前言
本文主要给大家介绍的是关于Android读写CSV文件的相关内容，CSV也就是Comma-Separated Values逗号分隔的文本文件，
读写csv文件和读写普通文件类似；写的时候给数据之间添加上逗号。
设定存储路径和文件名：
private static final String FILE_FOLDER = Environment.getExternalStorageDirectory().getAbsolutePath() + File.separator + "AboutView" + File.separator + "data"; private static final String FILE_CSV = "about_data.csv";
写CSV文件
使用FileOutputStream来向文件尾部添加数据
FileOutputStream.write(byte[] data)向文件流写入字节数据。
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();// 这里创建的是目录 } } @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(); } } }
读CSV文件
使用BufferedReader读取每一行内容；读出来的数据带有逗号分隔符
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());// 显示 } }); } }
总结
以上就是这篇文章的全部内容了，希望本文的内容对大家的学习或者工作能带来一定的帮助，如果有疑问大家可以留言交流，谢谢大家对脚本之家的支持。