//assume that variable b is Bitmap instance
String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
OutputStream outStream = null;
File file = new File(extStorageDirectory, "er.PNG");
try {
outStream = new FileOutputStream(file);
b.compress(Bitmap.CompressFormat.PNG, 100, outStream);
outStream.flush();
outStream.close();
}
catch(Exception e)
{}
Reference : http://stackoverflow.com/questions/649154/android-bitmap-save-to-location
