Android Studio報錯：ERROR: Failed to resolve: com.android.support:appcompat-v7:28.0.+
今天新導入一個Project項目，上來就報錯找不到類庫，Google狠起來自己的兒子都編譯不過了麼？吐血，如下：
ERROR: Failed to resolve: com.android.support:appcompat-v7:28.0.+
Add Google Maven repository and sync project
Show in Project Structure dialog
Affected Modules: app
ERROR: Failed to resolve: com.android.support:recyclerview-v7:28.0.0
Add Google Maven repository and sync project
Show in Project Structure dialog
Affected Modules: app
ERROR: Failed to resolve: com.android.support.test.espresso:espresso-core:2.2.2
Add Google Maven repository and sync project
Show in Project Structure dialog
Affected Modules: app
嘗試各種Clear、Rebuild無果後放棄了，還得去StackOverflow尋找良方，果然不負衆望，找到了答案：
Failed to resolve: com.android.support:appcompat-v7:28.0
項目級Gradle中repositories的jcenter()下一行添加如下maven代碼即可：
allprojects {
repositories {
jcenter()
maven {// here we go!!
url 'https://maven.google.com'
}
}
}
再編譯，完美運行。
原來 Android Support Library dependencies 都是從 Android SDK Manager 裏面下載的，現在新版本必須從 Google 的 Maven 倉庫裏面去下載。