public void start() {
Log.i(TAG, "download start");
if (mDownloadThread != null) {
mDownloadThread.isRunning = false;
try {
mDownloadThread.interrupt();
} catch (Exception e) {
e.printStackTrace();
}
}
mDownloadThread = new DownloadThread();
downloadingPosition = -1;
isDownloaded = new boolean[book.pageCount];
for (int i = 0; i < book.pageCount; i++) {
isDownloaded[i] = PageApi.isPageOriginImageLocalFileExist(context, book, i + 1);
}
state = STATE_START;
mDownloadThread.start();
}
@Override
public void run() {
Log.i(TAG, "download thread start");
if (listener != null) listener.onStateChange(STATE_START);
while (isRunning && !isAllDownloaded()) {
downloadingPosition = nextToDownloadPosition();
Log.i(TAG, "downloadingPosition:" + downloadingPosition);
if (state == STATE_PAUSE) {
Log.i(TAG, "download paused");
if (listener != null) listener.onStateChange(STATE_PAUSE);
while (state == STATE_PAUSE) {
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
if (state == STATE_STOP) {
Log.i(TAG, "download stopped");
if (listener != null) listener.onStateChange(STATE_STOP);
isRunning = false;
return;
}
File tempFile = null;
try {
tempFile = PageApi.getPageOriginImageFile(context, book, downloadingPosition + 1);
} catch (Exception e) {
e.printStackTrace();
}
if (tempFile != null) {
Log.i(TAG, "download finish");
isDownloaded[downloadingPosition] = true;
if (listener != null) listener.onFinish(currentPosition);
} else {
Log.i(TAG, "download error");
if (listener != null) listener.onError(currentPosition, -1);
}
}
Log.i(TAG, "all downloaded");
if (listener != null) listener.onStateChange(STATE_ALL_OK);
isRunning = false;
}