Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;

import android.util.Log;

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;

import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

import java.util.HashMap;

public class Main {
    private static final String TAG = "NWhelper";

    /**
     * Downloads a file via HTTP(S) GET to the given path. This function cannot be called from the
     * UI thread. Android does not allow it.
     * @param urlString Url to the ressource to download.
     * @param path path where the file should be saved.
     * @param overwrite if file exists, overwrite?
     * @return flase if download was not successful. If successful, true.
     */
    private static Boolean fileDownloadHttp(String urlString, String path, Boolean overwrite) {
        return fileDownloadHttp(urlString, new File(path), overwrite);
    }

    /**
     * Downloads a file via HTTP(S) GET to the given path. This function cannot be called from the
     * UI thread. Android does not allow it.
     *
     * @param urlString Url to the ressource to download.
     * @param file      file to be written to.
     * @param overwrite if file exists, overwrite?
     * @return flase if download was not successful. If successful, true.
     */
    private static Boolean fileDownloadHttp(String urlString, File file, Boolean overwrite) {
        HashMap<String, String> result = null;
        URL url = null;
        //        File temp;

        try {
            url = new URL(urlString);

            HttpURLConnection urlConnection = (HttpURLConnection) url.openConnection();
            urlConnection.setRequestMethod("GET");
            urlConnection.setReadTimeout(200000);
            urlConnection.connect();
            InputStream in = new BufferedInputStream(urlConnection.getInputStream());

            FileOutputStream outputStream = new FileOutputStream(file);

            int read = 0;
            byte[] bytes = new byte[1024];

            while ((read = in.read(bytes)) != -1) {
                outputStream.write(bytes, 0, read);
            }

            in.close();
            outputStream.close();
            urlConnection.disconnect();
        } catch (MalformedURLException e) {
            e.printStackTrace();
            return false;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
        Log.d(TAG, "File download: " + file.getAbsolutePath() + url.getFile() + "overwrite " + overwrite
                + "exists? " + file.exists());
        return true;
    }
}