ionic build android时gradle错误

BUILD FAILED

Total time: 27.317 secs
* What went wrong:
A problem occurred configuring root project 'android'.
> Could not resolve all dependencies for configuration ':classpath'.
   > Could not resolve com.android.tools.build:gradle:1.5.0.
     Required by:
         :android:unspecified
      > Could not GET 'https://repo1.maven.org/maven2/com/android/tools/build/gradle/1.5.0/gradle-1.5.0.pom'.
         > Connection to https://repo1.maven.org refused

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.
Error: Error code 1 for command: cmd with args: /s,/c,"D:\gitrepo\private\bitbucket\mfewordcard2\platforms\android\gradlew cdvBuil
dDebug -b D:\gitrepo\private\bitbucket\mfewordcard2\platforms\android\build.gradle -Dorg.gradle.daemon=true -Pandroid.useDeprecate
dNdk=true"
 

可以通过如下解决：

在 ionic platform add android 之后，在ionic build android 之前，请手工修改 <Project-dir>\platforms\android目录 和 <Project-dir>\platforms\android\CordovaLib 目录下的 build.gradle文件，
把
mavenCentral()
改成
jcenter {url "http://jcenter.bintray.com/"}