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com.nostra13.universalimageloader.core.DisplayBitmapTask Maven / Gradle / Ivy
package com.nostra13.universalimageloader.core;
import com.nostra13.universalimageloader.core.assist.ImageLoadingListener;
import com.nostra13.universalimageloader.core.display.BitmapDisplayer;
import com.nostra13.universalimageloader.utils.L;
import android.graphics.Bitmap;
import android.widget.ImageView;
/**
* Displays bitmap in {@link ImageView}. Must be called on UI thread.
*
* @author Sergey Tarasevich (nostra13[at]gmail[dot]com)
* @see ImageLoadingListener
* @see BitmapDisplayer
*/
final class DisplayBitmapTask implements Runnable {
private static final String LOG_DISPLAY_IMAGE_IN_IMAGEVIEW = "Display image in ImageView [%s]";
private static final String LOG_TASK_CANCELLED = "ImageView is reused for another image. Task is cancelled. [%s]";
private final Bitmap bitmap;
private final ImageView imageView;
private final String memoryCacheKey;
private final BitmapDisplayer bitmapDisplayer;
private final ImageLoadingListener listener;
private boolean loggingEnabled;
public DisplayBitmapTask(Bitmap bitmap, ImageLoadingInfo imageLoadingInfo) {
this.bitmap = bitmap;
imageView = imageLoadingInfo.imageView;
memoryCacheKey = imageLoadingInfo.memoryCacheKey;
bitmapDisplayer = imageLoadingInfo.options.getDisplayer();
listener = imageLoadingInfo.listener;
}
public void run() {
if (isViewWasReused()) {
if (loggingEnabled) L.i(LOG_TASK_CANCELLED, memoryCacheKey);
listener.onLoadingCancelled();
} else {
if (loggingEnabled) L.i(LOG_DISPLAY_IMAGE_IN_IMAGEVIEW, memoryCacheKey);
Bitmap displayedBitmap = bitmapDisplayer.display(bitmap, imageView);
listener.onLoadingComplete(displayedBitmap);
ImageLoader.getInstance().cancelDisplayTask(imageView);
}
}
/** Checks whether memory cache key (image URI) for current ImageView is actual */
private boolean isViewWasReused() {
String currentCacheKey = ImageLoader.getInstance().getLoadingUriForView(imageView);
return !memoryCacheKey.equals(currentCacheKey);
}
void setLoggingEnabled(boolean loggingEnabled) {
this.loggingEnabled = loggingEnabled;
}
}
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