@Override
public void download(
final Context context,
final String url,
final String filename,
final UrlDownloaderCallback callback,
final Runnable completion) {
final AsyncTask<Void, Void, Void> downloader =
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(final Void... params) {
try {
final ContentResolver cr = context.getContentResolver();
InputStream is = cr.openInputStream(Uri.parse(url));
callback.onDownloadComplete(ContentUrlDownloader.this, is, null);
return null;
} catch (final Throwable e) {
e.printStackTrace();
return null;
}
}
@Override
protected void onPostExecute(final Void result) {
completion.run();
}
};
UrlImageViewHelper.executeTask(downloader);
}
@Override
public void download(
final Context context,
final String url,
final String filename,
final Runnable loader,
final Runnable completion) {
AsyncTask<Void, Void, Void> downloader =
new AsyncTask<Void, Void, Void>() {
@Override
protected Void doInBackground(Void... params) {
InputStream is = null;
FileOutputStream fos = null;
AndroidHttpClient client = null;
try {
if (url.startsWith(ContactsContract.Contacts.CONTENT_URI.toString())) {
ContentResolver cr = context.getContentResolver();
is =
ContactsContract.Contacts.openContactPhotoInputStream(cr, Uri.parse(url));
} else {
client = AndroidHttpClient.newInstance(context.getPackageName());
HttpGet get = new HttpGet(url);
HttpParams httpParams = new BasicHttpParams();
HttpClientParams.setRedirecting(httpParams, true);
if (mRequestPropertiesCallback != null) {
ArrayList<NameValuePair> props =
mRequestPropertiesCallback.getHeadersForRequest(context, url);
if (props != null) {
for (NameValuePair pair : props) {
httpParams.setParameter(pair.getName(), pair.getValue());
}
}
}
get.setParams(httpParams);
HttpResponse resp = client.execute(get);
int status = resp.getStatusLine().getStatusCode();
if (status != HttpURLConnection.HTTP_OK) {
return null;
}
HttpEntity entity = resp.getEntity();
is = entity.getContent();
}
if (is != null) {
fos = new FileOutputStream(filename);
copyStream(is, fos);
}
loader.run();
return null;
} catch (Throwable e) {
Log.e(getClass().getSimpleName(), "Error thrown while getting drawable", e);
return null;
} finally {
if (client != null) {
client.close();
}
if (is != null) {
try {
is.close();
} catch (IOException e) {
Log.e(getClass().getSimpleName(), "Failed to close input stream", e);
}
}
if (fos != null) {
try {
fos.close();
} catch (IOException e) {
Log.e(getClass().getSimpleName(), "Failed to close file output stream");
}
}
}
}
protected void onPostExecute(Void result) {
completion.run();
}
};
executeTask(downloader);
}
private static void setUrlDrawable(
final Context context,
ImageView imageView,
final String url,
final Drawable defaultDrawable,
long cacheDurationMs,
final UrlImageViewCallback callback) {
cleanup(context);
// disassociate this ImageView from any pending downloads
if (isNullOrEmpty(url)) {
if (imageView != null) imageView.setImageDrawable(defaultDrawable);
return;
}
WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();
int tw = display.getWidth();
int th = display.getHeight();
if (mDeadCache == null) mDeadCache = new UrlLruCache(getHeapSize(context) / 8);
Drawable drawable;
BitmapDrawable zd = mDeadCache.remove(url);
if (zd != null) {
// this drawable was resurrected, it should not be in the live cache
if (Constants.LOG_ENABLED) Log.i(Constants.LOGTAG, "zombie load");
Assert.assertTrue(!mAllCache.contains(zd));
drawable = new ZombieDrawable(url, zd);
} else {
drawable = mLiveCache.get(url);
}
if (drawable != null) {
if (Constants.LOG_ENABLED) Log.i(Constants.LOGTAG, "Cache hit on: " + url);
if (imageView != null) imageView.setImageDrawable(drawable);
if (callback != null) callback.onLoaded(imageView, drawable, url, true);
return;
}
// oh noes, at this point we definitely do not have the file available in memory
// let's prepare for an asynchronous load of the image.
final String filename = context.getFileStreamPath(getFilenameForUrl(url)).getAbsolutePath();
// null it while it is downloading
if (imageView != null) imageView.setImageDrawable(defaultDrawable);
// since listviews reuse their views, we need to
// take note of which url this view is waiting for.
