Question

我现在遇到一个奇怪的问题。我一直在尝试将图像从我的Android应用程序上传到服务器，但是当我使用wifi连接时它工作正常但是当我在GPRS上时，应用程序只是继续处理无限的时间。以下是代码：

    try
    {
        Log.i(TAG,"publishFileToServer Called...");
        FileInputStream fileInputStream = new FileInputStream(new File(filePath) );
        URL url = new URL(urlServer);
        System.setProperty("http.keepAlive", "false");
        connection = (HttpURLConnection) url.openConnection();
        Log.i(TAG,"publishFileToServer Called... 1");
        // Allow Inputs & Outputs
        connection.setDoInput(true);
        connection.setDoOutput(true);
        connection.setUseCaches(false);
        Log.i(TAG,"publishFileToServer Called... 2");
        // Enable POST method
        connection.setRequestMethod("POST");
        connection.setRequestProperty("Connection", "Keep-Alive");
        connection.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);
        Log.i(TAG,"publishFileToServer Called...3");
        outputStream = new DataOutputStream( connection.getOutputStream() );
        outputStream.writeBytes(twoHyphens + boundary + lineEnd);
        outputStream.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + filePath +"\"" + lineEnd);
        outputStream.writeBytes(lineEnd);
        Log.i(TAG,"publishFileToServer Called...4");
        bytesAvailable = fileInputStream.available();
        bufferSize = Math.min(bytesAvailable, maxBufferSize);
        buffer = new byte[bufferSize];
        Log.i(TAG,"publishFileToServer Called...5");
        // Read file
        bytesRead = fileInputStream.read(buffer, 0, bufferSize);
        Log.i(TAG,"publishFileToServer Called...6");
        while (bytesRead > 0)
        {
            outputStream.write(buffer, 0, bufferSize);
            bytesAvailable = fileInputStream.available();
            bufferSize = Math.min(bytesAvailable, maxBufferSize);
            bytesRead = fileInputStream.read(buffer, 0, bufferSize);
        }
        Log.i(TAG,"publishFileToServer Called...7");
        outputStream.writeBytes(lineEnd);
        outputStream.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
        Log.i(TAG,"publishFileToServer Called...8");
        // Responses from the server (code and message)
        int serverResponseCode = connection.getResponseCode();
        Log.i(TAG,"publishFileToServer: ServerResponseCode = "+serverResponseCode);
        String serverResponseMessage = connection.getResponseMessage();
        Log.i(TAG,"publishFileToServer: ServerResponseMessage = "+serverResponseMessage);
        Log.i(TAG,"publishFileToServer Called...9");
        fileInputStream.close();
        outputStream.flush();
        outputStream.close();
        Log.i(TAG,"publishFileToServer Called...10");
    }
    catch (Exception ex)
    {
        Log.e(TAG,"publishFileToServer: "+ex.getMessage());
    }

值得注意的是，我使用相同的代码上传文本文件，即使在GPRS上工作正常，我也试图缩小范围，我的应用程序在我上传时就在getResponse（）方法之前解决了问题一个图像。

Answer 1

你是从活动中做到这一点吗？

使用服务并将其放入AsyncTask

使用wifi，几乎没有延迟。使用单元网络时，存在大量延迟，因此您的请求很可能会阻止ui线程。

Answer 2

显然，重新安装sdk后问题就消失了。

在android上映像上传

2 个答案: