ubuntu的实现:
新建安卓项目,选择natice c++
在项目的AndroidManifest.xml文件中添加
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
c++示例代码如下:
#include <time.h>
#define WRITE_LOG(s, ...) do { \
FILE *f = fopen("/sdcard/log.txt", "a+"); \
fprintf(f, s, __VA_ARGS__); \
fflush(f); \
fclose(f); \
} while (0)
void static print_curr_time()
{
time_t tt = time(NULL);//这句返回的只是一个时间cuo
tm* t= localtime(&tt);
WRITE_LOG("%d-%02d-%02d %02d:%02d:%02d ",
t->tm_year + 1900,
t->tm_mon + 1,
t->tm_mday,
t->tm_hour,
t->tm_min,
t->tm_sec);
return ;
}
print_curr_time();
WRITE_LOG( "hip_knee_ankle_value %f \n",hip_knee_ankle_value);
windows的实现:
Easyloggin++项目在Github上的开源地址:https://github.com/easylogging/easyloggingpp
下载:easylogging++.cc和easylogging++.h文件
csdn下载连接:https://download.csdn.net/download/wzhrsh/19662171
配置文件my_log.conf如下:
* GLOBAL:
ENABLED = true
TO_FILE = true
TO_STANDARD_OUTPUT = true
FORMAT = "[%level | %datetime] | %msg"
FILENAME = "/sdcard/log_%datetime{%Y%M%d}.log"
MILLISECONDS_WIDTH = 3
PERFORMANCE_TRACKING = false
MAX_LOG_FILE_SIZE = 1048576
LOG_FLUSH_THRESHOLD = 0
* DEBUG:
FILENAME = "/sdcard/debug_log_%datetime{%Y%M%d}.log"
* FATAL:
ENABLED = false
* ERROR:
FILENAME = "/sdcard/error_log_%datetime{%Y%M%d}.log"
* VERBOSE:
ENABLED = false
示例代码如下:
#define _CRT_SECURE_NO_WARNINGS
#include "easylogging++.h"
INITIALIZE_EASYLOGGINGPP
int main(int argc, char** argv)
{
float sum = 0;
for (int i = 0; i < 200; i++) {
sum = sum + i;
}
el::Configurations conf("my_log.conf");
el::Loggers::reconfigureAllLoggers(conf);
//LOG(TRACE) << "***** trace log *****";
LOG(DEBUG) <<"test_angle:"<< sum;
//LOG(ERROR) << "***** error log *****";
//LOG(WARNING) << "***** warning log *****";
//LOG(INFO) << sum ;
system("pause");
return 0;
}