如何在通知区域显示进度栏? [英] How to show the progress bar in notification area?

问题描述

我Iam做了一个Android应用程序，其中IAM将视频上传到PHP服务器.
Iam使用 HTTPURLConnection 进行上传.Iam在通知区域显示进度栏并对其进行了更新.
Iam搜索了将近一周的时间来执行此操作.但是无法获得提示.如果有人知道，请帮助我

Hi Iam doing an android aplication in which iam uploading videos to PHP server.
Iam using HTTPURLConnection to do the upload. Iam strucked in showing progress bar in notification area and updating it.
Iam searching almost a week to do this.But can't get a hint.Please help me if anybody knows:

我的代码:

HttpURLConnection conn = null;
        DataOutputStream dos = null;
        DataInputStream inStream = null;
        String lineEnd = "\r\n";
        String twoHyphens = "--";
        String boundary = "*****";
        int bytesRead;
        byte[] buffer;
        String urlString = "http://xxxxx/My_path.php";
        try {
            long total = 0;
            int count = 0;
            // ------------------ CLIENT REQUEST
            UUID uniqueKey = UUID.randomUUID();
            fname = uniqueKey.toString();
            Log.e("UNIQUE NAME", fname);
            FileInputStream fileInputStream = new FileInputStream(
                    new File(selectedPath));
            URL url = new URL(urlString);                       
            conn = (HttpURLConnection) url.openConnection();
            int length=selectedPath.length();
            conn.setDoInput(true);
            conn.setDoOutput(true);
            conn.setUseCaches(false);
            conn.setRequestMethod("POST");
            conn.setRequestProperty("Connection", "Keep-Alive");
            conn.setRequestProperty("Content-Type",
                    "multipart/form-data;boundary=" + boundary);
            dos = new DataOutputStream(conn.getOutputStream());
            dos.writeBytes(twoHyphens + boundary + lineEnd);
            dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
                    + fname + "" + lineEnd);
            dos.writeBytes(lineEnd);
            buffer = new byte[8192];
            bytesRead = 0;
            while ((bytesRead = fileInputStream.read(buffer)) > 0) {                                 
                dos.write(buffer, 0, bytesRead);                    
            }           
            dos.writeBytes(lineEnd);
            dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);           
            Log.e("Debug", "File is written");
            fileInputStream.close();
            dos.flush();
            dos.close();

        } catch (MalformedURLException ex) {
            Log.e("Debug", "error: " + ex.getMessage(), ex);
        } catch (IOException ioe) {
            Log.e("Debug", "error: " + ioe.getMessage(), ioe);
        }       
        // ------------------ read the SERVER RESPONSE
        try {
            inStream = new DataInputStream(conn.getInputStream());
            String str;
            while ((str = inStream.readLine()) != null) {
                Log.e("Debug", "Server Response " + str);
            }
            inStream.close();

        } catch (IOException ioex) {
            Log.e("Debug", "error: " + ioex.getMessage(), ioex);
        }

推荐答案

经过长时间的搜索，我完成了在通知区域显示进度条的任务.我们需要的是 asynctask .可能是代码此处显示的iam不能完美运行，在iam测试时可以正常工作.如果效果良好，请检查并赞成此答案.

After a long search i finished the task of showing progress bar in notification area.All we need is asynctask.May be the code iam showing here will not work perfectly,It works fine when iam testing.Please check and upvote for this answer if it works good.

我的代码:

public class loadVideo extends AsyncTask<Void, Integer, Void> {

        int progress = 0;
        Notification notification;
        NotificationManager notificationManager;
        int id = 10;

