VIF(Very Important Files) is LRU(Least Recently Used) disk cache library, with SqlLite journal.

Features

• Light library - No third party dependencies, 15.8KB size.
• Corrupted files protection - It is guarantee that each time you access cache you will get non corrupted files
• LRU memory management - When more memory needed least recently used files will be deleted first
• Developers friendly - You can access both InputStream and File objects

Usage

    @Override
    public void run() {
        appCache = new DiskCache(this, "app_cache", 1024 * 1024 * 20);// 20 MB cache
        downloadImage(url);
        loadImage(imageView, url);
    }

    private void downloadImage(String imageUrl) {
        URL url = new URL(imageUrl);
        URLConnection connection = url.openConnection();
        connection.connect();

        appCache.put(imageUrl, connection.getInputStream());
    }

    private void loadImage(final ImageView imageView, String imageUrl) {
        appCache.getAsObject(MY_IMAGE, new DiskCache.ParserCallback<Bitmap>() {
            @Override
            public Bitmap parse(@NonNull File file) throws Exception {
                return BitmapFactory.decodeFile(file.getAbsolutePath());
            }

            @Override
            public void onError(@NonNull Throwable e) {

            }

            @Override
            public void onResult(@Nullable Bitmap result) {
                imageView.setImageBitmap(result);
            }
        });
    }

• VIF.put(String key, InputStream inputStream, Runnable callback): Asynchronously adds entry to the cache and call the optional callback on the main thread when complete
• VIF.delete(String key): Deletes the cache entry
• VIF.getAsFile(String key, FileCallback callback): Retrieve the cached entry as file
• VIF.getAsObject(String key, ParserCallback callback): Retrieve the cached entry as an Object
• VIF.shutDown(): Gracefully asynchronously shut down the cache
• VIF.shutDownAndWait(): Gracefully synchronously shut down the cache

License

MIT