GitHub Demo地址： https://github.com/ling lemon/lxf _ flutter _ demo
这里使用iOS样式底部导航栏上的控件CupertinoTabScaffold
classmyappextendsstatefulwidget { const myapp } { key？ (key ) ) :super ) key:key； @ overridestatemyappcreatestate (=dtdxtg )； } classdtdxtgextendsstatemyapp { @ overridevoidinitstate () { super.initState )； } @ overridewidgetbuild (buildcontextcontext ) returnmaterialapp ) title3360'flutterdemo '， theme:themedata ) primata、home : cupertinotabscaffold (tabbar : cupertino tabbar (current index 3360 )， items : (_ bottomnavigationbaritem _ bottomnavigationbaritem (icons.settings，'设置'，bhdwbl，)，tabbuilder: ) ()、)、)； } bottomnavigationbaritem _ bottomnavigationbaritem (icon data icon，string title (returnbottomnavigationbaritem (icon 33366666 )