完成基础学习

README.md

@@ -41,3 +41,11 @@ samples, guidance on mobile development, and a full API reference.
 - 写布局前，先把结构列好，用函数拆分，用_bulid开头，表示私有布局函数
 - 在使用elevatedbutton时，使用style将样式还原，在外面套一层Container作为装饰，更方便配置
 - 使用Navigator.pushReplacement 替换路由
+## 表单
+- 表单TextField通过textfield.decoration进行装饰
+- 使用prefixIcon、suffixIcon设置前置、后置图标
+- 一些简单的验证可以放在TextField的onChanged中
+- 注意在涉及到更新状态时，使用setState
+## 按钮组件
+- 抽取公共组件，放在commont里
+- 公共组件外露的属性，使用final修饰，并在构造函数中

android/gradle/wrapper/gradle-wrapper.properties

@@ -3,5 +3,5 @@ distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists
-distributionUrl=file:///C:/Users/24811/.gradle/wrapper/dists/gradle-6.7-all.zip
+# distributionUrl=file:///C:/Users/24811/.gradle/wrapper/dists/gradle-6.7-all.zip
-# distributionUrl=file:///D:/Gradle/.gradle/wrapper/dists/gradle-6.7-all.zip
+distributionUrl=file:///D:/Gradle/.gradle/wrapper/dists/gradle-6.7-all.zip

assets/images/files.txt

@@ -1,2 +1,9 @@
+static const iconFavouritePng = 'assets/images/icon_favourite.png';
+static const iconLockPng = 'assets/images/icon_lock.png';
+static const iconMapPng = 'assets/images/icon_map.png';
+static const iconOffersPng = 'assets/images/icon_offers.png';
+static const iconOrderPng = 'assets/images/icon_order.png';
+static const iconPaymentPng = 'assets/images/icon_payment.png';
+static const iconUserPng = 'assets/images/icon_user.png';
 static const logoPng = 'assets/images/logo.png';
 static const welcomePng = 'assets/images/welcome.png';

lib/common/assets.dart

@@ -1,4 +1,12 @@
 class AssetsImages {
+static const iconFavouritePng = 'assets/images/icon_favourite.png';
+static const iconLockPng = 'assets/images/icon_lock.png';
+static const iconMapPng = 'assets/images/icon_map.png';
+static const iconOffersPng = 'assets/images/icon_offers.png';
+static const iconOrderPng = 'assets/images/icon_order.png';
+static const iconPaymentPng = 'assets/images/icon_payment.png';
+static const iconUserPng = 'assets/images/icon_user.png';
 static const logoPng = 'assets/images/logo.png';
 static const welcomePng = 'assets/images/welcome.png';
+
 }

lib/common/button copy.dart

@@ -0,0 +1,42 @@
+import 'package:flutter/material.dart';
+
+class ButtonWidget extends StatelessWidget {
+  const ButtonWidget({
+    Key? key, this.text, this.width, this.height, this.radius, this.onPressed,
+  }) : super(key: key);
+
+  final String? text;
+  final double? width;
+  final double? height;
+  final double? radius;
+  final void Function()? onPressed;
+
+
+  @override
+  Widget build(BuildContext context) { 
+    //套一层Container，可以做很多事，比如设置尺寸
+    return Container(
+      //不写默认撑开
+      height: height ?? double.infinity,
+      width: width ?? double.infinity,
+      //需要裁切，不然没有圆角
+      clipBehavior: Clip.antiAlias,
+      decoration: BoxDecoration(
+        borderRadius: BorderRadius.circular(radius ?? 32),
+      ),
+      child: ElevatedButton(
+        onPressed: onPressed,
+        style: ButtonStyle(
+            elevation: MaterialStateProperty.all(0),
+            //设置最小值为0，是的尺寸为children尺寸
+            minimumSize: MaterialStateProperty.all(Size.zero)),
+        child: Text(text ?? "",
+            style: const TextStyle(
+              fontSize: 16,
+              color: Colors.white,
+              fontWeight: FontWeight.w300,
+            )),
+      ),
+    );
+  }
+}

