From e16bf97398249e15342a276f2497a94bd94c32bc Mon Sep 17 00:00:00 2001 From: 28JayG Date: Sat, 23 Feb 2019 23:54:57 +0530 Subject: [PATCH 1/4] Animated Container is ready --- lib/main.dart | 108 +++++++++++++++++++------------------------------- 1 file changed, 40 insertions(+), 68 deletions(-) diff --git a/lib/main.dart b/lib/main.dart index 94b23e9..71ec1db 100644 --- a/lib/main.dart +++ b/lib/main.dart @@ -2,108 +2,80 @@ import 'package:flutter/material.dart'; void main() => runApp(new MyApp()); +const Duration duration = Duration( + milliseconds: 500, +); + class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return new MaterialApp( title: 'Flutter Demo', - theme: new ThemeData( - // This is the theme of your application. - // - // Try running your application with "flutter run". You'll see the - // application has a blue toolbar. Then, without quitting the app, try - // changing the primarySwatch below to Colors.green and then invoke - // "hot reload" (press "r" in the console where you ran "flutter run", - // or press Run > Flutter Hot Reload in IntelliJ). Notice that the - // counter didn't reset back to zero; the application is not restarted. - primarySwatch: Colors.blue, - ), - home: new MyHomePage(title: 'Flutter Demo Home Page'), + home: new MyHomePage(title: 'Animations'), ); } } class MyHomePage extends StatefulWidget { MyHomePage({Key key, this.title}) : super(key: key); - - // This widget is the home page of your application. It is stateful, meaning - // that it has a State object (defined below) that contains fields that affect - // how it looks. - - // This class is the configuration for the state. It holds the values (in this - // case the title) provided by the parent (in this case the App widget) and - // used by the build method of the State. Fields in a Widget subclass are - // always marked "final". - final String title; @override _MyHomePageState createState() => new _MyHomePageState(); } -class _MyHomePageState extends State { - int _counter = 0; +class _MyHomePageState extends State with TickerProviderStateMixin { + double height; + double width; + Color color; + BoxShape boxShape = BoxShape.rectangle; + bool isCircle; - void _incrementCounter() { + @override + void initState() { + super.initState(); + height = 100.0; + width = 100.0; + color = Colors.blue; + isCircle = false; + } + + _toggle() { setState(() { - // This call to setState tells the Flutter framework that something has - // changed in this State, which causes it to rerun the build method below - // so that the display can reflect the updated values. If we changed - // _counter without calling setState(), then the build method would not be - // called again, and so nothing would appear to happen. - _counter++; + boxShape = isCircle ? BoxShape.circle : BoxShape.rectangle; + height = isCircle ? 400.0 : 100.0; + width = isCircle ? 400.0 : 100.0; + color = isCircle ? Colors.red : Colors.blue; }); } @override Widget build(BuildContext context) { - // This method is rerun every time setState is called, for instance as done - // by the _incrementCounter method above. - // - // The Flutter framework has been optimized to make rerunning build methods - // fast, so that you can just rebuild anything that needs updating rather - // than having to individually change instances of widgets. return new Scaffold( appBar: new AppBar( - // Here we take the value from the MyHomePage object that was created by - // the App.build method, and use it to set our appbar title. title: new Text(widget.title), ), body: new Center( - // Center is a layout widget. It takes a single child and positions it - // in the middle of the parent. - child: new Column( - // Column is also layout widget. It takes a list of children and - // arranges them vertically. By default, it sizes itself to fit its - // children horizontally, and tries to be as tall as its parent. - // - // Invoke "debug paint" (press "p" in the console where you ran - // "flutter run", or select "Toggle Debug Paint" from the Flutter tool - // window in IntelliJ) to see the wireframe for each widget. - // - // Column has various properties to control how it sizes itself and - // how it positions its children. Here we use mainAxisAlignment to - // center the children vertically; the main axis here is the vertical - // axis because