update currency management

app/src/main/java/net/pokeranalytics/android/ui/fragment/CurrenciesFragment.kt

@@ -19,8 +19,8 @@ import net.pokeranalytics.android.ui.fragment.components.PokerAnalyticsFragment
 import net.pokeranalytics.android.ui.view.RowRepresentable
 import net.pokeranalytics.android.ui.view.RowViewType
 import net.pokeranalytics.android.ui.view.rowrepresentable.HeaderRowRepresentable
+import net.pokeranalytics.android.util.Preferences
 import java.util.*
-import java.util.prefs.Preferences
 
 class CurrenciesFragment : PokerAnalyticsFragment(), StaticRowRepresentableDataSource, RowRepresentableDelegate {
 
@@ -85,6 +85,7 @@ class CurrenciesFragment : PokerAnalyticsFragment(), StaticRowRepresentableDataS
 
     // RowRepresentableDelegate
     override fun onRowSelected(position: Int, row: RowRepresentable, fromAction: Boolean) {
+        Preferences.setCurrencyCode((row as CurrencyRow).currency.currencyCode, this.context!!)
     }
 
     private fun initData() {
@@ -98,7 +99,7 @@ class CurrenciesFragment : PokerAnalyticsFragment(), StaticRowRepresentableDataS
         val activity = activity as PokerAnalyticsActivity
 
         // Avoid a bug during setting the title
-        toolbar.title = activity.baseContext.getString( R.string.currency)
+        toolbar.title = this.getString( R.string.currency)
 
         activity.setSupportActionBar(toolbar)
         activity.supportActionBar?.setDisplayHomeAsUpEnabled(true)

app/src/main/java/net/pokeranalytics/android/util/FormatUtils.kt

@@ -2,13 +2,14 @@ package net.pokeranalytics.android.util
 
 import android.content.Context
 import java.text.NumberFormat
+import java.util.*
 
 class FormatUtils {
 
     companion object {
 
         fun getCurrencyFormatter(context: Context) : NumberFormat {
-            var formatter = NumberFormat.getCurrencyInstance(Preferences.getCurrencyLocale(context))
+            val formatter = NumberFormat.getCurrencyInstance(Preferences.getCurrencyLocale(context))
             formatter.minimumFractionDigits = 0
             formatter.maximumFractionDigits = 2
             return formatter

app/src/main/java/net/pokeranalytics/android/util/Preferences.kt

@@ -7,47 +7,55 @@ import java.util.*
 class Preferences {
 
     enum class Keys(var identifier: String) {
-        CURRENCY_LANGUAGE("CurrencyLanguage")
+        CURRENCY_CODE("CurrencyCode")
     }
 
     companion object {
 
+        var currencyLocale : Locale? = null
+
         fun setString(key: Keys, value: String, context: Context) {
-            var preferences = PreferenceManager.getDefaultSharedPreferences(context)
-            var editor = preferences.edit()
+            val preferences = PreferenceManager.getDefaultSharedPreferences(context)
+            val editor = preferences.edit()
             editor.putString(key.identifier, value)
             editor.commit()
         }
 
         fun getString(key: Keys, context: Context) : String? {
-            var preferences = PreferenceManager.getDefaultSharedPreferences(context)
+            val preferences = PreferenceManager.getDefaultSharedPreferences(context)
             return preferences.getString(key.identifier, null)
         }
 
-        fun setCurrencyLanguage(language: String, context: Context) {
-            Preferences.setString(Keys.CURRENCY_LANGUAGE, language, context)
+        fun setCurrencyCode(currencyCode: String, context: Context) {
+            Preferences.setString(Keys.CURRENCY_CODE, currencyCode, context)
+            currencyLocale = null
         }
 
-        fun getCurrencyLocale(context : Context) : Locale {
+        private fun getCurrencyCode(context: Context) : String? {
+            return Preferences.getString(Keys.CURRENCY_CODE, context)
+        }
 
-            /*
+        fun getCurrencyLocale(context : Context) : Locale {
 
-                java.util.Currency usd = java.util.Currency.getInstance("USD");
-    java.text.NumberFormat format = java.text.NumberFormat.getCurrencyInstance(
-          java.util.Locale.JAPAN);
-    format.setCurrency(usd);
-    System.out.println(format.format(23.23));
-    format.setMaximumFractionDigits(usd.getDefaultFractionDigits());
-    System.out.println(format.format(23.23));
+            currencyLocale?. let {
+                return it
+            }
 
-             */
-            val currencyLanguage = Preferences.getString(Keys.CURRENCY_LANGUAGE, context)
-            if (currencyLanguage != null) {
-                return Locale(currencyLanguage)
+            Preferences.getCurrencyCode(context)?.let { currencyCode ->
+                Locale.getAvailableLocales().filter{
+                    try {
+                        Currency.getInstance(it).currencyCode == currencyCode
+                    } catch (e: Exception) {
+                        false
+                    }
+                }.first().let {
+                    currencyLocale = it
+                    return it
+                }
             }
-            return Locale.getDefault()
+            currencyLocale = Locale.getDefault()
+            return currencyLocale!!
         }
-
     }
 
 }