Question

I have the map declared before onCreate

    public ArrayList<Map<String,String>> c_tmp= new ArrayList<Map<String,String>>();
    public Map<String,String> mapa;

and then in a function that is triggered by textwatcher, I want to fill the map but there seems to be an error

    String numberz = phones1.getString(phones1.getColumnIndex(Phone.NUMBER));
              if(numberz.contains("07"))
  {  name1 = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
                                       if(name1!=null)
                                    {
                                           nnn=name1;//+"\n"+numberz;
                                         mapa.put(numberz,nnn);
                                        c_tmp.add(mapa);
                                    } 
                               }

Answer 1

The line :

mapa.put(numberz,nnn); 

will throw an error. mapa is not instanciated in your code.

replace the second line by :

public Map<String,String> mapa = new Map<String,String>();