Latest gradle
Download the latest gradle-3.3-all.zip from
http://gradle.org/gradle-download/
1.download from Complete Distribution link
2.open in android studio file ->settings ->gradle
3.open the path and paste the downloaded zip folder gradle-3.3 in that folder
4.change your gradle 2.8 to gradle 3.3 in file ->settings ->gradle
5.Or you can change your gradle wrapper in the project
6.edit YourProject\gradle\wrapper\gradle-wrapper.properties file and edit the field distributionUrl in to
distributionUrl= https://services.gradle.org/distributions/gradle-3.0-all.zip
shown in android studio's gradle files