Need to download the android studio editor
android studio download address
Download java JDK
java JDK environment configuration
Configure the environment
in the computer directory 控制面板\系统和安全\系统-advanced system settings-environment variables
系统变量added
变量名：JAVA_HOME
变量值：C:\Program Files\Java\jdk1.8.0_31
The variable value is the path
where you installed the JDK, 系统变量/Pathadd it later
;%JAVA_HOME%\bin;%JAVA_HOME%\jre\bin
Start cmdinput java, output a push configuration information have configured a success
Package local project
ionic build
My project is packaged and reported this error
Class extends value undefined is not a constructor or null
This problem is mainly the problem of installing dependencies, reinstalling dependencies
npm install
If you still report an error, use the yarninstallation
yarn install
Create androidproject
ionic cap add android
Automatically open android studio will download related dependencies
ionic cap open android
Connect your phone to USB, open it, 设置\开发人员选项\USB调试
select it Run on Multiple Devicesand it will automatically download the app to your phone