升级到最新的 SDK 版本 1.20.4 后，运行/调试 Flutter 应用程序的速度非常慢 [英] Running/Debugging Flutter app very slow after upgrading to latest SDK version 1.20.4

问题描述

升级到最新的稳定版本 1.20.4 后我遇到了这个问题早些时候我使用 Flutter 1.12.13+hotfix.5 并且调试/运行速度足够好.有没有其他人也面临这个问题?或者任何人都可以通过提出一些解决方案或原因来帮助解释为什么会发生这种情况?我正在使用 Windows 10 机器.运行 flutter doctor -v 产生以下输出

I'm facing this problem after upgrading to latest stable version 1.20.4 Earlier I was using Flutter 1.12.13+hotfix.5 and debug/run speed was good enough. Is anyone else also facing this issue? Or could anyone help by suggesting some solutions or reasons as to why this is happening? I am using a Windows 10 machine. Running flutter doctor -v yields the following output

    • Flutter version 1.20.4 at D:\flutter
    • Framework revision fba99f6cf9 (8 days ago), 2020-09-14 15:32:52 -0700
    • Engine revision d1bc06f032
    • Dart version 2.9.2

 
[√] Android toolchain - develop for Android devices (Android SDK version 29.0.2)
    • Android SDK at C:\Users\amani\AppData\Local\Android\Sdk
    • Platform android-29, build-tools 29.0.2
    • ANDROID_HOME = C:\Users\amani\AppData\Local\Android\Sdk
    • Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)
    • All Android licenses accepted.

[√] Android Studio (version 3.5)
    • Android Studio at C:\Program Files\Android\Android Studio
    • Flutter plugin version 42.1.1
    • Dart plugin version 191.8593
    • Java version OpenJDK Runtime Environment (build 1.8.0_202-release-1483-b03)

[√] VS Code (version 1.49.1)
    • VS Code at C:\Users\amani\AppData\Local\Programs\Microsoft VS Code
    • Flutter extension version 3.14.1

[√] Connected device (1 available)
    • Android SDK built for x86 (mobile) • emulator-5554 • android-x86 • Android 10 (API 29) (emulator)

• No issues found!```

推荐答案

通过删除 Flutter SDK 然后用新下载的 SDK 替换它解决了这个问题.好像是升级导致SDK目录下的一些文件损坏了.

Solved the issue by deleting Flutter SDK and then replacing it with newly downloaded SDK. It seems that upgrade caused some files to get corrupted in the SDK directory.

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