Dart รนับถอยหลังกระพือภาพเครื่องมือจับเวลา comment
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dart ตัวจับเวลา
Timer(Duration(seconds: 3), () {
print("Yeah, this line is printed after 3 second");
});
// repeatedly :
Timer.periodic(Duration(seconds: 5), (timer) {
print(DateTime.now());
});dart รนับถอยหลังกระพือภาพเครื่องมือจับเวลา comment
TweenAnimationBuilder<Duration>(
duration: Duration(minutes: 3),
tween: Tween(begin: Duration(minutes: 3), end: Duration.zero),
onEnd: () {
print('Timer ended');
},
builder: (BuildContext context, Duration value, Widget? child) {
final minutes = value.inMinutes;
final seconds = value.inSeconds % 60;
return Padding(
padding: const EdgeInsets.symmetric(vertical: 5),
child: Text('$minutes:$seconds',
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.black,
fontWeight: FontWeight.bold,
fontSize: 30)));
}),หน้าคล้ายกัน
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