//获取当前的时间

+(NSString*)getCurrentTimes{

    NSDate *datenow = [NSDate date];

    //----------将nsdate按formatter格式转成nsstring

    NSString *currentTimeString = [formatter stringFromDate:datenow];

    NSLog(@"currentTimeString =  %@",currentTimeString);

    return currentTimeString;

}

获取当前时间戳有两种方法(以秒为单位)

+(NSString *)getNowTimeTimestamp{

    NSDate *datenow = [NSDate date];//现在时间,你可以输出来看下是什么格式

    NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)[datenow timeIntervalSince1970]];

    return timeSp;

}

+(NSString *)getNowTimeTimestamp2{

    NSDate* dat = [NSDate dateWithTimeIntervalSinceNow:0];

    NSTimeInterval a=[dat timeIntervalSince1970];

    NSString*timeString = [NSString stringWithFormat:@"%0.f", a];//转为字符型

    ;

return timeString;

}

//获取当前时间戳 （以毫秒为单位）

+(NSString *)getNowTimeTimestamp3{

    NSDate *datenow = [NSDate date];//现在时间,你可以输出来看下是什么格式

    NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)([datenow timeIntervalSince1970]*1000)];

    return timeSp;
}