下面是怎么使用SimpleLogger类库。

[1] 把SimpleLogger.h和SimpleLogger.m加到你的项目中 
[2] 调用[[SimpleLogger getLogger]setLogLevelSetting:SOME_LEGEL];（可选的，默认是SLLE_MAJOR) 
[3] 最后调用[[SimpleLogger getLogger]release] 
[4] 常用方法：

ENTER(@"method name");  
  
INFO(@"The count of array is %d", [array count]);  
  
DEBUG(@"The person’s name is %@", person.name);  
  
ERROR(@"Impossible get into this branch");  
  
RETURN(rst, @"%d", rst); //rst就是返回值  
  
LOG(SLL_DETAILED, @"This log is very detailed with value %d", value);  
  
[[SimpleLogger getLogger]setLogLevelSetting:SLLS_MINOR]; //设置日志级别

//====================================================================================
#import <Foundation/Foundation.h>  
#import "SimpleLogger.h"  
  
int testLogger()  
{  
    ENTER(@"testLogger()");  
    int rst = 10;  
    RETURN(-rst, @"%d", -rst);  
}  
  
int main (int argc, const char * argv[]) {  
    NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init];  
    [SimpleLogger getLogger];  
      
    //insert code here  
    int i = 10;  
    INFO(@"i is %d", i);  
    i = -100;  
    INFO(@"i is %d", i);         
    testLogger();  
    [pool drain];  
    [[SimpleLogger getLogger]release];  
    return 0;   
}