Add value to arrayList in android

Question

I'm trying to add int values to array list

ArrayList<Integer> arraylistPage1;

for(int j=1;j<=totalPage;j++){  
     int x=0;
     for(int i=1;i<=rangeMode;i++){
          if(binaryTable[i][j]==1){
             cardInPage[j][x]=i;
             System.out.println("card number: "+i);
             arraylistPage1.add(i);
             System.out.println(arraylistPage1);
             x++;                   
          }
     }
     System.out.println("page-"+j+" total card:"+x);
     totalCardInPage[j]=x;
}

But when I run it, the program just stops.

Does anyone know how to fix this?

Thanks

I recommend you step through it with a debugger to find out what's actually happening while it's "stopped". — Dawood ibn Kareem
– Dawood ibn Kareem, Commented Apr 22, 2014 at 8:16

Sunny Garg · Accepted Answer · 2014-04-22 08:19:04Z

1

Change the code to this,

ArrayList<Integer> arraylistPage1;

for(int j=1;j<=totalPage;j++){  
 int x=0;
 arraylistPage1 = new ArrayList<Integer>(rangeMode);
 for(int i=1;i<=rangeMode;i++){
      if(binaryTable[i][j]==1){
         cardInPage[j][x]=i;
         System.out.println("card number: "+i);
         arraylistPage1.add(i);
         System.out.println(arraylistPage1);
         x++;                   
      }
 }
 System.out.println("page-"+j+" total card:"+x);
 totalCardInPage[j]=x;
}

answered Apr 22, 2014 at 8:19

Sunny Garg

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