1.运行ionic cordova build android 时报错:could not find an installed version of gradle either in android studio. 2.问题原因:cordova在6.4.0(cordova-android在6.1.2)之后,会要求安装Gradle,基于Gradle来编译.打包android. 3.解决办法: 1)去Gradle官网:https://gradle.org/install 2)下载Gradle:htt