从SD卡中打开，保存图片

打开图片，SDPATH为图片路径

   BitmapFactory.Options options = new BitmapFactory.Options();   options.inSampleSize = 1;       bitmap= BitmapFactory.decodeFile(SDPATH, options);       imageView.setImageBitmap(bitmap); 

保存图片，bm1为要保存的Bitmap

 try {  FileOutputStream out = new FileOutputStream(SDPATH);         bm1.compress(Bitmap.CompressFormat.PNG, 0, out);        }   catch(Exception e)        {        e.printStackTrace();        }