fix: removes most warnings

Author: Ascenio

lib/animations/menu_exploration/menu_exploration.dart

@@ -18,7 +18,7 @@ class MenuExploration extends StatefulWidget {
  this.height,
  this.onChanged,
  this.selectedValue,
- }) : assert(options != null && options.isNotEmpty),
+ }) : assert(options.isNotEmpty),
  super(key: key);
 
  @override

lib/app_clone/movies_concept/movies_concept_page.dart

@@ -184,8 +184,10 @@ class _MoviesConceptPageState extends State<MoviesConceptPage> {
  left: size.width / 4,
  bottom: 20,
  width: size.width / 2,
- child: RaisedButton(
- color: Colors.black,
+ child: ElevatedButton(
+ style: ElevatedButton.styleFrom(
+ primary: Colors.black,
+ ),
  child: Text(
  'BUY TICKET',
  style: TextStyle(color: Colors.white),

lib/app_clone/photo_concept/photo_concept_page.dart

@@ -216,10 +216,12 @@ class _PhotoConceptPageState extends State<PhotoConceptPage> {
  duration: duration),
  Padding(
  padding: const EdgeInsets.all(12.0),
- child: RaisedButton(
- color: Colors.redAccent,
- shape: RoundedRectangleBorder(
- borderRadius: BorderRadius.circular(20.0),
+ child: ElevatedButton(
+ style: ElevatedButton.styleFrom(
+ primary: Colors.redAccent,
+ shape: RoundedRectangleBorder(
+ borderRadius: BorderRadius.circular(20.0),
+ ),
  ),
  onPressed: () {},
  child: Padding(

lib/app_clone/sports_store/sports_store_page.dart

@@ -305,7 +305,7 @@ class _SportsStorePageState extends State<SportsStorePage> {
  child: Row(
  children: [
  Expanded(
- child: OutlineButton(
+ child: OutlinedButton(
  onPressed: null,
  child: Text(
  '3',
@@ -317,7 +317,7 @@ class _SportsStorePageState extends State<SportsStorePage> {
  width: 10,
  ),
  Expanded(
- child: OutlineButton(
+ child: OutlinedButton(
  onPressed: null,
  child: Text(
  '4',
@@ -329,7 +329,7 @@ class _SportsStorePageState extends State<SportsStorePage> {
  width: 10,
  ),
  Expanded(
- child: OutlineButton(
+ child: OutlinedButton(
  onPressed: null,
  child: Text(
  '5',

lib/appbar_sliverappbar/sample3.dart

@@ -147,13 +147,16 @@ class AlbumWidget extends StatelessWidget {
  color: Colors.white,
  ),
  ),
- RaisedButton(
+ ElevatedButton(
+ style: ElevatedButton.styleFrom(
+ primary: Colors.pinkAccent,
  shape: RoundedRectangleBorder(
  borderRadius: BorderRadius.circular(25),
  ),
- color: Colors.pinkAccent,
- child: Text('ADD TO PLAYLIST'),
- onPressed: () => null)
+ ),
+ child: Text('ADD TO PLAYLIST'),
+ onPressed: () => null,
+ )
  ],
  ),
  ),

lib/communication_widgets/child1_page.dart

@@ -30,21 +30,21 @@ class Child1PageState extends State<Child1Page> {
  widget.title ?? value,
  style: Theme.of(context).primaryTextTheme.headline5,
  ),
- RaisedButton(
+ ElevatedButton(
  //Update Parent from Child 1
  child: Text("Action 2"),
  onPressed: () {
  widget.child2Action2!("Update from Child 1");
  },
  ),
- RaisedButton(
+ ElevatedButton(
  //Update Child 2 from Child 1
  child: Text("Action 3"),
  onPressed: () {
  widget.child2Action3!("Update from Child 1");
  },
  ),
- RaisedButton(
+ ElevatedButton(
  //Change Tab from Child 1 to Child 2
  child: Text("Action 4"),
  onPressed: () {

lib/communication_widgets/parent_page.dart

@@ -74,7 +74,7 @@ class ParentPageState extends State<ParentPage>
  textAlign: TextAlign.center,
  ),
  ),
- RaisedButton(
+ ElevatedButton(
  //Update Child 1 from Parent
  child: Text("Action 1"),
  onPressed: () {

lib/fetch_data/main_fetch_data.dart

@@ -39,7 +39,7 @@ class _MainFetchDataState extends State<MainFetchData> {
  ),
  bottomNavigationBar: Padding(
  padding: const EdgeInsets.all(8.0),
- child: RaisedButton(
+ child: ElevatedButton(
  child: Text("Fetch Data"),
  onPressed: _fetchData,
  ),

lib/hero_animations/main_hero_animations.dart

@@ -121,7 +121,7 @@ class _MainHeroAnimationsPageState extends State<MainHeroAnimationsPage> {
  )),
  ),
  actions: <Widget>[
- OutlineButton(
+ OutlinedButton(
  onPressed: () => Navigator.of(context).pop(),
  child: Icon(Icons.close),
  ),

lib/hero_animations/page1.dart

@@ -20,7 +20,7 @@ class Page1 extends StatelessWidget {
  ),
  ),
  ),
- OutlineButton(
+ OutlinedButton(
  onPressed: () => Navigator.of(context).pop(),
  child: Icon(Icons.close),
  )