/**         * 将asseet当中的数据库文件拷到程序目录         * @param activity        当前Activity         * @param filePath        你的程序目录        getApplicationContext().getFilesDir().getAbsolutePath();         * @param fileName        你的数据库名称         */        public static void copyEmbassy2Databases(Activity activity, String filePath, String fileName) {                System.out.println("-->copyEmbassy2Databases");                File oldfile = new File(filePath, fileName);                if (oldfile.exists())                        oldfile.delete();                File file = new File(filePath, fileName);                if (file.exists())                        return;                file.getParentFile().mkdirs();                InputStream in = null;                OutputStream out = null;                try {                        out = new FileOutputStream(file);                        byte[] buff = new byte[1024];                        int len = 0;                        in = activity.getAssets().open(fileName);                        while ((len = in.read(buff)) > 0) {                                out.write(buff, 0, len);                        }                        out.flush();                        in.close();                } catch (IOException e) {                        e.printStackTrace();                } finally {                        try {                                if (out != null)                                        out.close();                        } catch (IOException e) {                                e.printStackTrace();                        }                }        }