其实就是用java的IO流去读取文件
public static String ReadTxtFile(String strFilePath) {String path = strFilePath;String gpioValue = "";//打开文件 File file = new File(path);//如果path是传递过来的参数，可以做一个非目录的判断 if (file.isDirectory()) {Log.d(TAG, "这个目录不存在");} else {try {InputStream instream = new FileInputStream(file);if (instream != null){InputStreamReader inputreader = new InputStreamReader(instream);BufferedReader buffreader = new BufferedReader(inputreader);String line;//分行读取 while ((line = buffreader.readLine()) != null) {gpioValue = line;}Log.i("gpioValue-----------", gpioValue + "==============");instream.close();}} catch (java.io.FileNotFoundException e) {Log.d(TAG, "文件目录异常或不存在");} catch (IOException e) {Log.d(TAG, e.getMessage());}}return gpioValue;
}