在AOSP源代码中添加系统应用程序通过App源代码/正在工作的AS项目

编程问答 2022-06-10

问题描述

我正在尝试通过应用程序源代码而不是apk在AOSP源代码中添加应用程序。我的应用程序是我在Android Studio中开发的简单的hello world应用程序。我已经写了它的Android.mk，并将其放在packages/app/myapplication/Android.mk中。 aosp_source_code/build/target/product/handheld_system.mk中已注册的应用程序包名称 我在Android.mk文件中犯了任何错误？还是我错过了任何步骤。

这是我的Android.mk

的代码 
include $(CLEAR_VARS)

LOCAL_PACKAGE_NAME := Myapplication
LOCAL_MODULE_TAGS := optional
LOCAL_PRIVILEGED_MODULE := true
LOCAL_CERTIFICATE := platform

LOCAL_PRIVATE_PLATFORM_APIS := true

LOCAL_SRC_FILES := $(call all-java-files-under,src/main/java)
LOCAL_RESOURCE_DIR := $(LOCAL_PATH)/src/main/res
LOCAL_MANIFEST_FILE := src/main/AndroidManifest.xml

LOCAL_DEX_PREOPT := false
LOCAL_PROGUARD_ENABLED := disabled

LOCAL_USE_AAPT2 := true

LOCAL_STATIC_ANDROID_LIBRARIES := \
    android-arch-lifecycle-extensions \
    android-support-v7-recyclerview \
    android-support-v7-appcompat \
    android-support-constraint-layout
include $(BUILD_PACKAGE)

错误 

packages/apps/Myapplication/src/main/res/layout/content_main.xml:8: error: attribute defaultNavHost (aka com.myapplication:defaultNavHost) not found.
packages/apps/Myapplication/src/main/res/layout/content_main.xml:8: error: attribute navGraph (aka com.myapplication:navGraph) not found.
packages/apps/Myapplication/src/main/res/navigation/nav_graph.xml:2: error: attribute startDestination (aka com.myapplication:startDestination) not found.
packages/apps/Myapplication/src/main/res/navigation/nav_graph.xml:14: error: attribute destination (aka com.myapplication:destination) not found.
packages/apps/Myapplication/src/main/res/navigation/nav_graph.xml:24: error: attribute destination (aka com.myapplication:destination) not found.
error: Failed linking file resources.
11:57:34 ninja Failed with: exit status 1

#### Failed to build some targets (4 seconds)

解决方法

正如我在build.gradle文件中看到的那样，您可能需要在Android.mk中链接androidx.appcompat:appcompat，androidx.constraintlayout:constraintlayout，androidx.navigation:navigation-ui和androidx.navigation:navigation-fragment

示例

LOCAL_STATIC_ANDROID_LIBRARIES := \
    androidx.appcompat_appcompat \
    androidx-constraintlayout_constraintlayout \
    androidx-navigation_navigation-ui \
    androidx-navigation_navigation-fragment \
    ...

但是androidx-navigation_navigation-ui和androidx-navigation_navigation-fragment是否可用取决于您的AOSP构建系统。您应该亲自检查以确保这些库可用（通常位于prebuilts目录中）。如果这些库不可用，则需要手动下载它们，然后将它们手动添加到AOSP构建系统中。

androidandroidandroid-sourceembeddedoperating-system