// This may change rapidly as the list scrolls or is filtered, etc.
if (Constants.LOG_ENABLED) Log.i(Constants.LOGTAG, "Waiting for " + url);
if (imageView != null) mPendingViews.put(imageView, url);
ArrayList<ImageView> currentDownload = mPendingDownloads.get(url);
if (currentDownload != null) {
// Also, multiple vies may be waiting for this url.
// So, let's maintain a list of these views.
// When the url is downloaded, it sets the imagedrawable for
// every view in the list. It needs to also validate that
// the imageview is still waiting for this url.
if (imageView != null) currentDownload.add(imageView);
return;
}
final ArrayList<ImageView> downloads = new ArrayList<ImageView>();
if (imageView != null) downloads.add(imageView);
mPendingDownloads.put(url, downloads);
final int targetWidth = tw <= 0 ? Integer.MAX_VALUE : tw;
final int targetHeight = th <= 0 ? Integer.MAX_VALUE : th;
final Loader loader =
new Loader() {
@Override
public void run() {
try {
result = loadDrawableFromStream(context, url, filename, targetWidth, targetHeight);
} catch (Exception ex) {
}
}
};
final Runnable completion =
new Runnable() {
@Override
public void run() {
Assert.assertEquals(Looper.myLooper(), Looper.getMainLooper());
Drawable usableResult = loader.result;
if (usableResult == null) usableResult = defaultDrawable;
mPendingDownloads.remove(url);
mLiveCache.put(url, usableResult);
for (ImageView iv : downloads) {
// validate the url it is waiting for
String pendingUrl = mPendingViews.get(iv);
if (!url.equals(pendingUrl)) {
if (Constants.LOG_ENABLED)
Log.i(Constants.LOGTAG, "Ignoring out of date request to update view for " + url);
continue;
}
mPendingViews.remove(iv);
if (usableResult != null) {
// System.out.println(String.format("imageView: %dx%d,
// %dx%d", imageView.getMeasuredWidth(), imageView.getMeasuredHeight(),
// imageView.getWidth(), imageView.getHeight()));
iv.setImageDrawable(usableResult);
// System.out.println(String.format("imageView: %dx%d,
// %dx%d", imageView.getMeasuredWidth(), imageView.getMeasuredHeight(),
// imageView.getWidth(), imageView.getHeight()));
if (callback != null) callback.onLoaded(iv, loader.result, url, false);
}
}
}
};
File file = new File(filename);
if (file.exists()) {
try {
if (cacheDurationMs == CACHE_DURATION_INFINITE
|| System.currentTimeMillis() < file.lastModified() + cacheDurationMs) {
if (Constants.LOG_ENABLED)
Log.i(
Constants.LOGTAG,
"File Cache hit on: "
+ url
+ ". "
+ (System.currentTimeMillis() - file.lastModified())
+ "ms old.");
AsyncTask<Void, Void, Void> fileloader =
new AsyncTask<Void, Void, Void>() {
protected Void doInBackground(Void[] params) {
loader.run();
return null;
}
protected void onPostExecute(Void result) {
completion.run();
}
};
executeTask(fileloader);
return;
} else {
if (Constants.LOG_ENABLED) Log.i(Constants.LOGTAG, "File cache has expired. Refreshing.");
}
} catch (Exception ex) {
}
}
mDownloader.download(context, url, filename, loader, completion);
}
