（1）若內建為可解除安裝的APK，可以無需解壓出lib直接編譯就可以

具體參考http://blog.csdn.net/a462533587/article/details/46380795

（2）若內建為system APP，上述blog也有兩種方式：

方法一：

如下例，在Android.mk中新增並配置變數（注意路徑對應）：

LOCAL_PREBUILT_JNI_LIBS = \
@lib/armeabi-v7a/libcryptox.so \
@lib/armeabi-v7a/libfb.so 

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注意前面的 @符號，@識別符號會將apk中的so抽離出來，拷貝到對應編譯後的apk目錄；

78ifdef my_prebuilt_jni_libs
 
79# Files like @lib/<abi>/libfoo.so (path inside the apk) are JNI libs embedded prebuilt apk;
80# Files like path/to/libfoo.so (path relative to LOCAL_PATH) are prebuilts in the source tree.
81my_embedded_prebuilt_jni_libs := $(patsubst @%,%, \
82    $(filter @%, $(my_prebuilt_jni_libs)))

LOCAL_PREBUILT_JNI_LIBS = \
 
lib/armeabi-v7a/libcryptox.so \
lib/armeabi-v7a/libfb.so 當so較多可以遍歷每個so,使用如下語句###清空臨時變數JNI_LIBS JNI_LIBS:=###當前目錄遞迴搜尋$(foreach FILE,$(shell find $(LOCAL_PATH)/lib/ -name *.so), $(eval JNI_LIBS += $(FILE)))###獲取搜尋檔案目錄集（相對目錄）LOCAL_PREBUILT_JNI_LIBS:= $(subst $(LOCAL_PATH),,$(JNI_LIBS))

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帶so的APK在編譯過程中會先解壓縮如out/target/product/msm8953_64/obj/APPS/LauncherB_intermediates/uncompressedlibs/lib/armeabi/libfacialproc_jni.so

intermediates := $(call local-intermediates-dir）這條語句就可以代替out/target/product/msm8953_64/obj/APPS/LauncherB_intermediates

然後再遍歷這個目錄下所有so，就可以copy到與編譯後的APK同級目錄下了