1 /** 2      * 图片转成string 3      *  4      * @param bitmap 5      * @return 6      */ 7     public static String convertIconToString(Bitmap bitmap) 8     { 9         ByteArrayOutputStream baos = new ByteArrayOutputStream();// outputstream10         bitmap.compress(CompressFormat.PNG, 100, baos);11         byte[] appicon = baos.toByteArray();// 转为byte数组12         return Base64.encodeToString(appicon, Base64.DEFAULT);13 14     }15 16     /**17      * string转成bitmap18      * 19      * @param st20      */21     public static Bitmap convertStringToIcon(String st)22     {23         // OutputStream out;24         Bitmap bitmap = null;25         try26         {27             // out = new FileOutputStream("/sdcard/aa.jpg");28             byte[] bitmapArray;29             bitmapArray = Base64.decode(st, Base64.DEFAULT);30             bitmap =31                     BitmapFactory.decodeByteArray(bitmapArray, 0,32                             bitmapArray.length);33             // bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);34             return bitmap;35         }36         catch (Exception e)37         {38             return null;39         }40     }