Android studio升级到3.1.1遇到的问题

1.Minimum supported Gradle version is 4.1. Current version is 4.0.1

各方面的配置都是正确的,在terminal中调用命令gradle assemble，总是报这个错误，找不到原因

E:\direct\as\Bingo>gradle assemble

* Where:
Build file 'E:\direct\as\Bingo\app\build.gradle' line: 1

* What went wrong:
A problem occurred evaluating project ':app'.
> Failed to apply plugin [id 'com.android.application']
   > Minimum supported Gradle version is 4.1. Current version is 4.0.1. If using the gradle wrapper, try editing the distributionUrl in E:\direct\as\Bingo\gradle\wrapper\gradle-wrapper.properties to gradle-4.1-all.zip

最后试了一下

E:\direct\as\Bingo>gradle -version

------------------------------------------------------------
Gradle 4.0.1
------------------------------------------------------------

Build time:   2017-07-07 14:02:41 UTC
Revision:     38e5dc0f772daecca1d2681885d3d85414eb6826

Groovy:       2.4.11
Ant:          Apache Ant(TM) version 1.9.6 compiled on June 29 2015
JVM:          1.8.0_25 (Oracle Corporation 25.25-b02)
OS:           Windows 8.1 6.3 amd64


E:\direct\as\Bingo>gradlew -version

------------------------------------------------------------
Gradle 4.4
------------------------------------------------------------

Build time:   2017-12-06 09:05:06 UTC
Revision:     cf7821a6f79f8e2a598df21780e3ff7ce8db2b82

Groovy:       2.4.12
Ant:          Apache Ant(TM) version 1.9.9 compiled on February 2 2017
JVM:          1.8.0_25 (Oracle Corporation 25.25-b02)
OS:           Windows 8.1 6.3 amd64

原来是因为配置了环境变量（windows），所以，以后还是不要配置gradle的环境变量了，用项目根目录底下的gradlew命令就好

微信图片_20180425111312.png

微信图片_20180425113324.png

2.Could not find com.android.tools.build:gradle:3.1.1

* What went wrong:
A problem occurred configuring root project 'MLottery'.
> Could not resolve all files for configuration ':classpath'.
   > Could not find com.android.tools.build:gradle:3.1.1.
     Searched in the following locations:
         https://jcenter.bintray.com/com/android/tools/build/gradle/3.1.1/gradle-3.1.1.pom
         https://jcenter.bintray.com/com/android/tools/build/gradle/3.1.1/gradle-3.1.1.jar
     Required by:
         project :

gradle新版本需要依赖google()仓库

微信截图_20180425162339.png

android支持库的新版本也需要google()仓库