: Spinner = findViewById(R.id.localePicker)
val locales = listOf(systemLocale, "en-US", "es-ES", "iw-IL", "ja-JP", "uk-UA")
spinner.adapter = ArrayAdapter(this, android.R.layout.simple_list_item_1, locales)
spinner.onItemSelectedListener = object : AdapterView.OnItemSelectedListener {
override fun onItemSelected(parent: AdapterView<*>?, view: View?, position: Int, id: Long) {
val selectedLocale = spinner.adapter.getItem(position) as String
if (selectedLocale != systemLocale) {
updateAppLocales(Locale.forLanguageTag(selectedLocale))
} else {
updateAppLocales()
}
}
override fun onNothingSelected(parent: AdapterView<*>?) {}
}
}
}
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