使用多部分上傳圖像時如何在客戶端獲取過程

Question

我正在一個需要使用Multipart上傳圖像的項目。 這是我的代碼：

public void doUploadGIF(File image) {

        try {
            long start = System.currentTimeMillis();
            HttpPost httppost = new HttpPost(
                    "myurl");
            MultipartEntity multipartEntity = new MultipartEntity(
                    HttpMultipartMode.BROWSER_COMPATIBLE);

            multipartEntity.addPart("gif", new FileBody(image));
            httppost.setEntity(multipartEntity);

            mHttpClient.execute(httppost, new PhotoUploadResponseHandler());

            long end = System.currentTimeMillis();
            System.out.println("Time for uploading:"
                    + String.valueOf(end - start));
        } catch (Exception e) {
            Log.e("Upload", "Error while uploading");
        }
    }

private class PhotoUploadResponseHandler implements ResponseHandler<Object> {

        @Override
        public Object handleResponse(HttpResponse response)
                throws ClientProtocolException, IOException {

            HttpEntity r_entity = response.getEntity();
            String responseString = EntityUtils.toString(r_entity); 
            Log.d("UPLOAD", responseString);

            return null;
        }

    }

現在，在客戶端（Android）中，我讓用戶知道了上傳過程（percent）。 我怎樣才能做到這一點？ 感謝您的關注 ！

Answer 1

在我的情況下，我以KB為單位使用文件大小，並以KB為單位設置進度條的限制。 和更新進度條，我用：

int bufferLength = 1024;

File file = new File(ImgURI);
mFileLen =  file.length();

int maxBufferSize = 1*1024*1024;

bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);

for (int i = 0; i < bufferSize; i +=bufferLength) {
    progress = i/1024;
    progressBar1.setMax(kbfilesize);
    publishProgress(progress);
}