        protected void onPreExecute() {

        }

        @Override
        protected Void doInBackground(Void... params) {
            HttpURLConnection conn = null;
            DataOutputStream dos = null;
            DataInputStream inStream = null;
            String lineEnd = "\r\n";
            String twoHyphens = "--";
            String boundary = "*****";
            int bytesRead;
            int sentData = 0;               
            byte[] buffer;
            String urlString = "http://xxxxx/xxx/xxxxxx.php";
            try {
                UUID uniqueKey = UUID.randomUUID();
                fname = uniqueKey.toString();
                Log.e("UNIQUE NAME", fname);
                FileInputStream fileInputStream = new FileInputStream(new File(
                        selectedPath));
                int length = fileInputStream.available();
                URL url = new URL(urlString);
                conn = (HttpURLConnection) url.openConnection();
                conn.setDoInput(true);
                conn.setDoOutput(true);
                conn.setUseCaches(false);
                conn.setRequestMethod("POST");
                conn.setRequestProperty("Connection", "Keep-Alive");
                conn.setRequestProperty("Content-Type",
                        "multipart/form-data;boundary=" + boundary);
                dos = new DataOutputStream(conn.getOutputStream());
                dos.writeBytes(twoHyphens + boundary + lineEnd);
                dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\""
                        + fname + "" + lineEnd);
                dos.writeBytes(lineEnd);
                buffer = new byte[8192];
                bytesRead = 0;
                while ((bytesRead = fileInputStream.read(buffer)) > 0) {
                    dos.write(buffer, 0, bytesRead);
                    sentData += bytesRead;
                    int progress = (int) ((sentData / (float) length) * 100);
                    publishProgress(progress);
                }
                dos.writeBytes(lineEnd);
                dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
                Log.e("Debug", "File is written");
                fileInputStream.close();
                dos.flush();
                dos.close();

            } catch (MalformedURLException ex) {
                Log.e("Debug", "error: " + ex.getMessage(), ex);
            } catch (IOException ioe) {
                Log.e("Debug", "error: " + ioe.getMessage(), ioe);
            }
            // ------------------ read the SERVER RESPONSE
            try {
                inStream = new DataInputStream(conn.getInputStream());
                String str;
                while ((str = inStream.readLine()) != null) {
                    Log.e("Debug", "Server Response " + str);
                }
                inStream.close();

            } catch (IOException ioex) {
                Log.e("Debug", "error: " + ioex.getMessage(), ioex);
            }

            return null;
        }

        @Override
        protected void onProgressUpdate(Integer... progress) {

            Intent intent = new Intent();
            final PendingIntent pendingIntent = PendingIntent.getActivity(
                    getApplicationContext(), 0, intent, 0);
            notification = new Notification(R.drawable.video_upload,
                    "Uploading file", System.currentTimeMillis());
            notification.flags = notification.flags
                    | Notification.FLAG_ONGOING_EVENT;
            notification.contentView = new RemoteViews(getApplicationContext()
                    .getPackageName(), R.layout.upload_progress_bar);
            notification.contentIntent = pendingIntent;
            notification.contentView.setImageViewResource(R.id.status_icon,
                    R.drawable.video_upload);
            notification.contentView.setTextViewText(R.id.status_text,
                    "Uploading...");
            notification.contentView.setProgressBar(R.id.progressBar1, 100,
                    progress[0], false);
            getApplicationContext();
            notificationManager = (NotificationManager) getApplicationContext()
                    .getSystemService(Context.NOTIFICATION_SERVICE);
            notificationManager.notify(id, notification);
        }

        protected void onPostExecute(Void result) {
            Notification notification = new Notification();
            Intent intent1 = new Intent(MultiThreadActivity.this,
                    MultiThreadActivity.class);
            final PendingIntent pendingIntent = PendingIntent.getActivity(
                    getApplicationContext(), 0, intent1, 0);
            int icon = R.drawable.check_16; // icon from resources
            CharSequence tickerText = "Video Uploaded Successfully"; // ticker-text
            CharSequence contentTitle = getResources().getString(
                    R.string.app_name); // expanded message
            // title
            CharSequence contentText = "Video Uploaded Successfully"; // expanded
                                                                        // message
            long when = System.currentTimeMillis(); // notification time
            Context context = getApplicationContext(); // application
                                                        // Context
            notification = new Notification(icon, tickerText, when);
            notification.flags |= Notification.FLAG_AUTO_CANCEL;
            notification.setLatestEventInfo(context, contentTitle, contentText,
                    pendingIntent);
            String notificationService = Context.NOTIFICATION_SERVICE;
            notificationManager = (NotificationManager) context
                    .getSystemService(notificationService);
            notificationManager.notify(id, notification);
        }
    }

感谢和问候桑达尔.

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