Java tutorial
//package com.java2s; import android.graphics.Bitmap; import java.io.FileOutputStream; import java.io.IOException; public class Main { public static void writeBitMap(Bitmap bmp) { FileOutputStream out = null; try { out = new FileOutputStream("/sdcard/test.png"); bmp.compress(Bitmap.CompressFormat.PNG, 100, out); // bmp is your Bitmap instance // PNG is a lossless format, the compression factor (100) is ignored } catch (Exception e) { e.printStackTrace(); } finally { try { if (out != null) { out.close(); } } catch (IOException e) { e.printStackTrace(); } } } }