@Override
public void run() {
AtomicBoolean pause = engine.getPause();
if (pause.get()) {
synchronized (pause) {
log(LOG_WAITING_FOR_RESUME, memoryCacheKey);
try {
pause.wait();
} catch (InterruptedException e) {
L.e(LOG_TASK_INTERRUPTED, memoryCacheKey);
return;
}
log(LOG_RESUME_AFTER_PAUSE, memoryCacheKey);
}
}
if (checkTaskIsNotActual()) return;
if (options.shouldDelayBeforeLoading()) {
log(LOG_DELAY_BEFORE_LOADING, options.getDelayBeforeLoading(), memoryCacheKey);
try {
Thread.sleep(options.getDelayBeforeLoading());
} catch (InterruptedException e) {
L.e(LOG_TASK_INTERRUPTED, memoryCacheKey);
return;
}
if (checkTaskIsNotActual()) return;
}
ReentrantLock loadFromUriLock = imageLoadingInfo.loadFromUriLock;
log(LOG_START_DISPLAY_IMAGE_TASK, memoryCacheKey);
if (loadFromUriLock.isLocked()) {
log(LOG_WAITING_FOR_IMAGE_LOADED, memoryCacheKey);
}
loadFromUriLock.lock();
Bitmap bmp;
try {
if (checkTaskIsNotActual()) return;
bmp = configuration.memoryCache.get(memoryCacheKey);
if (bmp == null) {
bmp = tryLoadBitmap();
if (bmp == null) return;
if (checkTaskIsNotActual() || checkTaskIsInterrupted()) return;
if (options.isCacheInMemory()) {
if (options.shouldPreProcess()) {
log(LOG_PREPROCESS_IMAGE, memoryCacheKey);
bmp = options.getPreProcessor().process(bmp, imageView);
}
log(LOG_CACHE_IMAGE_IN_MEMORY, memoryCacheKey);
configuration.memoryCache.put(memoryCacheKey, bmp);
}
} else {
log(LOG_GET_IMAGE_FROM_MEMORY_CACHE_AFTER_WAITING, memoryCacheKey);
}
if (options.shouldPostProcess()) {
log(LOG_POSTPROCESS_IMAGE, memoryCacheKey);
bmp = options.getPostProcessor().process(bmp, imageView);
}
} finally {
loadFromUriLock.unlock();
}
if (checkTaskIsNotActual() || checkTaskIsInterrupted()) return;
DisplayBitmapTask displayBitmapTask = new DisplayBitmapTask(bmp, imageLoadingInfo, engine);
displayBitmapTask.setLoggingEnabled(loggingEnabled);
handler.post(displayBitmapTask);
}
/**
* Adds display image task to execution pool. Image will be set to ImageView when it's turn.<br>
* <b>NOTE:</b> {@link #init(ImageLoaderConfiguration)} method must be called before this method
* call
*
* @param uri Image URI (i.e. "http://site.com/image.png", "file:///mnt/sdcard/image.png")
* @param imageView {@link ImageView} which should display image
* @param options {@linkplain DisplayImageOptions Display image options} for image displaying. If
* <b>null</b> - default display image options {@linkplain
* ImageLoaderConfiguration.Builder#defaultDisplayImageOptions(DisplayImageOptions) from
* configuration} will be used.
* @param listener {@linkplain ImageLoadingListener Listener} for image loading process. Listener
* fires events on UI thread.
