Implemented OnlineFeedViewActivity
This commit is contained in:
daniel oeh
parent
7fe0e05304
commit
8bab080a5a
|
|
@ -0,0 +1,236 @@
|
|||
package de.danoeh.antennapod.activity;
|
||||
|
||||
import java.io.File;
|
||||
import java.io.IOException;
|
||||
import java.util.Date;
|
||||
|
||||
import javax.xml.parsers.ParserConfigurationException;
|
||||
|
||||
import org.xml.sax.SAXException;
|
||||
|
||||
import android.app.AlertDialog;
|
||||
import android.content.DialogInterface;
|
||||
import android.content.DialogInterface.OnCancelListener;
|
||||
import android.os.Bundle;
|
||||
import android.util.Log;
|
||||
import android.view.Gravity;
|
||||
import android.widget.LinearLayout;
|
||||
import android.widget.ProgressBar;
|
||||
|
||||
import com.actionbarsherlock.app.SherlockFragmentActivity;
|
||||
|
||||
import de.danoeh.antennapod.AppConfig;
|
||||
import de.danoeh.antennapod.R;
|
||||
import de.danoeh.antennapod.asynctask.DownloadStatus;
|
||||
import de.danoeh.antennapod.feed.Feed;
|
||||
import de.danoeh.antennapod.preferences.UserPreferences;
|
||||
import de.danoeh.antennapod.service.download.Downloader;
|
||||
import de.danoeh.antennapod.service.download.DownloaderCallback;
|
||||
import de.danoeh.antennapod.service.download.HttpDownloader;
|
||||
import de.danoeh.antennapod.syndication.handler.FeedHandler;
|
||||
import de.danoeh.antennapod.syndication.handler.UnsupportedFeedtypeException;
|
||||
import de.danoeh.antennapod.util.DownloadError;
|
||||
import de.danoeh.antennapod.util.FileNameGenerator;
|
||||
import de.danoeh.antennapod.util.StorageUtils;
|
||||
import de.danoeh.antennapod.util.URLChecker;
|
||||
|
||||
/**
|
||||
* Downloads a feed from a feed URL and parses it. Subclasses can display the
|
||||
* feed object that was parsed. This activity MUST be started with a given URL
|
||||
* or an Exception will be thrown.
|
||||
*
|
||||
* If the feed cannot be downloaded or parsed, an error dialog will be displayed
|
||||
* and the activity will finish as soon as the error dialog is closed.
|
||||
*/
|
||||
public abstract class OnlineFeedViewActivity extends SherlockFragmentActivity {
|
||||
private static final String TAG = "OnlineFeedViewActivity";
|
||||
private static final String ARG_FEEDURL = "arg.feedurl";
|
||||
|
||||
public static final int RESULT_ERROR = 2;
|
||||
|
||||
private Feed feed;
|
||||
private Downloader downloader;
|
||||
|
||||
@Override
|
||||
protected void onCreate(Bundle arg0) {
|
||||
setTheme(UserPreferences.getTheme());
|
||||
super.onCreate(arg0);
|
||||
StorageUtils.checkStorageAvailability(this);
|
||||
final String feedUrl = getIntent().getStringExtra(ARG_FEEDURL);
|
||||
if (feedUrl == null) {
|
||||
throw new IllegalArgumentException(
|
||||
"Activity must be started with feedurl argument!");
|
||||
}
|
||||
if (AppConfig.DEBUG)
|
||||
Log.d(TAG, "Activity was started with url " + feedUrl);
|
||||
setLoadingLayout();
|
||||
startFeedDownload(feedUrl);
|
||||
}
|
||||
|
||||
@Override
|
||||
protected void onStop() {
|
||||
super.onStop();
|
||||
if (downloader != null && downloader.getStatus().isDone() == false) {
|
||||
downloader.cancel();
|
||||
}
|
||||
}
|
||||
|
||||
private DownloaderCallback downloaderCallback = new DownloaderCallback() {
|
||||
@Override
|
||||
public void onDownloadCompleted(final Downloader downloader) {
|
||||
runOnUiThread(new Runnable() {
|
||||
|
||||
@Override
|
||||
public void run() {
|
||||
DownloadStatus status = downloader.getStatus();
|
||||
if (status != null) {
|
||||
if (!status.isCancelled()) {
|
||||
if (status.isSuccessful()) {
|
||||
parseFeed();
|
||||
} else {
|
||||
String errorMsg = DownloadError.getErrorString(
|
||||
OnlineFeedViewActivity.this,
|
||||
status.getReason());
|
||||
if (errorMsg != null
|
||||
&& status.getReasonDetailed() != null) {
|
||||
errorMsg += " ("
|
||||
+ status.getReasonDetailed() + ")";
|
||||
}
|
||||
showErrorDialog(errorMsg);
|
||||
}
|
||||
}
|
||||
} else {
|
||||
Log.wtf(TAG,
|
||||
"DownloadStatus returned by Downloader was null");
|
||||
finish();
