如何从通知抽屉中点击和取消进度条，如 facebook 的照片上传？

Question

在我的应用程序中，我在通知栏上有一个进度条来指示照片上传，我想在用户点击进度条（如 facebook 照片）时取消上传过程 upload.How 我可以这样做吗？感谢任何帮助。

我的代码显示进度条。

  mNotifyManager = (NotificationManager)    getSystemService(Context.NOTIFICATION_SERVICE);

                mBuilder = new NotificationCompat.Builder(ImageUploadActivity.this);
                mBuilder.setContentTitle("Upload")
                        .setContentText("Upload in progress")
                        .setSmallIcon(R.drawable.ic_launcher);

                new ImageUploadTask().execute();
 class ImageUploadTask extends AsyncTask<Void,Integer, String> {
    @Override
    protected void onPreExecute() {
        super.onPreExecute();

        // Displays the progress bar for the first time.
        mBuilder.setProgress(100, 0, false);
        mNotifyManager.notify(id, mBuilder.build());



    }
    @Override
    protected void onProgressUpdate(Integer... values) {
        // Update progress
        mBuilder.setProgress(100, values[0], false);
        mNotifyManager.notify(id, mBuilder.build());
        super.onProgressUpdate(values);
    }
    @Override
    protected String doInBackground(Void... unsued) {
        int i;
        for (i = 0; i <= 100; i += 5) {
            // Sets the progress indicator completion percentage
            publishProgress(Math.min(i, 100));
            try {

                Thread.sleep(2 * 1000);
                HttpClient httpClient = new DefaultHttpClient();
                HttpContext localContext = new BasicHttpContext();
                HttpPost httpPost = new HttpPost("http://10.1.1.1/test/upload.php");

                MultipartEntity entity = new MultipartEntity(
                        HttpMultipartMode.BROWSER_COMPATIBLE);

                ByteArrayOutputStream bos = new ByteArrayOutputStream();
                bitmap.compress(Bitmap.CompressFormat.JPEG, 100, bos);
                byte[] data = bos.toByteArray();


          /* entity.addPart("uploaded_file", new ByteArrayBody(data,
                    "myImage.jpg"));*/

                // String newFilename= filename.concat("file");
                // newFilename=filename+newFilename;

                entity.addPart("uploaded_file", new ByteArrayBody(data,
                        filename));
                //  Log.e(TAG, "Method invoked");
                httpPost.setEntity(entity);
                HttpResponse response = httpClient.execute(httpPost,
                        localContext);
                BufferedReader reader = new BufferedReader(
                        new InputStreamReader(
                                response.getEntity().getContent(), "UTF-8"));

                StringBuilder builder = new StringBuilder();
                String aux = "";

                while ((aux = reader.readLine()) != null) {
                    builder.append(aux);
                }

                String sResponse = builder.toString();


                return sResponse;
            } catch (Exception e) {
             /*   if (dialog.isShowing())
                    dialog.dismiss();
                Toast.makeText(getApplicationContext(), "Exception Message 1", Toast.LENGTH_LONG).show();
                Log.e(e.getClass().getName(), e.getMessage(), e);
                return null;*/
            }
        }
        return null;
    }


    @Override
    protected void onPostExecute(String result) {


        super.onPostExecute(result);
        mBuilder.setContentText("Upload completed");
        // Removes the progress bar
        mBuilder.setProgress(0, 0, false);
        mNotifyManager.notify(id, mBuilder.build());


    }
   }}

Answer 1

从 api 级别 4.1 开始，您可以向通知添加操作按钮。要查看有关通知的基础知识，请查看 android doc.

如需更多帮助，您可以查看此 so answer and this tutorial

如何从通知抽屉中点击和取消进度条，如 facebook 的照片上传？

How to tap and cancel progress bar from the Notification drawer like facebook's photo upload?

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