Question

I was currently working on my android project when I came across this issue

I want this to convert a String like “0345303709”7 into an integer, but I keep getting a NumberFormatException.

I’ve searched all the questions here, but have not found a solution to my problem.

Below is my Android code:

 String edit_cell=cellnumber.getText().toString();
        try
        {
            if(cellnumber.getText().length()==11 && TextUtils.isEmpty(edit_cell)!=true && edit_cell!=null)
            {

                cell=Integer.valueOf("03462651882");
            }
            else
            {                   
                Toast.makeText(this, "Invalid CellNumber\n Write CellNumber like this Format:\nNetworkCode Followed by your Number\n",Toast.LENGTH_LONG).show();
                Toast.makeText(this, "eg:03213213214",Toast.LENGTH_LONG).show();    
            }
        }

        catch(Exception ex)
        {
            Toast.makeText(this, "Invalid cellnumber\n Write cellNumber line this format:\n Network code followed by your number\n",Toast.LENGTH_LONG).show();
            Toast.makeText(this, "eg:03213213214",Toast.LENGTH_LONG).show();    
        }      

I am using eclipse Helios IDE and android version is 2.2 api 8

Answer 1

It’s too big for an Integer, you need a Long.

Edit

Didn’t notice that it was a phone number – definitely store it as a String.

As for validation, a lot of people have dealt with that problem before. See here, for example: A comprehensive regex for phone number validation