gistfile1.java

	private void combineDevidedFiles(String destination, String devidedFilePrefix) {
		File destFile = new File(destination);
		destFile.mkdirs();
		destination += devidedFilePrefix;
		destFile = new File(destination);
		InputStream input = null;
			
		try {
			AssetManager assetManager = context.getAssets();
			OutputStream output = new FileOutputStream(destFile);

			for (int i=1;i<=FILE_DIVIDED_NUM;i++) {
				input = assetManager.open(DEVIDED_FILE_PREFIX + String.valueOf(i), AssetManager.ACCESS_STREAMING);
				byte[] buf = new byte[DEFAULT_BUFFER_SIZE];
				int size;
				while (true) {
					size = input.read(buf);
					if (size <= 0) {
						break;
					}
					output.write(buf, 0, size);
				}
				input.close();
			}
			output.close();
		} catch (Exception e) {
			destFile.delete();
			Log.w(TAG, e.getMessage());
		}
	}