Flutter 登录页-07

源码下载

依赖包

  • google_fonts

知识点

半透明文本框

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TextFormField(
style: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w500,
fontFamily: "SFUIText",
),
decoration: InputDecoration(
border: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
enabledBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
focusedBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
errorBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
fillColor: Colors.black.withOpacity(0.4),
filled: true,
labelStyle: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w500,
color: Colors.white,
fontFamily: "SFUIText",
),
labelText: "Password",
prefixIcon: const Icon(
Icons.lock_outline,
color: Colors.white,
),
),
obscureText: true,
),

通栏按钮

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SizedBox(
height: 50,
width: double.infinity,
child: ElevatedButton(
onPressed: () {},
child: const Text(
"Sign in",
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.w500,
color: Colors.white,
fontFamily: "SFUIText",
),
),
style: ElevatedButton.styleFrom(
primary: const Color(0xfff05522),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(2),
),
),
),
),

代码实现

main.dart
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import 'package:flutter/material.dart';
import 'package:login_07/homepage.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: 'My App',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: const HomePage(),
);
}
}
homepage.dart
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import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';

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

@override
State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
final _formKey = GlobalKey<FormState>();

@override
Widget build(BuildContext context) {
return Container(
decoration: BoxDecoration(
image: DecorationImage(
image: const AssetImage("assets/background.png"),
fit: BoxFit.fitHeight,
colorFilter: ColorFilter.mode(Colors.black.withOpacity(0.6), BlendMode.darken),
),
),
child: Scaffold(
backgroundColor: Colors.transparent,
body: SingleChildScrollView(
padding: EdgeInsets.symmetric(horizontal: 25),
child: Form(
key: _formKey,
child: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
const SizedBox(height: 89),
Center(
child: Text(
"Sign in",
style: GoogleFonts.roboto(
fontSize: 32,
color: Colors.white,
),
),
),
const SizedBox(height: 137),
TextFormField(
style: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w500,
fontFamily: "SFUIText",
),
decoration: InputDecoration(
border: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
enabledBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
focusedBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
errorBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
fillColor: Colors.black.withOpacity(0.4),
filled: true,
labelStyle: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w500,
color: Colors.white,
fontFamily: "SFUIText",
),
labelText: "Username",
prefixIcon: const Icon(
Icons.person_outline,
color: Colors.white,
),
),
),
const SizedBox(height: 16),
TextFormField(
style: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w500,
fontFamily: "SFUIText",
),
decoration: InputDecoration(
border: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
enabledBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
focusedBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
errorBorder: OutlineInputBorder(
borderSide: const BorderSide(color: Colors.transparent),
borderRadius: BorderRadius.circular(2),
),
fillColor: Colors.black.withOpacity(0.4),
filled: true,
labelStyle: const TextStyle(
fontSize: 15,
fontWeight: FontWeight.w500,
color: Colors.white,
fontFamily: "SFUIText",
),
labelText: "Password",
prefixIcon: const Icon(
Icons.lock_outline,
color: Colors.white,
),
),
obscureText: true,
),
const SizedBox(height: 200),
SizedBox(
height: 50,
width: double.infinity,
child: ElevatedButton(
onPressed: () {},
child: const Text(
"Sign in",
style: TextStyle(
fontSize: 16,
fontWeight: FontWeight.w500,
color: Colors.white,
fontFamily: "SFUIText",
),
),
style: ElevatedButton.styleFrom(
primary: const Color(0xfff05522),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(2),
),
),
),
),
const SizedBox(height: 23),
const Text(
"Forgot Password?",
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w600,
color: Colors.white,
fontFamily: "SFUIText",
),
),
const SizedBox(height: 14),
const Text(
"Sign Up",
style: TextStyle(
fontSize: 14,
fontWeight: FontWeight.w600,
color: Colors.white,
fontFamily: "SFUIText",
),
),
],
),
),
),
),
);
}
}