* @throws IllegalStateException if {@link #init(ImageLoaderConfiguration)} method wasn't called
* before
* @throws IllegalArgumentException if passed <b>imageView</b> is null
*/
public void displayImage(
String uri, ImageView imageView, DisplayImageOptions options, ImageLoadingListener listener) {
checkConfiguration();
if (imageView == null) {
throw new IllegalArgumentException(ERROR_WRONG_ARGUMENTS);
}
if (listener == null) {
listener = emptyListener;
}
if (options == null) {
options = configuration.defaultDisplayImageOptions;
}
if (TextUtils.isEmpty(uri)) {
engine.cancelDisplayTaskFor(imageView);
listener.onLoadingStarted(uri, imageView);
if (options.shouldShowImageResForEmptyUri()) {
imageView.setImageResource(options.getImageResForEmptyUri());
} else if (options.shouldShowImageForEmptyUri()) {
imageView.setImageDrawable(options.getImageForEmptyUri());
} else {
imageView.setImageDrawable(null);
}
listener.onLoadingComplete(uri, imageView, null);
return;
}
ImageSize targetSize =
ImageSizeUtils.defineTargetSizeForView(
imageView,
configuration.maxImageWidthForMemoryCache,
configuration.maxImageHeightForMemoryCache);
String memoryCacheKey = MemoryCacheUtil.generateKey(uri, targetSize);
engine.prepareDisplayTaskFor(imageView, memoryCacheKey);
listener.onLoadingStarted(uri, imageView);
Bitmap bmp = configuration.memoryCache.get(memoryCacheKey);
if (bmp != null && !bmp.isRecycled()) {
if (configuration.writeLogs) {
L.d(LOG_LOAD_IMAGE_FROM_MEMORY_CACHE, memoryCacheKey);
}
if (options.shouldPostProcess()) {
ImageLoadingInfo imageLoadingInfo =
new ImageLoadingInfo(
uri,
imageView,
targetSize,
memoryCacheKey,
options,
listener,
engine.getLockForUri(uri));
ProcessAndDisplayImageTask displayTask =
new ProcessAndDisplayImageTask(engine, bmp, imageLoadingInfo, options.getHandler());
engine.submit(displayTask);
} else {
options.getDisplayer().display(bmp, imageView, LoadedFrom.MEMORY_CACHE);
listener.onLoadingComplete(uri, imageView, bmp);
}
} else {
if (options.shouldShowImageResOnLoading()) {
imageView.setImageResource(options.getImageResOnLoading());
} else if (options.shouldShowImageOnLoading()) {
imageView.setImageDrawable(options.getImageOnLoading());
} else {
if (options.isResetViewBeforeLoading()) {
imageView.setImageDrawable(null);
}
}
ImageLoadingInfo imageLoadingInfo =
new ImageLoadingInfo(
uri,
imageView,
targetSize,
memoryCacheKey,
options,
listener,
engine.getLockForUri(uri));
LoadAndDisplayImageTask displayTask =
new LoadAndDisplayImageTask(engine, imageLoadingInfo, options.getHandler());
engine.submit(displayTask);
}
}
@Override
public void run() {
if (waitIfPaused()) return;
if (delayIfNeed()) return;
ReentrantLock loadFromUriLock = imageLoadingInfo.loadFromUriLock;
log(LOG_START_DISPLAY_IMAGE_TASK);
if (loadFromUriLock.isLocked()) {
log(LOG_WAITING_FOR_IMAGE_LOADED);
}
loadFromUriLock.lock();
Bitmap bmp;
try {
checkTaskNotActual();
bmp = configuration.memoryCache.get(memoryCacheKey);
if (bmp == null) {
bmp = tryLoadBitmap();
if (bmp == null) return; // listener callback already was fired
checkTaskNotActual();
checkTaskInterrupted();
if (options.shouldPreProcess()) {
log(LOG_PREPROCESS_IMAGE);
bmp = options.getPreProcessor().process(bmp);
if (bmp == null) {
L.e(ERROR_PRE_PROCESSOR_NULL, memoryCacheKey);
}
}
if (bmp != null && options.isCacheInMemory()) {
log(LOG_CACHE_IMAGE_IN_MEMORY);
configuration.memoryCache.put(memoryCacheKey, bmp);
}
} else {
loadedFrom = LoadedFrom.MEMORY_CACHE;
log(LOG_GET_IMAGE_FROM_MEMORY_CACHE_AFTER_WAITING);
}
if (bmp != null && options.shouldPostProcess()) {
log(LOG_POSTPROCESS_IMAGE);
bmp = options.getPostProcessor().process(bmp);
if (bmp == null) {
L.e(ERROR_POST_PROCESSOR_NULL, memoryCacheKey);
}
}
checkTaskNotActual();
checkTaskInterrupted();
} catch (TaskCancelledException e) {
fireCancelEvent();
return;
} finally {
loadFromUriLock.unlock();
}
DisplayBitmapTask displayBitmapTask =
new DisplayBitmapTask(bmp, imageLoadingInfo, engine, loadedFrom);
displayBitmapTask.setLoggingEnabled(writeLogs);
if (options.isSyncLoading()) {
displayBitmapTask.run();
} else {
handler.post(displayBitmapTask);
}
}
