在某些情況下,我需要在1天內增加一個NSDate。對於它,我使用了dateByAddingTimeInterval,但它不起作用。datebyAddingTimeInterval不起作用
下面是代碼:
NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
[dateFormat setDateFormat:@"dd/MM/yyyy HH:mm"];
NSString *startDate = [NSString stringWithFormat:@"%@/2012 %@",dayString, begin];
NSString *endStringForDate = [NSString stringWithFormat:@"%@/2012 %@",dayString, end];
NSLog(@"Csantos: event starts: %@, event ends: %@", startDate, endStringForDate);
NSDate *beginDate = [dateFormat dateFromString:startDate];
NSDate *endDate = [dateFormat dateFromString:endStringForDate];
NSComparisonResult result = [beginDate compare:endDate];
if(result == NSOrderedDescending){
NSTimeInterval dayinseconds = 24 * 60 * 60;
[endDate dateByAddingTimeInterval:dayinseconds];
NSLog(@"Csantos: event ends: %@", endDate);
}
結果:
2012-01-24 12:09:47.837 app[3689:207] Csantos: event starts: 19/02/2012 23:00, event ends: 19/02/2012 03:00
2012-01-24 12:09:47.837 app[3689:207] Csantos: event ends: 19/02/2012 03:00
我已經嘗試過addTimeInterval(不建議使用,我知道),但它不是工作壓力太大。哪裏不對?
問候!
這將是date30 = [現在dateByAddingTimeInterval :-(86400 * 30)];不加30天。現在假設=今天 –
@atilla你是對的,原始問題中有一個以上的誤解,我只解決了其中的一個。 –