Notification Update onPostExecute AsyncTask

Question

<-- Android/Java --->

private NotificationManager mNotifyManager;
private NotificationCompat.Builder build;
final int id = 101;

private class Download extends AsyncTask<Void, Integer, Integer> {

      @Override
      protected void onPreExecute() {
         super.onPreExecute();

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

      @Override
      protected void onProgressUpdate(Integer... values) {
         // Update progress
         build.setProgress(100, values[0], false);
         mNotifyManager.notify(id, build.build());
         super.onProgressUpdate(values);
      }

      @Override
      protected Integer doInBackground(Void... params) {
            //.........

                    FileOutputStream f = new FileOutputStream(new File(rootFile,
                            arg0[1]));

                    InputStream in = c.getInputStream();
                    byte[] buffer = new byte[1024];
                    int len1 = 0;
                    float conLen = c.getContentLength();
                    float total = 0;
                    while ((len1 = in.read(buffer)) > 0) {
                        f.write(buffer, 0, len1);
                        total += len1;
                        publishProgress((int) (total * 100 / conLen));
                    }
                    f.close();

         return result;
      }

      @Override
      protected void onPostExecute(Integer result) {
         super.onPostExecute(result);
         Log.e(TAG,"in PostExecute");
         build.setContentText("Download complete");
         // Removes the progress bar
         build.setProgress(0, 0, false);
         mNotifyManager.notify(id, build.build());
      }
   }

}

Problem

Every Think Working Fine But When I am in postExecute Notification not update

Any one gets Where I am going wrong ?

This is what written in android docs for updating notifications.`Caution: Android applies a rate limit when updating a notification. If you post updates to a notification too frequently (many in less than one second), the system might drop some updates.` You are updating notification multiple times in your progress update. That might be the issue. — Vivek Mishra, Oct 05 '18 at 10:58
I tink you can remove your notification from progress update method — Vivek Mishra, Oct 05 '18 at 11:04
then how to show download process in notification ? @VivekMishra — Ashvin solanki, Oct 05 '18 at 11:05
https://stackoverflow.com/questions/1871515/progress-bar-in-notification-bar-when-uploading-image — Vivek Mishra, Oct 05 '18 at 11:07
@VivekMishra its not updating but in postExecute i will cancle the notification and angain showing notification with complete lable done — Ashvin solanki, Oct 05 '18 at 11:38

score 1 · Answer 1 · answered Oct 05 '18 at 11:13

1

From your code it looks like you are using same ids for different notifications so the first notification in onPreExecute() will be showing but the one in onPostExecute() might not show up.

answered Oct 05 '18 at 11:13

karan

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i am using same id sir i miss that in question sorry for miss understanding – Ashvin solanki Oct 05 '18 at 11:14
if you want to use same id, you need to call cancel before notify again. check this https://stackoverflow.com/questions/29965263/android-notification-update-for-same-notification-id – karan Oct 05 '18 at 11:16
If you will cancel then it will be new notification everytime. – Vivek Mishra Oct 05 '18 at 11:19
i want to update notification i down't wan't to cancle it – Ashvin solanki Oct 05 '18 at 11:21
shouldn't this be `build.setProgress(100, 0, false);`? do you want to hide progress after download? – karan Oct 05 '18 at 11:26
can you try `build.setContentText("Download complete").setProgress(0, 0, false);` – karan Oct 05 '18 at 11:30
@nightfury101 then what is the `diffrent build.setContentText("Download complete").setProgress(0, 0, false);` and `build.setContentText("Download complete"); build.setProgress(0, 0, false);` – Ashvin solanki Oct 05 '18 at 11:50
second build statment might be over writing the first. just in case. – karan Oct 05 '18 at 11:53

score 0 · Accepted Answer · answered Oct 07 '18 at 06:55

Thanks All Who Help Me I solve it Yesterday

 protected void onPostExecute(Integer result) {
     super.onPostExecute(result);
     DownloadDone();
  }

First I am Cancle My Notification Then Showing Again

public void DonwloadDone()
        {
            mNotifyManager.cancel(id);
            mNotifyManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
            build = new NotificationCompat.Builder(getBaseContext());
            build.setContentTitle("Download")
                    .setContentText("Complete")
                    .setSmallIcon(R.drawable.ic_launcher_foreground);
            Notification notification = build.build();
            mNotifyManager.notify(id, notification);
            sendMyBroadCast("Complete",fx.getPath());

        }

Notification Update onPostExecute AsyncTask

2 Answers2