[android-developers] libcore.io.ErrnoException: open failed: EMFILE (Too many open files)

I implemented a file cache to load small images for a long grid view. After scrolling a while, I get a lot of `libcore.io.ErrnoException: open failed: EMFILE (Too many open files)`

How do I avoid this? This is the code to read one bitmap:

    File fullCacheDir = new File(Environment.getExternalStorageDirectory().toString(), cacheDir);

    File file = new File(fullCacheDir.toString(), fileName);

    

    if (!file.exists()) {

    return null;

    }

    

    Bitmap bm = BitmapFactory.decodeFile(file.toString());

This is to save one bitmap:

    FileOutputStream outputStream = new FileOutputStream(fileUri);

    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, outputStream);

    outputStream.flush();

    outputStream.close();

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