com.example.hnreader.Download.java Source code

Introduction

Here is the source code for com.example.hnreader.Download.java

Source

/*
 * HNReader for Android, with preloading.
 * You can preload the content of HN Links and read the articles + comments when you're offline.
 * @author Vadim Kr.
 * @copyright (c) 2013 bndr
 * @license http://creativecommons.org/licenses/by-sa/3.0/legalcode
 */
package com.example.hnreader;

import android.app.ProgressDialog;
import android.content.Context;
import android.os.AsyncTask;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.params.BasicHttpParams;
import org.apache.http.params.HttpConnectionParams;
import org.apache.http.params.HttpParams;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;

/**
 * An Async thread for downloading the content
 */
public class Download extends AsyncTask<String, Void, String> {

    protected Context context;
    private ProgressDialog Dialog;

    /**
     * Constructor
     * @param context
     */
    public Download(Context context) {
        this.context = context;

    }

    @Override
    protected String doInBackground(String... url) {
        String s = getPage(url[0]);
        return s;
    }

    @Override
    protected void onPostExecute(String result) {

    }

    @Override
    protected void onPreExecute() {

    }

    /**
     * Make Http request to the url and return webpage as string;
     *
     * @param url
     * @return
     */
    private String getPage(String url) {

        HttpParams httpParameters = new BasicHttpParams();
        int timeoutSocket = 5000;
        HttpConnectionParams.setSoTimeout(httpParameters, timeoutSocket);
        HttpConnectionParams.setConnectionTimeout(httpParameters, timeoutSocket);
        HttpConnectionParams.setTcpNoDelay(httpParameters, true);
        HttpResponse response;

        StringBuilder str = new StringBuilder();
        HttpClient client = new DefaultHttpClient(httpParameters);
        HttpGet request = new HttpGet(url);

        try {
            response = client.execute(request);
            InputStream in = response.getEntity().getContent();

            BufferedReader reader = new BufferedReader(new InputStreamReader(in));

            String line;
            while ((line = reader.readLine()) != null) {
                str.append(line);
            }
            in.close();
        } catch (Exception e) {
            return "";
        }

        return str.toString();
    }

}