lib/common/button.dart

@@ -0,0 +1,45 @@
+import 'package:flutter/material.dart';
+
+class ButtonWidget extends StatelessWidget {
+  const ButtonWidget({
+    Key? key,
+    this.text,
+    this.width,
+    this.height,
+    this.radius,
+    this.onPressed,
+  }) : super(key: key);
+
+  final String? text;
+  final double? width;
+  final double? height;
+  final double? radius;
+  final void Function()? onPressed;
+
+  @override
+  Widget build(BuildContext context) {
+    //套一层Container，可以做很多事，比如设置尺寸
+    return ElevatedButton(
+      onPressed: onPressed,
+      style: ButtonStyle(
+        elevation: MaterialStateProperty.all(0),
+        //设置最小值为0，是的尺寸为children尺寸
+        minimumSize: MaterialStateProperty.all(Size(
+          width ?? double.infinity,
+          height ?? double.infinity,
+        )),
+        shape: MaterialStateProperty.all(
+          RoundedRectangleBorder(
+            borderRadius: BorderRadius.circular(radius?? 32),
+          ),
+        ),
+      ),
+      child: Text(text ?? "",
+          style: const TextStyle(
+            fontSize: 16,
+            color: Colors.white,
+            fontWeight: FontWeight.w300,
+          )),
+    );
+  }
+}

lib/main.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
-
+import 'pages/splash.dart';
-import 'pages/login.dart';
 
 
 void main() {
@@ -13,7 +12,7 @@ class MyApp extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
-      home: const LoginPage(),
+      home: const SplashPage(),
       debugShowCheckedModeBanner: false,
       theme: ThemeData(
         //设置主题色

lib/pages/login.dart

@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:flutter_qucikstart/common/button.dart';
 
 import '../common/app_colors.dart';
 import '../common/assets.dart';
@@ -11,9 +12,133 @@ class LoginPage extends StatefulWidget {
 }
 
 class _LoginPageState extends State<LoginPage> {
-  //登录表达
+  //检查账号输入是否有效
+  bool isUserNameValid = false;
+  //登录表单
   Widget _buildForm() {
-    return Container();
+    return Container(
+      padding: const EdgeInsets.fromLTRB(20, 70, 20, 35),
+      decoration: BoxDecoration(
+        color: Colors.white,
+        borderRadius: BorderRadius.circular(35),
+      ),
+      child: Column(
+        crossAxisAlignment: CrossAxisAlignment.start,
+        children: [
+          //Username or Email
+          const Text(
+            'Username or Email',
+            style: TextStyle(
+              fontSize: 15,
+              fontWeight: FontWeight.w300,
+              color: Color(0xFF838383),
+            ),
+          ),
+          const SizedBox(height: 16),
+          TextField(
+            //Onchange时检测输入是否有效
+            onChanged: (value) {
+              setState(() {
+                isUserNameValid = value.isNotEmpty && value.length > 6;
+              });
+            },
+            decoration: InputDecoration(
+              hintText: '@',
+              prefixIcon: Image.asset(
+                AssetsImages.iconUserPng,
+                width: 23,
+                height: 23,
+              ),
+              suffixIcon: isUserNameValid == true
+                  ? const Icon(
+                      Icons.done,
+                      size: 24,
+                      color: Colors.green,
+                    )
+                  : null,
+            ),
+          ),
+
+          const SizedBox(height: 36),
+
+          //password
+          const Text(
+            'Password',
+            style: TextStyle(
+              fontSize: 15,
+              fontWeight: FontWeight.w300,
+              color: Color(0xFF838383),
+            ),
+          ),
+          const SizedBox(height: 16),
+          TextField(
+            //隐藏输入
+            obscureText: true,
+            decoration: InputDecoration(
+              hintText: '6 digits',
+              prefixIcon: Image.asset(
+                AssetsImages.iconLockPng,
+                width: 19,
+                height: 26,
+              ),
+              suffixIcon: TextButton(
+                onPressed: (() {}),
+                child: const Text(
+                  'Forget?',
+                  style: TextStyle(
+                    fontSize: 15,
+                    fontWeight: FontWeight.w500,
+                    color: Color(0xFF0274BC),
+                  ),
+                ),
+              ),
+            ),
+          ),
+
+          const SizedBox(height: 30),
+
+          //Sign In btn
+          ButtonWidget(
+            text: "Sign In",
+            height: 57,
+            onPressed:(){}
+          ),
+
+
+          const SizedBox(height: 16),
+
+          //Don't have an account? Sign up
+          Row(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              //文字
+              const Text(
+                "Don't have an account?",
+                style: TextStyle(
+                  fontSize: 15,
+                  fontWeight: FontWeight.w300,
+                  color: Color(0xFF171717),
+                ),
+              ),
+              //文字按钮
+              TextButton(
+                onPressed: (() {}),
+                child: const Text(
+                  "Sign up",
+                  style: TextStyle(
+                    fontSize: 15,
+                    fontWeight: FontWeight.bold,
+                    color: Color(0xFF0274bc),
+                  ),
+                ),
+              )
+            ],
+          )
+
+          //end
+        ],
+      ),
+    );
   }
 
