Bitmap logoBitmap = BitmapFactory.decodeResource(mcontext.getResources(), R.drawable.arcnote_logo);ByteArrayOutputStream logoStream = new ByteArrayOutputStream();boolean res = logoBitmap.compress(Bitmap.CompressFormat.PNG,100,logoStream);//將圖像讀取到logoStream中byte[] logoBuf = logoStream.toByteArray();//將圖像保存到byte[]中Bitmap temp = BitmapFactory.decodeByteArray(logoBuf,0,logoBuf.length);//將圖像從byte[]中讀取生成Bitmap 對象 tempsaveMyBitmap("tttt",temp);//將圖像保存到SD卡中public void saveMyBitmap(String bitName,Bitmap mBitmap){ File f = new File("/sdcard/" + bitName + ".png"); try {  f.createNewFile(); } catch (IOException e) {  // TODO Auto-generated catch block } FileOutputStream fOut = null; try {  fOut = new FileOutputStream(f); } catch (Exception e) {  e.printStackTrace(); } mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut); try {  fOut.flush(); } catch (IOException e) {  e.printStackTrace(); } try {  fOut.close(); } catch (IOException e) {  e.printStackTrace(); }}