Java tutorial
//package com.java2s; import java.io.ByteArrayOutputStream; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import android.content.Context; import android.util.Log; public class Main { public static String readInStream(InputStream inStream) { try { ByteArrayOutputStream outStream = new ByteArrayOutputStream(); byte[] buffer = new byte[512]; int length = -1; while ((length = inStream.read(buffer)) != -1) { outStream.write(buffer, 0, length); } outStream.close(); inStream.close(); return outStream.toString(); } catch (IOException e) { Log.i("FileTest", e.getMessage()); } return null; } public static String read(Context context, String fileName) { try { FileInputStream in = context.openFileInput(fileName); return readInStream(in); } catch (Exception e) { e.printStackTrace(); } return ""; } public static void write(Context context, String fileName, String content) { if (content == null) content = ""; try { FileOutputStream fos = context.openFileOutput(fileName, Context.MODE_PRIVATE); fos.write(content.getBytes()); fos.close(); } catch (Exception e) { e.printStackTrace(); } } }