以选定的格式在iphone上获取当前时间

Question

下面应该给我一个9:30的NSDate对象:

NSString *dateString = @"09-30";
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"hh-mm"];
NSDate *dateFromString = [[NSDate alloc] init];
dateFromString = [dateFormatter dateFromString:dateString];

如何以相同的格式获得当前时间?

Answer 1

NSDate *currentTime = [NSDate date];
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"hh-mm"];
NSString *resultString = [dateFormatter stringFromDate: currentTime];

Answer 2

NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"hh-mm"];
NSDate *currentDate = [NSDate date];
NSString *currentDateString = [dateFormatter stringFromDate:currentDate];

Answer 3

NSDate alloc init将用当前时间创建一个日期。然后，你可以使用NSDateFormatter stringFromDate来格式化和显示那个日期。

:

NSDate *date = [[NSDate alloc] init];
NSLog(@"%@", date);
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"hh-mm"];
NSString *dateString = [dateFormatter stringFromDate:date];
NSLog(@"%@", dateString);

输出:

2011-12-05 07:20:02.994 Craplet[1706:707] 2011-12-05 12:20:02 +0000
2011-12-05 07:20:02.995 Craplet[1706:707] 07-20

Answer 4

NSDate *today = [[NSDate alloc] init];
NSLog(@"today is :%@", today);
NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
[dateFormatter setDateFormat:@"hh-mm:ss"];
NSString *timeString = [dateFormatter stringFromDate:today];
NSLog(@"%@", timeString);

Answer 5

NSDate *currentDate =[NSDate date];
//Your formatter goes here.
NSString *currentTime = [dateFormatter stringFromDate:currentDate];