[英]How to remove unnecessary padding/space below the progress indicator in percent_indicator Flutter
我想刪除圖像下方不必要的空間,如第 3 列所示。
CircularPercentIndicator(
radius: getProportionateScreenWidth(200),
lineWidth: 10,
animation: true,
arcType: ArcType.HALF,
percent: 0.5,
arcBackgroundColor: Colors.grey.withOpacity(0.3),
startAngle: 270,
circularStrokeCap: CircularStrokeCap.round,
progressColor: Theme.of(context).primaryColor,
footer: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Text(
'78',
),
Text(
'Dropped ~ 4 kg',
),
Text(
'72',
),
],
),
center: Column(
children: [
Text(
'now',
),
Text(
'74.5 Kg',
style: kTextStyle,),
],
),
),
注意:為簡單起見,已從代碼中刪除樣式 -此處提供完整代碼
這有點像黑客,但它應該表現得很好:
所以首先制作一個高度有限的大小框(例如你的圓的半徑),在里面放一個singlechildscrollview,這樣flutter就不會給出溢出錯誤。 但我們不想讓它可滾動,所以只需添加physics: NeverScrollableScrollPhysics()
。 然后,您可以在此小部件內放置 CircularPercentIndicator。
這是一個基本示例:
SizedBox(
height: 100,
width: 200,
child: SingleChildScrollView(
physics: NeverScrollableScrollPhysics(),
child: Container( //use CircularPercentIndicator widget here
height: 200,
width: 200,
color: Colors.grey,
child: Column(
children: [
Text('Placeholder'),
Text('Placeholder'),
Text('Placeholder'),
Text('Placeholder'),
Text('Placeholder'),
Text('Placeholder'),
Text('Placeholder'),
Text('Placeholder'),
Text('Placeholder'),
],
),
),
),
),
所以你的代碼應該是這樣的:
Column(
children: [
SizedBox(
height: getProportionateScreenWidth(200),
width: 2 * getProportionateScreenWidth(200),
child: SingleChildScrollView(
physics: NeverScrollableScrollPhysics(),
child: CircularPercentIndicator(
radius: getProportionateScreenWidth(200),
lineWidth: 10,
animation: true,
arcType: ArcType.HALF,
percent: 0.5,
arcBackgroundColor: Colors.grey.withOpacity(0.3),
startAngle: 270,
circularStrokeCap: CircularStrokeCap.round,
progressColor: Theme.of(context).primaryColor,
center: Column(
children: [
Text(
'now',
),
Text(
'74.5 Kg',
style: kTextStyle,),
],
),
),
),
),
Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
Text(
'78',
),
Text(
'Dropped ~ 4 kg',
),
Text(
'72',
),
],
),
],
)
注意:我將 Row 小部件從 CircularPercentIndicator 小部件中移出,並將其放在 SizedBox 的正下方,否則 Row 將不可見
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