How to convert string to bitmap and Bitmap to string

In android, Normally we send and receive data in the form of

string.So if we have image in the Bitmap form then we can       

not send it to server.So here i made a simple function that you need pass bitmap and it will return a string

     /**
       * @param bitmap
       * @return converting bitmap and return a string
       */
       public String BitMapToString(Bitmap bitmap){
            ByteArrayOutputStream baos=new  ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG,100, baos);
            byte [] b=baos.toByteArray();
            String temp=Base64.encodeToString(b, Base64.DEFAULT);
            return temp;
      }

Here is the reverse procedure for converting string to bitmap but string should Base64 encoding

      /**
       *
       * @param encodedString
       * @return bitmap (from given string)
       */
      public Bitmap StringToBitMap(String encodedString){
     try{
       byte [] encodeByte=Base64.decode(encodedString,Base64.DEFAULT);
       Bitmap bitmap=BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length);
       return bitmap;
     }catch(Exception e){
       e.getMessage();
       return null;
     }
      }

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