[英]Flutter Nested ListView in FutureBuilder with CheckboxListTyle Returns Constraint Error
您好,所以我遇到的問題是以下代碼
return Scaffold(
body: Padding(
padding: EdgeInsets.all(20),
child: Row(
children: [
const SizedBox(width: 15),
Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(widget.routine.title!, style: TextStyle(fontWeight: FontWeight.bold, fontSize: 20)),
SizedBox(height: 6),
Text(widget.routine.description!),
const Divider(
height: 10,
thickness: 2,
indent: 20,
endIndent: 0,
color: Colors.white,
),
FutureBuilder<List<RoutineTask>>(
future: _getRoutineTasks(widget.routine.id!),
builder: (BuildContext context, AsyncSnapshot<List<RoutineTask>> snapshot) {
if (snapshot.connectionState == ConnectionState.done) {
if(snapshot.data == null) {
return Center(
child: Text("No Tasks!"),
);
} else if (snapshot.hasError) {
return Center(
child: Text("An Error has Occured: ${snapshot.error}"),
);
} else {
return ListView.separated(
reverse: false,
itemCount: snapshot.data!.length,
scrollDirection: Axis.vertical,
shrinkWrap: true,
separatorBuilder: (BuildContext context, index) => const Divider(),
itemBuilder: (BuildContext context, index) {
return Container(
height: MediaQuery.of(context).size.height * 0.45,
decoration: BoxDecoration(
color: Colors.blue,
borderRadius: BorderRadius.circular(25)
),
child: CheckboxListTile(
value: snapshot.data![index].isComplete,
onChanged: (bool? value) {
setState(() {
snapshot.data![index].isComplete = value;
});
},
),
);
},
);
}
} else {
return Center(child: CircularProgressIndicator(),);
}
}
)
],
),
],
)),
);
正在返回錯誤
'package:flutter/src/rendering/viewport.dart':斷言失敗:第 1869 行 pos 16:'constraints.hasBoundedWidth':不正確。
我不知道如何解決它,一直在嘗試我能想到的每一種可能的組合。
編輯:這行得通。 嘗試遵循這種樹結構。
return Scaffold(
body: Row(
children:[
Text('ROWWWWWWWWWWW'),
Expanded(
child: Column(
children:[
Text('COLUMN'),
Expanded(
child: ListView(
children:[
Text('LISTVIEW'),
],
),
),
]
),
)
],
),
);
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