/**
* 开始下载任务
*
* @param downloadId
* @param callback
*/
public void startTask(int downloadId, FileDownloaderCallback callback) {
FileDownloaderModel model = getFileDownloaderModelById(downloadId);
if (model != null) {
BridgeListener bridgeListener = mListenerManager.getBridgeListener(downloadId);
bridgeListener.addDownloadListener(callback);
if (mDownloadingList.size() >= mConfiguration.getMaxDownloadingCount()) { // 下载中队列已满
if (!mWaitQueue.contains(model)) {
mWaitQueue.offer(model);
}
bridgeListener.wait(downloadId);
} else {
mDownloadingList.add(model);
final BaseDownloadTask task =
FileDownloader.getImpl()
.create(model.getUrl())
.setPath(model.getPath())
.setCallbackProgressTimes(100)
.setAutoRetryTimes(mAutoRetryTimes)
.setListener(bridgeListener);
for (int i = 0; i < mHeaders.size(); i++) {
task.addHeader(mHeaders.name(i), mHeaders.value(i));
}
bridgeListener.setDownloadTask(task);
task.start();
}
} else {
ILogger.e("Task does not exist!");
}
}
/**
* 删除一个任务
*
* @param downloadId
*/
public void deleteTask(int downloadId) {
if (mDbController.deleteTask(downloadId)) {
FileDownloaderModel model = getFileDownloaderModelById(downloadId);
if (model != null) { // 删除文件
new File(model.getPath()).delete();
}
pauseTask(downloadId);
removeDownloadingTask(downloadId);
removeWaitQueueTask(downloadId);
try {
mAllTasks.remove(downloadId);
} catch (Exception e) {
ILogger.e(e);
}
} else {
ILogger.e("delete failure");
}
}
/**
* 将一个等待中的任务从下等待队列中移除
*
* @param downloadId
*/
protected synchronized void removeWaitQueueTask(int downloadId) {
Iterator<FileDownloaderModel> iterator = mWaitQueue.iterator();
while (iterator.hasNext()) {
FileDownloaderModel model = iterator.next();
if (model != null && model.getId() == downloadId) {
try {
iterator.remove();
} catch (Exception e) {
ILogger.e(e);
}
return;
}
}
}
