Native Service creation process learning notes

a. Create the folder native service in the vendor / common / directory
b. Create a. cpp file in this file directory, and write the program code:

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define LOG_NDEBUG 0
#define LOG_TAG "hello_world"
#include <utils/Log.h>
int main (int argc ,int *argv )
{
        ALOGD("hello world");
        return 0;
}

c. Create. mk file in this directory, and write Android makefile program code:

LOCAL_PATH:= $(call my-dir)
include $(CLEAR_VARS)  
LOCAL_MODULE_TAGS := optional
LOCAL_SRC_FILES := HelloWorld.cpp  
LOCAL_STATIC_LIBRARIES := libcutils liblog 
LOCAL_MODULE := helloworld  
include $(BUILD_EXECUTABLE)

d. compile the written service in the source code:

cd Android_1008M/
source build/envsetup.sh
lunch 
mmm  /vendor/ /common/native_services

e. After the compilation is successful, package the service into the project and open the products.mk file
Locate the following code location:

###############################################################
###################   TARGET FOR COMMON   #####################
###############################################################
PRODUCT_PACKAGES += \
        AMapNetworkLocation \
        irremote \
        sougou_input \
        zigbeeSerianlportTest \
        Market \
        SixLoWPanUpgrade \
        SmartHome \
        BugReport \
        UCBrowser \
        helloworld  //Add your own service helloworld (lowercase) after it.

f. Add. RC file: add service in init.target.rc file:

# hello world 
service helloworld /system/bin/helloworld
    class late_start 
    user system
    grop system

g. Recompile the whole source file, add the written services to the source code, and burn the resulting system into the mobile phone:

source bulid/envsetup.sh
lunch
make –j32

h. view the services you write:

Open cmd, and enter the command adb logcat – s hello? World