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
}
|
||||
};
|
||||
|
||||
private void startFeedDownload(String url) {
|
||||
if (AppConfig.DEBUG)
|
||||
Log.d(TAG, "Starting feed download");
|
||||
url = URLChecker.prepareURL(url);
|
||||
feed = new Feed(url, new Date());
|
||||
String fileUrl = new File(getExternalCacheDir(),
|
||||
FileNameGenerator.generateFileName(feed.getDownload_url()))
|
||||
.toString();
|
||||
feed.setFile_url(fileUrl);
|
||||
DownloadStatus status = new DownloadStatus(feed, "OnlineFeed");
|
||||
HttpDownloader httpDownloader = new HttpDownloader(downloaderCallback,
|
||||
status);
|
||||
httpDownloader.start();
|
||||
}
|
||||
|
||||
/** Displays a progress indicator. */
|
||||
private void setLoadingLayout() {
|
||||
LinearLayout ll = new LinearLayout(this);
|
||||
LinearLayout.LayoutParams llLayoutParams = new LinearLayout.LayoutParams(
|
||||
LinearLayout.LayoutParams.MATCH_PARENT,
|
||||
LinearLayout.LayoutParams.MATCH_PARENT);
|
||||
|
||||
ProgressBar pb = new ProgressBar(this);
|
||||
pb.setIndeterminate(true);
|
||||
LinearLayout.LayoutParams pbLayoutParams = new LinearLayout.LayoutParams(
|
||||
LinearLayout.LayoutParams.WRAP_CONTENT,
|
||||
LinearLayout.LayoutParams.WRAP_CONTENT);
|
||||
pbLayoutParams.gravity = Gravity.CENTER;
|
||||
ll.addView(pb, pbLayoutParams);
|
||||
addContentView(ll, llLayoutParams);
|
||||
}
|
||||
|
||||
private void parseFeed() {
|
||||
if (feed == null || feed.getFile_url() == null) {
|
||||
throw new IllegalStateException(
|
||||
"feed must be non-null and downloaded when parseFeed is called");
|
||||
}
|
||||
|
||||
if (AppConfig.DEBUG)
|
||||
Log.d(TAG, "Parsing feed");
|
||||
|
||||
Thread thread = new Thread() {
|
||||
|
||||
@Override
|
||||
public void run() {
|
||||
String reasonDetailed = new String();
|
||||
boolean successful = false;
|
||||
FeedHandler handler = new FeedHandler();
|
||||
try {
|
||||
handler.parseFeed(feed);
|
||||
successful = true;
|
||||
} catch (SAXException e) {
|
||||
e.printStackTrace();
|
||||
reasonDetailed = e.getMessage();
|
||||
} catch (IOException e) {
|
||||
e.printStackTrace();
|
||||
reasonDetailed = e.getMessage();
|
||||
} catch (ParserConfigurationException e) {
|
||||
e.printStackTrace();
|
||||
reasonDetailed = e.getMessage();
|
||||
} catch (UnsupportedFeedtypeException e) {
|
||||
e.printStackTrace();
|
||||
reasonDetailed = e.getMessage();
|
||||
} finally {
|
||||
boolean rc = new File(feed.getFile_url()).delete();
|
||||
if (AppConfig.DEBUG)
|
||||
Log.d(TAG, "Deleted feed source file. Result: " + rc);
|
||||
}
|
||||
|
||||
if (successful) {
|
||||
runOnUiThread(new Runnable() {
|
||||
@Override
|
||||
public void run() {
|
||||
showFeedInformation();
|
||||
}
|
||||
});
|
||||
} else {
|
||||
final String errorMsg = DownloadError.getErrorString(
|
||||
OnlineFeedViewActivity.this,
|
||||
DownloadError.ERROR_PARSER_EXCEPTION)
|
||||
+ " (" + reasonDetailed + ")";
|
||||
runOnUiThread(new Runnable() {
|
||||
|
||||
@Override
|
||||
public void run() {
|
||||
showErrorDialog(errorMsg);
|
||||
}
|
||||
});
|
||||
}
|
||||
}
|
||||
};
|
||||
thread.start();
|
||||
}
|
||||
|
||||
/** Called when feed parsed successfully */
|
||||
protected void showFeedInformation() {
|
||||
|
||||
}
|
||||
|
||||
private void showErrorDialog(String errorMsg) {
|
||||
AlertDialog.Builder builder = new AlertDialog.Builder(this);
|
||||
builder.setTitle(R.string.error_label);
|
||||
if (errorMsg != null) {
|
||||
builder.setMessage(getString(R.string.error_msg_prefix) + errorMsg);
|
||||
} else {
|
||||
builder.setMessage(R.string.error_msg_prefix);
|
||||
}
|
||||
builder.setNeutralButton(android.R.string.ok, new DialogInterface.OnClickListener() {
|
||||
|
||||
@Override
|
||||
public void onClick(DialogInterface dialog, int which) {
|
||||
dialog.cancel();
|
||||
}
|
||||
});
|
||||
builder.setOnCancelListener(new OnCancelListener() {
|
||||
@Override
|
||||
public void onCancel(DialogInterface dialog) {
|
||||
setResult(RESULT_ERROR);
|
||||
finish();
|
||||
}
|
||||
});
|
||||
}
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue