电脑配置.png
使用镜像
- 将如下环境变量加入到用户环境变量中
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
配置过Java环境变量的朋友应该比较清楚如何配置，这里也简单的贴一下过程:
- 终端输入如下命令，回车则会打开配置文件
open -e .bash_profile
命令.png
-
将路径贴到bash_profile文件中
效果.png 生效
执行如下命令
source .bash_profile
image.png
- 检查是否生效，使用如下命令，输出了设置的地址，则代表成功
image.png
获取Flutter SDK
我这里是通过github下载的，在终端输入如下命令:
git clone -b stable https://github.com/flutter/flutter.git
下载过程:
promote:~ xxx$ git clone -b stable https://github.com/flutter/flutter.git
Cloning into 'flutter'...
remote: Enumerating objects: 12, done.
remote: Counting objects: 100% (12/12), done.
remote: Compressing objects: 100% (12/12), done.
remote: Total 231804 (delta 0), reused 3 (delta 0), pack-reused 231792
Receiving objects: 100% (231804/231804), 96.54 MiB | 317.00 KiB/s, done.
Resolving deltas: 100% (177395/177395), done.
Checking out files: 100% (4207/4207), done.
- 更新环境变量
在之前的bash_profile中添加flutter路径
如果原先就存在PATH则用";"作为分隔符拼接到后面
仍要执行source .bash_profile生效(这里的xxx是你电脑用户名)
export PATH=${PATH}:/Users/xxx/flutter/bin:$PATH
- 运行 flutter doctor命令
该命令检查你的环境并在命令行窗口中显示报告
promote:~ xxx$ flutter doctor
Downloading Dart SDK from Flutter engine af51afceb8886cc11e25047523c4e0c7e1f5d408...
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
100 200M 100 200M 0 0 4028k 0 0:00:51 0:00:51 --:--:-- 5102k
Building flutter tool...
Flutter assets will be downloaded from https://storage.flutter-io.cn. Make sure
you trust this source!
Downloading Material fonts... 1.2s
Downloading Gradle Wrapper... 0.2s
Downloading android-arm-profile/darwin-x64 tools... 1.4s
Downloading android-arm-release/darwin-x64 tools... 0.9s
Downloading android-arm64-profile/darwin-x64 tools... 1.1s
Downloading android-arm64-release/darwin-x64 tools... 1.0s
Downloading android-x64-profile/darwin-x64 tools... 2.1s
Downloading android-x64-release/darwin-x64 tools... 3.6s
Downloading package sky_engine... 1.5s
Downloading common tools... 8.7s
Downloading common tools... 5.7s
Downloading darwin-x64 tools... 7.5s
Downloading libimobiledevice... 0.2s
Downloading usbmuxd... 0.2s
Downloading libplist... 0.2s
Downloading openssl... 0.5s
Downloading ideviceinstaller... 0.1s
Downloading ios-deploy... 0.2s
Downloading libzip... 0.2s
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, v1.12.13+hotfix.9, on Mac OS X 10.15.2 19C57,
locale zh-Hans-CN)
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
✗ Android license status unknown.
Try re-installing or updating your Android SDK Manager.
See https://developer.android.com/studio/#downloads or visit
https://flutter.dev/setup/#android-setup for detailed instructions.
[✓] Xcode - develop for iOS and macOS (Xcode 11.3)
[!] Android Studio (version 3.5)
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
[!] IntelliJ IDEA Ultimate Edition (version 2018.2)
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
[✓] Connected device (1 available)
! Doctor found issues in 3 categories.
promote:~ xxx$
第一次运行flutter doctor命令，它会下载它自己的依赖项并自行编译，缺失的依赖需要安装一下，安装完成后再运行flutter doctor命令来验证是否安装成功
这里flutter doctor命令执行时，最后报! Doctor found issues in 3 categories，共三个问题，在输出日志里可以看到这三个问题的具体描述
这里使用Android Studio，对于IntelliJ IDEA的问题忽略不解决，这样还有两个问题
对于如下问题，是Android Studio缺少插件
✗ Flutter plugin not installed; this adds Flutter specific functionality.
✗ Dart plugin not installed; this adds Dart specific functionality.
在Android Studio的Plugins里搜索然后安装(仅下载Flutter即可，包含Dart)
image.png
- 对于最后一个问题
✗ Android license status unknown
终端执行:
flutter doctor --android-licenses
报错:
promote:~ xxx$ flutter doctor --android-licenses
Exception in thread "main" java.lang.NoClassDefFoundError: javax/xml/bind/annotation/XmlSchema
at com.android.repository.api.SchemaModule$SchemaModuleVersion.(SchemaModule.java:156)
at com.android.repository.api.SchemaModule.(SchemaModule.java:75)
at com.android.sdklib.repository.AndroidSdkHandler.(AndroidSdkHandler.java:81)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:73)
at com.android.sdklib.tool.sdkmanager.SdkManagerCli.main(SdkManagerCli.java:48)
Caused by: java.lang.ClassNotFoundException: javax.xml.bind.annotation.XmlSchema
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:583)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:521)
... 5 more
对于上面的报错，都在讲已安装的java版本过高...实在找不到其他解决办法，本人也只能重新安装java版本为1.8了
- 删除java
java当前版本: java -version
promote:~ xxx$ java -version
java version "12.0.2" 2019-07-16
sudo rm -fr /Library/Internet\ Plug-Ins/JavaAppletPlugin.plugin
sudo rm -fr /Library/referencesPanes/JavaControlPanel.prefpane
sudo rm -rf /Library/Java/JavaVirtualMachines/jdk-12.0.2.jdk
- 安装java1.8 官网下载或者清华大学开源镜像站
官网.png
镜像站.png
下载好JavaSDK后双击安装
设置环境变量
终端输入如下命令查找安装路径:
/usr/libexec/java_home -V
image.png
JAVA_HOME=/Library/Java/JavaVirtualMachines/adoptopenjdk-8.jdk/Contents/Home
PATH=$JAVA_HOME/bin:$PATH:.;export PATH=${PATH}:/Users/xxx/flutter/bin:$PATH
CLASSPATH=$JAVA_HOME/lib/tools.jar:$JAVA_HOME/lib/dt.jar:.
export JAVA_HOME
export PATH
export CLASSPATH
export PUB_HOSTED_URL=https://pub.flutter-io.cn
export FLUTTER_STORAGE_BASE_URL=https://storage.flutter-io.cn
PS: 不要忘记执行 source .bash_profile
- 再次执行flutter doctor
[!] Android toolchain - develop for Android devices (Android SDK version 29.0.3)
! Some Android licenses not accepted. To resolve this, run: flutter doctor
--android-licenses
已有提示:
run: flutter doctor --android-licenses
然后在终端里根据提示一路y下去，直到提示:
All SDK package licenses accepted
end...
image.png
从某个地方看到有人讲: 可以通过环境变量将JAVA_HOME的位置指向Android Studio 里自带的Java去，AS自带Java8，通过这种方式就可以解决了，有兴趣的可以试试
参考:
卸载Java
安装Java
搭建Flutter开发环境
安装Flutter踩坑记
最新Mac安装Flutter全过程