Android獲取系統內核版本的方法

看網上關於這個問題的帖子挺少的，和大家分享一下。

    public static String getKernelVersion() {
        String kernelVersion = "";
        InputStream inputStream = null;
        try {
            inputStream = new FileInputStream("/proc/version");
        } catch (FileNotFoundException e) {
            e.printStackTrace();
            return kernelVersion;
        }
        BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(inputStream), 8 * 1024);
        String info = "";
        String line = "";
        try {
            while ((line = bufferedReader.readLine()) != null) {
                info += line;
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                bufferedReader.close();
                inputStream.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        try {
            if (info != "") {
                final String keyword = "version ";
                int index = info.indexOf(keyword);
                line = info.substring(index + keyword.length());
                index = line.indexOf(" ");
                kernelVersion = line.substring(0, index);
            }
        } catch (IndexOutOfBoundsException e) {
            e.printStackTrace();
        }

        return kernelVersion;
    }