@SuppressLint("ShowToast")
class TheTask extends AsyncTask<String,Void,Void>
{

    JSONArray jsonobject;
    private MainActivity a;
    ProgressDialog pDialog;
    AppPreferences appPrefs;

    public TheTask(MainActivity a){
        this.a = a;
        pDialog = new ProgressDialog(a);
        appPrefs = new AppPreferences(a.getApplicationContext());
    }

    protected void onPreExecute()
    {
        super.onPreExecute();
        pDialog.setMessage("Conectando...");
        pDialog.setCancelable(false);
        pDialog.show();
    }

    protected Void doInBackground(String ...params)
    {
        jsonobject = JSONfunctions.getJSONfromURL(params[0]);
        return null;
    }

    @SuppressLint({ "CommitPrefEdits", "ShowToast" })
    protected void onPostExecute(Void result)
    {
        super.onPostExecute(result);
        pDialog.setMessage("Descifrando...");
        JSONArray excellent = this.getBack();
        if(excellent != null){
            JSONObject rec = null;
            int id = 0;
            String WebCode = "";
            String IntCode = "";
            try{
                rec = excellent.getJSONObject(0);
                id = rec.getInt("Valid");
                WebCode = rec.getString("WebCode");
                IntCode = rec.getString("InternalCode");
            }catch(Exception e){
                //
            }

            String IIntCode = appPrefs.getInternalCode();
            String IWebCode = appPrefs.getExternalCode();
            boolean IValidity = appPrefs.getValidity();

            if(IIntCode.equals(IntCode) && IWebCode.equals(WebCode) && !IValidity){
                //editor.putBoolean(MainActivity.VALIDITY, true);
                //editor.commit();
                appPrefs.setValidity(true);
                Toast.makeText(a, "Registrado!", 2000).show();
            }else if(!IIntCode.equals(IntCode) && (WebCode.equals("") || WebCode.equals(IWebCode))){
                //editor.putString(MainActivity.EXTERNAL_CODE, "Invalid");
                //editor.commit();
                appPrefs.setExternalCode("Invalid");
                Toast.makeText(a, "Codigo invalido", 2000).show();
            }
        }else{
            Toast.makeText(a, "Codigo invalido", 2000).show();
        }
        pDialog.dismiss();
        a.uCodes();
        a.checkForNext();
    }

    public JSONArray getBack(){
        return jsonobject;
    }

}

public void showAlert(){
        final MainActivity a = this;

        AlertDialog.Builder alert = new AlertDialog.Builder(this);

        alert.setTitle("Activación");
        alert.setMessage("Introduzca codigo de activación: ");

        final EditText input = new EditText(this);
        alert.setView(input);

        alert.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int whichButton){
                //editor.putString(EXTERNAL_CODE, input.getText().toString());
                //editor.commit();
                appPrefs.setExternalCode(input.getText().toString());
                uCodes();
                String webpage = "http://www.mobileservices.es/app/confirmcode.php?wc=" +  extCode + "&ic=" + intCode;
                TheTask task = new TheTask(a);
                task.execute(webpage);;
            }
        });

        alert.show();
    }