I am using SliverAppBar widget with some background image behind it. Since the image I will load will be dynamic, sometimes it can have light colors and can cause the back button (or any other action button) to be hardly visible.
As you can see in the screenshot below, I gave a little shadow to the app bar title using TextStyle & Shadow widgets, so it is much more visible than the back button.
You can try use "elevation" here is the Flutter link for more clarification: https://www.google.com/url?sa=t&source=web&rct=j&url=https://api.flutter.dev/flutter/material/SliverAppBar/elevation.html&ved=2ahUKEwiEpfiIn4TwAhWUH7cAHY9ECIwQFjACegQIBRAC&usg=AOvVaw0wCdyaVv3EA8ulVXXvaVMu
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Can anyone suggest to me how can I build a pull-down appbar. I searched the whole net but can't find any idea regarding this. It would be great if anyone could guide or suggest to me to build the appbar.
Edit:-
Many developers are saying to use SliverAppBar. SliverAppBar basically collapses the app bar when we scroll up the listview or any other widget, whereas I want an app bar that pulls down i.e when we tap the app bar and scroll it down only the app bar grows on top of the body. So basically when we navigate to the home screen the app bar should look like the second referred image i.e it must be closed. But we can pull down that appbar to view the hidden contents of the appbar. I am attaching an image for reference.
I Think what you mean what pull down App is an Appbar that expands try.
the silver Appbar
https://youtu.be/mSc7qFzxHDw
I want to dim (gray) the background when the bottom sheet opens, like a modal bottom sheet, but still be able to interact with the rest of the UI while the bottom sheet is open - like a regular bottom sheet.
Any ideas?
Even though, I won't recommend creating such an effect as it is not very understandable from the user perspective.
You can achieve this by using the IgnorePointer, Stack and setState((){})
1- Add a field bool showOverlay = false;
2- Align some Container to with Alignment.bottom to represent ur bottom sheet
3- Put some overlay Container with some background color and opacity and wrap it with IgnorePointer(ignoring: true, ...) which will let it not interfere with your widgets below.
I think you got it from here.
We have a screen with listItems. Each item can be longPressed to open a popupMenu. Now requirement is to blur the screen except the selected listItem on long press. (check screenshot)
How can this be achieved?
I think you are looking for something like this one.
https://pub.dev/packages/focused_menu
Using this library you can show the popup menu by making the background blurry without the tapped item.
I have tried everything. But I can't find a permanent solution How to put the title in the center while my back icon button on the left side. I want to use this secondary app bar on every screen of my app.
Please check the image below for a better understanding.
This is the problem that I am facing
Take a ListView Widget at body of Scaffold and in its children put first widget as a ListTile that comes under AppBar. So that there will be a leading icon and title in center. After that take a Column and add your needed widgets for every page.
I'm asking how to disable Overlays to move when a Scaffold.of(context).showSnackBar is called like on my video below.
The same thing is happening when the keyboard appear. Sometime the blue floattingButton (+) don't come back to it's original position :-(
Thx in advance.
Problem animation
The FloatingActionButton going up when the Scaffold is displayed is something common to all default implementations.
Give a look to the "Bootom app bar" demo in the Gallery app. Press on the search button and you will see it coming up. Or just add a Scaffold to the app that is built with flutter create command.
This happens because of the way the FAB button is placed on the screen and the effect of displaying the Snackbar by the Scaffold.
The FAB button is displayed at the bottom of the content area of the Scaffold content. When the content area is shrinked to include the BottomAppBar, the FAB goes up with it. It has nothing to do with Overlay.
You have two options:
Either you create your own versión of the FAB which is not
controlled by the Scaffold.
Or you hack the Scaffold so the size of the SnackBar is not taken
into account.
For this second option you can try the following:
Go to the file /lib/src/material/scaffold.dart in your flutter installation and look for the line with the code snackBarSize: snackBarSize, inside the _ScaffoldLayout class.
Replace it with snackBarSize: Size(0.0, 0.0),
You will see that the FAB stays in its place.