嗨，喜欢这样。
package com.my.CSVcreation;import java.io.File;import java.io.FileWriter;import java.io.IOException;import android.app.Activity;import android.app.ProgressDialog;import android.content.Context;import android.database.Cursor;import android.database.SQLException;import android.database.sqlite.SQLiteDatabase;import android.os.AsyncTask;import android.os.Bundle;import android.os.Environment;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.TextView;import android.widget.Toast;public class CSVCreationActivity extends Activity { TextView empidtxt,empnametxt,empsaltxt; EditText empidet,empnameet,empsalet; Button insetbt,viewbt; SQLiteDatabase myDatabase=null; String Database_Name="employeedata"; String Table_Name="employeedetails"; Cursor c1,c2; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); empidtxt=(TextView)findViewById(R.id.tv1); empnametxt=(TextView)findViewById(R.id.tv2); empsaltxt=(TextView)findViewById(R.id.tv3); empidet=(EditText)findViewById(R.id.et1); empnameet=(EditText)findViewById(R.id.et2); empsalet=(EditText)findViewById(R.id.et3); insetbt=(Button)findViewById(R.id.bt1); viewbt=(Button)findViewById(R.id.bt2); try { myDatabase=this.openOrCreateDatabase(Database_Name, MODE_PRIVATE, null); System.out.println("databse has been creates....."); myDatabase.execSQL("create table if not exists " + Table_Name + "(empid integer(10),empname varchar(50),empsal integer(10))"); System.out.println("table has been created....."); c1 = myDatabase.rawQuery("select * from " + Table_Name, null); c1.moveToFirst(); int count1 = c1.getCount(); System.out.println("columns --->" + count1); if (count1 == 0) { myDatabase.execSQL("insert into "+Table_Name+ "(empid,empname,empsal)" +"values(101,'asha',20000)"); System.out.println("data base has been inserted....."); } c2 = myDatabase.rawQuery("select * from " + Table_Name, null); c2.moveToFirst(); int count2 = c2.getCount(); System.out.println("columns --->" + count2); final int column1 = c2.getColumnIndex("empid"); final int column2 = c2.getColumnIndex("empname"); final int column3 = c2.getColumnIndex("empsal"); insetbt.setonClickListener(new View.onClickListener() { @Override public void onClick(View v) { if (c2 != null) { do { int id = c2.getInt(column1); String name = c2.getString(column2); int salary = c2.getInt(column3); System.out.println("empID --> "+id); System.out.println("empNAME --> "+name); System.out.println("empsalalry --> "+salary); } while(c2.moveTonext()); } } }); viewbt.setonClickListener(new View.onClickListener() { @Override public void onClick(View v) { try { new ExportDatabaseCSVTask().execute(""); } catch(Exception ex) { Log.e("Error in MainActivity",ex.toString()); } } }); } catch(SQLException ex) { ex.printStackTrace(); } }public class ExportDatabaseCSVTask extends AsyncTask<String, Void, Boolean> { private final ProgressDialog dialog = new ProgressDialog(CSVCreationActivity.this); @Override protected void onPreExecute() { this.dialog.setMessage("Exporting database..."); this.dialog.show(); } protected Boolean doInBackground(final String... args) { File dbFile = getDatabasePath("myDatabase.db"); System.out.println(dbFile); // displays the data base path in your logcat File exportDir = new File(Environment.getExternalStorageDirectory(), ""); if (!exportDir.exists()) { exportDir.mkdirs(); } File file = new File(exportDir, "myfile.csv"); try { file.createNewFile(); CSVWriter csvWrite = new CSVWriter(new FileWriter(file)); Cursor curCSV = myDatabase.rawQuery("select * from " + Table_Name,null); csvWrite.writeNext(curCSV.getColumnNames()); while(curCSV.moveTonext()) { String arrStr[] ={curCSV.getString(0),curCSV.getString(1),curCSV.getString(2)}; // curCSV.getString(3),curCSV.getString(4)}; csvWrite.writeNext(arrStr); } csvWrite.close(); curCSV.close(); return true; } catch(SQLException sqlEx) { Log.e("MainActivity", sqlEx.getMessage(), sqlEx); return false; } catch (IOException e) { Log.e("MainActivity", e.getMessage(), e); return false; } } protected void onPostExecute(final Boolean success) { if (this.dialog.isShowing()) { this.dialog.dismiss(); } if (success) { Toast.makeText(CSVCreationActivity.this, "Export successful!", Toast.LENGTH_SHORT).show(); } else { Toast.makeText(CSVCreationActivity.this, "Export failed", Toast.LENGTH_SHORT).show(); } }}然后，您将从以下站点https://pre.google.com/p/secrets-for-
android/source/checkout获得CSVReader和CSVWriter文件。祝一切顺利。
不要忘记为清单文件添加权限
<uses-permissionandroid:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
