关于flutter:Flutter-开发从-0-到-1五源码

Flutter 开发从 0 到 1

今天开始又要下班了，你的假期工作实现如何啊？因为平时加班太多了，切实挤不出更多工夫，从开始想用 Flutter《Flutter 开发从 0 到 1（一）需要与筹备》写一个残缺的 APP 曾经过来三个月了，然而我没有遗记，这个国庆工夫我终于实现了。Flutter 的确弱小，不止跨平台，还反对桌面利用，包含 Window、macOS、Linux，以及 Web 利用，真正一套代码，全平台反对，野心可见一斑。

以上我尝试过了，打包成了 APK、macOS 桌面利用、Web 利用没问题，只能用两个字形容 Flutter：牛皮，明天先分享这个 APP 源码。

大体性能如下：

源码

公号「吴小龙同学」回复关键字“AndBlog”获取源码下载链接。

后续更新，这个链接都能够拜访，来，咱们一起持续探讨 Flutter。

如何运行

拿到源码，能够以 Web Server (web) 或 Chrome (web)运行代码，如果你是 MacBook Pro，你还能够以 iPhone 11 Pro Max (mobile)或 macOS (desktop)运行，运行到 Android 手机，开发的时候卡在了 Running Gradle task‘assembleDebug’…或者‘assembleRelease’，这里记录下，这时候个别在下载 Gradle 并配置我的项目，所以可能呈现的问题个别有两种：

报错一：

> Failed to apply plugin [id 'com.android.internal.version-check']
   > Minimum supported Gradle version is 6.1.1. Current version is 5.6.2. If using the gradle wrapper, try editing the distributionUrl in /Users/wuxiaolong/AndroidStudioProjects/flutter_andblog/android/gradle/wrapper/gradle-wrapper.properties to gradle-6.1.1-all.zip

Gradle 目录 windows 个别在 C:\\Users\\ 用户名 \\.gradle\\ 下，macOS 个别在/Users/ 用户名 /.gradle 下。

如果 Android Studio 开发，该门路能够在 ”File | Settings | Build, Execution, Deployment | Build Tools | Gradle” 中批改。

我应用的是“gradle-6.1.1”，能够在官网 https://gradle.org/releases/ 页面下载对应的“complete”安装包，放在 /Users/wuxiaolong/.gradle/wrapper/dists/gradle-6.1.1-all/cfmwm155h49vnt3hynmlrsdst目录下即可。

报错二：

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:desugarDebugFileDependencies'.
> Could not resolve all files for configuration ':app:debugRuntimeClasspath'.
   > Could not download arm64_v8a_debug-1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7.jar (io.flutter:arm64_v8a_debug:1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7)
      > Could not get resource 'https://storage.googleapis.com/download.flutter.io/io/flutter/arm64_v8a_debug/1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7/arm64_v8a_debug-1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7.jar'.
         > Could not HEAD 'https://storage.googleapis.com/download.flutter.io/io/flutter/arm64_v8a_debug/1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7/arm64_v8a_debug-1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7.jar'.
            > Connect to storage.googleapis.com:443 [storage.googleapis.com/34.64.4.16, storage.googleapis.com/34.64.4.112, storage.googleapis.com/34.64.4.80] failed: connect timed out
   > Could not download x86_debug-1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7.jar (io.flutter:x86_debug:1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7)
      > Could not get resource 'https://storage.googleapis.com/download.flutter.io/io/flutter/x86_debug/1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7/x86_debug-1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7.jar'.
         > Could not HEAD 'https://storage.googleapis.com/download.flutter.io/io/flutter/x86_debug/1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7/x86_debug-1.0.0-ee76268252c22f5c11e82a7b87423ca3982e51a7.jar'.
            > Connect to storage.googleapis.com:443 [storage.googleapis.com/34.64.4.16, storage.googleapis.com/34.64.4.112, storage.googleapis.com/34.64.4.80] failed: connect timed out

解决如下：

关上我的项目中 build.gradle 文件

buildscript {
    repositories {//google()
        //jcenter()
        maven {url 'https://maven.aliyun.com/repository/google'}
        maven {url 'https://maven.aliyun.com/repository/jcenter'}
        maven {url 'http://maven.aliyun.com/nexus/content/groups/public'}
        maven {url "http://download.flutter.io"}
    }

    dependencies {classpath 'com.android.tools.build:gradle:4.0.1'}
}

allprojects {
    repositories {//google()
        //jcenter()
        maven {url 'https://maven.aliyun.com/repository/google'}
        maven {url 'https://maven.aliyun.com/repository/jcenter'}
        maven {url 'http://maven.aliyun.com/nexus/content/groups/public'}
        maven {url "http://download.flutter.io"}
    }
}