/**
* Same as download but the image is always downloaded and the cache is not used. Kept private at
* the moment as its interest is not clear.
*/
private void forceDownload(String url, ImageView imageView) {
// State sanity: url is guaranteed to never be null in DownloadedDrawable and cache keys.
if (url == null) {
imageView.setImageDrawable(null);
return;
}
if (cancelPotentialDownload(url, imageView)) {
// switch (mode) {
// case NO_ASYNC_TASK:
// Bitmap bitmap = downloadBitmap(url);
// addBitmapToCache(url, bitmap);
// imageView.setImageBitmap(bitmap);
// break;
//
// case NO_DOWNLOADED_DRAWABLE:
// imageView.setMinimumHeight(156);
BitmapDownloaderTask task = new BitmapDownloaderTask(imageView);
// task.execute(url);
// break;
//
// case CORRECT:
// task = new BitmapDownloaderTask(imageView);
DownloadedDrawable downloadedDrawable = new DownloadedDrawable(task);
imageView.setImageDrawable(downloadedDrawable);
// imageView.setMinimumHeight(156);
task.execute(url);
// break;
// }
}
}
public void scheduleForLoad(ImageView imageView, ImageSource src) {
boolean imageSet = setImageIfDownloadNotNeeded(imageView, src);
if (imageSet) return;
// download needed
BitmapDownloaderTask<ImageSource> downloadTask =
new BitmapDownloaderTask<ImageSource>(this, imageDownloader, src, null, null);
downloadTask.execute();
downloaderTasksMap.put(src, downloadTask);
setImageIfDownloadNotNeeded(imageView, src); // set imageLoadingDrawable
}
/**
* Same as download but the image is always downloaded and the cache is not used. Kept private at
* the moment as its interest is not clear.
*/
private void forceDownload(String url, ImageView imageView) {
if (url == null) {
imageView.setImageDrawable(null); // TODO 更改为默认图�? return;
}
if (cancelPotentialDownload(url, imageView)) {
BitmapDownloaderTask task = new BitmapDownloaderTask(imageView);
task = new BitmapDownloaderTask(imageView);
DownloadedDrawable downloadedDrawable = new DownloadedDrawable(task);
imageView.setImageDrawable(downloadedDrawable);
task.execute(url);
}
}
/**
* Returns true if the current download has been canceled or if there was no download in progress
* on this image view. Returns false if the download in progress deals with the same url. The
* download is not stopped in that case.
*/
private static boolean cancelPotentialDownload(String url, ImageView imageView) {
BitmapDownloaderTask bitmapDownloaderTask = getBitmapDownloaderTask(imageView);
if (bitmapDownloaderTask != null) {
String bitmapUrl = bitmapDownloaderTask.url;
if ((bitmapUrl == null) || (!bitmapUrl.equals(url))) {
bitmapDownloaderTask.cancel(true);
} else {
// The same URL is already being downloaded.
return false;
}
}
return true;
}
private boolean wasLoadingError(ImageSource src) {
BitmapDownloaderTask<ImageSource> downloaderTask = downloaderTasksMap.get(src);
return (downloaderTask != null && downloaderTask.getStatus() == AsyncTask.Status.FINISHED);
}
