out of memory happened on showing sticker on imageview : a list of images and stickers(webp format)  must be shown on a recycleview.

 to show sticker on imageView, this [repository] (https://github.com/EverythingMe/webp-android) is used. this repository was one of suggested 
solution on this post(http://stackoverflow.com/questions/7032695/webp-for-android)

sticker file is read from external storage, convert to byte array, by using library of the repository, byte array convert to bitmap, and finally bitmap is shown on imageView. below code convert sticker file to bitmap

    private void ShowStickerOnImageView(String stickerPath){
	File file = new File(stickerPath);
	int size = (int) file.length();
	byte[] bytes = new byte[size];

	BufferedInputStream buf = new BufferedInputStream(new FileInputStream(file));
	buf.read(bytes, 0, bytes.length);
	buf.close();

	Bitmap bitmap = null;
	boolean NATIVE_WEB_P_SUPPORT = Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR2;
	if (!NATIVE_WEB_P_SUPPORT) {
		bitmap = WebPDecoder.getInstance().decodeWebP(bytes);
	} else {
		bitmap = BitmapFactory.decodeByteArray(bytes, 0, bytes.length);
	}

	holder.imageView.setImageBitmap(bitmap);
    }

    .....

    public Bitmap decodeWebP(byte[] encoded, int w, int h) {
	int[] width = new int[]{w};
	int[] height = new int[]{h};

	byte[] decoded = decodeRGBAnative(encoded, encoded.length, width, height);
	if (decoded.length == 0) return null;

	int[] pixels = new int[decoded.length / 4];
	ByteBuffer.wrap(decoded).asIntBuffer().get(pixels);

	return Bitmap.createBitmap(pixels, width[0], height[0], Bitmap.Config.ARGB_8888);
    }

when 'NATIVE_WEB_P_SUPPORT' is false, 'decodeWebP' method is called, this method work fine in most of the time, but sometimes 'out of memory' error is happened on this method. most of the time, this error is happened on these lines

    int[] pixels = new int[decoded.length / 4];
	ByteBuffer.wrap(decoded).asIntBuffer().get(pixels);
	return Bitmap.createBitmap(pixels, width[0], height[0], Bitmap.Config.ARGB_8888);

i found that byte array length of sticker file is big , can i decrease sticker file size programmatically? i want to find  solution, to decrease byte array size.