//Base64編碼地址(地址太長，省略)
    String base64String = "data:image/jpeg;base64,/9j/4AAQSkZJRgA...........";
    //將Base64編碼字符串解碼成Bitmap
    byte[] decodedString = Base64.decode(base64String.split(",")[1], Base64.DEFAULT);
    Bitmap decodedByte = BitmapFactory.decodeByteArray(decodedString, 0, decodedString.length);
    //設置ImageView圖片
        imageView.setImageBitmap(decodedByte);

public String encodeImageToString(Bitmap bitmap) {
    ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
    //讀取圖片到ByteArrayOutputStream
    bitmap.compress(Bitmap.CompressFormat.PNG, 40, outputStream); //參數(shù)如果為100那么就不壓縮
    byte[] bytes = outputStream.toByteArray();
    String strImg = Base64.encodeToString(bytes, Base64.DEFAULT);
    return strImg;
    }

  public Bitmap sendImage(String imgAddress) {
    byte[] input = Base64.decode(imgAddress, Base64.DEFAULT);
    Bitmap bitmap = BitmapFactory.decodeByteArray(input, 0, input.length);
    return bitmap;
    }