警告信息 Flutter开发遇到如下警告Constructorsin'@immutable'classesshouldbedeclaredas'const'. 报错代码 classTaskWidgetextendsStatefulWidget{ finalStringtitle; finalboolisChecked; finalintorder; TaskWidget({ requiredthis.title, requiredthis.isChecked, requiredthis.order, Key?key, }):super(key:key); @override State&l...