Columns are vertical (the cross axis would be - // horizontal). - mainAxisAlignment: MainAxisAlignment.center, - children: [ - new Text( - 'You have pushed the button this many times:', - ), - new Text( - '$_counter', - style: Theme.of(context).textTheme.display1, - ), - ], + child: AnimatedContainer( + curve: Curves.decelerate, + duration: duration, + width: width, + height: height, + decoration: BoxDecoration( + color: color, + shape: boxShape, + ), ), ), floatingActionButton: new FloatingActionButton( - onPressed: _incrementCounter, - tooltip: 'Increment', + onPressed: () { + isCircle = !isCircle; + _toggle(); + }, + tooltip: 'Animate', child: new Icon(Icons.add), - ), // This trailing comma makes auto-formatting nicer for build methods. + ), ); } } From 35360157737e1fa5f0f9d1d84622d96c031626ac Mon Sep 17 00:00:00 2001 From: 28JayG Date: Sun, 24 Feb 2019 00:33:14 +0530 Subject: [PATCH 2/4] abstracts the code --- lib/main.dart | 67 +--------------------------------------- lib/res/home_page.dart | 69 ++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 70 insertions(+), 66 deletions(-) create mode 100644 lib/res/home_page.dart diff --git a/lib/main.dart b/lib/main.dart index 71ec1db..4e305b7 100644 --- a/lib/main.dart +++ b/lib/main.dart @@ -1,13 +1,10 @@ +import 'package:animations/res/home_page.dart'; import 'package:flutter/material.dart'; void main() => runApp(new MyApp()); -const Duration duration = Duration( - milliseconds: 500, -); class MyApp extends StatelessWidget { - // This widget is the root of your application. @override Widget build(BuildContext context) { return new MaterialApp( @@ -17,65 +14,3 @@ class MyApp extends StatelessWidget { } } -class MyHomePage extends StatefulWidget { - MyHomePage({Key key, this.title}) : super(key: key); - final String title; - - @override - _MyHomePageState createState() => new _MyHomePageState(); -} - -class _MyHomePageState extends State with TickerProviderStateMixin { - double height; - double width; - Color color; - BoxShape boxShape = BoxShape.rectangle; - bool isCircle; - - @override - void initState() { - super.initState(); - height = 100.0; - width = 100.0; - color = Colors.blue; - isCircle = false; - } - - _toggle() { - setState(() { - boxShape = isCircle ? BoxShape.circle : BoxShape.rectangle; - height = isCircle ? 400.0 : 100.0; - width = isCircle ? 400.0 : 100.0; - color = isCircle ? Colors.red : Colors.blue; - }); - } - - @override - Widget build(BuildContext context) { - return new Scaffold( - appBar: new AppBar( - title: new Text(widget.title), - ), - body: new Center( - child: AnimatedContainer( - curve: Curves.decelerate, - duration: duration, - width: width, - height: height, - decoration: BoxDecoration( - color: color, - shape: boxShape, - ), - ), - ), - floatingActionButton: new FloatingActionButton( - onPressed: () { - isCircle = !isCircle; - _toggle(); - }, - tooltip: 'Animate', - child: new Icon(Icons.add), - ), - ); - } -} diff --git a/lib/res/home_page.dart b/lib/res/home_page.dart new file mode 100644 index 0000000..37bc4bc --- /dev/null +++ b/lib/res/home_page.dart @@ -0,0 +1,69 @@ +import 'package:flutter/material.dart'; + + +const Duration duration = Duration( + milliseconds: 600, +); + +class MyHomePage extends StatefulWidget { + MyHomePage({Key key, this.title}) : super(key: key); + final String title; + + @override + _MyHomePageState createState() => new _MyHomePageState(); +} + +class _MyHomePageState extends State with TickerProviderStateMixin { + double height; + double width; + Color color; + BoxShape boxShape = BoxShape.rectangle; + bool isCircle; + + @override + void initState() { + super.initState(); + height = 100.0; + width = 100.0; + color = Colors.blue; + isCircle = false; + } + + _toggle() { + setState(() { + boxShape = isCircle ? BoxShape.circle : BoxShape.rectangle; + height = isCircle ? 400.0 : 100.0; + width = isCircle ? 