private void tryLoadImage() {
if (mRequest == null || TextUtils.isEmpty(mRequest.getUrl())) {
return;
}
int width = getWidth();
int height = getHeight();
final String mUrl = mRequest.getUrl();
LayoutParams lyp = getLayoutParams();
boolean isFullyWrapContent =
lyp != null
&& lyp.height == LayoutParams.WRAP_CONTENT
&& lyp.width == LayoutParams.WRAP_CONTENT;
// if the view's bounds aren't known yet, and this is not a wrap-content/wrap-content
// view, hold off on loading the image.
if (width == 0 && height == 0 && !isFullyWrapContent) {
return;
}
mRequest.setLayoutSize(width, height);
// 1. Check the previous ImageTask related to this ImageView
if (null != mImageTask) {
// duplicated ImageTask, return directly.
if (mImageTask.isLoadingThisUrl(mRequest)) {
return;
}
// ImageView is reused, detach it from the related ImageViews of the previous ImageTask.
else {
mImageLoader.detachImageViewFromImageTask(mImageTask, this);
}
}
// 2. Let the ImageView hold this ImageTask. When ImageView is reused next time, check it in
// step 1.
ImageTask imageTask = mImageLoader.createImageTask(mRequest);
// .createImageTask(mUrl, width, height, mImageReuseInfo);
mImageTask = imageTask;
// 3. Query cache, if hit, return at once.
boolean hitCache = mImageLoader.queryCache(imageTask, this);
if (hitCache) {
return;
} else {
mImageLoader.addImageTask(mImageTask, this);
}
}
public void loadImage(ImageLoader imageLoader, ImageLoadRequest request) {
mImageLoader = imageLoader;
if (request == null || TextUtils.isEmpty(request.getUrl())) {
setImageDrawable(null);
mImageTask = null;
return;
}
mRequest = request;
tryLoadImage();
}
