java – Base64编码在Android中占用太长时间

我想将图像保存在Base64字符串中并将其放在HashMap上,然后将其放入XML文件中.

protected Void doInBackground(Void...voids) {
        options.inJustDecodeBounds = false;
        //Bitmap bmp = BitmapFactory.decodeFile(imageFilePath,options);
        InputStream in = null;
        try {
            in = getContentResolver().openInputStream(Uri.parse(mCurrentPhotoPath));
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        }
        options.inSampleSize = 2;
        Bitmap image = BitmapFactory.decodeStream(in,null,options);
        int imgHeight = image.getHeight();
        int imgWidth = image.getWidth();
        while(imgHeight>2000){
            imgHeight = imgHeight / 2;
        }
        while(imgWidth>2000){
            imgWidth = imgWidth / 2;
        }

        Bitmap test = Bitmap.createScaledBitmap(image,imgWidth,imgHeight,false);

        String stest = base64EncodeDecode.encodeToBase64(test);


        items.put("image",base64EncodeDecode.encodeToBase64(test);
        return null;
}

Base64需要很长时间才能对其进行编码.
encodeToBase64方法

public String encodeToBase64(Bitmap image) {
    ByteArrayOutputStream baos = new ByteArrayOutputStream();
    image.compress(Bitmap.CompressFormat.JPEG,100,baos);
    byte[] b = baos.toByteArray();

    return Base64.encodeToString(b,Base64.DEFAULT);
}

你能告诉我在编码时是否做错了吗？

我希望我的问题很清楚.

亲切的问候！