File Utils For Gboard edittext extension keyboard

FileUtils.java

class FileUtils{

 @NotNull
    public static File buildImageKeyboardSupportUri(@Nullable String extension) {
        final long fileId = System.currentTimeMillis();
        String filePath = Environment.getExternalStorageDirectory().toString() +
                "/keyboardImage/.shared/iks" + String.valueOf(fileId) +
                (android.text.TextUtils.isEmpty(extension) ? "" : ("." + extension));
        checkAndCreateDir(filePath);
        return new File(filePath);
    }

    public static boolean checkAndCreateDir(String filePath) {
        File tmp = new File(filePath);
        File parentFile = tmp.getParentFile();

        if (!parentFile.exists() && !parentFile.mkdirs()) {
            return false;
        }
        return true;

    }
    
    public static void copyFile(String fileFromPath, String fileToPath)
            throws Exception {
        InputStream in = null;
        OutputStream out = null;

        File f = new File(fileToPath);
        if (!f.getParentFile().exists()) {
            f.getParentFile().mkdirs();
        }

        int bufferSize = 8196;
        try {
            in = new FileInputStream(fileFromPath);
            out = new FileOutputStream(fileToPath);

            int bytesRead = 0;
            byte[] buffer = new byte[bufferSize];
            while ((bytesRead = in.read(buffer, 0, bufferSize)) != -1) {
                out.write(buffer, 0, bytesRead);
            }
        } finally {
            if (in != null)
                in.close();
            if (out != null)
                out.close();
        }
    }


}