nslog重定义

1、nslog重定义

优点：可以自定义打印样式，真机测试，内容过长的时候不会被截断

缺点：打印速度比nslog慢

#define NSLog(FORMAT, ...) fprintf(stdout,"%s\n",[[NSString stringWithFormat:(@"@ > " FORMAT),[SLogManager currentDate] , ##__VA_ARGS__] UTF8String]);

2、重定义stringWithFormat：

+(void)LogWithFormat:(NSString *)format, ...

{

va_list ap;

va_start (ap, format);

NSString *body = [[NSString alloc] initWithFormat:format arguments:ap];

va_end (ap);

NSInteger length = body.length;

while (length > 1024) {

NSString *subString = [body substringToIndex:1024];

NSLog(@"\n%@", subString);

body = [body substringFromIndex:1024];

length = body.length;

}

NSLog(@"\n%@", body);

}