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<h1 itemprop="name"><a class="article-title" href="./posts/%E7%BD%91%E6%A0%BC%E7%BB%84%E4%BB%B6/">网格组件</a></h1>
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GridView.count 常用属性 crossAxisCount: 每一行（如果滚动方向是垂直的话）或每一列（如果滚动方向是水平的话）有多少个子组件。这是必须指定的参数。 childAspectRatio: 子组件宽高比，默认值为 1.0，即正方形。你可以通过调整这个值来改变子组件的大小。例如
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<h1 itemprop="name"><a class="article-title" href="./posts/%E5%88%97%E8%A1%A8%E7%BB%84%E4%BB%B6/">列表组件</a></h1>
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ListView 常用属性讲解 1. children 3. separatorBuilder 4. scrollDirection 5. physics 6. shrinkWrap 7. padding 8. itemExtent ListTile 使用 自定义垂直列表组件 自定义水平列表 实现水平列表商品效果 ListView.builder 使用 ListView 常用属性讲解 ListView 是 Flutter 中用于展示滚动列表的一个非常常用的小部件。以下是一些常用的 ListView 属性及其说明：
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<h1 itemprop="name"><a class="article-title" href="./posts/%E5%86%85%E7%BD%AE%E5%9B%BE%E6%A0%87%E5%92%8C%E8%87%AA%E5%AE%9A%E4%B9%89%E5%9B%BE%E6%A0%87%E7%9A%84%E4%BD%BF%E7%94%A8/">内置图标和自定义图标的使用</a></h1>
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<a href="./posts/%E5%86%85%E7%BD%AE%E5%9B%BE%E6%A0%87%E5%92%8C%E8%87%AA%E5%AE%9A%E4%B9%89%E5%9B%BE%E6%A0%87%E7%9A%84%E4%BD%BF%E7%94%A8/" class="article-date">
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使用内置图标 import 'package:flutter/material.dart'; void main() { runApp( MaterialApp( home: Scaffold( appBar: AppBar(title: const Text("App Title"), backgroundColor: Colors.red), body: const MyHomePage(), ), ), ); } class MyHomePage extends StatelessWidget { const MyHomePage({super.key}); @override Widget build(BuildContext context) { return const Center( child: Column( children: [ Icon(Icons.home, size: 40), SizedBox(height: 20), Icon(Icons.add_a_photo, size: 40), SizedBox(height: 20), Icon(Icons.ac_unit), ], ), ); } } 效果： 使用阿里巴巴图标库 1. 下载图标字体文件 选中图标加入购物车 打开购物车，
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<h1 itemprop="name"><a class="article-title" href="./posts/%E5%9B%BE%E7%89%87%E7%BB%84%E4%BB%B6/">图片组件</a></h1>
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从网络加载图片 常用属性 对齐方式, alignment 缩放 scale 平铺方式 fit 重复方式 repeat 圆形图片 Container 方式 ClipOval 方式 ClipOval 介绍 读取本地图片 从网络加载图片 child: Image.network("https://profile-avatar.csdnimg.cn/cbaf0093c7ea46a89fd3780f1a250fbe_a141210104.jpg"), 默认保持比例缩放： class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { return Center( child: Container( width: 30, height: 300, color: Colors.green, child: Image.network("https://profile-avatar.csdnimg.cn/cbaf0093c7ea46a89fd3780f1a250fbe_a141210104.jpg"), ), ); } } 效果: 常用
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<h1 itemprop="name"><a class="article-title" href="./posts/container%E4%BD%BF%E7%94%A8/">Container 使用</a></h1>
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Container 圆角 阴影 渐变 线性渐变 圆形渐变 扫描渐变 位移 水平方向或者垂直方向移动 旋转 缩放 完整示例 Container 它可以包含其他 Widget，并允许你控制其布局、大小、边距、填充、装饰等属性 Container 有许多属性，主要包括： alignmen
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<h1 itemprop="name"><a class="article-title" href="./posts/%E5%AD%A6%E4%B9%A0%E7%AC%94%E8%AE%B0/">Dart 学习笔记</a></h1>
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字符串 多行字符串 String str1 = """ 你好 dart """; print(str1); 字符串拼接 String str2 = "你好"; String str3 = "dart"; print("$str2 $str3"); 列表 指定类型创建 var l1=<String>["1","2"] var l2=<int>[1,2,3]; 移除 new List（） 新版本不支持 new 创建列表 List.filled 创建固定长度列表 // 创建长度是 5，每个元素的值是
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<h1 itemprop="name"><a class="article-title" href="./posts/js%E5%87%BD%E6%95%B0/">js 函数</a></h1>
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<time datetime='2024-07-09T07:25:41.000+00:00' itemprop="datePublished">2024-07-09</time>
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js 中的函数，既不关心参数个数，也不关心参数类型 函数的参数在内部表现为一个数组。函数被调用时总会接收一个数组，但函数并不关心这个数组中包含什么。如果数组中什么也没有，那没问题；如果数组的元素超出了要求，
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