private static final String FILE_FOLDER =  Environment.getExternalStorageDirectory().getAbsolutePath()  + File.separator + "AboutView" + File.separator + "data";private static final String FILE_CSV = "about_data.csv";

class WriteData2CSVThread extends Thread {  short[] data;  String fileName;  String folder;  StringBuilder sb;  public WriteData2CSVThread(short[] data, String folder, String fileName) {   this.data = data;   this.folder = folder;   this.fileName = fileName;  }  private void createFolder() {   File fileDir = new File(folder);   boolean hasDir = fileDir.exists();   if (!hasDir) {    fileDir.mkdirs();// 這里創(chuàng)建的是目錄   }  }  @Override  public void run() {   super.run();   createFolder();   File eFile = new File(folder + File.separator + fileName);   if (!eFile.exists()) {    try {     boolean newFile = eFile.createNewFile();    } catch (IOException e) {     e.printStackTrace();    }   }   try {    FileOutputStream os = new FileOutputStream(eFile, true);    sb = new StringBuilder();    for (int i = 0; i < data.length; i++) {     sb.append(data[i]).append(",");    }    sb.append("/n");    os.write(sb.toString().getBytes());    os.flush();    os.close();   } catch (Exception e) {    e.printStackTrace();   }  } }

class ReadCSVThread extends Thread {  String fileName;  String folder;  public ReadCSVThread(String folder, String fileName) {   this.folder = folder;   this.fileName = fileName;  }  @Override  public void run() {   super.run();   File inFile = new File(folder + File.separator + fileName);   final StringBuilder cSb = new StringBuilder();   String inString;   try {    BufferedReader reader =     new BufferedReader(new FileReader(inFile));    while ((inString = reader.readLine()) != null) {     cSb.append(inString).append("/n");    }    reader.close();   } catch (Exception e) {    e.printStackTrace();   }   runOnUiThread(new Runnable() {    @Override    public void run() {     mCSVTv.setText(cSb.toString());// 顯示    }   });  } }