dart Flutter circular涟漪effect：如何构建漂亮的材质底部NavigationBar

0md85ypi 于 2023-10-13 发布在 Flutter

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作为Google stadia app is made with flutter，我想知道他们是如何在BottomNavigationBar上实现更美丽的涟漪动画的。
范例：

他们是如何实现自定义涟漪动画的？
编辑：简单自定义底部导航项：

bottomNavigationBar: Container(
      height: 50,
      child: Row(
        children: <Widget>[
          Expanded(
            child: BottomItem(),
          ),
          Expanded(
            child: BottomItem(),
          ),
          Expanded(
            child: BottomItem(),
          ),
        ],
      )),

class BottomItem extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return InkWell(
      onTap: () {},
      child: Center(child: Icon(Icons.shop)),
    );
  }
}

dart

来源：https://stackoverflow.com/questions/61703352/flutter-circular-ripple-effect-how-to-build-beautiful-material-bottomnavigation

4条答案

按热度按时间

1cklez4t1#

您要查找的Ink是InkResponse而不是InkWell。InkWell用高亮填充整个可用空间，然后进行飞溅，但是，InkResponse使用您正在寻找的圆形效果进行飞溅，您需要稍微调整它，但这是代码示例：

Material(
  child: Container(
    child: Center(
       child: InkResponse(
            focusColor: Colors.transparent,
            hoverColor: Colors.transparent,
            highlightColor: Colors.transparent,
            onTap: () {},
            child: Padding(
              padding: const EdgeInsets.all(30),
              child: Icon(Icons.home),
            ),
          ),
        ),
      ),
    )

|墨水池|InkResponse默认值|自定义墨水响应|

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lh80um4z2#

Google Stadia应用示例：Image 1 Image 2
注意：使用Material Widget作为Row的父项，以便效果可以扩展到所有行宽，并限制条件为“半径：40”
另外，这个例子只是简单的代码，没有冒犯SOLID模式等

Container(
      width: double.infinity,
      height: 300,
      child: Material(
        color: Colors.transparent,
        child: Row(
          children: [
            Expanded(
              flex: 20,
              child: InkResponse(
                onTap: () {},
                //containedInkWell: false,
                splashFactory: InkRipple.splashFactory,
                radius: 40,
                splashColor: Colors.black12,
                highlightColor: Colors.transparent,
                child: Container(height: double.infinity, alignment: Alignment.center, child: Icon(Icons.search_rounded)),
              ),
            ),
            Expanded(
              flex: 20,
              child: InkResponse(
                onTap: () {},
                //containedInkWell: false,
                splashFactory: InkRipple.splashFactory,
                radius: 40,
                splashColor: Colors.black12,
                highlightColor: Colors.transparent,
                child: Container(height: double.infinity, alignment: Alignment.center, child: Icon(Icons.search_rounded)),
              ),
            ),
            Expanded(
              flex: 20,
              child: InkResponse(
                onTap: () {},
                //containedInkWell: false,
                splashFactory: InkRipple.splashFactory,
                radius: 40,
                splashColor: Colors.black12,
                highlightColor: Colors.transparent,
                child: Container(height: double.infinity, alignment: Alignment.center, child: Icon(Icons.search_rounded)),
              ),
            ),
            Expanded(
              flex: 20,
              child: InkResponse(
                onTap: () {},
                //containedInkWell: false,
                splashFactory: InkRipple.splashFactory,
                radius: 40,
                splashColor: Colors.black12,
                highlightColor: Colors.transparent,
                child: Container(height: double.infinity, alignment: Alignment.center, child: Icon(Icons.search_rounded)),
              ),
            ),
            Expanded(
              flex: 20,
              child: InkResponse(
                onTap: () {},
                //containedInkWell: false,
                splashFactory: InkRipple.splashFactory,
                radius: 40,
                splashColor: Colors.black12,
                highlightColor: Colors.transparent,
                child: Container(height: double.infinity, alignment: Alignment.center, child: Icon(Icons.search_rounded)),
              ),
            ),
          ],
        ),
      ),
    )

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unhi4e5o3#

你可能想在底部导航栏中使用InkResponse Class：）
从InkWell编辑到InkResponse。

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1rhkuytd4#

FIRST WAY
    

import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'BottomNavigationBar in style Material Design 2',
      theme: ThemeData(primarySwatch: Colors.indigo),
      home: BottomNavigationMaterial2(),
    );
  }
}

class BottomNavigationMaterial2 extends StatefulWidget {
  const BottomNavigationMaterial2({Key? key}) : super(key: key);

  @override
  State<BottomNavigationMaterial2> createState() =>
      _BottomNavigationMaterial2State();
}

class _BottomNavigationMaterial2State extends State<BottomNavigationMaterial3> {
  Widget _bottomNavItem() {
    return InkWell(
      onTap: () {},
      radius: 93,
      splashColor: Color.fromARGB(124, 108, 130, 255),
      highlightColor: Colors.white,
      splashFactory: InkRipple.splashFactory,
      child: Center(child: Icon(Icons.search, size: 25)),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      backgroundColor: Colors.white,
      bottomNavigationBar: Container(
        height: 80,
        child: Row(
          children: <Widget>[
            Container(child: _bottomNavItem(), width: 196),
            Container(child: _bottomNavItem(), width: 196),
          ],
        ),
      ),
    );
  }
}
                                 SECOND WAY
    

theme: ThemeData(splashFactory: InkRipple.splashFactory),

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dart Flutter circular涟漪effect：如何构建漂亮的材质底部NavigationBar

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