保存Bitmap到SD卡

/** * 保存图片到SD卡(如果有SD卡的话) * @param mId */private void saveMerchandiseImgToSD(int mId,String imageName){FileOutputStream fos = null;Bitmap b = PublicMethod.getMerchandiseImage(mId);try {fos = new FileOutputStream("/sdcard/Discount/" + imageName + ".jpg");if (fos != null) {b.compress(Bitmap.CompressFormat.JPEG, 90, fos);fos.close();}} catch (Exception e) {e.printStackTrace();}}