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| How do you Page transitions in Flutter |
Flutter is a popular open-source framework for building mobile and desktop apps, created by Google. One of the key features of Flutter is its animation and motion support, which allows developers to create beautiful and smooth page transitions in their apps. In this article, we will explore some of the ways to implement page transitions in Flutter, using different built-in widgets and packages.
First, let's take a look at the basic method for creating page transitions in Flutter. The core widget for displaying pages in a Flutter app is the Navigator widget, which maintains a stack of pages and provides a way to navigate between them. To push a new page onto the stack, you can use the Navigator.push method, and to pop the current page off the stack, you can use the Navigator.pop method.
Here is an example of how to use the Navigator widget to push and pop pages in a Flutter app:
class MyHomePage extends StatelessWidget {@overrideWidget build(BuildContext context) {return Scaffold(appBar: AppBar(title: Text('Home'),),body: Center(child: RaisedButton(onPressed: () {Navigator.push(context, MaterialPageRoute(builder: (context) => SecondPage()));},child: Text('Go to second page'),),),);}}class SecondPage extends StatelessWidget {@overrideWidget build(BuildContext context) {return Scaffold(appBar: AppBar(title: Text('Second Page'),),body: Center(child: RaisedButton(onPressed: () {Navigator.pop(context);},child: Text('Go back'),),),);}}
In this example, we have a MyHomePage widget and a SecondPage widget. When the button in the MyHomePage widget is pressed, the Navigator pushes the SecondPage widget onto the stack, and when the button in the SecondPage widget is pressed, the Navigator pops the SecondPage widget off the stack and returns to the MyHomePage widget.
By default, the Navigator widget uses a FadeTransition to animate the transition between pages. This transition fades out the current page and fades in the new page. However, you can customize the transition by specifying a different Route when calling the Navigator.push method.
For example, you can use the PageRouteBuilder class to create custom page transitions using animation controllers. Here is an example of how to use the PageRouteBuilder class to create a slide transition between pages:
Navigator.push(context, PageRouteBuilder(pageBuilder: (BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation) {return SecondPage();},transitionsBuilder: (BuildContext context, Animation<double> animation, Animation<double> secondaryAnimation, Widget child) {return SlideTransition(position: Tween<Offset>(begin: const Offset(1.0, 0.0),end: Offset.zero