Java tutorial
//package com.java2s; import java.io.File; import java.io.FileWriter; import java.io.IOException; import android.util.Log; public class Main { public static boolean writeOneLine(String fname, String value) { if (!new File(fname).exists()) { return false; } try { FileWriter fw = new FileWriter(fname); try { fw.write(value); } finally { fw.close(); } } catch (IOException e) { String Error = "Error writing to " + fname + ". Exception: "; Log.e("TAG", Error, e); return false; } return true; } }