What went wrong: Could not resolve all files for configuration ':app:debugCompileClasspath'. > Could not find any version that matches com.android.support:support-annotations:27.+. Versions that do not match: 26.0.0-alpha1 25.3.1 25.3.0 25.2.0 25.1.1 + 28 more Searched in the following locations: file:/E:/Soft/AndroidSDK/android-sdk-windows/extras/m2repository/com/android/support/support-annotations/maven-metadata.xml file:/E:/Soft/AndroidSDK/android-sdk-windows/extras/m2repository/com/android/support/support-annotations/ file:/E:/Soft/AndroidSDK/android-sdk-windows/extras/google/m2repository/com/android/support/support-annotations/maven-metadata.xml file:/E:/Soft/AndroidSDK/android-sdk-windows/extras/google/m2repository/com/android/support/support-annotations/ file:/E:/Soft/AndroidSDK/android-sdk-windows/extras/android/m2repository/com/android/support/support-annotations/maven-metadata.xml
加一个maven库在build.gradle的
buildscript { repositories {和
allprojects { repositories {maven{ url 'https://maven.aliyun.com/repository/google'}
