问ProgressDialog onProgressUpdate获取错误"DecorView: mWindow.mActivityCurrentConfig is null“

EN

ProgressDialog loading;

       @Override
        protected void onPreExecute() {
            super.onPreExecute();
            if(loading!=null&&loading.isShowing())
                loading.dismiss();
            loading = new ProgressDialog(mContext);
            loading.setCancelable(true);
            loading.setIndeterminate(false);
            loading.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            loading.setMax(100);
            loading.setTitle("DownLoading: ");
            loading.setMessage("Please Wait.... ");
            loading.show();
        }

       @Override
        protected void onProgressUpdate(final Integer... values) {
           // super.onProgressUpdate(values);
            String fileSize = "";
            double m = (double) lengthOfFile / (1024 * 1024);
            DecimalFormat dec = new DecimalFormat("0.00");
            fileSize = dec.format(m);//.concat(" MB");
            loading.setMessage("loading: " + fileSize + " MB");
            loading.setProgress(values[0]);

        }

        @Override
        protected Void doInBackground(String... strings) {

                  //(downloading code goes here .....) 

                publishProgress((int) ((total * 100) / lengthOfFile));

           return null;
        }

E/DecorView: mWindow.mActivityCurrentConfig is null
E/DecorView: mWindow.mActivityCurrentConfig is null
I/chatty: uid=10293(com.alquran.tafhimul_quran) identical 1 line
E/DecorView: mWindow.mActivityCurrentConfig is null
D/ViewRootImpl@ec670c4[DownLoading: ]: ViewPostIme key 0
E/DecorView: mWindow.mActivityCurrentConfig is null
D/ViewRootImpl@ec670c4[DownLoading: ]: ViewPostIme key 1
D/ViewRootImpl@ec670c4[DownLoading: ]: dispatchDetachedFromWindow
W/InputEventReceiver: Attempted to finish an input event but the input event receiver has already been disposed.
D/InputTransport: Input channel destroyed: '465d15 ', fd=136
D/ViewRootImpl@bc87539[_StartActivity]: MSG_WINDOW_FOCUS_CHANGED 1 1
D/InputMethodManager: prepareNavigationBarInfo() DecorView@27432[_StartActivity]
D/InputMethodManager: getNavigationBarColor() -855310
E/ViewRootImpl: sendUserActionEvent() mView returned.