Android studio 导入项目报错：
Failed to resolve: com.android.support:support-core-ui:26.1.0
Add Google Maven repository and sync project
Open File
Show in Project Structure dialog
Failed to resolve: android.arch.lifecycle:runtime:1.0.0
Open File
Show in Project Structure dialog
Failed to resolve: support-v4
Open File
解决方法：
1、点击第二行： Add Google Maven repository and sync project
2、打开项目build.gradle，找到repositories
将
repositories {jcenter()
}
改为
repositories {mavenCentral()//如果 jcenter 很慢，尝试添加 mavenCentral 并调整到首行jcenter()
// maven { url 'https://maven.google.com' }maven { url "https://jitpack.io" }maven { url "https://raw.githubusercontent.com/HyphenateInc/Hyphenate-SDK-Android/master/repository" }google()}
同步即可
)
