说明

将Android应用作为系统内置遇到一些问题：

1. 一个是使用Android源码的mmm命令生成的JNI名字和使用NDK生成的JNI的名字是不一样的；
2. 另外就是AndroidManifest.xml中的targetSDKVersion不能低于运行版本。

JNI

Android mmm命令

......

No private recovery resources for TARGET_DEVICE sabresd_6dq

make: Entering directory `/home/myzr/myandroid'

Import includes file: out/target/product/sabresd_6dq/obj/SHARED_LIBRARIES/shutdown_intermediates/import_includes

target thumb C: shutdown <= /home/myzr/myandroid/packages/apps/Shutdown/jni/shutdown.c

target SharedLib: shutdown (out/target/product/sabresd_6dq/obj/SHARED_LIBRARIES/shutdown_intermediates/LINKED/shutdown.so)

target Symbolic: shutdown (out/target/product/sabresd_6dq/symbols/system/lib/shutdown.so)

Export includes file: /home/myzr/myandroid/packages/apps/Shutdown/jni/Android.mk -- out/target/product/sabresd_6dq/obj/SHARED_LIBRARIES/shutdown_intermediates/export_includes

target Strip: shutdown (out/target/product/sabresd_6dq/obj/lib/shutdown.so)

Install: out/target/product/sabresd_6dq/system/lib/shutdown.so

make: Leaving directory `/home/myzr/myandroid'

NDK 生成 JNI

$ $NDK/ndk-build

Android NDK: WARNING: APP_PLATFORM android-18 is larger than android:minSdkVersion 8 in ./AndroidManifest.xml

[armeabi] Compile thumb  : shutdown <= shutdown.c

[armeabi] SharedLibrary  : libshutdown.so

[armeabi] Install        : libshutdown.so => libs/armeabi/libshutdown.so

shell命令修改文件名

root@android:/ # mv /system/lib/shutdown.so /system/lib/libshutdown.so

targetSDKVersion

<uses-sdk

    android:minSdkVersion="8"

    android:targetSdkVersion="18" />