open Url Connection - Android Network

Android examples for Network:URL

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  2. Android
  3. Network
  4. URL

Description

open Url Connection

Demo Code


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

public class Main {
    private static final String LOG_TAG = "HttpUtils Connect Tag";

    public static String openUrl(String url, String method, Bundle params,
            String enc) {/* www .j a  v a2s  .  co m*/

        String response = null;

        if (method.equals("GET")) {
            url = url + "?" + encodeUrl(params);
        }

        try {
            Log.d(LOG_TAG, "Url:" + url);
            HttpURLConnection conn = (HttpURLConnection) new URL(url)
                    .openConnection();
            conn.setRequestProperty("User-Agent", System.getProperties()
                    .getProperty("http.agent"));
            conn.setReadTimeout(10000);
            if (method.equals("POST")) {
                conn.setRequestMethod("POST");
                conn.setDoOutput(true);
                conn.getOutputStream().write(
                        encodeUrl(params).getBytes("UTF-8"));
            }
            response = read(conn.getInputStream(), enc);
        } catch (Exception e) {
            Log.e(LOG_TAG, e.getMessage());
            throw new RuntimeException(e.getMessage(), e);
        }
        return response;
    }

    public static String encodeUrl(Bundle parameters) {
        if (parameters == null)
            return "";
        StringBuilder sb = new StringBuilder();
        boolean first = true;
        for (String key : parameters.keySet()) {
            if (first)
                first = false;
            else
                sb.append("&");
            sb.append(key + "=" + parameters.getString(key));
        }
        return sb.toString();
    }

    private static String read(InputStream in, String enc)
            throws IOException {
        StringBuilder sb = new StringBuilder();
        InputStreamReader isr = null;
        BufferedReader r = null;
        if (enc != null) {

            r = new BufferedReader(new InputStreamReader(in, enc), 1000);
        } else {

            r = new BufferedReader(new InputStreamReader(in), 1000);
        }

        for (String line = r.readLine(); line != null; line = r.readLine()) {
            sb.append(line);
        }
        in.close();
        return sb.toString();
    }
}

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