110 lines
3.6 KiB
Java
110 lines
3.6 KiB
Java
/*
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This file is part of Subsonic.
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Subsonic is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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Subsonic is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Subsonic. If not, see <http://www.gnu.org/licenses/>.
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Copyright 2009 (C) Sindre Mehus
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*/
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package org.moire.ultrasonic.util;
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import android.app.Activity;
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import android.os.Handler;
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import android.util.Log;
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import com.fasterxml.jackson.core.JsonParseException;
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import org.moire.ultrasonic.R;
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import org.moire.ultrasonic.service.SubsonicRESTException;
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import org.moire.ultrasonic.subsonic.RestErrorMapper;
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import javax.net.ssl.SSLException;
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import java.io.FileNotFoundException;
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import java.io.IOException;
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import java.security.cert.CertPathValidatorException;
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import java.security.cert.CertificateException;
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/**
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* @author Sindre Mehus
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*/
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public abstract class BackgroundTask<T> implements ProgressListener
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{
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private static final String TAG = BackgroundTask.class.getSimpleName();
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private final Activity activity;
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private final Handler handler;
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public BackgroundTask(Activity activity)
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{
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this.activity = activity;
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handler = new Handler();
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}
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protected Activity getActivity()
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{
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return activity;
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}
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protected Handler getHandler()
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{
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return handler;
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}
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public abstract void execute();
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protected abstract T doInBackground() throws Throwable;
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protected abstract void done(T result);
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protected void error(Throwable error)
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{
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Log.w(TAG, String.format("Got exception: %s", error), error);
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new ErrorDialog(activity, getErrorMessage(error), false);
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}
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protected String getErrorMessage(Throwable error) {
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if (error instanceof IOException && !Util.isNetworkConnected(activity)) {
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return activity.getResources().getString(R.string.background_task_no_network);
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} else if (error instanceof FileNotFoundException) {
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return activity.getResources().getString(R.string.background_task_not_found);
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} else if (error instanceof JsonParseException) {
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return activity.getResources().getString(R.string.background_task_parse_error);
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} else if (error instanceof SSLException) {
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if (error.getCause() instanceof CertificateException &&
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error.getCause().getCause() instanceof CertPathValidatorException) {
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return activity.getResources()
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.getString(R.string.background_task_ssl_cert_error,
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error.getCause().getCause().getMessage());
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} else {
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return activity.getResources().getString(R.string.background_task_ssl_error);
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}
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} else if (error instanceof IOException) {
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return activity.getResources().getString(R.string.background_task_network_error);
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} else if (error instanceof SubsonicRESTException) {
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return RestErrorMapper.getLocalizedErrorMessage((SubsonicRESTException) error, activity);
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}
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String message = error.getMessage();
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if (message != null) {
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return message;
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}
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return error.getClass().getSimpleName();
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}
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@Override
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public abstract void updateProgress(final String message);
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@Override
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public void updateProgress(int messageId)
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{
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updateProgress(activity.getResources().getString(messageId));
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}
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} |