안드로이드 - AsyncTask에서 String... 의미

https://stackoverflow.com/questions/17382587/what-does-string-params-mean-if-passed-as-a-parameter

에 번역 글입니다.

Q : doInBackground 메소드에서 String… params의 의미가 어떤 뜻인가요?

public class AsyncHttpPost extends AsyncTask<String, String, String> {

    private HashMap<String, String> mData = null;// post data

    /**

     * constructor

     */

    public AsyncHttpPost(HashMap<String, String> data) {

        mData = data;

    }

    /**

     * background

     */

    @Override

    protected String doInBackground(String... params) {

        byte[] result = null;

        String str = "";

        HttpClient client = new DefaultHttpClient();

        HttpPost post = new HttpPost(params[0]);// in this case, params[0] is URL

        try {

            // set up post data

            ArrayList<NameValuePair> nameValuePair = new ArrayList<NameValuePair>();

            Iterator<String> it = mData.keySet().iterator();

            while (it.hasNext()) {

                String key = it.next();

                nameValuePair.add(new BasicNameValuePair(key, mData.get(key)));

            }

            post.setEntity(new UrlEncodedFormEntity(nameValuePair, "UTF-8"));

            HttpResponse response = client.execute(post);

            StatusLine statusLine = response.getStatusLine();

            if(statusLine.getStatusCode() == HttpURLConnection.HTTP_OK){

                result = EntityUtils.toByteArray(response.getEntity());

                str = new String(result, "UTF-8");

            }

        }

        catch (UnsupportedEncodingException e) {

            e.printStackTrace();

        }

        catch (Exception e) {

        }

        return str;

    }

    /**

     * on getting result

     */

    @Override

    protected void onPostExecute(String result) {

        // something...

    }

}

Answer : 

params[0]는 첫번째 스트링

params[1]는 두번째 스트링

params[2]는 세번째 스트링을 의미합니다.

doInBackground(String... params)

// params represents a vararg.

new AsyncHttpPost().execute(s1,s2,s3); // pass strings to doInbackground

params[0] is the first string

params[1]  is the second string

params[2]  is the third string