c# - Unity game on iOS ArgumentOutOfRangeException in dictionary -


i have achievement module saving , loading dictionary name of achievement (key) , if it's been accomplished (bool value). i'm using gde (game data editor) plugin (this one).

my module works fine in unity editor, saving , loading everything. in ios crashes argument out of range exception. save , load methods:

    public void load(){      gdeachievementsdata achievements;      if (!gdedatamanager.datadictionary.trygetcustom(gdeitemkeys.achievements_achievements, out achievements)){         debug.logerror("error reading save data!");     }      loadachievementsindictionary(achievements);      debug.log("achievement loaded data"); }  public void save(){      gdeachievementsdata achievements;      if (!gdedatamanager.datadictionary.trygetcustom(gdeitemkeys.achievements_achievements, out achievements)){         debug.logerror("error reading save data!");     }      savedictionaryinachievements(achievementscript.achievements, achievements);      achievements.set_achievements();      debug.log("achievements saved data");  }  void loadachievementsindictionary(gdeachievementsdata gdedata){      debug.log("achievements: "+gdedata.achievements);      if(achievements==null){         achievements = new achievementlist();     }      foreach(list<string> achievement in gdedata.achievements){         if(achievements.list.containskey(achievement[0]))         {             achievements.list[achievement[0]] = (achievement[1]=="true")||(achievement[1]=="true");         }else{             achievements.list.add(achievement[0], achievement[1]=="true"||achievement[1]=="true");         }     }  }  void savedictionaryinachievements(achievementlist list, gdeachievementsdata gdedata){     for(int = 0; < gdedata.achievements.count; i++){         list<string> item = gdedata.achievements[i];         string achievementname = item[0];         item[1] = list.list[achievementname].tostring();     }  }

and errors generated in xcode debugger, saving:

argumentoutofrangeexception: argument out of range. parameter name: index @ system.collections.generic.list`1[system.string].get_item (int32 index) [0x00000] in :0 @ achievementscript.savedictionaryinachievements (.achievementlist list, gamedataeditor.gdeachievementsdata gdedata) [0x00000] in :0 @ achievementscript.save () [0x00000] in :0 @ achievementscript.onapplicationfocus (boolean focusstatus) [0x00000] in :0 @ achievementscript.onapplicationpause (boolean pausestate) [0x00000] in :0

and loading:

argumentoutofrangeexception: argument out of range. parameter name: index @ system.collections.generic.list`1[system.string].get_item (int32 index) [0x00000] in :0 @ achievementscript.loadachievementsindictionary (gamedataeditor.gdeachievementsdata gdedata) [0x00000] in :0 @ achievementscript.load () [0x00000] in :0 @ achievementscript.onapplicationfocus (boolean focusstatus) [0x00000] in :0

asking same question gde team, if has idea why happening, it'd great have enlightenment.

multiple time access achievement[0] , achievement[1], without checking size of achievement first - can result in out of index exception because there aren't enough elements in achievement. note accessing [0] can cause error if said list<> empty.

to solve this, make sure check list size. can done via linq

foreach(list<string> achievement in gdedata.achievements.where(l => l.count >= 2)

or via if statement

foreach(list<string> achievement in gdedata.achievements) {     if(achievment < 2) continue;     // put rest of foreach logic here. }

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