Android

Question

我正在尝试将sd卡上的mp4文件上传到远程服务器。上传成功，但是当我尝试使用VideoView通过网址播放该文件时，它显示＆＃34;无法播放此视频＆＃34;。这个问题只发生在使用手机拍摄的视频中，假设我是从watsapp文件夹上传视频，一切正常，没有任何问题。上传前我需要进行任何压缩吗？ 以下是我用于上传视频的代码

 try {
                    FileInputStream fileInputStream = new FileInputStream(sourceFile);
                    URL url = new URL(my url for upload);
                    conn = (HttpURLConnection) url.openConnection();
                    conn.setDoInput(true);
                    conn.setDoOutput(true);
                    conn.setUseCaches(false);
                    conn.setRequestMethod("POST");
                    conn.setRequestProperty("Connection", "Keep-Alive");
                    conn.setRequestProperty("ENCTYPE", "multipart/form-data");
                    conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);
                    conn.setRequestProperty("myFile", fileName);
                    video_name = fileName;
                    video_name = fileName.substring(fileName.lastIndexOf("/")+1);
                    dos = new DataOutputStream(conn.getOutputStream());

                    dos.writeBytes(twoHyphens + boundary + lineEnd);
                    dos.writeBytes("Content-Disposition: form-data; name=\"myFile\";filename=\"" + fileName + "\"" + lineEnd);
                    dos.writeBytes(lineEnd);

                    bytesAvailable = fileInputStream.available();
                    Log.i("ava", "Initial .available : " + bytesAvailable);

                    bufferSize = Math.min(bytesAvailable, maxBufferSize);
                    buffer = new byte[bufferSize];

                    bytesRead = fileInputStream.read(buffer, 0, bufferSize);

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

                    dos.writeBytes(lineEnd);
                    dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

                    serverResponseCode = conn.getResponseCode();
                    Content = conn.getResponseMessage();

                    fileInputStream.close();
                    dos.flush();
                    dos.close();
                } catch (MalformedURLException ex) {
                    ex.printStackTrace();
                } catch (Exception e) {
                    e.printStackTrace();
                }

Answer 1

是的，可能是因为您的网址包含空格，因此您需要删除空格并设置

  

20％

像白色空间一样：

  

网址url1 =新网址（your_url.trim（）。replace（“”，“％20”））;

希望它适合你

Answer 2

try {
            // Start the MediaController
            MediaController mediacontroller = new MediaController(
                    PlayVideoActivity.this);
            mediacontroller.setAnchorView(videoview);
            // Get the URL from String VideoURL
            Uri video = Uri.parse(VideoURL);
            videoview.setMediaController(mediacontroller);
            videoview.setVideoURI(video);

        } catch (Exception e) {
            Log.e("Error", e.getMessage());
            e.printStackTrace();
        }
        videoview.requestFocus();
        videoview.setOnPreparedListener(new MediaPlayer.OnPreparedListener() {
            // Close the progress bar and play the video
            public void onPrepared(MediaPlayer mp) {
                pgDialog.dismiss();
                videoview.start();
            }
        });