@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MSG_INIT:
// 获得初始化的结果
FileInfo fileInfo = (FileInfo) msg.obj;
Log.i("fileTest", fileInfo.toString());
// 启动下载任务
DownloadTask task = new DownloadTask(DownloadService.this, fileInfo, 3);
task.download();
// 把下载任务加入 到下载任务集合
mTasks.put(fileInfo.getId(), task);
break;
}
}
@Override
public int onStartCommand(Intent intent, int flags, int startId) {
if (ACTION_START.equals(intent.getAction())) {
FileInfo fileInfo = (FileInfo) intent.getSerializableExtra("fileInfo");
Log.i("fileInfo", "start:" + fileInfo.toString());
// 启动初始化线程
DownloadTask.sExecutorService.execute(new InitThread(fileInfo));
} else if (ACTION_PAUSE.equals(intent.getAction())) {
FileInfo fileInfo = (FileInfo) intent.getSerializableExtra("fileInfo");
Log.i("fileInfo", "pause:" + fileInfo.toString());
// 从任务集合获得任务
DownloadTask task = mTasks.get(fileInfo.getId());
// 暂停下载
if (task != null) {
task.isPause = true;
}
}
return super.onStartCommand(intent, flags, startId);
}
@Override
public void run() {
HttpURLConnection conn = null;
RandomAccessFile raf = null;
try {
URL url = new URL(fileInfo.getFileUrl());
conn = (HttpURLConnection) url.openConnection();
conn.setReadTimeout(5000);
conn.setRequestMethod("GET");
int length = -1;
if (conn.getResponseCode() == HttpStatus.SC_OK) {
length = conn.getContentLength();
}
if (length < 0) {
return;
}
File dir = new File(DOWNLOAD_DIR);
if (!dir.exists()) {
dir.mkdir();
}
File file = new File(dir, fileInfo.getFilename());
raf = new RandomAccessFile(file, "rwd");
raf.setLength(length);
fileInfo.setLength(length);
mHandler.obtainMessage(MSG_INIT, fileInfo).sendToTarget();
} catch (Exception e) {
e.printStackTrace();
} finally {
try {
if (conn != null) {
conn.disconnect();
}
if (raf != null) {
raf.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}