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detatch android related downloader from crawler

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This commit is contained in:
Christian Schabesberger 2016-01-28 21:21:19 +01:00
parent f152d66cd8
commit 54d318bf04
12 changed files with 243 additions and 165 deletions
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151
app/src/main/java/org/schabi/newpipe/Downloader.java
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@ -1,24 +1,8 @@
package org.schabi.newpipe;
import android.app.NotificationManager;
import android.content.Context;
import android.content.SharedPreferences;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.os.AsyncTask;
import android.preference.PreferenceManager;
import android.support.v4.app.NotificationCompat;
import android.util.Log;
import java.io.BufferedInputStream;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.UnknownHostException;
@ -27,7 +11,7 @@ import javax.net.ssl.HttpsURLConnection;
import info.guardianproject.netcipher.NetCipher;
/**
* Created by Christian Schabesberger on 14.08.15.
* Created by Christian Schabesberger on 28.01.16.
*
* Copyright (C) Christian Schabesberger 2015 <chris.schabesberger@mailbox.org>
* Downloader.java is part of NewPipe.
@ -46,38 +30,16 @@ import info.guardianproject.netcipher.NetCipher;
* along with NewPipe. If not, see <http://www.gnu.org/licenses/>.
*/
public class Downloader extends AsyncTask<Void, Integer, Void> {
public static final String TAG = "Downloader";
public class Downloader implements org.schabi.newpipe.services.Downloader {
private static final String USER_AGENT = "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0";
private NotificationManager nm;
private NotificationCompat.Builder builder;
private int notifyId = 0x1234;
private int fileSize = 0xffffffff;
private final Context context;
private final String fileURL;
private final File saveFilePath;
private final String title;
private final String debugContext;
public Downloader(Context context, String fileURL, File saveFilePath, String title) {
this.context = context;
this.fileURL = fileURL;
this.saveFilePath = saveFilePath;
this.title = title;
this.debugContext = "'" + fileURL +
"' => '" + saveFilePath + "'";
}
/**Download the text file at the supplied URL as in download(String),
* but set the HTTP header field "Accept-Language" to the supplied string.
* @param siteUrl the URL of the text file to return the contents of
* @param language the language (usually a 2-character code) to set as the preferred language
* @return the contents of the specified text file*/
public static String download(String siteUrl, String language) {
public String download(String siteUrl, String language) {
String ret = "";
try {
URL url = new URL(siteUrl);
@ -118,11 +80,11 @@ public class Downloader extends AsyncTask<Void, Integer, Void> {
return response.toString();
}
/**Download (via HTTP) the text file located at the supplied URL, and return its contents.
* Primarily intended for downloading web pages.
* @param siteUrl the URL of the text file to download
* @return the contents of the specified text file*/
public static String download(String siteUrl) {
/**Download (via HTTP) the text file located at the supplied URL, and return its contents.
* Primarily intended for downloading web pages.
* @param siteUrl the URL of the text file to download
* @return the contents of the specified text file*/
public String download(String siteUrl) {
String ret = "";
try {
@ -137,99 +99,4 @@ public class Downloader extends AsyncTask<Void, Integer, Void> {
return ret;
}
/**
* Downloads a file from a URL in the background using an {@link AsyncTask}.
*
* @param fileURL HTTP URL of the file to be downloaded
* @param saveFilePath path of the directory to save the file
* @param title
* @throws IOException
*/
public static void downloadFile(final Context context, final String fileURL, final File saveFilePath, String title) {
new Downloader(context, fileURL, saveFilePath, title).execute();
}
/** AsyncTask impl: executed in gui thread */
@Override
protected void onPreExecute() {
super.onPreExecute();
nm = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Drawable icon = context.getResources().getDrawable(R.mipmap.ic_launcher);
builder = new NotificationCompat.Builder(context)
.setSmallIcon(android.R.drawable.stat_sys_download)
.setLargeIcon(((BitmapDrawable) icon).getBitmap())
.setContentTitle(saveFilePath.getName())
.setContentText(saveFilePath.getAbsolutePath())
.setProgress(fileSize, 0, false);
nm.notify(notifyId, builder.build());
}
/** AsyncTask impl: executed in background thread does the download */
@Override
protected Void doInBackground(Void... voids) {
HttpsURLConnection con = null;
InputStream inputStream = null;
FileOutputStream outputStream = null;
try {
con = NetCipher.getHttpsURLConnection(fileURL);
int responseCode = con.getResponseCode();
// always check HTTP response code first
if (responseCode == HttpURLConnection.HTTP_OK) {
fileSize = con.getContentLength();
inputStream = new BufferedInputStream(con.getInputStream());
outputStream = new FileOutputStream(saveFilePath);
int bufferSize = 8192;
int downloaded = 0;
int bytesRead = -1;
byte[] buffer = new byte[bufferSize];
while ((bytesRead = inputStream.read(buffer)) != -1) {
outputStream.write(buffer, 0, bytesRead);
downloaded += bytesRead;
if (downloaded % 50000 < bufferSize) {
publishProgress(downloaded);
}
}
publishProgress(bufferSize);
} else {
Log.i(TAG, "No file to download. Server replied HTTP code: " + responseCode);
}
} catch (IOException e) {
Log.e(TAG, "No file to download. Server replied HTTP code: ", e);
e.printStackTrace();
} finally {
try {
if (outputStream != null) {
outputStream.close();
}
if (inputStream != null) {
inputStream.close();
}
} catch (IOException e) {
e.printStackTrace();
}
if (con != null) {
con.disconnect();
}
}
return null;
}
@Override
protected void onProgressUpdate(Integer... progress) {
builder.setProgress(fileSize, progress[0], false);
nm.notify(notifyId, builder.build());
}
@Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
nm.cancel(notifyId);
}
}