How to solve Could not find any version that matches com.android.support:appcompat-v7:27.+?

Question

Android

Hello.
Trying to build my first android app

ОС Windwows 10,
Intellige IDEA 2017.2
JDK jdk1.8.0_161
Android API 27 Platform
Gradle 4.6
Android SDK 25.5.2

installed packages

return error

Error:A problem occurred configuring project ':app'.
> Could not resolve all dependencies for configuration ':app:_debugApkCopy'.
   > Could not find any version that matches com.android.support:appcompat-v7:27.+.
     Versions that do not match:
         26.0.0-alpha1
         25.3.1
         25.3.0
         25.2.0
         25.1.1
         + 31 more
     Required by:
         project :app
   > Could not find any version that matches com.android.support:design:27.+.
     Versions that do not match:
         26.0.0-alpha1
         25.3.1
         25.3.0
         25.2.0
         25.1.1
         + 21 more
     Required by:
         project :app

How to solve this problem?

Answer 1

in the app/build.gradle file we change

//    compile 'com.android.support:appcompat-v7:27.+'
    compile 'com.android.support:appcompat-v7:27.0.0'

and in the top build.gradle
add to group
buildscript {
repositories {

mavenLocal()
        mavenCentral()
        maven {                                  // <-- Add this
            url 'https://maven.google.com/'
            name 'Google'
        }

and in
allprojects {
repositories {

maven {
            url "https://maven.google.com"
        }