A method to download json data from url - Android Network

Android examples for Network:URL

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Description

A method to download json data from url

Demo Code


//package com.java2s;
import android.util.Log;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class Main {
    private static final String LOG_TAG = "DownloadHelper";

    /** A method to download json data from url */
    public static String downloadUrl(String strUrl) throws IOException {
        Log.v(LOG_TAG, "Downloading url: " + strUrl);
        String data = "";
        InputStream iStream = null;
        HttpURLConnection urlConnection = null;
        try {/*from ww  w. ja  v a  2s .com*/
            URL url = new URL(strUrl);

            // Creating an http connection to communicate with url
            urlConnection = (HttpURLConnection) url.openConnection();

            // Connecting to url
            urlConnection.connect();

            // Reading data from url
            iStream = urlConnection.getInputStream();

            BufferedReader br = new BufferedReader(new InputStreamReader(
                    iStream));

            StringBuffer sb = new StringBuffer();

            String line = "";
            while ((line = br.readLine()) != null) {
                sb.append(line);
            }

            data = sb.toString();

            br.close();

        } catch (Exception e) {
            Log.d("Exception while downloading url: " + strUrl,
                    e.toString());
        } finally {
            iStream.close();
            urlConnection.disconnect();
        }
        return data;
    }
}

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