Hello! I have installed android studio 3.0.1 in my laptop . I had some android projects in my desktop computer (with older version of android studio) But after installing latest version(3.0.1) of android studio in my laptop, i copied projects from my desktop to my laptop and opened that projects in my new android studio(3.0.1) But there appears an error: "Gradle project sync failed. Basic functionality(e.g editing, debeugging ) will not work properly"

And in the console a message appears: ""Unable to resolve dependency for: 'app @UnitTest/compileClassPath: could not found any version that matches com.android.support: support-v4:27.+.

I can't understand this error and tried to find solutions on internet but all in vain.

I opened gradle.wrapper.properties file and saw the distributionUrl= https\://services.gradle.org/distributions/gradle-4.1-all.zip
As according to distributionUrl the gradle version is 4.(i-e latest) then why i am seeing this error.

I also opened build.gradle file, in this file under dependencies section following is written:

  dependencies {
 compile 'com.android.support:support-v4:27.+'

how can I solve this? Please guide me . I am also giving photos of my "sdk tools" and project structure


Have something to contribute to this discussion? Please be thoughtful, detailed and courteous, and be sure to adhere to our posting rules.