/** 初始化DownloadManager */
public synchronized void init(DownloaderManagerConfiguration configuration) {
FileDownloader.init(configuration.getContext(), configuration.getOkHttpClientCustomMaker());
FileDownloader.getImpl().bindService();
ILogger.DEBUG = configuration.isDebug();
FileDownloadLog.NEED_LOG = ILogger.DEBUG;
this.mConfiguration = configuration;
this.mExtFieldMap = configuration.getDbExtField();
mDbController =
new FileDownloaderDBController(
configuration.getContext(),
configuration.getDbVersion(),
mExtFieldMap,
configuration.getDbUpgradeListener());
mAllTasks = mDbController.getAllTasks();
mConnectListenerList = new ArrayList<>();
mListenerManager = new ListenerManager();
mAutoRetryTimes = configuration.getAutoRetryTimes();
mHeaders = configuration.getHeaders();
// 设置下载保存目录
if (!StringUtils.isEmpty(configuration.getDownloadStorePath())) {
FileDownloadUtils.setDefaultSaveRootPath(configuration.getDownloadStorePath());
}
mWaitQueue = new LinkedList<>();
mDownloadingList = Collections.synchronizedList(new ArrayList<FileDownloaderModel>());
mDownloadManager = this;
ShellUtils.execCommand("chmod 777 " + configuration.getDownloadStorePath(), false);
}
/**
* 下载一个任务
*
* @param url
* @param listener
*/
public void addTask(String url, DownloadListener listener) {
if (StringUtils.isEmpty(url)) {
Logger.d("download url null");
return;
}
DownloadInfo downloadInfo = new DownloadInfo();
downloadInfo.setUrl(url);
if (!hasTask(url)) {
downloadInfo.setTargetFolder(mTargetFolder);
try {
mDbHelper.save(downloadInfo);
} catch (DbException e) {
Logger.e(e);
}
if (mDownloadingTasks.size() < MAX_DOWNLOAD_COUNT) {
downloadInfo.setState(DownloadInfo.DOWNLOADING);
mDownloadingTasks.add(downloadInfo);
DownloadHttpTask task =
new DownloadHttpTask(downloadInfo, mDownloadUIHandler, mDbHelper, this);
mDownloadingTaskMap.put(url, task);
task.start();
} else { // 加入等待队列
downloadInfo.setState(DownloadInfo.WAIT);
boolean b = mWaitTasks.offer(downloadInfo);
if (b) {
addTaskListener(url, listener);
}
}
mAllTasks.add(downloadInfo);
} else {
Logger.d("任务已存在");
}
}
/**
* 删除任务
*
* @param url
*/
public void deleteTask(String url) {
// 从等待队列和下载中
stopTask(url, true);
// 从已暂停队列移除
Iterator<DownloadInfo> pausingIt = mPausingTasks.iterator();
synchronized (mIteratorLock) {
while (pausingIt.hasNext()) {
DownloadInfo bean = pausingIt.next();
if (TextUtils.equals(bean.getUrl(), url)) {
bean.setState(DownloadInfo.PAUSE);
pausingIt.remove();
break;
}
}
}
// 从完成队列移除
Iterator<DownloadInfo> completeIt = mCompleteTasks.iterator();
synchronized (mIteratorLock) {
while (completeIt.hasNext()) {
DownloadInfo bean = completeIt.next();
if (TextUtils.equals(bean.getUrl(), url)) {
bean.setState(DownloadInfo.PAUSE);
completeIt.remove();
break;
}
}
}
synchronized (mIteratorLock) {
String filePath = "";
// 所有任务
Iterator<DownloadInfo> allTaskIt = mAllTasks.iterator();
while (allTaskIt.hasNext()) {
DownloadInfo bean = allTaskIt.next();
if (TextUtils.equals(bean.getUrl(), url)) {
bean.setState(DownloadInfo.PAUSE);
filePath = bean.getTargetPath();
allTaskIt.remove();
break;
}
}
if (!StringUtils.isEmpty(filePath)) {
FileUtils.deleteFile(filePath);
}
}
synchronized (mIteratorLock) {
// 任务时间回调
for (Map.Entry<String, List<DownloadListener>> entry : mListenerListMap.entrySet()) {
List<DownloadListener> listenerList = entry.getValue();
if (listenerList != null) {
listenerList.clear();
listenerList = null;
}
}
}
// 清除数据库
try {
mDbHelper.delete(DownloadInfo.class, WhereBuilder.b("url", "=", url));
} catch (DbException e) {
Logger.e(e);
}
}