[英]How to make a rounded border in just one side of a container in Flutter?
我需要在容器的一側繪制圓形邊框。 問題在於這種方法:
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.only(bottomLeft: Radius.circular(4.sp), bottomRight: Radius.circular(4.sp)),
border: Border(bottom: BorderSide(width: 2.sp, color: Color.fromARGB(255, 237, 237, 237))),
),
拋出此錯誤:
flutter: ══╡ EXCEPTION CAUGHT BY RENDERING LIBRARY ╞═════════════════════════════════════════════════════════
flutter: The following assertion was thrown during paint():
flutter: A borderRadius can only be given for a uniform Border.
flutter: The following is not uniform:
flutter: BorderSide.color
flutter: BorderSide.width
flutter: BorderSide.style
像這樣添加一個帶有 Box Shadow 的容器:
Container(
decoration: BoxDecoration(
boxShadow: [
BoxShadow(
color: Colors.grey.shade100,
spreadRadius: 1,
blurRadius: 0,
offset: Offset(0, 0), // changes position of shadow
),
],
borderRadius: BorderRadius.only(
topLeft: Radius.circular(30.0),
topRight: Radius.circular(30.0),
),
),
)
似乎Flutter 還不支持它。
您可以通過堆棧執行所需的操作(不過,在使用此代碼后要洗手):
Stack(children: [
Container(
width: double.infinity,
height: 8.sp,
decoration: BoxDecoration(
borderRadius: BorderRadius.all(Radius.circular(4.sp)),
border: Border.all(width: 2.sp, color: Color.fromARGB(255, 237, 237, 237)),
),
),
Container(
width: double.infinity,
height: 3.sp,
color: Colors.white, //or your bg color
),
])
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