bitmap与字符串的相互转换

Bitmap to String:
public String BitMapToString(Bitmap bitmap){
            ByteArrayOutputStream baos=new  ByteArrayOutputStream();
            bitmap.compress(Bitmap.CompressFormat.PNG,100, baos);
            byte [] arr=baos.toByteArray();
            String result=Base64.encodeToString(arr, Base64.DEFAULT);
            return result;
      }


String to Bitmap:
public Bitmap StringToBitMap(String image){
       try{
           byte [] encodeByte=Base64.decode(image,Base64.DEFAULT);
           Bitmap bitmap=BitmapFactory.decodeByteArray(encodeByte, 0, encodeByte.length);
           return bitmap;
         }catch(Exception e){
           e.getMessage();
          return null;
         }
 }