我想在用户访问我的应用程序时问候他们
我试过使用TimeOfDay,但它不起作用.
TimeOfDay now = TimeOfDay.now();
greetings(String greeting){
var greeting = now;
if(greeting <= '11: 59'){
return 'Morning';
} else if (greeting > '11:59' && <= '16:59'){
return 'Afternoon';
} else if (greeting > '16:59' && <= '23:59'){
return 'Afternoon';
} else {
return 'Morning';
}
}