主题：PageView 和 GetX
我在将PageView widget 上的控件与HomeView 模块分离时遇到问题。我有一个GlobalController 及其各自的GlobalBinding，它们在打开HomeView 时被实例化。我想将setPage(int page) 方法带到GlobalController，这最终会使HomeView 的PageView 更改页面。我不知道如何将PageController 从PageView 变为GlobalController 以使其正常工作。我应该如何进行？
【问题讨论】：
标签： flutter model-view-controller flutter-pageview flutter-getx
像这样的东西？ 我在入职时使用综合浏览量
class Onboard{
final headTitle;
final secondarytitle;
final discription;
final pngimage;
Onboardslist(this.headTitle, this.secondarytitle, this.discription, this.pngimage);
}
那么对于控制器
class OnboardController extends GetxController{
var selectedPagexNumber = 0.obs;
bool get isLastPage => selectedPagexNumber.value == onBoardPages.length -1;
var pageControll = PageController();
forwardAct()
{
if(isLastPage) Get.offNamedUntil(signin, (route)=> false);
else pageControll.nextPage(duration: 300.milliseconds, curve: Curves.ease);
}
List<Onboardslist> onBoardPages =
[
Onboardslist("title",
"short description",
"long description",
imageString),
Onboardslist("title",
"short description",
"long description",
imageString),
Onboardslist("title",
"short description",
"long description",
imageString),
Onboardslist("title",
"short description",
"long description",
imageString)
];
}
那么对于我所做的视图就是这样
class Onboarding extends StatelessWidget {
final yourController= OnboardController();
@override
Widget build(BuildContext context) {
SizeXGet().init(context);
return Scaffold(
backgroundColor: decent_white,
appBar: AppBarCustom(
title: 'Skip',
button: ()=>Get.offNamedUntil(signin,(route)=>false),
),
body: WillPopScope(
onWillPop: () async => false,
child: SafeArea(
child: Stack(
children: [
PageView.builder(
controller: yourController.pageControll,
onPageChanged: yourController.selectedPagexNumber,
itemCount: yourController.onBoardPages.length,
itemBuilder: (context, index)
=>Padding(
padding: const EdgeInsets.only(left: 10,right: 10),
child: Container(
child: SingleChildScrollView(
physics: BouncingScrollPhysics(),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Container(
height: getHeight(150),
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
mainAxisAlignment: MainAxisAlignment.center,
children: [
Padding(
padding: const EdgeInsets.only(left: 20,right: 20),
child: Text(yourController.onBoardPages[index].headTitle,
style: TextStyle(
color: darkish_color,
fontSize: getHeight(20),
fontFamily: 'Metropolis-SemiBold' ,
fontWeight: FontWeight.bold
),),
),
SizedBox(height: 15,),
Padding(
padding: const EdgeInsets.only(left: 50,right: 50),
child: Text(yourController.onBoardPages[index].secondarytitle,
style: TextStyle(
color: not_sopure_black,
fontSize: getHeight(26),
fontFamily: 'Metropolis-Bold' ,
fontWeight: FontWeight.bold
),
),
),
SizedBox(height: 15,),
Padding(
padding: const EdgeInsets.only(left: 40,right: 40),
child: Text(yourController.onBoardPages[index].discription,
style: TextStyle(
color: not_sopure_black,
fontSize: getHeight(15),
fontFamily: 'Metropolis-Regular' ,
),
),
),
],
),
),
SizedBox(height: 15,),
Image.asset(yourController.onBoardPages[index].pngimage),
],
),
),
),
),
),
],
),
),
),
bottomNavigationBar: BottomAppBar(
color: Colors.transparent,
elevation: 0,
child: Container(
height: 75,
width: MediaQuery.of(context).size.width,
child: Padding(
padding: const EdgeInsets.only(left: 25,right:25,),
child: Container(
width: MediaQuery.of(context).size.width,
child: Stack(
children: [
Align(
alignment: Alignment.centerLeft,
child: Container(
child: Row(
children: List.generate(yourController.onBoardPages.length,
(index)=>Obx(()=>
AnimatedContainer(
duration: Duration(milliseconds: 200),
margin: EdgeInsets.only(right: 5),
height: 10,
width: yourController.selectedPagexNumber.value == index ? 20 : 10,
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(60),
color: yourController.selectedPagexNumber.value == index
? darkish_color
: not_sopure_black,),
),
)),
),
),
),
Align(
alignment: Alignment.centerRight,
child: Container(
width: 130,
height: 52,
child: RaisedButton(
elevation: 0,
onPressed: yourController.forwardAct,
splashColor: not_sopure_black,
color: darkish_color,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(100)
),
child: Obx(() =>
Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text(yourController.isLastPage ? 'Next' : 'Next',
style: TextStyle(
color: Colors.white,
fontFamily: 'Metropolis-Semibold',
fontSize: 16,
),
),
],
),
),
),
),
)
],
),
),
),
),
),
);
}
}
【讨论】：