Java tutorial
//package com.java2s; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; import android.graphics.Bitmap; public class Main { public static void saveThumbnail(String filePath, Bitmap bitmap) { ByteArrayOutputStream bytes = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bytes); // you can create a new file name "test.jpg" in sdcard folder. File f = new File(filePath); try { f.createNewFile(); // write the bytes in file FileOutputStream fo = new FileOutputStream(f); fo.write(bytes.toByteArray()); } catch (IOException e) { e.printStackTrace(); } } }