直接看代码案例快速入手Flutter
本文介绍Container, SizeBox。
Container 是一个更通用的布局组件，提供了多种布局和样式属性，而 SizedBox 是一个专门用于设置子组件大小的简单组件
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Container
Container(
width: 200.0,
height: 50.0,
color: Colors.blue,
margin: const EdgeInsets.all(5.0), // 设置外边距
padding: const EdgeInsets.all(10.0), // 设置内边距
child: const Text('Hello, Flutter!'),
),
Container(
width: 200.0,
height: 50.0,
margin: const EdgeInsets.all(5.0), // 设置外边距
padding: const EdgeInsets.all(10.0), // 设置内边距
decoration: BoxDecoration(
border: Border.all(
color: Colors.red,
width: 2.0,
),
borderRadius: BorderRadius.circular(10.0),
color: Colors.blue,
),
child: const Text('Hello, Flutter!'),
),
Container(
decoration: const BoxDecoration(
gradient: LinearGradient(
colors: [Colors.red, Colors.blue],
begin: Alignment.topLeft,
end: Alignment.bottomRight,
),
),
child: const Text('Hello, Flutter!'),
),
Container(
decoration: BoxDecoration(
boxShadow: [
BoxShadow(
color: Colors.black.withOpacity(0.5),
blurRadius: 10.0,
offset: const Offset(0, 5),
),
],
),
child: const Text('Hello, Flutter!'),
),
Container(
alignment: Alignment.center, // 将子组件置于容器中央
child: const Text('Hello, Flutter!'),
)
SizeBox
SizedBox(
width: 100,
height: 100,
child: Container(color: Colors.red),
),
SizedBox(
width: 100,
child: Container(color: Colors.red, height: 50),
),
Column(
children: [
Container(color: Colors.red, height: 50),
const SizedBox(height: 10), // 添加 10 像素高的空白空间
Container(color: Colors.green, height: 50),
],
),
