When you swipe vertically, image is dragged towards the swipe, with fading out animation of black background.
And after release, it smoothly returns to it's previous position on the screen, like Hero animation does.
How is it possible to recreate such an effect using Flutter? The same scenario, in fullscreen photo view.
photo_view package is desired for fullscreen, so it shouldn't interfere with zooming.
What you need is actually an out-of-the-box widget, and it's surprisingly easy to use. It's called Hero. Basically, you wrap the widget you want to animate like that in a Hero widget, with a specific tag string, and, when you navigate to another screen, you wrap the destination widget in another Hero with the same tag. An effect like the one you shared can be achieved by wrapping two widgets with the same photo with Heroes in different PageRoutes.
Check out this Flutter widget of the week video to get you started, and this Flutter.dev article for a more detailed explanation on Hero widgets.
Edit: I see you are looking for a more specific image-viewer behavior. Then, I suggest you use the photo_view package, which includes many functionalities to visualize images, including the hero transition with swipe-dow-to-dismiss behaviors, pinching to zoom, etc.
I found the solution.
To create such an animation, you should use extended_image package, which has SlideOutPage widget for creation of such transitions.
Related
Currently in the design phase of an app. One of the goals we have is to be able to touch a certain widget, and on tap and hold, have the widget then follow the user's finger where they drag.
Then, if the user releases gently, the widget snaps back to the original location.
However, if the user flicks the widget, we want the widget to fly across the screen, reacting correctly to the user's flick.
Is there anything built-in that can handle this? Also, if this needs to be explained more to make sense, happy to elaborate.
Thanks!
I think for such cases you can use GestureDetector widget. It provides several useful functions. See here:
https://api.flutter.dev/flutter/widgets/GestureDetector-class.html
You can use onPanStart of GestureDetector and then get the offset and use it to move the widget accross the screen.
If I create a home screen with a GridView of widgets containing images and descriptions, how could I make it so that when a user clicks on one of the widgets, the image in that widget animates over to the next screen? For example, if I have a chat app where users could chat with any other user they select in the GridView, the image from that selected widget would animate to the top of a chat screen for them to chat. I thought maybe this could be accomplished with a hero animation but I am not able to figure it out since the image widget would be nested inside a widget and then inside a GridView. It would be easy to pass the image URL through to the chat screen, which I may have to do, but I think the animation would make the UI flow much better. Any ideas?
You can do it, just make sure the hero tags between the two routes/pages match and that on any given page all the hero tags are unique. I have the same where the hero animates from a grid view into the next page's app bar.
How can I make scroll animations in flutter. Here is an example of what I want to create: https://www.apple.com/macbook-air-m2/. As you can see, when you scroll downwards the page is animated very nicely. I would like to create this sort of thing in flutter. Please specify if something like this will not work on any of flutters platforms.
Above the image to below the animation.
How to Extract the single part of the image element in flutter then make to below animation.
How to achieve this type of animation in flutter. It was done by CSS. I was working to make this type of animation but I need some Suggestions and Example. If you know please share your experience and knowledge for achieve this.
You must have the SVG file of each of the gears and use the Rotation Transition Widget and stack Widget for Rotation and use AnimatedContainer for wieght
Basically I'm trying to build a game to learn flutter more.
Right now I'm just trying to get a Text widget to move from the top of the phone screen, towards the bottom of the phone screen... I'm building a Space Invaders type of game with just Text.
From what I've read by googling the problem, should I use Flame? Or can everything be done by just using the base Flutter framework (collision detection, moving widgets, etc...)? Thanks.
You can use Draggable class for dragging the item.
A simple way to solve this problem is to have the moving Text widget a child of the Stack() widget. Actually, the child of the Stack() widget is a Positioned() widget, which has left and top properties, which you can update periodically with a Timer.periodic function to move the widget down by incrementing top property. So, your Text widget is a child of the Positioned() widget, that you use for, well, positioning.
I have a working example of this in my slowly_moving_widgets_field project, where I have a bunch of arbitrary widgets moving about the screen every X seconds as you desire.