Android problem with ArrayList of String

I was trying to read a text file to an ArrayList of String. The code is like this:

public class SymptomCategory {

 private ArrayList<String> mCategory;

 public SymptomCategory (InputStream is) {

 

  String str="";

  StringBuffer buf = new StringBuffer();   

  BufferedReader reader = new BufferedReader(new InputStreamReader(is));

  if (is!=null) {       

   try {

    while ((str = reader.readLine()) != null) { 

     System.out.println(str);

     mCategory.add(new String(str));

     buf.append(str + "\n" );

    }

   } catch (IOException e) {

    // TODO Auto-generated catch block

    e.printStackTrace();

   }    

  }  

 }

 public ArrayList<String> getCategory() {

  return mCategory;

 }




}

The problem was that I can only read the first line of the file.

I fixed the problem by adding the following at the beginning of the constructor:

  mCategory = new ArrayList<String>();