SliverAppBar in Flutter
Flutter uses the well-known AppBar to create a toolbar, but when we need a dynamic toolbar that will show content on swipe, we use the excellent SliverAppBar widget. Both Both widgets allow you to make your application a little prettier, which is no doubt very simple in Flutter. I have seen many questions on StackOverflow and Facebook groups about how the AppBar and SliverAppBar can be changed in terms of behavior or design. Let's look at two tasks. Task 1 We want to create a non-screwed AppBar , but not in the usual way. We want to add a Drawer that the AppBar will respond to when opened. That's it: our own AppBar with the dimensions we need. The problem is that, as we know, the AppBar has a default size, and we cannot change it. Looking at the source code, we see the AppBar parameter in Scaffold, we see that it accepts a PreferredSizeWidget widget, now we look at the source code of the AppBar and find out that this is only a StatefulWidg