400.0 : 100.0; + color = isCircle ? Colors.red : Colors.blue; + }); + } + + @override + Widget build(BuildContext context) { + return new Scaffold( + appBar: new AppBar( + title: new Text(widget.title), + ), + body: new Center( + child: AnimatedContainer( + curve: Curves.fastOutSlowIn, + duration: duration, + width: width, + height: height, + decoration: BoxDecoration( + color: color, +// shape: boxShape, + ), + ), + ), + floatingActionButton: new FloatingActionButton( + onPressed: () { + isCircle = !isCircle; + _toggle(); + }, + tooltip: 'Animate', + child: new Icon(Icons.add), + ), + ); + } +} From 26bbf6050b40fa312adc5451c6d1ddb4787845e2 Mon Sep 17 00:00:00 2001 From: 28JayG Date: Sun, 24 Feb 2019 12:38:43 +0530 Subject: [PATCH 3/4] finishes up cross-fade animation tutorial [with commenting] --- lib/res/home_page.dart | 71 +++++++++++++++++++++--------------------- 1 file changed, 35 insertions(+), 36 deletions(-) diff --git a/lib/res/home_page.dart b/lib/res/home_page.dart index 37bc4bc..406f558 100644 --- a/lib/res/home_page.dart +++ b/lib/res/home_page.dart @@ -1,6 +1,5 @@ import 'package:flutter/material.dart'; - const Duration duration = Duration( milliseconds: 600, ); @@ -14,29 +13,14 @@ class MyHomePage extends StatefulWidget { } class _MyHomePageState extends State with TickerProviderStateMixin { - double height; - double width; - Color color; - BoxShape boxShape = BoxShape.rectangle; - bool isCircle; - - @override - void initState() { - super.initState(); - height = 100.0; - width = 100.0; - color = Colors.blue; - isCircle = false; - } - - _toggle() { - setState(() { - boxShape = isCircle ? BoxShape.circle : BoxShape.rectangle; - height = isCircle ? 400.0 : 100.0; - width = isCircle ? 400.0 : 100.0; - color = isCircle ? Colors.red : Colors.blue; - }); - } +// bool isFirstVisible; +// +// @override +// void initState() { +// super.initState(); +// +// isFirstVisible = true; +// } @override Widget build(BuildContext context) { @@ -45,21 +29,36 @@ class _MyHomePageState extends State with TickerProviderStateMixin { title: new Text(widget.title), ), body: new Center( - child: AnimatedContainer( - curve: Curves.fastOutSlowIn, - duration: duration, - width: width, - height: height, - decoration: BoxDecoration( - color: color, -// shape: boxShape, - ), - ), +// child: AnimatedCrossFade( +//// layoutBuilder: (Widget firstChild, Key firstChildKey, Widget secondChild, Key secondChildKey,){ +//// +//// return Stack( +//// alignment: Alignment.center, +//// children: [ +//// firstChild, +//// secondChild, +//// ], +//// ); +//// +//// }, +// firstChild: FlutterLogo( +// size: 100.0, +// ), +// secondChild: Container( +// color: Colors.purple, +// height: 200.0, +// width: 150.0, +// ), +// crossFadeState: isFirstVisible +// ? CrossFadeState.showFirst +// : CrossFadeState.showSecond, +// duration: duration, +// ), ), floatingActionButton: new FloatingActionButton( onPressed: () { - isCircle = !isCircle; - _toggle(); +// isFirstVisible = !isFirstVisible; +// setState(() {}); }, tooltip: 'Animate', child: new Icon(Icons.add), From 425d63a5e6ad25567b18c08d83fc79c827b39a23 Mon Sep 17 00:00:00 2001 From: Jay Gandhi <37594769+28JayG@users.noreply.github.com> Date: Thu, 28 Feb 2019 22:04:50 +0530 Subject: [PATCH 4/4] Update home_page.dart --- lib/res/home_page.dart | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/lib/res/home_page.dart b/lib/res/home_page.dart index 406f558..8671750 100644 --- a/lib/res/home_page.dart +++ b/lib/res/home_page.dart @@ -1,7 +1,7 @@ import 'package:flutter/material.dart'; const Duration duration = Duration( - milliseconds: 600, + milliseconds: 700, ); class MyHomePage extends StatefulWidget { @@ -13,6 +13,7 @@ class MyHomePage extends StatefulWidget { } class _MyHomePageState extends State with TickerProviderStateMixin { + //TODO:[2] Declare the required variable and initialize it in initState // bool isFirstVisible; // // @override @@ -29,7 +30,9 @@ class _MyHomePageState extends State with TickerProviderStateMixin { title: new Text(widget.title), ), body: new Center( +//TODO:[1] Declare AnimatedCrossFade and its properties // child: AnimatedCrossFade( + //TODO:[]Okay so, the transition seems a little bit odd lets work it out //// layoutBuilder: (Widget firstChild, Key firstChildKey, Widget secondChild, Key secondChildKey,){ //// //// return Stack( @@ -55,13 +58,14 @@ class _MyHomePageState extends State with TickerProviderStateMixin { // duration: duration, // ), ), + //TODO:[3] You'll need something to trigger your animation here it is floatingActionButton: new FloatingActionButton( onPressed: () { // isFirstVisible = !isFirstVisible; // setState(() {}); }, tooltip: 'Animate', - child: new Icon(Icons.add), + child: new Icon(Icons.play_arrow), ), ); }