diff options
Diffstat (limited to 'subsonic-android/src/github/daneren2005/subphonic/util/BackgroundTask.java')
-rw-r--r-- | subsonic-android/src/github/daneren2005/subphonic/util/BackgroundTask.java | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/subsonic-android/src/github/daneren2005/subphonic/util/BackgroundTask.java b/subsonic-android/src/github/daneren2005/subphonic/util/BackgroundTask.java new file mode 100644 index 00000000..92521aa0 --- /dev/null +++ b/subsonic-android/src/github/daneren2005/subphonic/util/BackgroundTask.java @@ -0,0 +1,96 @@ +/* + This file is part of Subsonic. + + Subsonic is free software: you can redistribute it and/or modify + it under the terms of the GNU General Public License as published by + the Free Software Foundation, either version 3 of the License, or + (at your option) any later version. + + Subsonic is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + GNU General Public License for more details. + + You should have received a copy of the GNU General Public License + along with Subsonic. If not, see <http://www.gnu.org/licenses/>. + + Copyright 2009 (C) Sindre Mehus + */ +package github.daneren2005.subphonic.util; + +import java.io.FileNotFoundException; +import java.io.IOException; + +import org.xmlpull.v1.XmlPullParserException; + +import android.app.Activity; +import android.os.Handler; +import android.util.Log; +import github.daneren2005.subphonic.R; + +/** + * @author Sindre Mehus + */ +public abstract class BackgroundTask<T> implements ProgressListener { + + private static final String TAG = BackgroundTask.class.getSimpleName(); + private final Activity activity; + private final Handler handler; + + public BackgroundTask(Activity activity) { + this.activity = activity; + handler = new Handler(); + } + + protected Activity getActivity() { + return activity; + } + + protected Handler getHandler() { + return handler; + } + + public abstract void execute(); + + protected abstract T doInBackground() throws Throwable; + + protected abstract void done(T result); + + protected void error(Throwable error) { + Log.w(TAG, "Got exception: " + error, error); + new ErrorDialog(activity, getErrorMessage(error), true); + } + + protected String getErrorMessage(Throwable error) { + + if (error instanceof IOException && !Util.isNetworkConnected(activity)) { + return activity.getResources().getString(R.string.background_task_no_network); + } + + if (error instanceof FileNotFoundException) { + return activity.getResources().getString(R.string.background_task_not_found); + } + + if (error instanceof IOException) { + return activity.getResources().getString(R.string.background_task_network_error); + } + + if (error instanceof XmlPullParserException) { + return activity.getResources().getString(R.string.background_task_parse_error); + } + + String message = error.getMessage(); + if (message != null) { + return message; + } + return error.getClass().getSimpleName(); + } + + @Override + public abstract void updateProgress(final String message); + + @Override + public void updateProgress(int messageId) { + updateProgress(activity.getResources().getString(messageId)); + } +}
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