flutter_package_ progress_dialog
A progress bar is an important control element of the progression of an extended computer operation. Here is a very simple and easy-to-use flutter package for showing a progress bar.
Usage
Import the package
import 'package:custom_progress_dialog/custom_progress_dialog.dart';
Create an object for ProgressDialog class
ProgressDialog _progressDialog = ProgressDialog();
showing progress dialog
_progressDialog.showProgressDialog(context,dismissAfter: Duration(seconds: 5),textToBeDisplayed:'Sending...',onDismiss:(){
//things to do after dismissing -- optional
});
dismissAfter - if null then progress dialog won't dismiss until dismissProgressDialog is called from the code.
dismiss progressDialog
_progressDialog.dismissProgressDialog(context);

GitHub
https://github.com/VikasJilla/progress_dialog