Question

我有这段代码，它提供了Exception：

IndexOutOfBound :Invalid Index 0, Size is 0

这是我的代码：

 ArrayList<HashMap<String, String>> vehlist;
 HashMap<String, String> vehmap;

 for(int i = 0;i<BackgroundService.taxis.size();i++){
                vehmap = new HashMap<String, String >();
                vehmap.put("vehno", BackgroundService.taxis.get(i));
                vehmap.put("vehmotion",BackgroundService.taximoving.get(i)+"");
                vehmap.put("vehpanic", BackgroundService.ppanic.get(i)+"");
                vehmap.put("vehpower", BackgroundService.ppower.get(i)+"");
                vehlist.add(vehmap);
            }

这里我添加了数据

     if(activestatus){////////////activation
       String taxinos= tokens.nextToken();
       StringTokenizer tokentaxi = new StringTokenizer(taxinos, ",");
       int taxicount = tokentaxi.countTokens();

     if(taxicount>0){
            taxicount = BackgroundService.taxis.size();///////addded to combat error prone value
            int jj=0;
            for(int i=0;i<taxicount;i++){

             String tax = tokentaxi.nextToken(); 
             StringTokenizer tok = new StringTokenizer(tax, ";");
             int taxidetailcount = tok.countTokens();
             if(taxidetailcount==5){
                 if(tok.hasMoreTokens())
                     BackgroundService.taxis.set(jj,tok.nextToken());//was add without index
                 if(tok.hasMoreTokens())
                     BackgroundService.taxitype.set(jj,tok.nextToken());
                 if(tok.hasMoreTokens())
                     BackgroundService.taximoving.set(jj,Boolean.parseBoolean(tok.nextToken().toLowerCase()));//////////added new
                 if(tok.hasMoreTokens())
                     BackgroundService.ppanic.set(jj,Boolean.parseBoolean(tok.nextToken().toLowerCase()));//////////added new
                 if(tok.hasMoreTokens())
                     BackgroundService.ppower.set(jj,Boolean.parseBoolean(tok.nextToken().toLowerCase()));//////////added new


            }
             else{
                 Log.e("Service", "got taxi less value="+i+" ->"+taxidetailcount);
             }
             Log.w("Service", "got taxi "+i+" ->"+tax);
         }

我有一个后台服务，其中所有这些都已初始化

 static List<String> taxis,taxitype,taxifull;
 static List<Boolean> taximoving,ppanic,ppower;
 //Messenger mclients = null; 
  ArrayList<Messenger> mClients = new ArrayList<Messenger>(); 



    taxis = new ArrayList<String>();
    taxitype = new ArrayList<String>(); 
    taxifull = new ArrayList<String>();
    taximoving = new ArrayList<Boolean>();
    ppanic = new ArrayList<Boolean>();
    ppower = new ArrayList<Boolean>();

Answer 1

你的集合是空的，因为应该填充数据的循环没有运行，那是因为你在这里覆盖了循环计数器

 if(taxicount > 0) { // Say, taxicount is 10
        taxicount = BackgroundService.taxis.size();
        // Now, taxicount is 0
        int jj = 0;
        for(int i=0; i < taxicount; i++) { // data loop won't run now

IndexOutOfBounds：索引0无效，大小为0

1 个答案: