flutter环境更新方法

常规更新方法：

运行:flutter upgrade，然后等待自动更新完成即可，

非常贵更新方法：

1.更新flutter代码库

找到flutter库的安装目录，运行git,同步拉取到最新的代码，

2.更新依赖

运行flutter doctor -v 自动下载更新依赖的库

Microsoft Windows [版本 10.0.17134.112]
(c) 2018 Microsoft Corporation。保留所有权利。

F:\JavaWorker\deheng\android\hemodialysis>flutter doctor -v
Checking Dart SDK version...
Downloading Dart SDK from Flutter engine 72c7a7567228cdaf8b7aa4a9e3d212ef9d4cc0ed...
Unzipping Dart SDK...
Building flutter tool...
Running pub upgrade...
Downloading package sky_engine...                            1.1s
Downloading common tools...                                  2.6s
Downloading windows-x64 tools...                             5.9s
Downloading android-arm-profile/windows-x64 tools...         1.2s
Downloading android-arm-release/windows-x64 tools...         0.8s
Downloading android-arm64-profile/windows-x64 tools...       0.9s
Downloading android-arm64-release/windows-x64 tools...       0.9s
Downloading android-x86 tools...                             4.8s
Downloading android-x64 tools...                             4.9s
Downloading android-arm tools...                             3.4s
Downloading android-arm-profile tools...                     1.8s
Downloading android-arm-release tools...                     2.2s
Downloading android-arm64 tools...                           1.9s
Downloading android-arm64-profile tools...                   1.8s
Downloading android-arm64-release tools...                   1.5s
Downloading android-arm-dynamic-profile tools...             1.9s
Downloading android-arm-dynamic-release tools...             2.8s
Downloading android-arm64-dynamic-profile tools...           2.0s
Downloading android-arm64-dynamic-release tools...           1.7s
[√] Flutter (Channel beta, v0.10.3-pre.3, on Microsoft Windows [Version 10.0.17134.112], locale zh-CN)
    • Flutter version 0.10.3-pre.3 at F:\ProgramFiles\flutter
    • Framework revision 233435c02a (42 minutes ago), 2018-11-30 10:00:27 +0800
    • Engine revision 72c7a75672
    • Dart version 2.1.0 (build 2.1.0-dev.9.4 f9ebf21297)

[√] Android toolchain - develop for Android devices (Android SDK 28.0.3)
    • Android SDK at F:\ProgramFiles\android\sdk
    • Android NDK location not configured (optional; useful for native profiling support)
    • Platform android-28, build-tools 28.0.3
    • ANDROID_HOME = F:\ProgramFiles\android\sdk
    • Java binary at: F:\ProgramFiles\android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)
    • All Android licenses accepted.

[√] Android Studio (version 3.2)
    • Android Studio at F:\ProgramFiles\android\Android Studio
    • Flutter plugin version 31.1.1
    • Dart plugin version 181.5656
    • Java version OpenJDK Runtime Environment (build 1.8.0_152-release-1136-b06)

[√] IntelliJ IDEA Ultimate Edition (version 2018.2)
    • IntelliJ at F:\ProgramFiles\JetBrains\IntelliJ IDEA 2018.2.4
    • Flutter plugin version 30.0.2
    • Dart plugin version 182.5124

[√] Connected device (2 available)
    • MI PAD 4  • 6074f4a0     • android-arm64 • Android 8.1.0 (API 27)
    • Che1 CL20 • f4e3fb7f933b • android-arm   • Android 4.4.4 (API 19)

• No issues found!

F:\JavaWorker\deheng\android\hemodialysis>