SDK Manager中Extras文件夹中缺少Google Play服务 [英]Google Play Services Missing in Extras folder in SDK Manager
Google Play服务缺少SDK Manager中的Extras文件夹 [英]Google Play Services Missing from Extras folder in SDK Manager
android \\ sdk \\ extras \\ android \\ m2repository \\ com \\ android \\ support文件夹中的库有什么用途 [英]What is the use of libraries in android\sdk\extras\android\m2repository\com\android\support folder
错误:AOSP 中缺少 android-support-constraint-layout 但 prebuilts/sdk/current/extras 有 [英]Error: missing android-support-constraint-layout in AOSP but prebuilts/sdk/current/extras has it