ImageLoader - do not load an image if it is already cached.
I don't want to load images if they are already cached. I am using the ImageLoader library from NOSTRA. Please tell me if there is a way to do this. Below is the code: -
DisplayImageOptions options = new DisplayImageOptions.Builder()
.showStubImage(R.drawable.ic_stub)
.showImageForEmptyUri(R.drawable.ic_sample)
.resetViewBeforeLoading()
.cacheInMemory()
.cacheOnDisc()
.imageScaleType(ImageScaleType.EXACTLY_STRETCHED)
.bitmapConfig(Bitmap.Config.ARGB_8888)
.build();
imageLoader.displayImage(url2.toString()
,thumbnail,options, new
ImageLoadingListener() {
@Override
public void onLoadingStarted() {
// progressBar.setVisibility(grid.VISIBLE);
// grid.notify();
}
@Override
public void onLoadingFailed(FailReason failReason) {
//progressBar.setVisibility(grid.GONE);
// grid.notify();
}
@Override
public void onLoadingComplete(Bitmap bitmap) {
// progressBar.setVisibility(grid.GONE);
// grid.notify();
}
@Override
public void onLoadingCancelled() {
// progressBar.setVisibility(grid.GONE);
//grid.notify();
}
});
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You haven't defined default caching options in DisplayImageOption
.
ImageLoaderConfiguration config = new ImageLoaderConfiguration.Builder(this)
.threadPoolSize(5)
.threadPriority(Thread.MIN_PRIORITY + 3)
.denyCacheImageMultipleSizesInMemory()
// 1MB=1048576
.memoryCacheSize(1048576 * 5)
.discCache(new UnlimitedDiscCache(cacheDir))
.build();
Here cacheDir
is the directory that can be on SD card
(requires "android.permission.WRITE_EXTERNAL_STORAGE" permission) or application cache
.
I have provided cacheDirectory
in my application.
File cacheDir = new File(this.getCacheDir(), "name of directory");
if (!cacheDir.exists())
cacheDir.mkdir();
Now provide config ImageLoader
by executing code before loading any image,
imageLoader.init(config);
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