iphone - 将字符串转换为日期的日期比较

如何随着时间将字符串更改为时间
我拧代码，但没有运气

NSString *comingdate = [sParams valueForKey:@"showdate"];
NSDateFormatter *dateformate = [[NSDateFormatter alloc]init];
[dateformate setDateFormat:@"yyyy-MM-dd"];
NSDate *todate = [dateformate dateFromString:comingdate];
NSLog(@"%@", todate);

/ * from showdate我得到的日期是yyyy-MM-dd，但是我想将该字符串转换为带时间的日期
谁能提供线索或清楚的代码

最佳答案

NSDate *firstDate=[[NSDate alloc]init];
    NSString *comingdate = [sParams valueForKey:@"showdate"]; // yyyy-MM-dd
    NSString *time = @"01:37:42"; // HH:mm:ss
    comingdate = [comingdate stringByAppendingFormat:@" %@", time];
    NSDateFormatter *dateformate = [[NSDateFormatter alloc] init];
    [dateformate setDateFormat:@"yyyy-MM-dd HH:mm:ss"];
    NSDate *secondDate = [dateformate dateFromString:comingdate];
    NSTimeInterval timeDifference = [secondDate timeIntervalSinceDate:firstDate];
    NSLog(@"%f",timeDifference);

关于iphone - 将字符串转换为日期的日期比较，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/7950359/