您必须像这样更改TabControlller
1 *创建TabController实例
TabController _tabController;
initState方法中的2 *使用此
@override
void initState() {
super.initState();
_tabController = TabController(vsync: this, length: 3);
}
3 *将Mixin添加到_HomeState
class _HomeState extends State<Home> with SingleTickerProviderStateMixin {....}
4 *将TabController分配给TabBar
TabBar(
controller: _tabController,
tabs: _yourTabsHere,
),
5 *将控制器传递给您的页面
TabBarView(
controller: _tabController,
children:<Widget> [
Page1(tabController:_tabController),
Page2(tabController:_tabController),
Page3(tabController:_tabController),
];
6 *从Page1调用tabController.animateTo（）
class Page1 extends StatefulWidget {
final TabController tabController
Page1({this.tabController});
....}
class _Page1State extends State<Page1>{
....
onButtonClick(){
widget._tabController.animateTo(index); //index is the index of the page your are intending to (open. 1 for page2)
}
}
希望能帮助到你
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