cordova可以做到一次编写到处运行各个平台（android、ios、wp、bb、firefoxos、web等几乎所有平台）
手上只有一个android手机 ，安装的时候没有那么顺利，第一大问题就是网络问题，需要FQ
按照官方提示http://cordova.apache.org/#getstarted
1、首先安装node.js
参考：http://www.cnblogs.com/zhishuai/articles/8138046.html
curl --silent --location https://rpm.nodesource.com/setup_8.x | sudo bash - sudo yum -y install nodejs
2、安装cordova
npm install -g cordova
3、创建一个应用、添加android平台
cordova create MyApp
cd MyApp
cordova platform add
备注：查看平台命令
cordova platform
出现如下平台
Installed platforms:
android 7.0.0
Available platforms:
browser ~5.0.1
ios ~4.5.4
osx ~4.0.1
windows ~5.0.0
www ^3.12.0
4、编译android版本的时候问题来了 ，提示android环境没有安装
cordova run android
Android Studio project detected
(node:30829) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): CordovaError: Failed to find 'ANDROID_HOME' environment variable. Try setting it manually.
Failed to find 'android' command in your 'PATH'. Try update your 'PATH' to include path to valid SDK directory.
(node:30829) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
[app@localhost test]$ cordova run android
Android Studio project detected
(node:19379) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): CordovaError: Failed to find 'ANDROID_HOME' environment variable. Try setting it manually.
Failed to find 'android' command in your 'PATH'. Try update your 'PATH' to include path to valid SDK directory.
(node:19379) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
[app@localhost test]$ echo $ANDROID_HOME
各种环境变量找不到
1、java没装
2、android没装
------------------------------安装android开发依赖环境----------------------------------------------------
1、安装 java
这里下载jdk：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
http://download.oracle.com/otn-pub/java/jdk/8u151-b12/e758a0de34e24606bca991d704f6dcbf/jdk-8u151-linux-x64.rpm?AuthParam=1514477816_4cd93965dc16fe41a06d861aeab9a333
rpm -ivh jdk-8u151-linux-x64.rpm
设置环境变量
vim ～/.bash_profile
添加：
export JAVA_HOME=/usr/java/jdk1.8.0_151
保存退出后 使环境变量生效
source ~/.bash_profile
2、安装android
下载android-studio
翻墙速度有点慢 花了好一会时间 理论上国内有下载好的 之后我也会分享到我的百度云
链接: https://pan.baidu.com/s/1qXTRMfq 密码: jisc
https://developer.android.com/studio/index.html#downloads
解压并运行
android-studio/bin/studio.sh
启动会自动下载 sdk ，但是默认只下载最新的sdk 我的cordova就不能用 需要手动下载对应老一个版本的sdk 。android-studio左上角有一个下载箭头+android的一个图标，点击可以勾选下载对应的sdk
设置环境变量
默认下载到当前用户下$HOME/Android/Sdk
设置环境变量
vim ～/.bash_profile
添加：
export ANDROID_HOME=$HOME/Android/Sdk
保存退出后 使环境变量生效
source ~/.bash_profile
-----------------------------------接着cordova---------------------------------------------------------
cordova run android
会默认下载各种环境，最后下载完之后会生成一个apk 最终生成在 工程名test/platforms/android/app/build/outputs/apk/debug/app-debug.apk
我的输出：
...
BUILD SUCCESSFUL in 25s
47 actionable tasks: 47 executed
Built the following apk(s):
/home/app/src/test/platforms/android/app/build/outputs/apk/debug/app-debug.apk
ANDROID_HOME=/home/app/Android/Sdk
JAVA_HOME=/usr/java/jdk1.8.0_151
No target specified and no devices found, deploying to emulator
(node:24975) UnhandledPromiseRejectionWarning: Unhandled promise rejection (rejection id: 1): CordovaError: No emulator images (avds) found.
1. Download desired System Image by running: /home/app/Android/Sdk/tools/android sdk
2. Create an AVD by running: /home/app/Android/Sdk/tools/android avd
HINT: For a faster emulator, use an Intel System Image and install the HAXM device driver
(node:24975) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
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在下载好的sdk里面有一个/home/app/Android/Sdk/platform-tools 文件夹 里面有adb命令
可以把adb添加到环境变量里面，就可以直接使用了
连上手机，进入apk目录
adb install app-debug.apk
就可以在手机上看到了
之后就可以在工程目录下面有个www文件夹里面写html+js内容了。
一次编译 至少在android上能跑了……