Flutter筆記-安裝及開發第一Flutter應用

摘要： Visit flutter official site 訪問Flutter官方網站 Flutter Main page Flutter install guide Choose system you are using. You need a macbook if you ...

Visit flutter official site 訪問Flutter官方網站

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Flutter install guide

Choose system you are using. You need a macbook if you want to test flutter on ios.

Some problem when installing Flutter 安裝過程遇到過的問題

I am an Android engineer, so I have android IDE. After I installed the Flutter and Dart plugin, there is no "New Flutter Project" option in IDE.

I search on the Google. I found this stackoverflow

# flutter upgrade

I run that command twice. At first time, it found two "Android Studio". The lower version has not install the flutter plugin, so I remove it. At second time, I get following message:

我運行了兩次這個命令。第一次發現存在沒有安裝Flutter外掛舊的AS版本，我將其移除。再次執行獲得到以下資訊：

Upgrading Flutter from /Library/Flutter/flutter...
Already up to date.

Upgrading engine...
Already up-to-date.

Flutter 0.9.4 • channel beta • https://github.com/flutter/flutter.git
Framework • revision f37c235c32 (4 weeks ago) • 2018-09-25 17:45:40 -0400
Engine • revision 74625aed32
Tools • Dart 2.1.0-dev.5.0.flutter-a2eb050044

Running "flutter packages upgrade" in kiipu...14.6s

Running flutter doctor...
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel beta, v0.9.4, on Mac OS X 10.13.6 17G65, locale zh-Hans-CN)
[!] Android toolchain - develop for Android devices (Android SDK 27.0.3)
! Some Android licenses not accepted.To resolve this, run: flutter doctor --android-licenses
[!] iOS toolchain - develop for iOS devices (Xcode 9.4.1)
✗ libimobiledevice and ideviceinstaller are not installed. To install, run:
brew install --HEAD libimobiledevice
brew install ideviceinstaller
✗ ios-deploy not installed. To install:
brew install ios-deploy
[✓] Android Studio (version 3.2)
[!] VS Code (version 1.28.2)
[✓] Connected devices (1 available)

! Doctor found issues in 3 categories.

You can find the method to resolve the problem(Solution is also provided in above stackoverflow link ):

從資訊可以找到可能的解決方案（stackoverflow 也有人提出此解決方案）:

! Some Android licenses not accepted.To resolve this, run: flutter doctor --android-licenses

# flutter doctor --android-licenses

Flutter Github Issue#23086

Problems when developing the first app:

安裝 建立第一個Flutter App的官方文件 建立引用

在增加新的第三方庫時遇到了下面的問題：

# flutter --no-color packages get

Blocked at the state Running "flutter packages get" for a long time and never succeed.

一直卡在flutter packages get很久，並且不成功！

被牆了，你懂得。官方解決方案參考 Using-Flutter-in-China