public static String getCRC32(String fileUri) {
		CRC32 crc32 = new CRC32();
		FileInputStream fileinputstream = null;
		CheckedInputStream checkedinputstream = null;
		String crc = null;
		try {
			fileinputstream = new FileInputStream(new File(fileUri));
			checkedinputstream = new CheckedInputStream(fileinputstream, crc32);
			while (checkedinputstream.read() != -1) {
			}
			crc = Long.toHexString(crc32.getValue()).toUpperCase();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (fileinputstream != null) {
				try {
					fileinputstream.close();
				} catch (IOException e2) {
					e2.printStackTrace();
				}
			}
			if (checkedinputstream != null) {
				try {
					checkedinputstream.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
		return crc;
	}