   //主视图 拆成函数

lib/pages/welcome.dart

@@ -1,12 +1,14 @@
 import 'package:flutter/material.dart';
 
 import '../common/assets.dart';
+import '../common/button.dart';
+import '../pages/login.dart';
 
 class WelcomePage extends StatelessWidget {
   const WelcomePage({Key? key}) : super(key: key);
 
   //按钮组
-  Widget _bulidBtns() {
+  Widget _bulidBtns(BuildContext context) {
     return Padding(
       padding: const EdgeInsets.symmetric(horizontal: 20),
       child: Row(
@@ -26,28 +28,13 @@ class WelcomePage extends StatelessWidget {
           const Spacer(),
 
           //getstarted按钮
-          //套一层Container，可以做很多事，比如设置尺寸
+          ButtonWidget(
-          Container(
+            text: "Get Started",
-            height: 42,
             width: 139,
-            //需要裁切，不然没有圆角
+            height: 42,
-            clipBehavior: Clip.antiAlias,
+            radius: 32,
-            decoration: BoxDecoration(
+            onPressed: () => Navigator.push(context,
-              borderRadius: BorderRadius.circular(32),
+                MaterialPageRoute(builder: ((context) => const LoginPage()))),
-            ),
-            child: ElevatedButton(
-              onPressed: (() {}),
-              style: ButtonStyle(
-                  elevation: MaterialStateProperty.all(0),
-                  //设置最小值为0，是的尺寸为children尺寸
-                  minimumSize: MaterialStateProperty.all(Size.zero)),
-              child: const Text('Get Started',
-                  style: TextStyle(
-                    fontSize: 16,
-                    color: Colors.white,
-                    fontWeight: FontWeight.w300,
-                  )),
-            ),
           ),
         ],
       ),
@@ -69,7 +56,7 @@ class WelcomePage extends StatelessWidget {
     );
   }
 
-  Widget _buildView() {
+  Widget _buildView(BuildContext context) {
     return Column(
       mainAxisAlignment: MainAxisAlignment.center,
       children: [
@@ -91,7 +78,7 @@ class WelcomePage extends StatelessWidget {
           height: 70,
         ),
         //按钮组
-        _bulidBtns(),
+        _bulidBtns(context),
 
         //end
       ],
@@ -101,7 +88,7 @@ class WelcomePage extends StatelessWidget {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
-      body: Center(child: _buildView()),
+      body: Center(child: _buildView(context)),
     );
   }
 }