try 使用此代码遍历列表:
List li=["-","\\","|","/"];
for (var i=0; i<li.length; i++) {
print(li[i]);
}
关于动画,请执行以下操作:
HTML
<p id="test">
test
</p>
省道
import 'dart:html';
import 'dart:async';
main() async {
List li = ["-", "\\", "|", "/"];
for (var i = 0; i < 400000000; i++) {
querySelector('#test').text = li[i % 4];
(await new Future.delayed(const Duration(seconds: 1)));
}
}