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tsacdop-podcast-app-android
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Code Issues Releases Wiki Activity

Add animation to group change.

This commit is contained in:
stonegate 2020-08-19 18:09:50 +08:00
parent e9e27d8cb6
commit 5d940a6342
1 changed files with 114 additions and 68 deletions
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182
lib/home/home_groups.dart
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@ -30,18 +30,41 @@ class ScrollPodcasts extends StatefulWidget {
_ScrollPodcastsState createState() => _ScrollPodcastsState();
}
class _ScrollPodcastsState extends State<ScrollPodcasts> {
int _groupIndex;
Future<int> getPodcastUpdateCounts(String id) async {
var dbHelper = DBHelper();
return await dbHelper.getPodcastUpdateCounts(id);
}
class _ScrollPodcastsState extends State<ScrollPodcasts>
with SingleTickerProviderStateMixin {
int _groupIndex = 0;
AnimationController _controller;
TweenSequence _slideTween;
_getSlideTween(double value) => TweenSequence<double>([
TweenSequenceItem(
tween: Tween<double>(begin: 0.0, end: value), weight: 4 / 5),
TweenSequenceItem(tween: ConstantTween<double>(0.0), weight: 1 / 5)
]);
@override
void initState() {
super.initState();
_groupIndex = 0;
_controller =
AnimationController(vsync: this, duration: Duration(milliseconds: 125))
..addListener(() {
if (mounted) setState(() {});
})
..addStatusListener((status) {
if (status == AnimationStatus.completed) _controller.reset();
});
_slideTween = _getSlideTween(0.0);
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
Future<int> getPodcastUpdateCounts(String id) async {
var dbHelper = DBHelper();
return await dbHelper.getPodcastUpdateCounts(id);
}
Widget _circleContainer(BuildContext context) => Container(
@ -98,11 +121,13 @@ class _ScrollPodcastsState extends State<ScrollPodcasts> {
gravity: ToastGravity.BOTTOM,
);
} else {
setState(() {
(_groupIndex < groups.length - 1)
? _groupIndex++
: _groupIndex = 0;
});
if (mounted) {
setState(() {
(_groupIndex < groups.length - 1)
? _groupIndex++
: _groupIndex = 0;
});
}
}
}
},
@ -116,12 +141,9 @@ class _ScrollPodcastsState extends State<ScrollPodcasts> {
horizontal: 15.0),
child: Text(
groups[_groupIndex].name,
style: Theme.of(context)
.textTheme
.bodyText1
style: context.textTheme.bodyText1
.copyWith(
color: Theme.of(context)
.accentColor),
color: context.accentColor),
)),
Spacer(),
Container(
@ -160,8 +182,7 @@ class _ScrollPodcastsState extends State<ScrollPodcasts> {
),
Container(
height: 70,
color: Theme.of(context)
.scaffoldBackgroundColor,
color: context.scaffoldBackgroundColor,
child: Row(
children: <Widget>[
_circleContainer(context),
@ -216,7 +237,7 @@ class _ScrollPodcastsState extends State<ScrollPodcasts> {
mainAxisSize: MainAxisSize.min,
children: <Widget>[
GestureDetector(
onVerticalDragEnd: (event) {
onVerticalDragEnd: (event) async {
if (event.primaryVelocity > 200) {
if (groups.length == 1) {
Fluttertoast.showToast(
@ -225,11 +246,18 @@ class _ScrollPodcastsState extends State<ScrollPodcasts> {
);
} else {
if (mounted) {
setState(() {
(_groupIndex != 0)
? _groupIndex--
: _groupIndex = groups.length - 1;
});
setState(
() => _slideTween = _getSlideTween(20));
_controller.forward();
await Future.delayed(
Duration(milliseconds: 100));
if (mounted) {
setState(() {
(_groupIndex != 0)
? _groupIndex--
: _groupIndex = groups.length - 1;
});
}
}
}
} else if (event.primaryVelocity < -200) {
@ -239,11 +267,18 @@ class _ScrollPodcastsState extends State<ScrollPodcasts> {
gravity: ToastGravity.BOTTOM,
);
} else {
setState(() {
(_groupIndex < groups.length - 1)
? _groupIndex++
: _groupIndex = 0;
});
setState(
() => _slideTween = _getSlideTween(-20));
await Future.delayed(
Duration(milliseconds: 100));
_controller.forward();
if (mounted) {
setState(() {
(_groupIndex < groups.length - 1)
? _groupIndex++
: _groupIndex = 0;
});
}
}
}
},
@ -316,45 +351,56 @@ class _ScrollPodcastsState extends State<ScrollPodcasts> {
final color =
podcastLocal.backgroudColor(context);
return Tab(
child: ClipRRect(
borderRadius: BorderRadius.all(
Radius.circular(25.0)),
child: Stack(
alignment: Alignment.bottomCenter,
children: <Widget>[
LimitedBox(
maxHeight: 50,
maxWidth: 50,
child: CircleAvatar(
backgroundColor:
color.withOpacity(0.5),
backgroundImage:
podcastLocal.avatarImage),
child: Transform.translate(
offset: Offset(
0,
_slideTween
.animate(_controller)
.value),
child: ClipRRect(
borderRadius: BorderRadius.all(
Radius.circular(25.0)),
child: LimitedBox(
maxHeight: 50,
maxWidth: 50,
child: CircleAvatar(
backgroundColor:
color.withOpacity(0.5),
backgroundImage:
podcastLocal.avatarImage,
child: FutureBuilder<int>(
future:
getPodcastUpdateCounts(
podcastLocal.id),
initialData: 0,
builder: (context, snapshot) {
return snapshot.data > 0
? Align(
alignment: Alignment
.bottomCenter,
child: Container(
alignment:
Alignment
.center,
height: 10,
width: 40,
color: Colors
.black54,
child: Text('New',
style: TextStyle(
color: Colors
.red,
fontSize:
8,
fontStyle:
FontStyle
.italic)),
),
)
: Center();
}),
),
FutureBuilder<int>(
future: getPodcastUpdateCounts(
podcastLocal.id),
initialData: 0,
builder: (context, snapshot) {
return snapshot.data > 0
? Container(
alignment:
Alignment.center,
height: 10,
width: 40,
color: Colors.black54,
child: Text('New',
style: TextStyle(
color: Colors
.red,
fontSize: 8,
fontStyle:
FontStyle
.italic)),
)
: Center();
}),
],
),
),
),
);