I want to implement this page swipe behaviour in Flutter as shown in the picture. The user should be able to drag the screen from the right edge of the screen to the left up until the page is dragged halfway through the screen. Once released, the app will move onto a new page.
Desired Outcome
You can use Slidable Package and wrap the whole page in a slideable.
Slidable(
key:UniqueyKey(),
endActionPane: ActionPane(
onDismissed: (){}, // Leave empty, confirmDismiss will handle event
confirmDismiss: () asnyc {
// function that rerender page with next question
}
children: [] //list of widgets to show when slide
child: // this is the widget that shows and will be slideable
if you want to have both sides you just add startActionPane aswell.
Related
Okay so there are a couple of questions already asked regarding this but no one is doing what I want to do.
Context :
I've a bloc which maintains a stateCounter. Now whenever user visits the onboarding page, they are shown three different subpages (not exactly pages but 3 different content items). i.e.,
stateCounter == 1 | Fetch image from map at index = stateCounter + Fetch title from map at index = stateCounter + Fetch subtitle from map at index = stateCounter
When user clicks Next button, stateCounter increases and the Map's next child is shown which re-renders my page (to move to the next item).
I'm also using a Dismissble widget on each child so rendered, so that user can also increase the stateCounter when he/she drags from end to start (to achieve a sliding effect)
Now everything works like a charm but the only problem here is that when the next data is rendered (when stateCounter increases and we fetch the next series of image, title and subtitle), the change is not so subtle.
Here, I would want to show some kind of animation so that It looks good to the user. How can i do that ??
Here is the ListView that gets rendered on the screen based on stateCounter value:
ListView onBoardingSubscreens(stateCounter, context, bloc, controller) {
return ListView(
children: [
skipBtn(context, bloc),
renderImage(stateCounter, 0, context),
const SpaceRenderer(
heightFactor: 3,
),
renderScroller(stateCounter, 1, context),
const SpaceRenderer(
heightFactor: 3,
),
titleText(context, stateCounter),
const SpaceRenderer(
heightFactor: 2,
),
captionText(stateCounter),
Timer(
controller: controller,
secondsRemaining: 6,
onFinished: () {
stateChangeLogic(stateCounter, context, bloc, controller);
controller.restart();
},
),
],
);
}
As I mentioned above, this is rendered inside : ConstrainedBox which is rendered inside a Dismissible and a Column in the end.
Kindly help. I already tried using AnimatedContainer etc. but no animations are being shown. I'm open to using a package (if needed)
Android Studio + Flutter
I have a Row at the bottom of the screen.
It includes TextField and Button (Add).
When there is some text in TextField and user clicks Add, I want it to appear as a Bubble inside a Container starting from the top left.
What would be the correct way to do it? I want the bubbles to accumulate like a notes app and eventually be scrollable too.
Thanks!
Try using the Snackbar Widget, which can be personalized heavily.
Here's the documentation.
EDIT. Since you want a permanent list of bubbles on the top, I'd suggest using a provider, so that when you click the button, the onTap event validates and adds the data to a list (below, myElements). Then, up to the top, just add a Consumer Widget that listens to changes to the list (it rebuilds its children every time something changes). In the following example code (I have not tested it!) I use an Expanded widget just for fun and I use a ListView.builder inside the Consumer to show the list of elements you've added, since the amount of added element could be high. Finally, I suggest using either ListTile or Card or a combination of the two, since you want something aesthetically beatiful like a bubble (you'll have to play with the settings, a little):
return ... (
child: Column(
children: [
Text("Some title..?"),
Expanded(
Consumer(
builder: (ctx, myElements, _) => ListView.builder(
itemCount: myElements.length,
itemBuilder: (ctx, i) => ListTile(
title: Text("You added ${myElements[i]}"),
// something else...?
),
),
),
),
Row( /* ... Text field + Button here... */),
],
),
// ...
I set two widgets in a Stack(), the one in the back is a sidebar and the one in the front is my main page.
When I click on the menu button from the main page, the main page gets shifted to the right and then the user can see the sidebar.
Now the problem is when the sidebar gets displyed i'm obliged to click exactly on the menu button to go back to the main page.
What i want to do is just to click anywhere in the main page to hide the sidebar.
I mean that i want to set the whole main page as a button when the sidebar is displayed.
You can use InkWell
InkWell(
onTap: (){
/// do something
},
child: Text('data') /// your widget,
),
You can also use GestureDetector
Generally if you want to make anything tappable you can just wrap the widget with GestureDetector
I fixed it by wrapping the main page with InkWell() and I added this to the onTap property"
InkWell(
onTap: isSidebarCollapsed ? () {
setState(() {
isSidebarCollapsed = false;
});
} : null,
child: Container(...)
)
Note that isSidebarCollapsed is the variable that determines if the menu is displayed or not.
Explaination of the code:
If the sidebar is collapsed (is displayed) then the onTap property returns a function where I set the variable isSidebarCollapsed to false (to say that the sidebar is gonna be hidden).
Else it returns null
I need help with the animation, when I click on the FAB icon in the first screen the icon will go up with animation and the other screen (shown in second image) should be displayed with animation like curtain. And the fab icon should be set in the app bar just like second image.
Bottom menu should be there in both of the screen just like the screenshots given.
you can do one thing that just wrap floating action button to AnimatedContainer
AlignmentDirectional _ironManAlignment = AlignmentDirectional.bottomCenter;
...
floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
floatingActionButton: AnimatedContainer(
duration: Duration(seconds: 2),
alignment: _ironManAlignment,
child: FloatingActionButton(
onPressed: () {
_flyIronMan();
},
child: Icon(Icons.add),
),
),
like this
when you press button then call this method
void _flyIronMan() {
setState(() {
_ironManAlignment =
AlignmentDirectional(0.0, -0.8); //AlignmentDirectional(0.0,-0.7);
});
}
Just wrap buttons on each page with Hero widget, like that:
Hero(
tag: 'fab',
child: FloatingActionButton()
);
With the design you want to achieve, I suggest you to use sliding_up_panel instead of pushing new screen.
It has a parameter collapsed, in which you can put FloatingActionButton to expand panel on tap, and show the same button inside the expanded panel. Just set panel non-draggable, and it won't expand on swipe.
Please read it's documentation carefully, I'm sure you can achieve the effect you want with this widget.
Since i want this to be my layout i was trying to implement it with a showModalBottomSheet but the problem is that this widget only works on the button click as it is showing me error when i am trying to call the method as it is in the initState method. So then I started to work with bottomSheet value present in the scaffold but then the background is being displayed only upto the starting of the bottom sheet creating the distance between the model sheet and the background whereas I want it to overlap like in the image..How should I prepare this layout.
There is no such parameter as "bottomSheet" in Scaffold, there is one called bottomAppBar, which is used for making Bottom Bars like the one on the Youtube Android App. So this should help you make the basic structure.
Use a Stack widget to put widgets on top of each other, in first layer, add the image using the NetworkImage widget, then in the second layer, make a Column, like this:
#override
Widget build() => Scaffold(
body: _body(),
);
_body() => Stack(
children: <Widget>[
NetworkImage(your_url_here),
Column(
children: <Widget>[
_basicDetails(),
_guidePanel(),
]
),
]);
Then create 2 new methods after the _body method like this:
_body() => Stack(...);
_basicDetailsPage() => Container();
_guidePanel() => Container();
Create your layout in these 2 methods. Comment if you need more help :)
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