Gson Json to Arraylist

• Copy below mentioned code and paste in GSONUTILS file
  

  public static <T> ArrayList<T> fromJsontoArrayList(
  String string, Class<T> model)
  {
  
   Gson gson = new GsonBuilder().create();
   T gfromat = null;
   ArrayList<T> localArrayList = new ArrayList<T>();
   try
   {
  
   JSONArray jsonInner = new JSONArray(string);
   int i = 0;
   while (i < jsonInner.length())
   {
   gfromat = gson.fromJson(jsonInner.get(i).toString(), model);
   localArrayList.add(gfromat);
   i++;
  
   }
  
   }
   catch (Exception e)
   {
    Log.e("GsonUtils","Amit exception["+e.getMessage()+"]");
   }
  
   return localArrayList;
  }
  
  

• call this method like this fromJsontoArrayList("jsonstring",beanclass.class)

[KEY : convert file size, readable file size, convert in]

Convert file size to readable format

1. Copy below method
   

   public static String convertSize(long size)
   {
   
   String sizeIn[] = new String[] { "KB", "MB", "GB", "TB" };
   String ret = "";
   if (size >= 1024)
   {
    int devider = 1024;
    int counter = 0;
    while (size / devider > 1024)
    {
     counter++;
     devider *= 1024;
     
    }
    ret = String.format("%.2f", (double) size / devider) + " " + sizeIn[counter];
    
    return ret;
   } else
   {
    ret = size + " bytes";
   }
   return ret;
   }
   

2. Get file length and call above method

   convertSize(new File("file.txt").length())