android - dalvikvm-heap 在上传视频 android 时增长堆( fragment 情况)

Question

我在从 4x 设备上传视频时遇到问题。我知道只有 15 秒的视频录制会在 samsung S2 中创建一个 30 mb 的文件，但是当我尝试先将视频上传到 php 服务器时，它显示了消息喜欢 D/dalvikvm(7638):GC_FOR_ALLOC 释放 263K，9% 释放 12838K/14087K，暂停 13ms，总计 13ms I/dalvikvm-heap(7638):将堆( fragment 情况)增加到 14.481MB，分配 1048592 字节 D/dalvikvm(7638): GC_FOR_ALLOC freed <1K, 9% free 13861K/15175K, paused 22ms, total 22ms D/dalvikvm(7638): GC_CONCURRENT freed <1K, 9% free 13862K/15175K, paused 12ms+2ms, total 27ms

I know it is the memory managment concept and device memory dependent but I want a real solution for it as I am stuck here from quite a few days.
Below is my code to call and upload the video to server.

public void newmethod( String Imageurl ) throws ClientProtocolException, IOException
{
    byte[] data ; 
    int bytenumber,bufferSize,bytesRead;
    int maxBufferSize = 1*1024*1024;
      DataOutputStream dos = null;
     //File sourceFile =  searchForFileInExternalStorage("video.3gp");

     Log.e("in the method the path", ""+Imageurl);

      FileInputStream fileInputStream = new FileInputStream(Imageurl);
      bytenumber = fileInputStream.available();
      Log.e("in the method the the size of the file is", ""+bytenumber);
     // dos = new DataOutputStream(conn.getOutputStream());
      bufferSize = Math.min(bytenumber, maxBufferSize);
      data = new byte[bufferSize];
     //ProgressDialog pr = new ProgressDialog(getApplicationContext());
    // pr.addContentView(getCurrentFocus(), null);
       // read file and write it into form...
       bytesRead = fileInputStream.read(data, 0, bufferSize);

       while (bytesRead > 0) {
       // dos.write(data, 0, bufferSize);
        bytenumber = fileInputStream.available();
         bufferSize = Math.min(bytenumber, maxBufferSize);
        bytesRead = fileInputStream.read(data, 0, bufferSize);
        }

     // pr.show();


    HttpClient httpClient = new DefaultHttpClient();
    HttpPost postRequest = new HttpPost("http://67.52.165.116/Kakz/mobiles/uploadvideo");
    ByteArrayBody bab = new ByteArrayBody( data, Imageurl);
    MultipartEntity reqEntity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE);
    reqEntity.addPart("user_video", bab);

    FormBodyPart bodyPart=new FormBodyPart("title", new StringBody(title));
    reqEntity.addPart(bodyPart);
    bodyPart=new FormBodyPart("desc", new StringBody(description));
    reqEntity.addPart(bodyPart);
    bodyPart=new FormBodyPart("source", new StringBody("android"));
    reqEntity.addPart(bodyPart); 
    postRequest.setEntity(reqEntity);
    final HttpResponse response = httpClient.execute(postRequest);
    // FileInputStream fileInputStream = new FileInputStream(response.getEntity().getContent());


    runOnUiThread(new Runnable() {
         public void run() {

    //stuff that updates ui

             BufferedReader in = null;
            try {
                in = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

            } catch (IllegalStateException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            } catch (IOException e1) {
                // TODO Auto-generated catch block
                e1.printStackTrace();
            }
                String line = null;

    try {
        while((line = in.readLine()) != null) {
            System.out.println(line);

            titleText.setText("");
            descriptionText.setText("");
          //  Toast.makeText(getApplicationContext(), "Video Uploaded successfully", Toast.LENGTH_LONG).show();

            if (line.equalsIgnoreCase("Its too Heavy")) {
            //  pr.dismiss();
                // titleText.setText("");
                //descriptionText.setText("");
                Toast.makeText(getApplicationContext(), "Video size is too heavy", Toast.LENGTH_LONG).show();

            }

            else if (line.equalsIgnoreCase("Error")) {
            //  pr.dismiss();
                // titleText.setText("");
                //descriptionText.setText("");
                Toast.makeText(getApplicationContext(), "Error uploading video", Toast.LENGTH_LONG).show();


            }

            else  if (line.equalsIgnoreCase("Uploaded")) {
                //pr.dismiss();
                 //titleText.setText("");
                //descriptionText.setText("");
                Toast.makeText(getApplicationContext(), "Video uploaded successfully", Toast.LENGTH_LONG).show();

            }

        }
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }
         }
});

Please let me know that how I should manage the code to get it right.
Any help would be appreciated ASAP`enter code here`

Answer 1

I am facing problem whiel uploading the video from the 4x devices.

这不是问题。当您执行成本非常高的操作时，这是正常行为。您的堆大小(隐式确定)暂时不够用，因此需要增大。你应该如何写入 list 是平等的行为

android:largeHeap="true"

此属性无效。当堆需要更多大小时，会自行增长 - 当需要时。当您没有太多内存时，通常会显示此消息。

GC_FOR_ALLOC freed 263K, 9% free 12838K/14087K, paused 13ms, total 13ms I/dalvikvm-heap(7638)

这里你只有 9% 的内存，堆需要增加。通常它发生在 ALLOC 小于 10% 的时候，不管你是否使用 Thread，一旦它是一个高成本的操作。当您的堆大小达到一个“临界点”时，出于安全原因以及 VM，应用程序将自动停止。

一种可能的解决方案是，您需要将文件分成更小的 block ，然后一个一个地上传。