错误：AOSP中缺少android-support-constraint-layout，但是prebuilts / sdk / current / extras有它

Question

我的Android源存储库已经在android-support-constraint-layout.jar和android-support-constraint-layout-solver.jar分别具有两个jar文件prebuilts/sdk/current/extras/constraint-layout/libs/和prebuilts/sdk/current/extras/constraint-layout-solver/。现在，我在packages / app中有一个应用，其中有一个app/src/main/Android.mk：

LOCAL_STATIC_ANDROID_LIBRARIES := \
...
android-support-constraint-layout \
android-support-constraint-layout-solver

仍然，编译Android后出现以下错误：

error: FirstApp (APPS android-x86) missing android-support-constraint-layout (JAVA_LIBRARIES android-x86)
You can set ALLOW_MISSING_DEPENDENCIES=true in your environment if this is intentional, but that may defer real problems until later in the build.
error: FirstApp (APPS android-x86) missing android-support-constraint-layout-solver (JAVA_LIBRARIES android-x86)

除了第一个，this link中的所有方法都无法在AOSP中添加约束布局。

Answer 1

我在适用于Android-Oreo（v8.1）的AOSP的一个软件包中添加了约束布局。