Merge branch '22-fix-get-word-after-length-change' into 'master'

Resolve "Fix get word after length change"

Closes #22

See merge request !14

android/gradle.properties

 org.gradle.jvmargs=-Xmx1536M
 android.useAndroidX=true
 android.enableJetifier=true
-app.versionName=0.0.9
-app.versionCode=9
+app.versionName=0.0.10
+app.versionCode=10

lib/utils/random_pick_word.dart

@@ -7,6 +7,8 @@ import 'package:flutter/services.dart';
 class RandomPickWord {
   static Set<String> wordList = <String>{};
   static Set<String> dictionary = <String>{};
+
+  static String _lang = '';
   static int _length = 5;
   static String _level = '';
 
@@ -16,22 +18,18 @@ class RandomPickWord {
   String get word => _word;
 
   init(String lang, int length, String level) async {
+    if (lang != _lang || length != _length || level != _level || wordList.isEmpty || dictionary.isEmpty) {
+      _lang = lang;
       _length = length;
       _level = level;
-    _word = '';
-    await wordFromLocalFile(lang, length, level);
-  }
 
-  Future<void> wordFromLocalFile(String lang, int length, String level) async {
-    if (length != _length || level != _level || wordList.isEmpty || dictionary.isEmpty) {
-      _length = length;
-      _level = level;
+      dictionary.clear();
       wordList.clear();
 
       String wordBaseFilename = 'words-' + length.toString() + '-' + lang;
 
       // Get full dictionary (eligible words)
-      print('Reload dictionary');
+      print('Reload dictionary / ' + lang + ' / ' + length.toString());
       try {
         String wordsFile = wordBaseFilename + '-' + 'dictionary';
         var data = await rootBundle.loadString('assets/files/' + wordsFile + '.txt');
@@ -45,7 +43,7 @@ class RandomPickWord {
       }
 
       // Get guessable words list (will pick random word from)
-      print('Reload words list (' + level + ')');
+      print('Reload words list  / ' + lang + ' / ' + length.toString() + ' / ' + level);
       try {
         String wordsFile = wordBaseFilename + '-' + level;
         var data = await rootBundle.loadString('assets/files/' + wordsFile + '.txt');
@@ -57,12 +55,16 @@ class RandomPickWord {
       } catch (e) {
         throw "Failed loading words database";
       }
-
     }
 
     print('Words in dictionary: ' + dictionary.length.toString());
     print('Words in words list: ' + wordList.length.toString());
 
+    _word = '';
+    await wordFromLocalFile();
+  }
+
+  Future<void> wordFromLocalFile() async {
     // Check we have enough words
     if (wordList.length < 1) {
       print('Not enough words in list.');