“android.view.WindowManager$BadTokenException: Unable to add window” on buider.show()

Question

From my main activity, I need to call an inner class and in a method within the class, I need to show AlertDialog. After dismissing it, when the OK

Answer 1

• first you cannot extend AsyncTask without override doInBackground

• second try to create AlterDailog from the builder then call show().

  private boolean visible = false;
  class chkSubscription extends AsyncTask
  {
  
      protected void onPostExecute(String result)
      {
          AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
          builder.setCancelable(true);
          builder.setMessage(sucObject);
          builder.setInverseBackgroundForced(true);
          builder.setNeutralButton("Ok", new DialogInterface.OnClickListener() {
              public void onClick(DialogInterface dialog, int whichButton)
              {
                  dialog.dismiss();
              }
          });
  
          AlertDialog myAlertDialog = builder.create();
          if(visible) myAlertDialog.show();
      }
  
      @Override
      protected String doInBackground(String... arg0)
      {
          // TODO Auto-generated method stub
          return null;
      }
  }
  
  
  @Override
  protected void onResume()
  {
      // TODO Auto-generated method stub
      super.onResume();
      visible = true;
  }
  
  @Override
  protected void onStop()
  {
      visible = false; 
      super.onStop();
  }